H3C S5500-SI Series Manual
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H3C S5500-SI Series Manual

H3C S5500-SI Series Manual

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Operation Manual - Multicast Protocol
H3C S5500-SI Series Ethernet Switches
Chapter 1 IGMP Snooping Configuration ................................................................................... 1-1
1.1 IGMP Snooping Overview ................................................................................................. 1-1
1.1.1 Principle of IGMP Snooping .................................................................................... 1-1
1.1.2 Basic Concepts in IGMP Snooping ......................................................................... 1-2
1.1.3 Work Mechanism of IGMP Snooping ...................................................................... 1-3
1.2 IGMP Snooping Configuration Tasks ................................................................................ 1-5
1.3 Configuring Basic Functions of IGMP Snooping ............................................................... 1-6
1.3.1 Configuration Prerequisites..................................................................................... 1-6
1.3.2 Enabling IGMP Snooping........................................................................................ 1-6
1.3.3 Configuring the Version of IGMP Snooping ............................................................ 1-7
1.3.4 Configuring Port Aging Timers ................................................................................ 1-8
1.4 Configuring Port Functions ................................................................................................ 1-9
1.4.1 Configuration Prerequisites..................................................................................... 1-9
1.4.2 Configuring Static Ports .......................................................................................... 1-9
1.4.3 Enabling the Function of Simulating Member Hosts ............................................. 1-10
1.4.4 Enabling the Fast Leave Feature .......................................................................... 1-11
1.4.5 Configuring IGMP Report Suppression................................................................. 1-12
1.5 Configuring IGMP-Related Functions .............................................................................. 1-13
1.5.1 Configuration Prerequisites................................................................................... 1-13
1.5.2 Enabling IGMP Snooping Querier......................................................................... 1-13
1.5.3 Configuring IGMP Timers...................................................................................... 1-14
1.5.4 Configuring Source IP Address of IGMP Queries................................................. 1-15
1.6 Configuring a Multicast Group Policy............................................................................... 1-16
1.6.1 Configuration Prerequisites................................................................................... 1-16
1.6.2 Configuring a Multicast Group Filter...................................................................... 1-16
1.6.3 Configuring Multicast Source Port Filtering........................................................... 1-17
1.6.5 Configuring Multicast Group Replacement ........................................................... 1-19
1.7 Displaying and Maintaining IGMP Snooping ................................................................... 1-20
1.8 IGMP Snooping Configuration Examples ........................................................................ 1-21
1.8.1 Simulating Member Hosts ..................................................................................... 1-21
1.8.2 Static Router Port Configuration ........................................................................... 1-23
1.9 Troubleshooting IGMP Snooping Configuration .............................................................. 1-25
1.9.1 Switch Fails in Layer 2 Multicast Forwarding........................................................ 1-25
1.9.2 Configured Multicast Group Policy Fails to Take Effect........................................ 1-25

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  • Page 1: Table Of Contents

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Table of Contents Table of Contents Chapter 1 IGMP Snooping Configuration ................... 1-1 1.1 IGMP Snooping Overview ....................1-1 1.1.1 Principle of IGMP Snooping ..................1-1 1.1.2 Basic Concepts in IGMP Snooping ................. 1-2 1.1.3 Work Mechanism of IGMP Snooping ..............
  • Page 2 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Table of Contents Chapter 2 MLD Snooping Configuration..................2-1 2.1 MLD Snooping Overview ....................2-1 2.1.1 How MLD Snooping Works ..................2-1 2.1.2 Basic Concepts in MLD Snooping................2-2 2.1.3 Work Mechanism of MLD Snooping ............... 2-3 2.2 MLD Snooping Configuration Tasks ..................

  • Page 3: Chapter 1 Igmp Snooping Configuration

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Chapter 1 IGMP Snooping Configuration When configuration IGMP Snooping, go to the following sections for information you are interested in: IGMP Snooping Overview Configuring Basic Functions of IGMP Snooping...

  • Page 4: Basic Concepts In Igmp Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Multicast packet transmission Multicast packe t transmission without IGMP Snooping when IGMP Sn ooping runs Multicast Multicast Router Router Source Source Layer 2 Ethernet Layer 2 Ethernet...

  • Page 5: Work Mechanism Of Igmp Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Router port: On an Ethernet switch, a router port connects the switch to a multicast router. In the figure, GigabitEthernet1/0/1 of Switch A and GigabitEthernet1/0/1 of Switch B are router ports.
  • Page 6 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration If the receiving port is a router port existing in its router port list, the switch resets the aging timer of this router port. If the receiving port is not a router port existing in its router port list, the switch adds it into its router port list and sets an aging timer for this router port.

  • Page 7: Igmp Snooping Configuration Tasks

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Upon receiving the IGMP leave message from a host, the IGMP querier resolves from the message the address of the multicast group that the host just left and sends an IGMP group-specific query to that multicast group through the port that received the leave message.

  • Page 8: Configuring Basic Functions Of Igmp Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Task Remarks Configuring a Multicast Group Filter Optional Configuring Multicast Source Port Optional Filtering Configuring a Multicast Configuring Maximum Multicast Group Policy Optional Groups that Can Pass Ports...

  • Page 9: Configuring The Version Of Igmp Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration To do... Use the command... Remarks Enter system view system-view — Enable IGMP Snooping Required globally and enter IGMP igmp-snooping Disabled by default Snooping view...

  • Page 10: Configuring Port Aging Timers

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Caution: If you switch IGMP Snooping from version 3 to version 2, the system will: Keep forwarding entries for version 3 static (*, G) joins;...

  • Page 11: Configuring Port Functions

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration To do... Use the command... Remarks igmp-snooping Optional Configure router port router-aging-time aging time 105 seconds by default interval Optional Configure member port igmp-snooping aging time...

  • Page 12: Enabling The Function Of Simulating Member Hosts

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Note: The function of static joining to a multicast source/group is available only if a valid multicast source address is specified and IGMP Snooping version 3 is currently running.

  • Page 13: Enabling The Fast Leave Feature

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration To do... Use the command... Remarks Enable the function simulating Required igmp-snooping host-join member host of a group-address source-ip Disabled multicast group or source-address ] vlan vlan-id...

  • Page 14: Configuring Igmp Report Suppression

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration To do... Use the command... Remarks Enter system view system-view — Enter Enter Ethernet interface interface-type port view interface-number corre either port-group manual spon command...

  • Page 15: Configuring Igmp-Related Functions

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration 1.5 Configuring IGMP-Related Functions 1.5.1 Configuration Prerequisites Before configuring IGMP-related functions, complete the following task: Enable IGMP Snooping in the VLAN Before configuring IGMP-related functions, prepare the following data:...

  • Page 16: Configuring Igmp Timers

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration 1.5.3 Configuring IGMP Timers You can tune the IGMP general query interval based on actual condition of the network. Upon receiving an IGMP query (general query or group-specific query), a host starts a timers for each multicast group it has joined.

  • Page 17: Configuring Source Ip Address Of Igmp Queries

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration To do... Use the command... Remarks Optional Configure IGMP general igmp-snooping query interval query-interval interval 60 second by default Configure the maximum igmp-snooping Optional response time to IGMP...

  • Page 18: Configuring The Function Of Dropping Unknown Multicast Data

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration 1.5.5 Configuring the Function of Dropping Unknown Multicast Data Unknown multicast data refers to multicast data whose forwarding entries do not exist in the corresponding multicast forwarding table.

  • Page 19: Configuring Multicast Source Port Filtering

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration group list; otherwise the switch drops this report message. Thus, the multicast data will not be sent to this port. In this way, the service provider can control the VOD programs provided for multicast users.

  • Page 20: Configuring Maximum Multicast Groups That Can Pass Ports

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration I. Configuring multicast source port filtering globally Follow these steps to configure multicast source port filtering globally: To do... Use the command... Remarks Enter system view system-view —...

  • Page 21: Configuring Multicast Group Replacement

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration To do... Use the command... Remarks Enter Enter Ethernet interface interface-type interface-number port view corre either spon command Enter port port-group { manual port-group-name |...

  • Page 22: Displaying And Maintaining Igmp Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration To do... Use the command... Remarks Enter IGMP Snooping — igmp-snooping view Required Configure multicast overflow-replace [ vlan vlan-list ] group replacement Disabled by default II.

  • Page 23: Igmp Snooping Configuration Examples

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Note: The reset igmp-snooping group command works only on an IGMP Snooping–enabled VLAN. The reset igmp-snooping group command cannot clear IGMP Snooping entries derived from static configuration.
  • Page 24 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration # Add ports GigabitEthernet1/01 through GigabitEthernet1/0/4 into VLAN 100. [SwitchA-vlan100] port GigabitEthernet 1/0/1 to GigabitEthernet1/0/4 [SwitchA-vlan100] quit Enabling the function of simulating member hosts of a multicast source/group # Enable IGMP Snooping in VLAN 100, and set its version to 3.

  • Page 25: Static Router Port Configuration

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration GigabitEthernet 1/0/3 (D) ( 00:03:23 ) GigabitEthernet 1/0/4 (D) ( 00:03:23 ) MAC group(s): MAC group address:0100-5e01-0101 Host port(s):total 2 port. GigabitEthernet 1/0/3 GigabitEthernet 1/0/4 As shown above, GigabitEthernet 1/0/3 and GigabitEthernet 1/0/4 of Switch A have joined multicast source/group (1.1.1.1, 224.1.1.1).
  • Page 26 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration [SwitchA-vlan100] port GigabitEthernet1/0/1 to GigabitEthernet1/0/4 [SwitchA-vlan100] quit Configuring a static router port # Enable IGMP Snooping in VLAN 100. [SwitchA] igmp-snooping [SwitchA-igmp-snooping] quit [SwitchA] vlan 100...

  • Page 27: Troubleshooting Igmp Snooping Configuration

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration 1.9 Troubleshooting IGMP Snooping Configuration 1.9.1 Switch Fails in Layer 2 Multicast Forwarding I. Symptom A switch fails to implement Layer 2 multicast forwarding. II. Analysis IGMP Snooping is not enabled.
  • Page 28 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 1 IGMP Snooping Configuration Use the display current-configuration command to whether the function of dropping unknown multicast data is enabled. If not, use the drop-unknown or igmp-snooping drop-unknown command to enable the function of dropping unknown multicast data.

  • Page 29: Chapter 2 Mld Snooping Configuration

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Chapter 2 MLD Snooping Configuration When configuring MLD Snooping, go to these sections for information you are interested in: MLD Snooping Overview Configuring Basic Functions of MLD Snooping...

  • Page 30: Basic Concepts In Mld Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Multicast packet transmission Multicast packe t transmission without MLD Snooping when MLD Sn ooping runs Multicast Multicast Router Router Source Source Layer 2 Ethernet Layer 2 Ethernet...

  • Page 31: Work Mechanism Of Mld Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Router port: On an Ethernet switch, a router port connects the switch to a multicast router. In the figure, GigabitEthernet1/0/1 of Switch A and GigabitEthernet1/0/1 of Switch B are router ports.
  • Page 32 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration If the receiving port is a router port existing in its router port list, the switch resets the aging timer of this router port. If the receiving port is not a router port existing in its router port list, the switch adds it into its router port list and sets an aging timer for this router port.

  • Page 33: Mld Snooping Configuration Tasks

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration If an MLD report from that IPv6 multicast group arrives to this member port before its aging timer expires as a response to the MLD group-specific query , this means that some other members of that IPv6 multicast group still exist under the port: the switch resets the aging timer of the member port.

  • Page 34: Configuring Basic Functions Of Mld Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Note: Configurations performed 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 35: Configuring Port Aging Timers

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Note: MLD Snooping must be enabled globally before it can be enabled in a VLAN. If you enable MLD Snooping in a specified VLAN, this function takes effect for Ethernet ports in this VLAN only.

  • Page 36: Configuring Port Functions

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration To do... Use the command... Remarks Optional Configure member port mld-snooping aging time host-aging-time interval 260 seconds by default 2.4 Configuring Port Functions 2.4.1 Configuration Prerequisites...

  • Page 37: Enabling The Function Of Simulating Member Hosts

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Note: When you configure or remove a port as a static member port of an IPv6 multicast group, the port will not initiate an MLD report or an MLD done message.

  • Page 38: Configuring The Fast Leave Feature

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Note: Each simulated host is equivalent to an independent host. For example, when receiving an MLD query, the simulated host corresponding to each configuration responds respectively.

  • Page 39: Configuring Mld Report Suppression

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration To do... Use the command... Remarks Required mld-snooping fast-leave [ vlan Enable the fast leave feature Disabled vlan-list ] default Caution: If the fast leave feature is enabled on a port to which more than one host is connected,...

  • Page 40: Enabling Mld Snooping Querier

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Before configuring MLD-related functions, 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...
  • Page 41 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration received). When the timer value comes down to 0, the host sends an MLD report to the corresponding IPv6 multicast group. An appropriate setting of the maximum response time for MLD queries allows hosts to...

  • Page 42: Configuring Source Ipv6 Addresses Of Mld Queries

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration To do... Use the command... Remarks Configure mld-snooping Optional last-member query last-member-query-inter 1 second by default interval val interval Caution: In the configuration, make sure that the MLD general query interval is larger than the maximum response time for MLD general queries.

  • Page 43: Configuring An Ipv6 Multicast Group Policy

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration To do... Use the command... Remarks Enter system view system-view — Enter VLAN view vlan vlan-id — Enable the function of Required mld-snooping dropping unknown IPv6...

  • Page 44: Configuring Ipv6 Multicast Source Port Filtering

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration To do... Use the command... Remarks Enter system view system-view — Enter MLD Snooping mld-snooping — view Required Configure IPv6 group-policy acl-number No IPv6 filter configured...

  • Page 45: Configuring Maximum Multicast Groups That Can Pass Ports

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration To do... Use the command... Remarks Required Enable IPv6 multicast source-deny port source port filtering interface-list Disabled by default II. Configuring IPv6 multicast source port filtering on a port or a group ports...

  • Page 46: Configuring Ipv6 Multicast Group Replacement

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration To do... Use the command... Remarks Enter interface interface-type Ethernet port interface-number Enter either correspond command port-group manual ing view Enter port port-group-name group view...

  • Page 47: Displaying And Maintaining Mld Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration To do... Use the command... Remarks Enter MLD Snooping view mld-snooping — Required Configure IPv6 multicast overflow-replace [ vlan group replacement vlan-list ] Disabled by default II.

  • Page 48: Mld Snooping Configuration Examples

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration Note: The reset mld-snooping group command works only on an MLD Snooping–enabled VLAN, but not on a VLAN with MLD enabled on its VLAN interface.
  • Page 49 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration [SwitchA-vlan100] port GigabitEthernet1/0/1 to GigabitEthernet1/0/4 [SwitchA-vlan100] quit Enabling simulated host joining to an IPv6 multicast group # Enable MLD Snooping in VLAN 100. [SwitchA] mld-snooping...

  • Page 50: Static Router Port Configuration

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration GigabitEthernet1/0/3 GigabitEthernet1/0/4 As shown above, GigabitEthernet1/0/3 and GigabitEthernet1/0/4 of Switch A have joined IPv6 multicast group (ff1e::1). 2.8.2 Static Router Port Configuration I. Network requirements No multicast protocol is running on Router B.

  • Page 51: Troubleshooting Mld Snooping

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration [SwitchA] vlan 100 [SwitchA-vlan100] mld-snooping enable [SwitchA-vlan100] quit # Configure GigabitEthernet1/0/4 to be a static router port. [SwitchA] interface GigabitEthernet1/0/4 [SwitchA- GigabitEthernet1/0/4] mld-snooping static-router-port vlan 100...

  • Page 52: Configured Ipv6 Multicast Group Policy Fails To Take Effect

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration II. Analysis MLD Snooping is not enabled. 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 53 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 2 MLD Snooping Configuration whether this configuration conflicts with the configured IPv6 multicast group policy. If any conflict exists, remove the port as a static member of the IPv6 multicast group.

  • Page 54: Chapter 3 Multicast Vlan Configuration

    Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 3 Multicast VLAN Configuration Chapter 3 Multicast VLAN Configuration 3.1 Introduction to Multicast VLAN As shown in Figure 3-1, 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 55: Displaying And Maintaining Multicast Vlan

    The VLANs to be configured as the sub-VLANs of the multicast VLAN must not be sub-VLANs of another multicast VLAN The number of sub-VLANs of the multicast VLAN must not exceed the system-defined limit (Currently, S5500-SI Series Ethernet Switches only support one multicast VLAN, and each one can configure up to 63 sub-VLANs). Caution:...
  • Page 56 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 3 Multicast VLAN Configuration Switch A’s GigabitEthernet1/0/1 belongs to VLAN1024, GigabitEthernet1/0/2 through GigabitEthernet1/0/6 belong to VLAN11 through VLAN15 respectively, and Host A throgh Host E are connected to GigabitEthernet1/0/2 through GigabitEthernet1/0/6 of Switch A.
  • Page 57 Operation Manual – Multicast Protocol H3C S5500-SI Series Ethernet Switches Chapter 3 Multicast VLAN Configuration The configuration for VLAN12 through VLAN15 is similar to the configuration for VLAN11. # Configure VLAN1024 as multicast VLAN and configure VLAN11 through VLAN15 as its sub-VLANs.

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