H3C S5500-EI Series Operation Manual

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Table of Contents

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Operation Manual - Multicast

H3C S5500-EI Series Ethernet Switches

Chapter 1 Multicast Overview ...................................................................................................... 1-1

1.1 Introduction to Multicast..................................................................................................... 1-1

1.1.1 Comparison of Information Transmission Techniques............................................ 1-1

1.1.2 Roles in Multicast .................................................................................................... 1-4

1.1.3 Advantages and Applications of Multicast .............................................................. 1-5

1.2 Multicast Models ................................................................................................................ 1-6

1.3 Multicast Architecture ........................................................................................................ 1-6

1.3.1 Multicast Addresses ................................................................................................ 1-7

1.3.2 Multicast Protocols ................................................................................................ 1-11

1.4 Multicast Packet Forwarding Mechanism ........................................................................ 1-13

Chapter 2 IGMP Snooping Configuration ................................................................................... 2-1

2.1 IGMP Snooping Overview ................................................................................................. 2-1

2.1.1 Principle of IGMP Snooping .................................................................................... 2-1

2.1.2 Basic Concepts in IGMP Snooping ......................................................................... 2-2

2.1.3 Work Mechanism of IGMP Snooping ...................................................................... 2-4

2.1.4 Processing of Multicast Protocol Messages ........................................................... 2-6

2.1.5 Protocols and Standards......................................................................................... 2-6

2.2 IGMP Snooping Configuration Task List ........................................................................... 2-7

2.3 Configuring Basic Functions of IGMP Snooping ............................................................... 2-8

2.3.1 Configuration Prerequisites..................................................................................... 2-8

2.3.2 Enabling IGMP Snooping........................................................................................ 2-8

2.3.3 Configuring the Version of IGMP Snooping ............................................................ 2-9

2.4 Configuring IGMP Snooping Port Functions...................................................................... 2-9

2.4.1 Configuration Prerequisites..................................................................................... 2-9

2.4.2 Configuring Aging Timers for Dynamic Ports........................................................ 2-10

2.4.3 Configuring Static Ports ........................................................................................ 2-11

2.4.4 Configuring Simulated Joining .............................................................................. 2-12

2.4.5 Configuring Fast Leave Processing ...................................................................... 2-13

2.5 Configuring IGMP Snooping Querier ............................................................................... 2-14

2.5.1 Configuration Prerequisites................................................................................... 2-14

2.5.2 Enabling IGMP Snooping Querier......................................................................... 2-14

2.5.3 Configuring IGMP Queries and Responses.......................................................... 2-15

2.5.4 Configuring Source IP Address of IGMP Queries................................................. 2-16

2.6 Configuring an IGMP Snooping Policy ............................................................................ 2-17

2.6.1 Configuration Prerequisites................................................................................... 2-17

2.6.2 Configuring a Multicast Group Filter...................................................................... 2-17

2.6.3 Configuring Multicast Source Port Filtering........................................................... 2-18

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Summary of Contents for H3C S5500-EI Series

Page 1: Table Of Contents
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Table of Contents Table of Contents Chapter 1 Multicast Overview ...................... 1-1 1.1 Introduction to Multicast..................... 1-1 1.1.1 Comparison of Information Transmission Techniques..........1-1 1.1.2 Roles in Multicast ....................1-4 1.1.3 Advantages and Applications of Multicast .............. 1-5 1.2 Multicast Models ........................
Page 2 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Table of Contents 2.6.4 Configuring the Function of Dropping Unknown Multicast Data ......2-19 2.6.5 Configuring IGMP Report Suppression..............2-20 2.6.6 Configuring Maximum Multicast Groups that Can Be Joined on a Port....2-20 2.6.7 Configuring Multicast Group Replacement ............
Page 3 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Table of Contents 3.7 Displaying and Maintaining MLD Snooping..............3-21 3.8 MLD Snooping Configuration Examples................3-22 3.8.1 Simulated Joining....................3-22 3.8.2 Static Router Port Configuration ................3-24 3.8.3 MLD Snooping Querier Configuration ..............3-27 3.9 Troubleshooting MLD Snooping ..................
Page 4 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Table of Contents 6.7.2 Inconsistent Memberships on Routers on the Same Subnet........ 6-18 Chapter 7 PIM Configuration......................7-1 7.1 PIM Overview........................7-1 7.1.1 Introduction to PIM-DM ................... 7-2 7.1.2 How PIM-DM Works....................7-2 7.1.3 Introduction to PIM-SM ...................
Page 5 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Table of Contents 7.8 Troubleshooting PIM Configuration ................. 7-51 7.8.1 Failure of Building a Multicast Distribution Tree Correctly ........7-51 7.8.2 Multicast Data Abnormally Terminated on an Intermediate Router ...... 7-53 7.8.3 RPs Unable to Join SPT in PIM-SM..............
Page 6 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Table of Contents 9.2 Configuration Task List ...................... 9-6 9.3 Configuring Multicast Routing and Forwarding..............9-6 9.3.1 Configuration Prerequisites..................9-6 9.3.2 Enabling IP Multicast Routing ................. 9-7 9.3.3 Configuring Multicast Static Routes ................ 9-7 9.3.4 Configuring a Multicast Route Match Rule..............
Page 7: Chapter 1 Multicast Overview
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview Chapter 1 Multicast Overview Note: This manual chiefly focuses on the IP multicast technology and device operations. Unless otherwise stated, the term “multicast” in this document refers to IP multicast.
Page 8 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview Figure 1-1 Unicast transmission Assume that Hosts B, D and E need this information. The information source establishes a separate transmission channel for each of these hosts.
Page 9 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview Figure 1-2 Broadcast transmission Assume that only Hosts B, D, and E need the information. If the information source broadcasts the information, Hosts A and C also receive it. In addition to information security issues, this also causes traffic flooding on the same network.
Page 10: Roles In Multicast
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview Figure 1-3 Multicast transmission Assume that Hosts B, D and E need the information. To receive the information correctly, these hosts need to join a receiver set, which is known as a multicast group.
Page 11: Advantages And Applications Of Multicast
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview For a better understanding of the multicast concept, you can assimilate multicast transmission to the transmission of TV programs, as shown in Table 1-1. Table 1-1 An analogy between TV transmission and multicast transmission...
Page 12: Multicast Models
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview Any other point-to-multiple-point data distribution application. 1.2 Multicast Models Based on how the receivers treat the multicast sources, there are two multicast models: I. ASM model In the ASM model, any sender can send information to a multicast group as a multicast source, and numbers of receivers can join a multicast group identified by a group address and obtain multicast information addressed to that multicast group.
Page 13: Multicast Addresses
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview hosts, and the TCP/IP stack must support reception and transmission of multicast data. 1.3.1 Multicast Addresses To allow communication between multicast sources and multicast group members, network-layer multicast addresses, namely, multicast IP addresses must be provided.
Page 14 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview Note: The membership of a group is dynamic. Hosts can join or leave multicast groups at any time. “Glop” is a mechanism for assigning multicast addresses between different autonomous systems (ASs).
Page 15 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview Figure 1-4 IPv6 multicast format 0xFF: 8 bits, indicating that this address is an IPv6 multicast address. Flags: 4 bits, of which the high-order flag is reserved and set to 0; the definition and usage of the second bit can be found in RFC 3956;...
Page 16 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview IPv4 multicast MAC addresses As defined by IANA, the high-order 24 bits of an IPv4 multicast MAC address are 0x01005e, bit 25 is 0x0, and the low-order 23 bits are the low-order 23 bits of a multicast IPv4 address.
Page 17: Multicast Protocols
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview 1.3.2 Multicast Protocols Note: Generally, we refer to IP multicast working at the network layer as Layer 3 multicast and the corresponding multicast protocols as Layer 3 multicast protocols, which include IGMP/MLD, PIM/IPv6 PIM, and MSDP;...
Page 18 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview connected with the hosts. These protocols define the mechanism of establishing and maintaining group memberships between hosts and Layer 3 multicast devices. Multicast routing protocols A multicast routing protocol runs on Layer 3 multicast devices to establish and maintain multicast routes and forward multicast packets correctly and efficiently.
Page 19: Multicast Packet Forwarding Mechanism
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 1 Multicast Overview IGMP Snooping/MLD Snooping Running on Layer 2 devices, Internet Group Management Protocol Snooping (IGMP Snooping) and Multicast Listener Discovery Snooping (MLD Snooping) are multicast constraining mechanisms that manage and control multicast groups by listening to and...
Page 20: Chapter 2 Igmp Snooping Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Chapter 2 IGMP Snooping Configuration When configuring IGMP Snooping, go to the following sections for information you are interested in: IGMP Snooping Overview IGMP Snooping Configuration Task List...
Page 21: Basic Concepts In Igmp Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Multicast packet transmission Multicast packet transmission without IGMP Snooping when IGMP Snooping runs Multicast router Multicast router Source Source Layer 2 switch Layer 2 switch Host A...
Page 22 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Router port: A router port is a port on the Ethernet switch that leads switch towards the Layer 3 multicast device (DR or IGMP querier). In the figure, Ethernet 1/0/1 of Switch A and Ethernet 1/0/1 of Switch B are router ports.
Page 23: Work Mechanism Of Igmp Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Note: The port aging mechanism of IGMP Snooping works only for dynamic ports; a static port will never age out. 2.1.3 Work Mechanism of IGMP Snooping...
Page 24 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration If a forwarding table entry exists for the reported group and the port is included in the outgoing port list, which means that this port is already a member port, the switch resets the member port aging timer for that port.
Page 25: Processing Of Multicast Protocol Messages
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration forwards it through all its router ports in the VLAN and all member ports for that multicast group, and performs the following: If any IGMP report in response to the group-specific query is heard on a member port before its aging timer expires, this means that some host attached to the port is receiving or expecting to receive multicast data for that multicast group.
Page 26: Igmp Snooping Configuration Task List
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration 2.2 IGMP Snooping Configuration Task List Complete these tasks to configure IGMP Snooping: Task Remarks Enabling IGMP Snooping Required Configuring Basic Functions of IGMP Configuring the Version of IGMP...
Page 27: Configuring Basic Functions Of Igmp Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Note: Configurations made in IGMP Snooping view are effective for all VLANs, while configurations made in VLAN view are effective only for ports belonging to the current VLAN.
Page 28: Configuring The Version Of Igmp Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Note: IGMP Snooping must be enabled globally before it can be enabled in a VLAN. After enabling IGMP Snooping in a VLAN, you cannot enable IGMP and/or PIM on the corresponding VLAN interface, and vice versa.
Page 29: Configuring Aging Timers For Dynamic Ports
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Enable IGMP Snooping in the VLAN or enable IGMP on the desired VLAN interface Configure the corresponding port groups. Before configuring IGMP Snooping port functions, prepare the following data:...
Page 30: Configuring Static Ports
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration To do... Use the command... Remarks Optional Configure member port igmp-snooping aging time host-aging-time interval 260 seconds by default 2.4.3 Configuring Static Ports If all the hosts attached to a port are interested in the multicast data addressed to a...
Page 31: Configuring Simulated Joining
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration 2.4.4 Configuring Simulated Joining Generally, a host running IGMP responds to IGMP queries from the IGMP querier. If a host fails to respond due to some reasons, the multicast router may deem that no member of this multicast group exists on the network segment, and therefore will remove the corresponding forwarding path.
Page 32: Configuring Fast Leave Processing
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration 2.4.5 Configuring Fast Leave Processing The fast leave processing feature allows the switch to process IGMP leave group messages in a fast way. With the fast leave processing feature enabled, when receiving an IGMP leave group message on a port, the switch immediately removes that port from the outgoing port list of the forwarding table entry for the indicated group.
Page 33: Configuring Igmp Snooping Querier
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Caution: If fast leave processing is enabled on a port to which more than one host is attached, when one host leaves a multicast group, the other hosts attached to the port and interested in the same multicast group will fail to receive multicast data for that group.
Page 34: Configuring Igmp Queries And Responses
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Caution: It is meaningless to configure an IGMP Snooping querier in a multicast network running IGMP. Although an IGMP Snooping querier does not take part in IGMP querier elections, it may affect IGMP querier elections because it sends IGMP general queries with a low source IP address.
Page 35: Configuring Source Ip Address Of Igmp Queries
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration II. Configuring IGMP queries and responses in a VLAN Follow these steps to configure IGMP queries and responses in a VLAN: To do... Use the command...
Page 36: Configuring An Igmp Snooping Policy
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration To do... Use the command... Remarks igmp-snooping Configure the source IP Optional special-query source-ip address of IGMP { current-interface | 0.0.0.0 by default group-specific queries ip-address }...
Page 37: Configuring Multicast Source Port Filtering
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration I. Configuring a multicast group filter globally Follow these steps to configure a multicast group filter globally: To do... Use the command... Remarks Enter system view system-view —...
Page 38: Configuring The Function Of Dropping Unknown Multicast Data
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration To do... Use the command... Remarks Enter system view system-view — Enter IGMP Snooping igmp-snooping — view Required Enable multicast source source-deny port port filtering interface-list Disabled by default II.
Page 39: Configuring Igmp Report Suppression
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration To do... Use the command... Remarks Enter system view system-view — Enter VLAN view vlan vlan-id — Enable the function of Required igmp-snooping dropping unknown drop-unknown...
Page 40: Configuring Multicast Group Replacement
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Follow these steps to configure the maximum number of multicast groups that can be joined on a port or ports: To do... Use the command... Remarks Enter system view —...
Page 41 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration I. Configuring multicast group replacement globally Follow these steps to configure multicast group replacement globally: To do... Use the command... Remarks Enter system view system-view —...
Page 42: Displaying And Maintaining Igmp Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration 2.7 Displaying and Maintaining IGMP Snooping To do... Use the command... Remarks View the information of IGMP display igmp-snooping group Available in Snooping multicast groups [ vlan vlan-id ] [ verbose ]...
Page 43 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration II. Network diagram Receiver Host A Source Receiver Vlan100 GE1/0/4 GE1/0/2 GE1/0/1 GE1/0/1 GE1/0/3 1.1.1.2/24 10.1.1.1/24 Router A Switch A Host B GE1/0/2 1.1.1.1/24 IGMP querier...
Page 44 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration [SwitchA] vlan 100 [SwitchA-vlan100] port GigabitEthernet 1/0/1 to GigabitEthernet 1/0/4 [SwitchA-vlan100] igmp-snooping enable [SwitchA-vlan100] quit # Enable simulated host joining on GigabitEthernet 1/0/3 and GigabitEthernet 1/0/4 respectively.
Page 45: Static Router Port Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration As shown above, GigabitEthernet 1/0/3 and GigabitEthernet 1/0/4 of Switch A have joined multicast group 224.1.1.1. 2.8.2 Static Router Port Configuration I. Network requirements As shown in...
Page 46 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration II. Network diagram Source Switch A GE1/0/2 GE1/0/1 1.1.1.2/24 10.1.1.1/24 GE1/0/1 Router A 1.1.1.1/24 IGMP querier Switch C GE1/0/5 GE1/0/2 GE1/0/2 Host C Switch B Receiver...
Page 47 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration # Create VLAN 100, assign GigabitEthernet 1/0/1 through GigabitEthernet 1/0/3 to this VLAN, and enable IGMP Snooping in the VLAN. [SwitchA] vlan 100 [SwitchA-vlan100] port GigabitEthernet 1/0/1 to GigabitEthernet 1/0/3...
Page 48: Igmp Snooping Querier Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Total 1 MAC Group(s). Port flags: D-Dynamic port, S-Static port, A-Aggregation port, C-Copy port Subvlan flags: R-Real VLAN, C-Copy VLAN Vlan(id):100. Total 1 IP Group(s). Total 1 IP Source(s).
Page 49 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration II. Network diagram Querier GE1/0/1 GE1/0/2 Switch A Switch B Switch C GE1/0/1 GE1/0/1 GE1/0/2 GE1/0/3 GE1/0/2 GE1/0/3 Source Receiver Receiver Receiver Host A Host B Host C 1.1.1.1/24...
Page 50: Troubleshooting Igmp Snooping Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration # Create VLAN 100, add GigabitEthernet 1/0/1 through GigabitEthernet 1/0/3 to VLAN 100, and enable IGMP Snooping in this VLAN. [SwitchB] vlan 100 [SwitchB-vlan100] port GigabitEthernet 1/0/1 to GigabitEthernet 1/0/3...
Page 51: Configured Multicast Group Policy Fails To Take Effect
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration II. Analysis IGMP Snooping is not enabled. III. Solution Enter the display current-configuration command to view the running status of IGMP Snooping. If IGMP Snooping is not enabled, use the igmp-snooping command to enable IGMP Snooping globally, and then use igmp-snooping enable command to enable IGMP Snooping in VLAN view.
Page 52 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 2 IGMP Snooping Configuration Use the display igmp-snooping group command to check whether any port has been configured as a static member port of any multicast group. If so, check whether this configuration conflicts with the configured multicast group policy.
Page 53: Chapter 3 Mld Snooping Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Chapter 3 MLD Snooping Configuration When configuring MLD Snooping, go to these sections for information you are interested in: MLD Snooping Overview MLD Snooping Configuration Task List...
Page 54: Basic Concepts In Mld Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration IPv6 multicast packet transmission IPv6 multicast packet transmission without MLD Snooping when MLD Snooping runs Multicast router Multicast router Source Source Layer 2 switch Layer 2 switch...
Page 55 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Router port: A router port is a port on the Ethernet switch that leads switch towards the Layer-3 multicast device (DR or MLD querier). In the figure, Ethernet 1/0/1 of Switch A and Ethernet 1/0/1 of Switch B are router ports.
Page 56: How Mld Snooping Works
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Note: The port aging mechanism of MLD Snooping works only for dynamic ports; a static port will never age out. 3.1.3 How MLD Snooping Works A switch running MLD Snooping performs different actions when it receives different MLD messages, as follows: I.
Page 57 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration If a forwarding table entry exists for the reported IPv6 multicast group and the port is included in the outgoing port list, which means that this port is already a member port, the switch resets the member port aging timer for that port.
Page 58: Protocols And Standards
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration If no MLD report in response to the MLD multicast-address-specific query is heard on a member port before its aging timer expires, this means that no hosts attached to the port are still listening to that IPv6 multicast group address.
Page 59: Configuring Basic Functions Of Mld Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Note: Configurations made in MLD Snooping view are effective for all VLANs, while configurations made in VLAN view are effective only for ports belonging to the current VLAN.
Page 60: Configuring The Version Of Mld Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Note: MLD Snooping must be enabled globally before it can be enabled in a VLAN. After enabling MLD Snooping in a VLAN, you cannot enable MLD and/or IPv6 PIM on the corresponding VLAN interface, and vice versa.
Page 61: Configuring Aging Timers For Dynamic Ports
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Configure the corresponding port groups Before configuring MLD Snooping port functions, prepare the following data: Aging time of router ports Aging timer of member ports IPv6 multicast group and IPv6 multicast source addresses 3.4.2 Configuring Aging Timers for Dynamic Ports...
Page 62: Configuring Static Ports
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration 3.4.3 Configuring Static Ports If all the hosts attached to a port is interested in the IPv6 multicast data addressed to a particular IPv6 multicast group, you can configure that port as a static member port for that IPv6 multicast group.
Page 63: Configuring Fast Leave Processing
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration To avoid this situation from happening, you can enable simulated joining on a port of the switch, namely configure the port as a simulated member host for an IPv6 multicast group.
Page 64: Configuring Mld Snooping Querier
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration In VLANs where only one host is attached to each port, fast leave processing helps improve bandwidth and resource usage. I. Configuring fast leave processing globally Follow these steps to configure fast leave processing globally: To do...
Page 65: Enabling Mld Snooping Querier
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Enable MLD Snooping in the VLAN. Before configuring MLD Snooping querier, prepare the following data: MLD general query interval, MLD last-member query interval, Maximum response time for MLD general queries, Source IPv6 address of MLD general queries, and Source IPv6 address of MLD multicast-address-specific queries.
Page 66 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Upon receiving an MLD query (general query or group-specific query), a host starts a timer for each IPv6 multicast group it has joined. This timer is initialized to a random...
Page 67: Configuring Source Ipv6 Addresses Of Mld Queries
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration To do... Use the command... Remarks Configure the MLD mld-snooping Optional last-member query last-listener-query-inter 1 second by default interval val interval Caution: Make sure that the MLD query interval is greater than the maximum response time for MLD general queries;...
Page 68: Configuring An Ipv6 Multicast Group Filter
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Enable MLD Snooping in the VLAN Before configuring an MLD Snooping policy, prepare the following data: IPv6 ACL rule for IPv6 multicast group filtering The maximum number of IPv6 multicast groups that can pass the ports 3.6.2 Configuring an IPv6 Multicast Group Filter...
Page 69: Configuring Ipv6 Multicast Source Port Filtering
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration To do... Use the command... Remarks Required No IPv6 filter configured by Configure an IPv6 multicast mld-snooping group-policy default, namely group filter acl6-number [ vlan vlan-list ]...
Page 70: Configuring Dropping Unknown Ipv6 Multicast Data
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration To do... Use the command... Remarks Required Enable IPv6 multicast source mld-snooping source-deny Disabled by port filtering default Note: When enabled to filter IPv6 multicast data based on the source ports, the device is automatically enabled to filter IPv4 multicast data based on the source ports.
Page 71: Configuring Maximum Multicast Groups That That Can Be Joined On A Port
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Layer 2 device, the Layer 3 device directly connected with it will receive duplicate MLD reports from these members. With the MLD report suppression function enabled, within a query interval, the Layer 2...
Page 72: Configuring Ipv6 Multicast Group Replacement
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Note: When the number of IPv6 multicast groups that can be joined on a port reaches the maximum number configured, the system deletes all the forwarding entries persistent to that port from the MLD Snooping forwarding table, and the hosts on this port need to join IPv6 multicast groups again.
Page 73: Displaying And Maintaining Mld Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration II. Configuring IPv6 multicast group replacement on a port or a group of ports Follow these steps to configure IPv6 multicast group replacement on a port or a group of ports: To do...
Page 74: Mld Snooping Configuration Examples
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Note: The reset mld-snooping group command cannot clear MLD Snooping multicast group information for static joins. 3.8 MLD Snooping Configuration Examples 3.8.1 Simulated Joining I. Network requirements...
Page 75 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Configure Router A # Enable IPv6 multicast routing, enable IPv6 PIM-DM on each interface, and enable MLDv1 on GigabitEthernet 1/0/1. <RouterA> system-view [RouterA] multicast ipv6 routing-enable...
Page 76: Static Router Port Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Vlan(id):100. Total 1 IP Group(s). Total 1 IP Source(s). Total 1 MAC Group(s). Router port(s):total 1 port. GE1/0/1 (D) ( 00:01:30 ) IP group(s):the following ip group(s) match to one mac group.
Page 77 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Note: If no static router port is configured, when the path of Switch A—Switch B—Switch C gets blocked, at least one MLD query-response cycle must be completed before the IPv6 multicast data can flow to the receivers along the new path of Switch A—Switch C,...
Page 78 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration [RouterA-GigabitEthernet 1/0/2] pim ipv6 dm [RouterA-GigabitEthernet 1/0/2] quit Configure Switch A # Enable MLD Snooping globally. <SwitchA> system-view [SwitchA] mld-snooping [SwitchA-mld-snooping] quit # Create VLAN 100, assign GigabitEthernet 1/0/1 through GigabitEthernet 1/0/3 to this VLAN, and enable MLD Snooping in the VLAN.
Page 79: Mld Snooping Querier Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Verify the configuration # View the detailed information about MLD Snooping multicast groups in VLAN 100 on Switch A. [SwitchA] display mld-snooping group vlan 100 verbose Total 1 IP Group(s).
Page 80 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration II. Network diagram Figure 3-5 Network diagram for MLD Snooping querier configuration III. Configuration procedure Configure switch A # Enable IPv6 forwarding and enable MLD Snooping globally.
Page 81: Troubleshooting Mld Snooping
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration [SwitchB] vlan 100 [SwitchB-vlan100] port GigabitEthernet 1/0/1 to GigabitEthernet 1/0/3 [SwitchB-vlan100] mld-snooping enable Configuration on Switch C # Enable IPv6 forwarding and enable MLD Snooping globally.
Page 82: Configured Ipv6 Multicast Group Policy Fails To Take Effect
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration III. Solution Enter the display current-configuration command to view the running status of MLD Snooping. If MLD Snooping is not enabled, use the mld-snooping command to enable MLD Snooping globally, and then use mld-snooping enable command to enable MLD Snooping in VLAN view.
Page 83 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 3 MLD Snooping Configuration Use the display mld-snooping group command to check whether any port has been configured as a static member port of any IPv6 multicast group. If so, check whether this configuration conflicts with the configured IPv6 multicast group policy.
Page 84: Chapter 4 Multicast Vlan Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 4 Multicast VLAN Configuration Chapter 4 Multicast VLAN Configuration 4.1 Introduction to Multicast VLAN As shown in Figure 4-1, in the traditional multicast programs-on-demand mode, when hosts that belong to different VLANs, Host A, Host B and Host C require multicast programs on demand service, Router A needs to forward a separate copy of the multicast data in each VLAN.
Page 85: Displaying And Maintaining Multicast Vlan
The VLAN to be configured as the multicast VLAN and the VLANs to be configured as sub-VLANs of the multicast VLAN must exist. The number of sub-VLANs of the multicast VLAN must not exceed the system-defined limit (an S5500-EI series Ethernet switch supports a maximum of one multicast VLAN and 127 sub-VLANs). Caution: You cannot configure any multicast VLAN or a sub-VLAN of a multicast VLAN on a device with IP multicast routing or routing enabled.
Page 86 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 4 Multicast VLAN Configuration IGMP is required on Router A, and IGMP Snooping is required on Switch A. Router A is the IGMP querier. Switch A’s GigabitEthernet 1/0/1 belongs to VLAN 1024, GigabitEthernet 1/0/2...
Page 87 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 4 Multicast VLAN Configuration [RouterA-GigabitEthernet 1/0/1] igmp enable [RouterA-GigabitEthernet 1/0/1] quit [RouterA] interface GigabitEthernet 1/0/2 [RouterA-GigabitEthernet 1/0/2] pim dm [RouterA-GigabitEthernet 1/0/2] quit Configure Switch A # Enable IGMP Snooping globally.
Page 88: Chapter 5 Ipv6 Multicast Vlan Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 5 IPv6 Multicast VLAN Configuration Chapter 5 IPv6 Multicast VLAN Configuration 5.1 Introduction to IPv6 Multicast VLAN As shown in Figure 5-1, in the traditional IPv6 multicast programs-on-demand mode, when hosts that belong to different VLANs, Host A, Host B and Host C require IPv6 multicast programs on demand service, Router A needs to forward a separate copy of the IPv6 multicast data in each VLAN.
Page 89: Displaying And Maintaining Ipv6 Multicast Vlan
IPv6 multicast VLAN must exist. The total number of sub-VLANs of an IPv6 multicast VLAN must not exceed the system-defined limit (an S5500-EI series Ethernet switch supports a maximum of one IPv6 multicast VLAN and 127 sub-VLANs).
Page 90: Ipv6 Multicast Vlan Configuration Examples
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 5 IPv6 Multicast VLAN Configuration 5.4 IPv6 Multicast VLAN Configuration Examples I. Network requirements As shown in Figure 5-2, Router A connects to an IPv6 multicast source (Source) through GigabitEthernet 1/0/2, and to Switch A through GigabitEthernet 1/0/1.
Page 91 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 5 IPv6 Multicast VLAN Configuration # Enable IPv6 multicast routing, enable IPv6 PIM-DM on each interface, and enable MLD on GigabitEthernet 1/0/1. <RouterA> system-view [RouterA] multicast ipv6 routing-enable [RouterA] interface GigabitEthernet 1/0/1...
Page 92: Chapter 6 Igmp Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration Chapter 6 IGMP Configuration When configuring IGMP, go to the following sections for the information you are interested in: IGMP Overview IGMP Configuration Task List IGMP Configuration Example...
Page 93 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration querier election mechanism is required to determine which router will act as the IGMP querier on the subnet. In IGMPv1, the designated router (DR) elected by a multicast routing protocol (such as PIM) serves as the IGMP querier.
Page 94: Enhancements Provided By Igmpv2
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration G1. This mechanism, known as IGMP report suppression, helps reduce traffic over the local subnet. At the same time, because Host A is interested in G2, it sends a report to the multicast group address of G2.
Page 95: Enhancements In Igmpv3
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration II. “Leave group” mechanism In IGMPv1, when a host leaves a multicast group, it does not send any notification to the multicast router. The multicast router relies on host response timeout to know whether a group no longer has members.
Page 96 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration is interested only in the multicast data that Source 1 sends to G but not in the data from Source 2. Source 1 Host A Receiver Host B...
Page 97: Protocols And Standards
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration list. If the specified multicast source list is empty, this means that the report sender has left the reported multicast group. IS_EX: The source filtering mode is Exclude, namely, the report sender requests the multicast data from any sources but those defined in the specified multicast source list.
Page 98: Configuring Basic Functions Of Igmp
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration Note: Configurations performed in IGMP view are effective on all interfaces, while configurations performed in interface view are effective on the current interface only. If a feature is not configured for an interface in interface view, the global configuration performed in IGMP view will apply to that interface.
Page 99: Configuring Igmp Versions
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration 6.3.3 Configuring IGMP Versions Because messages vary with different IGMP versions, the same IGMP version should be configured for all routers on the same subnet before IGMP can work properly.
Page 100: Configuring A Multicast Group Filter
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration To do... Use the command... Description Required Configure the interface igmp static-group An interface is not a static as a static member of a group-address [ source...
Page 101: Configuring Igmp Message Options
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration Before adjusting IGMP performance, prepare the following data: IGMP general query interval IGMP querier’s robustness variable Maximum response time for IGMP general queries IGMP last-member query interval Other querier present interval 6.4.2 Configuring IGMP Message Options...
Page 102: Configuring Igmp Query And Response Parameters
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration II. Configuring IGMP packet options on an interface Follow these steps to configure IGMP packet options on an interface: To do... Use the command... Description Enter system view system-view —...
Page 103 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration For IGMP group-specific queries, you can configure the IGMP last member query interval to fill their Max Response time field. Namely, for IGMP group-specific queries, the maximum response time equals the IGMP last member query interval.
Page 104: Configuring Igmp Fast Leave Processing
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration To do... Use the command... Description Configure the maximum igmp Optional response time for IGMP max-response-time 10 seconds by default general queries interval igmp Optional Configure the IGMP last...
Page 105: Displaying And Maintaining Igmp
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration 6.5 Displaying and Maintaining IGMP To do... Use the command... Description display igmp group View IGMP multicast group [ group-address | interface Available in information interface-type interface-number ]...
Page 106: Igmp Configuration Example
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration 6.6 IGMP Configuration Example I. Network requirements Receivers receive VOD information through the multicast mode. Receivers of different organizations form stub networks N1 and N2, and Host A and Host C are receivers in N1 and N2 respectively.
Page 107 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration Configure the OSPF protocol for interoperation among the switches. Ensure the network-layer interoperation among Switch A, Switch B and Switch C on the PIM network and dynamic update of routing information among the switches through a unicast routing protocol.
Page 108: Troubleshooting Igmp
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration Querier for IGMP: 10.110.2.1 (this router) Total 1 IGMP Group reported 6.7 Troubleshooting IGMP 6.7.1 No Member Information on the Receiver-Side Router I. Symptom When a host sends a report for joining multicast group G, there is no member information of the multicast group G on the router closest to that host.
Page 109: Inconsistent Memberships On Routers On The Same Subnet
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 6 IGMP Configuration 6.7.2 Inconsistent Memberships on Routers on the Same Subnet I. Symptom Different memberships are maintained on different IGMP routers on the same subnet. II. Analysis A router running IGMP maintains multiple parameters for each interface, and these parameters influence one another, forming very complicated relationships.
Page 110: Chapter 7 Pim Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Chapter 7 PIM Configuration When configuring PIM, go to these sections for information you are interested in: PIM Overview Configuring PIM-DM Configuring PIM-SM Configuring PIM-SSM Configuring PIM Common Information...
Page 111: Introduction To Pim-Dm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Note: To facilitate description, a network comprising PIM-capable routers is referred to as a “PIM domain” in this document. 7.1.1 Introduction to PIM-DM PIM-DM is a type of dense mode multicast protocol. It uses the “push mode” for multicast forwarding, and is suitable for small-sized networks with densely distributed multicast members.
Page 112 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Note: Every activated interface on a router sends hello messages periodically, and thus learns the PIM neighboring information pertinent to the interface. II. SPT establishment The process of building an SPT is the process of “flood and prune”.
Page 113 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Figure 7-1 SPT establishment The “flood and prune” process takes place periodically. A pruned state timeout mechanism is provided. A pruned branch restarts multicast forwarding when the pruned state times out and then is pruned again when it no longer has any multicast receiver.
Page 114: Introduction To Pim-Sm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration IV. Assert If multiple multicast routers exist on a multi-access subnet, duplicate packets may flow to the same subnet. To shut off duplicate flows, the assert mechanism is used for election of a single multicast forwarder on a multi-access network.
Page 115: How Pim-Sm Works
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration PIM-SM is a type of sparse mode multicast protocol. It uses the “pull mode” for multicast forwarding, and is suitable for large- and medium-sized networks with sparsely and widely distributed multicast group members.
Page 116 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration I. Neighbor discovery PIM-SM uses exactly the same neighbor discovery mechanism as PIM-DM does. Refer Neighbor discovery. II. DR election PIM-SM also uses hello messages to elect a designated router (DR) for a multi-access network.
Page 117 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Routers on the multi-access network send hello messages to one another. The hello messages contain the router priority for DR election. The router with the highest DR priority will become the DR.
Page 118 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Figure 7-4 BSR and C-RPs IV. RPT establishment Figure 7-5 RPT establishment in a PIM-SM domain As shown in Figure 7-5, the process of building an RPT is as follows: When a receiver joins a multicast group G, it uses an IGMP message to inform the directly connected DR.
Page 119 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration The multicast data addressed to the multicast group G flows through the RP, reaches the corresponding DR along the established RPT, and finally is delivered to the receiver.
Page 120: Introduction To Bsr Admin-Scope Regions In Pim-Sm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration The subsequent multicast data from the multicast source travels along the established SPT to the RP, and then the RP forwards the data along the RPT to the receivers.
Page 121 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration II. Relationship between BSR admin-scope regions and the global scope zone A better understanding of the global scope zone and BSR admin-scope regions should be based on two aspects: geographical space and group address range.
Page 122: Ssm Model Implementation In Pim
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Figure 7-8 Relationship between BSR admin-scope regions and the global scope zone in group address ranges Figure 7-8, the group address ranges of admin-scope-scope regions BSR1 and BSR2 have no intersection, whereas the group address range of BSR3 is a subset of the address range of BSR1.
Page 123 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration The SSM model provides a solution for source-specific multicast. It maintains the relationships between hosts and routers through IGMPv3. In actual application, part of the PIM-SM technique is adopted to implement the SSM model.
Page 124: Protocols And Standards
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration As shown in Figure 7-9, Host B and Host C are multicast information receivers. They send IGMPv3 report messages denoted as (Include S, G) to the respective DRs to express their interest in the information of the specific multicast source S.
Page 125: Configuring Pim-Dm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration 7.2 Configuring PIM-DM 7.2.1 PIM-DM Configuration Task List Complete these tasks to configure PIM-DM: Task Remarks Enabling PIM-DM Required Enabling State Refresh Optional Configuring State Refresh Parameters...
Page 126: Enabling State Refresh
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration To do... Use the command... Remarks Required Enable PIM-DM pim dm Disabled by default Caution: All the interfaces of the same router must work in the same PIM mode.
Page 127: Configuring Pim-Dm Graft Retry Period
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration control the propagation scope of state refresh messages, you need to configure an appropriate TTL value based on the network size. Follow these steps to configure state refresh parameters: To do...
Page 128: Configuring Pim-Sm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration 7.3 Configuring PIM-SM Note: A device can serve as a C-RP and a C-BSR at the same time. 7.3.1 PIM-SM Configuration Task List Complete these tasks to configure PIM-SM:...
Page 129: Enabling Pim-Sm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Bootstrap timeout time An ACL rule defining a legal C-RP address range and the range of multicast groups to be served C-RP-Adv interval C-RP timeout time The IP address of a static RP...
Page 130: Configuring A Bsr
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration 7.3.4 Configuring a BSR Note: The BSR is dynamically elected from a number of C-BSRs. Because it is unpredictable which router will finally win a BSR election, the commands introduced in this section must be configured on all C-BSRs.
Page 131 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration perform neighbor check and RPF check on BSR messages and discard unwanted messages. When a router in the network is controlled by an attacker or when an illegal router...
Page 132 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration To do... Use the command... Remarks c-bsr global Required Configure a global-scope [ hash-length No global-scope C-BSRs C-BSR hash-length | priority by default priority ] * III. Configuring an admin-scope C-BSR By default, a PIM-SM domain has only one BSR.
Page 133 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Follow these steps to configure a BSR admin-scope region boundary: To do... Use the command... Remarks Enter system view system-view — interface interface-type Enter interface view —...
Page 134: Configuring An Rp
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Note: About the bootstrap timeout time: By default, the bootstrap timeout time is determined by this formula: Bootstrap timeout = Bootstrap interval × 2 + 10. The default bootstrap interval is 60 seconds, so the default bootstrap timeout = 60 ×...
Page 135 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration To do… Use the command… Remarks static-rp rp-address Optional Configure a static RP [ acl-number ] No static RP by default [ preferred ] II. Configuring a C-RP In a PIM-SM domain, you can configure routers that intend to become the RP as C-RPs.
Page 136 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration III. Enabling auto-RP Auto-RP announcement and discovery messages are respectively addressed to the multicast group addresses 224.0.1.39 and 224.0.1.40. With auto-RP enabled on a device, the device can receive these two types of messages and record the RP information carried in such messages.
Page 137: Configuring Pim-Sm Register Messages
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Note: The commands introduced in this section are to be configured on C-RPs. For the configuration of other timers in PIM-SM, refer to Configuring PIM Common Timers.
Page 138: Disabling Rpt-To-Spt Switchover
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration To do... Use the command... Remarks Optional Configure a filtering rule register-policy No register filtering rule by for register messages acl-number default Optional Configure the device to...
Page 139: Configuring Pim-Ssm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Note: The support for the timer spt-switch command depends on the specific device model. Typically, you need to configure the above-mentioned parameters on the receiver-side DR and the RP only. Since both the DR and RP are elected, however, you should carry out these configurations on the routers that may win the DR election and on the C-RPs that may win RP elections.
Page 140: Enabling Pim-Sm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration 7.4.3 Enabling PIM-SM The SSM model is implemented based on some subsets of PIM-SM. Therefore, a router is PIM-SSM capable after you enable PIM-SM on it. When deploying a PIM-SM domain, you are recommended to enable PIM-SM on all interfaces of non-border routers (border routers are PIM-enabled routers located on the boundary of BSR admin-scope regions).
Page 141: Configuring Pim Common Information
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Note: The commands introduced in this section are to be configured on all routers in the PIM domain. Caution: Make sure that the same SSM group range is configured on all routers in the entire domain.
Page 142: Configuration Prerequisites
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration 7.5.2 Configuration Prerequisites Before configuring PIM common information, complete the following tasks: Configure any unicast routing protocol so that all devices in the domain are interoperable at the network layer.
Page 143: Configuring Pim Hello Options
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Note: Generally, a smaller distance from the filter to the multicast source results in a more remarkable filtering effect. This filter works not only on independent multicast data but also on multicast data encapsulated in register messages.
Page 144 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration new generation ID. If a PIM router finds that the generation ID in a hello message from the upstream router has changed, it assumes that the status of the upstream neighbor is lost or the upstream neighbor has changed.
Page 145: Configuring Pim Common Timers
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration To do... Use the command... Remarks Optional Configure the prune delay pim hello-option 500 milliseconds by time (LAN-delay) lan-delay interval default Optional Configure the prune pim hello-option...
Page 146 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration I. Configuring PIM common timers globally Follow these steps to configure PIM common timers globally: To do... Use the command... Remarks Enter system view system-view — Enter PIM view —...
Page 147: Configuring Join/Prune Message Limits
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Note: If there are no special networking requirements, we recommend that you use the default settings. 7.5.6 Configuring Join/Prune Message Limits A larger join/prune message size will result in loss of a larger amount of information when a message is lost;...
Page 148: Pim Configuration Examples
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration To do... Use the command... Remarks View the information Available in any about unacknowledged display pim grafts view graft messages View the PIM information display pim interface...
Page 149 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Switch A connects to stub network N1 through VLAN-interface 100, and to Switch D through VLAN-interface 103. Switch B and Switch C connect to stub network N2 through their respective VLAN-interface 200, and to Switch D through VLAN-interface 101 and VLAN-interface 102 respectively.
Page 150 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration among the switches through a unicast routing protocol. Detailed configuration steps are omitted here. Enable IP multicast routing, and enable PIM-DM on each interface # Enable IP multicast routing on Switch A, enable PIM-DM on each interface, and enable IGMPv2 on VLAN-interface 100, which connects Switch A to the stub network.
Page 151 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Carry out the display pim neighbor command to view the PIM neighboring relationships among the switches. For example: # View the PIM neighboring relationships on Switch D.
Page 152: Pim-Sm Configuration Example
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration The information on Switch B and Switch C is similar to that on Switch A. # View the PIM routing table information on Switch D. [SwitchD] display pim routing-table Total 0 (*, G) entry;...
Page 153 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration II. Network diagram Device Interface IP address Device Interface IP address Switch A Vlan-int100 10.110.1.1/24 Switch D Vlan-int300 10.110.5.1/24 Vlan-int101 192.168.1.1/24 Vlan-int101 192.168.1.2/24 Vlan-int102 192.168.9.1/24 Vlan-int105 192.168.4.2/24...
Page 154 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration <SwitchA> system-view [SwitchA] multicast routing-enable [SwitchA] interface vlan-interface 100 [SwitchA-Vlan-interface100] igmp enable [SwitchA-Vlan-interface100] pim sm [SwitchA-Vlan-interface100] quit [SwitchA] interface vlan-interface 101 [SwitchA-Vlan-interface101] pim sm [SwitchA-Vlan-interface101] quit [SwitchA] interface vlan-interface 102...
Page 155 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration [SwitchA] display pim bsr-info Elected BSR Address: 192.168.9.2 Priority: 0 Hash mask length: 30 State: Accept Preferred Scope: Not scoped Uptime: 01:40:40 Next BSR message scheduled at: 00:01:42 # View the BSR information and the locally configured C-RP information in effect on Switch E.
Page 156 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Assume that Host A needs to receive information addressed to the multicast group G (225.1.1.1/24). An RPT will be built between Switch A and Switch E. When the multicast source S (10.110.5.100/24) registers with the RP, an SPT will be built between Switch D...
Page 157: Pim-Ssm Configuration Example
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Upstream interface: Vlan-interface300 Upstream neighbor: NULL RPF prime neighbor: NULL Downstream interface(s) information: Total number of downstreams: 1 1: Vlan-interface105 Protocol: pim-sm, UpTime: 00:00:42, Expires:00:02:06 # View the PIM routing table information on Switch E.
Page 158 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration II. Network diagram Device Interface IP address Device Interface IP address Switch A Vlan-int100 10.110.1.1/24 Switch D Vlan-int300 10.110.5.1/24 Vlan-int101 192.168.1.1/24 Vlan-int101 192.168.1.2/24 Vlan-int102 192.168.9.1/24 Vlan-int105 192.168.4.2/24...
Page 159 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration <SwitchA> system-view [SwitchA] multicast routing-enable [SwitchA] interface vlan-interface 100 [SwitchA-Vlan-interface100] igmp enable [SwitchA-Vlan-interface100] igmp version 3 [SwitchA-Vlan-interface100] pim sm [SwitchA-Vlan-interface100] quit [SwitchA] interface vlan-interface 101 [SwitchA-Vlan-interface101] pim sm...
Page 160: Troubleshooting Pim Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration multicast routing entries. You can use the display pim routing-table command to view the PIM routing table information on each switch. For example: # View the PIM routing table information on Switch A.
Page 161 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration II. Analysis When PIM-DM runs on the entire network, multicast data is flooded from the first hop router connected with the multicast source to the last hop router connected with the clients along the SPT.
Page 162: Multicast Data Abnormally Terminated On An Intermediate Router
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration Check that the same PIM mode is enabled on related interfaces. Use the display pim interface verbose command to check whether the same PIM mode is enabled on the RPF interface and the corresponding interface of the RPF neighbor router.
Page 163: No Unicast Route Between Bsr And C-Rps In Pim-Sm
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration II. Analysis As the core of a PIM-SM domain, the RPs serve specific multicast groups. Multiple RPs can coexist in a network. Make sure that the RP information on all routers is exactly the same, and a specific group is mapped to the same RP.
Page 164 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 7 PIM Configuration and the BSR. Make sure that each C-RP has a unicast route to the BSR, the BSR has a unicast route to each C-RP, and all the routers in the entire network have a unicast route to the RP.
Page 165: Chapter 8 Msdp Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Chapter 8 MSDP Configuration When configuring MSDP, go to these sections for information you are interested in: MSDP Overview MSDP Configuration Task List Displaying and Maintaining MSDP...
Page 166: How Msdp Works
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Caution: MSDP is applicable only if the intra-domain multicast protocol is PIM-SM. MSDP is meaningful only for the any-source multicast (ASM) model. 8.1.2 How MSDP Works I. MSDP peers...
Page 167 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration data from the multicast source arrives, the receiver-side MSDP peer forwards the data to the receivers along the RPT. Intermediate MSDP peer: an MSDP peer with multicast remote MSDP peers, like RP 2.
Page 168 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Receiver DR 2 MSDP peers Multicast packets SA message RP 2 Join message PIM-SM 2 Register message DR 1 Source PIM-SM 4 RP 1 RP 3 PIM-SM 1...
Page 169 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration hop towards DR 1 at the multicast source side, so that it can directly join the SPT rooted at the source over other PIM-SM domains. Then, the multicast data can flow along the SPT to RP 2 and is forwarded by RP 2 to the receivers along the RPT.
Page 170 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Source RP 1 RP 5 RP 9 RP 8 AS 1 AS 5 Mesh group AS 3 RP 2 RP 3 AS 2 MSDP peers RP 4...
Page 171 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration When RP 8 receives the SA message from RP 7 An EBGP route exists between two MSDP peers in different ASs. Because the SA message is from an MSDP peer (RP 7) in a different AS, and the MSDP peer is the next hop on the EBGP route to the source-side RP, RP 8 accepts the message and forwards it to its other peer (RP 9).
Page 172: Protocols And Standards
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration The work process of Anycast RP is as follows: The multicast source registers with the nearest RP. In this example, Source registers with RP 1, with its multicast data encapsulated in the register message.
Page 173: Msdp Configuration Task List
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration 8.2 MSDP Configuration Task List Complete these tasks to configure MSDP: Task Remarks Enabling MSDP Required Configuring Basic Functions of Creating an MSDP Peer Connection Required MSDP...
Page 174: Creating An Msdp Peer Connection
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration To do... Use the command... Remarks Enter system view system-view — Required Enable IP multicast multicast routing routing-enable Disabled by default Required Enable MSDP and enter msdp...
Page 175: Configuring An Msdp Peer Connection
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration To do... Use the command... Remarks Required static-rpf-peer Configure a static RPF peer-address [ rp-policy No static RPF peer peer ip-prefix-name ] configured by default Note: If only one MSDP peer is configured on a router, this MSDP will be registered as a static RPF peer.
Page 176: Configuring An Msdp Mesh Group
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration 8.4.3 Configuring an MSDP Mesh Group An AS may contain multiple MSDP peers. You can use the MSDP mesh group mechanism to avoid SA message flooding among these MSDP peers and optimize the multicast traffic.
Page 177: Configuring Sa Messages Related Parameters
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration When a new MSDP peer is created, or when a previously deactivated MSDP peer connection is reactivated, or when a previously failed MSDP peer attempts to resume operation, a TCP connection is required.
Page 178: Configuring Sa Request Messages
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration message containing the multicast packet in an SA message and sends it out. After receiving the SA message, the remote RP decapsulates the SA message and delivers the multicast data contained in the register message to the receivers along the RPT.
Page 179: Configuring An Sa Message Filtering Rule
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration To do... Use the command... Remarks Optional peer peer-address Configure a filtering rule sa-request-policy [ acl SA request messages are for SA request messages acl-number ] not filtered by default...
Page 180: Configuring Sa Message Cache
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration To do... Use the command... Remarks Configure the minimum TTL value of multicast Optional peer peer-address packets to be minimum-ttl ttl-value 0 by default encapsulated in SA messages 8.5.5 Configuring SA Message Cache...
Page 181: Msdp Configuration Examples
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration To do... Use the command... Remarks View the (S, G) entry display msdp sa-cache Available in information in the MSDP [ group-address | source-address | any view...
Page 182 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration II. Network diagram Device Interface IP address Device Interface IP address Switch A Vlan-int103 10.110.1.2/24 Switch D Vlan-int104 10.110.4.2/24 Vlan-int100 10.110.2.1/24 Vlan-int300 10.110.5.1/24 Vlan-int200 10.110.3.1/24 Switch E Vlan-int105 10.110.6.1/24...
Page 183 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration # Enable IP multicast routing on Switch A, enable PIM-SM on each interface, and enable IGMP on the host-side interface VLAN-interface 200. <SwitchA> system-view [SwitchA] multicast routing-enable...
Page 184 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration [SwitchC-bgp] peer 192.168.3.2 as-number 200 [SwitchC-bgp] import-route ospf 1 [SwitchC-bgp] quit # Configure IBGP on Switch E, and redistribute OSPF routes. [SwitchE] bgp 200 [SwitchE-bgp] router-id 3.3.3.3 [SwitchE-bgp] peer 192.168.3.1 as-number 200...
Page 185 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Peer MsgRcvd MsgSent OutQ PrefRcv Up/Down State 192.168.1.2 4 200 6 00:13:09 Established # View the information about BGP peering relationships on Switch C. [SwitchC] display bgp peer BGP local router ID : 2.2.2.2...
Page 186 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration 192.168.1.1 100? *> 192.168.1.1/32 0.0.0.0 *> 192.168.1.2/32 0.0.0.0 192.168.1.1 100? *> 192.168.3.0 0.0.0.0 192.168.3.2 *> 192.168.3.1/32 0.0.0.0 *> 192.168.3.2/32 0.0.0.0 192.168.3.2 When the multicast source in PIM-SM 1 (Source 1) and the multicast source in PIM-SM 2 (Source 2) send multicast information, receivers in PIM-SM 1 and PIM-SM 3 can receive the multicast data.
Page 187: Inter-As Multicast Configuration Leveraging Static Rpf Peers
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration MSDP Peer 192.168.1.2, AS 200 Description: Information about connection status: State: Up Up/down time: 00:15:47 Resets: 0 Connection interface: Vlan-interface101 (192.168.1.1) Number of sent/received messages: 16/16 Number of discarded output messages: 0...
Page 188 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Switch E, so that any switch can receive SA messages only from its static RPF peer(s) and permitted by the corresponding filtering policy. II. Network diagram AS 100...
Page 189 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Enable IP multicast routing, enable PIM-SM and IGMP, and configure a PIM-SM domain border # Enable IP multicast routing on Switch A, enable PIM-SM on each interface, and enable IGMP on the host-side interface VLAN-interface 200.
Page 190 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration [SwitchB-msdp] peer 192.168.1.2 connect-interface vlan-interface 101 [SwitchB-msdp] static-rpf-peer 192.168.3.1 rp-policy list-df [SwitchB-msdp] static-rpf-peer 192.168.1.2 rp-policy list-df [SwitchB-msdp] quit # Configure Switch B as a static RPF peer of Switch C.
Page 191: Anycast Rp Configuration
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Peer's Address State Up/Down time SA Count Reset Count 192.168.1.1 01:07:09 # View the brief MSDP peer information on Switch E. [SwitchE] display msdp brief MSDP Peer Brief Information...
Page 192 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration II. Network diagram Source 1 Source 2 Switch A Switch C Switch E Vlan-int300 Vlan-int400 Receiver 1 Receiver 2 Switch B Switch D Vlan-int100 Vlan-int200 Loop10 Loop10...
Page 193 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration [SwitchB] interface vlan-interface 100 [SwitchB-Vlan-interface100] igmp enable [SwitchB-Vlan-interface100] pim sm [SwitchB-Vlan-interface100] quit [SwitchB] interface vlan-interface 103 [SwitchB-Vlan-interface103] pim sm [SwitchB-Vlan-interface103] quit [SwitchB] interface Vlan-interface 101 [SwitchB-Vlan-interface101] pim sm...
Page 194 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Verify the configuration You can use the display msdp brief command to view the brief information of MSDP peering relationships between the switches. # View the brief MSDP peer information on Switch B.
Page 195 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration (10.110.5.100, 225.1.1.1) RP: 10.1.1.1 (local) Protocol: pim-sm, Flag: SPT 2MSDP ACT UpTime: 00:46:28 Upstream interface: Vlan-interface103 Upstream neighbor: 10.110.2.2 RPF prime neighbor: 10.110.2.2 Downstream interface(s) information: Total number of downstreams: 1...
Page 196: Troubleshooting Msdp
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Protocol: pim-sm, Flag: SPT 2MSDP ACT UpTime: 00:40:22 Upstream interface: Vlan-interface104 Upstream neighbor: 10.110.4.2 RPF prime neighbor: 10.110.4.2 Downstream interface(s) information: Total number of downstreams: 1 1: Vlan-interface200...
Page 197: Inter-Rp Communication Faults In Anycast Rp Application
Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration II. Analysis The import-source command is used to control sending (S, G) entries through SA messages to MSDP peers. If this command is executed without the acl-number argument, all the (S, G) entries will be filtered off, namely no (S, G) entries of the local domain will be advertised.
Page 198 Operation Manual – Multicast H3C S5500-EI Series Ethernet Switches Chapter 8 MSDP Configuration Check the configuration of the originating-rp command. In the Anycast RP application environment, be sure to use the originating-rp command to configure the RP address in the SA messages, which must be the local interface address.
Page 199: Chapter 9 Multicast Routing And Forwarding Configuration
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration Chapter 9 Multicast Routing and Forwarding Configuration When configuring multicast routing and forwarding, go to these sections for information you are interested in: Multicast Routing and Forwarding Overview...
Page 200: Rpf Mechanism
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration 9.1.2 RPF Mechanism When creating multicast routing table entries, a multicast routing protocol uses the reverse path forwarding (RPF) mechanism to ensure multicast data delivery along the correct path.
Page 201 Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration unicast route; instead, it relies on the existing unicast routing information or multicast static routes in creating multicast routing entries. When performing an RPF check, a router searches its unicast routing table and multicast static routing table at the same time.
Page 202: Multicast Static Routes
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration Figure 9-1 RPF check process A multicast packet from Source arrives on VLAN-interface 1 of Switch C, and the corresponding forwarding entry does not exist in the multicast forwarding table of Switch C.
Page 203: Multicast Traceroute
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration unicast RPF route and the optimal multicast static route respectively from the routing tables, and uses one of them as the RPF route after comparison.
Page 204: Configuration Task List
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration Request, with the IGMP Type field set to 0x1F, and Response, with the IGMP Type field set to 0x1E. III. Process of multicast traceroute The querier sends a query to the last-hop router.
Page 205: Enabling Ip Multicast Routing
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration The maximum number of routing entries in a multicast forwarding table 9.3.2 Enabling IP Multicast Routing Before configuring any Layer 3 multicast functionality, you must enable IP multicast routing.
Page 206: Configuring A Multicast Route Match Rule
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration Follow these steps to configure a multicast static route: To do... Use the command... Remarks Enter system view system-view — ip rpf-route-static source-address { mask |...
Page 207: Configuring A Multicast Forwarding Range
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration Follow these steps to configure multicast load splitting: To do... Use the command... Remarks Enter system view system-view — multicast load-splitting Required Configuring multicast load...
Page 208: Tracing A Multicast Path
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration routing protocol. In addition, newly added downstream nodes cannot be installed to the routing entry into the forwarding table. If the configured maximum number of routing entries in the multicast forwarding table is smaller than the current number, the routes in excess of the configured limit will not be deleted immediately;...
Page 209: Displaying And Maintaining Multicast Routing And Forwarding
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration 9.4 Displaying and Maintaining Multicast Routing and Forwarding To do... Use the command... Remarks display multicast boundary View the multicast [ group-address [ mask | mask-length ] ]...
Page 210: Configuration Examples
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration Caution: The reset command clears the information in the multicast routing table or the multicast forwarding table, and thus may cause failure of multicast transmission.
Page 211 Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration III. Configuration procedure Configure the interface IP addresses and enable unicast routing on each switch Configure the IP address and subnet mask for each interface as per Figure 9-3.
Page 212: Creating An Rpf Route
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration [SwitchB] display multicast rpf-info 50.1.1.100 RPF information about source 50.1.1.100: RPF interface: Vlan-interface102, RPF neighbor: 30.1.1.2 Referenced route/mask: 50.1.1.0/24 Referenced route type: igp Route selection rule: preference-preferred...
Page 213 Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration II. Network diagram PIM-DM OSPF domain Switch A Switch B Switch C Vlan-int102 Vlan-int102 Vlan-int101 30.1.1.2/24 30.1.1.1/24 20.1.1.1/24 Vlan-int101 20.1.1.2/24 Vlan-int300 Vlan-int200 Vlan-int100 50.1.1.1/24 40.1.1.1/24...
Page 214 Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration [SwitchC] interface vlan-interface 300 [SwitchC-Vlan-interface300] pim dm [SwitchC-Vlan-interface300] quit [SwitchC] interface vlan-interface 102 [SwitchC-Vlan-interface102] pim dm [SwitchC-Vlan-interface102] quit The configuration on Switch B is similar to that on Switch A. The specific configuration steps are omitted here.
Page 215: Troubleshooting Multicast Routing And Forwarding
Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration As shown above, the RPF routes to Source 2 exist on Switch B and Switch C. The source is the configured static route. 9.6 Troubleshooting Multicast Routing and Forwarding 9.6.1 Multicast Static Route Failure...
Page 216 Operation Manual – Multicast Chapter 9 Multicast Routing and H3C S5500-EI Series Ethernet Switches Forwarding Configuration II. Analysis If a multicast forwarding boundary has been configured through the multicast boundary command, any multicast packet will be kept from crossing the boundary.

H3C S5500-EI Series Operation Manual

Chapter 1 Multicast Overview

Chapter 2 IGMP Snooping Configuration

Chapter 3 MLD Snooping Configuration

Chapter 4 Multicast VLAN Configuration

Chapter 5 Ipv6 Multicast VLAN Configuration

Chapter 6 IGMP Configuration

Chapter 7 PIM Configuration

Chapter 8 MSDP Configuration

Chapter 9 Multicast Routing and Forwarding Configuration

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