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Huawei Quidway S9300 Configuration Manual

Huawei Quidway S9300 Configuration Manual

Terabit routing switch v100r001c03
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Quidway S9300 Terabit Routing Switch
V100R001C03
Configuration Guide - IP Service
Issue
02
Date
2009-08-06
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.

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  • Page 1 Quidway S9300 Terabit Routing Switch V100R001C03 Configuration Guide - IP Service Issue Date 2009-08-06 Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 2 Huawei Technologies Co., Ltd. provides customers with comprehensive technical support and service. For any assistance, please contact our local office or company headquarters. Huawei Technologies Co., Ltd. Address: Huawei Industrial Base Bantian, Longgang Shenzhen 518129 People's Republic of China Website: http://www.huawei.com...

  • Page 3: Table Of Contents

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service Contents Contents About This Document........................1 1 IP Address Configuration......................1-1 1.1 Introduction to IP Addresses...........................1-2 1.2 IP Address Features Supported by the S9300....................1-2 1.3 Assigning IP Addresses to Interfaces......................1-2 1.3.1 Establishing the Configuration Task......................1-2 1.3.2 Setting a Primary IP Address for an Interface..................1-3...
  • Page 4 Quidway S9300 Terabit Routing Switch Contents Configuration Guide - IP Service 2.5.2 Monitoring the Running Status of DHCP....................2-7 2.6 Configuration Examples..........................2-8 2.6.1 Example for Configuring the DHCP Relay Agent.................2-8 2.6.2 Example for Configuring the DHCP Relay in a Super VLAN............2-10 3 IP Performance Configuration....................3-1...
  • Page 5 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service Contents 5.3.1 Establishing the Configuration Task......................5-3 5.3.2 Enabling the UDP Helper Function.......................5-4 5.3.3 (Optional) Configuring the UDP Port on Which Packets Are Forwarded..........5-4 5.3.4 Configuring the Destination Server for Packet Relay................5-5 5.3.5 Checking the Configuration........................5-5...
  • Page 7 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service Figures Figures Figure 1-1 Networking diagram for setting IP addresses..................1-7 Figure 1-2 Networking diagram for configuring a tunnel interface to borrow an IP address of a loopback interface ....................................1-9 Figure 2-1 Networking diagram for configuring the DHCP relay agent..............2-8 Figure 2-2 Networking diagram for configuring the DHCP relay in a super VLAN.........2-11...
  • Page 9 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service Tables Tables Table 4-1 Relations between values and keywords....................4-5 Table 5-1 Lists of default UDP ports on which packets are forwarded after the UDP helper function is enabled ....................................5-2 Issue 02 (2009-08-06) Huawei Proprietary and Confidential Copyright ©...

  • Page 11: About This Document

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service About This Document About This Document Purpose This document describes the configurations of the IP services of the S9300, including the basic knowledge and configurations of secondary IP addresses, DHCP, IP performance, IP unicast policy-based routing, UDP Helper, .

  • Page 12: General Conventions

    Quidway S9300 Terabit Routing Switch About This Document Configuration Guide - IP Service Chapter Description 3 IP Performance Describes the principle of IP performance and provides Configuration configuration procedures and examples of IP performance. 4 IP Unicast PBR Describes the principle of IP unicast PBR and provides Configuration configuration procedures and examples of IP unicast PBR.

  • Page 13: Command Conventions

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service About This Document Convention Description Courier New Examples of information displayed on the screen are in Courier New. Command Conventions The command conventions that may be found in this document are defined as follows.
  • Page 14 Quidway S9300 Terabit Routing Switch About This Document Configuration Guide - IP Service Format Description Press the key. For example, press Enter and press Tab. Key 1+Key 2 Press the keys concurrently. For example, pressing Ctrl+Alt +A means the three keys should be pressed concurrently.

  • Page 15: Ip Address Configuration

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 1 IP Address Configuration IP Address Configuration About This Chapter This chapter describes the concept and configuration procedures of the IP addresses on the S9300. 1.1 Introduction to IP Addresses This section describes the concept of IP addresses.

  • Page 16: Introduction To Ip Addresses

    Quidway S9300 Terabit Routing Switch 1 IP Address Configuration Configuration Guide - IP Service 1.1 Introduction to IP Addresses This section describes the concept of IP addresses. Each host needs an IP address to communicate with each other on an IP network.

  • Page 17: Setting A Primary Ip Address For An Interface

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 1 IP Address Configuration Pre-configuration Tasks Before setting an IP address for an interface, complete the following tasks: Connecting interfaces and setting the physical parameters of each interface to make the...

  • Page 18: Optional) Setting A Secondary Ip Addresses For An Interface

    Quidway S9300 Terabit Routing Switch 1 IP Address Configuration Configuration Guide - IP Service 1.3.3 (Optional) Setting a Secondary IP Addresses for an Interface Context Do as follows on the S9300. Procedure Step 1 Run: system-view The system view is displayed.

  • Page 19: Establishing The Configuration Task

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 1 IP Address Configuration 1.4.3 Setting the Unnumbered IP Address 1.4.4 Checking the Configuration 1.4.1 Establishing the Configuration Task Applicable Environment In certain application environment, an interface needs to be configured to borrow an IP address from another interface, thus saving IP addresses.

  • Page 20: Setting The Unnumbered Ip Address

    Quidway S9300 Terabit Routing Switch 1 IP Address Configuration Configuration Guide - IP Service Procedure Step 1 Run: system-view The system view is displayed. Step 2 Run: interface interface-type interface-number The interface view is displayed. Step 3 Run: ip address ip-address { mask | mask-length } The primary IP address of the interface is set.

  • Page 21: Configuration Examples

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 1 IP Address Configuration Step 2 Run the display ip interface brief [ interface-type [ interface-number ] ] command to view brief information about the IP address on the interface.
  • Page 22 Quidway S9300 Terabit Routing Switch 1 IP Address Configuration Configuration Guide - IP Service Data Preparation To complete the configuration, you need the following data. Primary IP address and subnet mask of the interface Secondary IP address and subnet mask of the interface Procedure Step 1 Set the IP address for VLANIF 100 where GE 1/0/1 of the S9300 belongs.

  • Page 23: Example For Configuring A Tunnel Interface To Borrow The Ip Address Of A Loopback Interface

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 1 IP Address Configuration ip address 172.16.1.1 255.255.255.0 ip address 172.16.2.1 255.255.255.0 sub interface GigabitEthernet1/0/1 port hybrid pvid vlan 100 port hybrid untagged vlan 100 return 1.5.2 Example for Configuring a Tunnel Interface to Borrow the IP...
  • Page 24 Quidway S9300 Terabit Routing Switch 1 IP Address Configuration Configuration Guide - IP Service IP address for Loopback0 of S9300-A IP address for Loopback0 of S9300-C Index for Loopback0 of S9300-A Index for Loopback0 of S9300-C Procedure Step 1 # Configure S9300-A.
  • Page 25 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 1 IP Address Configuration ip address unnumbered interface LoopBack0 ospf 1 area 0.0.0.0 network 116.116.116.116 0.0.0.0 return Configuration file of S9300-C sysname S9300-C interface LoopBack0 ip address 9.9.9.9 255.255.225.255 interface Tunnel3/0/15...

  • Page 27: Dhcp Configuration

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 2 DHCP Configuration DHCP Configuration About This Chapter This chapter describes the principle of the Dynamic Host Configuration Protocol (DHCP), and provides configuration procedures and examples of DHCP. 2.1 Introduction to DHCP This section describes the principle of DHCP.

  • Page 28: Introduction To Dhcp

    Quidway S9300 Terabit Routing Switch 2 DHCP Configuration Configuration Guide - IP Service 2.1 Introduction to DHCP This section describes the principle of DHCP. With the rapid growth in network scales and complexity, network configuration becomes more complicated; the location of hosts such as portable computers and wireless networks changes;...

  • Page 29: Configuring A Dhcp Server Group

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 2 DHCP Configuration through the DHCP relay agent. To ensure that the clients can obtain IP addresses, the server must be the DHCP server based on the global address pool. That is, the interface connecting the DHCP server and the DHCP relay agent must not be configured with any interface address pool.

  • Page 30: Enabling Dhcp Relay

    Quidway S9300 Terabit Routing Switch 2 DHCP Configuration Configuration Guide - IP Service 2.3.3 Enabling DHCP Relay Context Do as follows on the S9300. NOTE The number of DHCP relay agents between a server and a client must be no more than 4; otherwise, DHCP messages are discarded.

  • Page 31: Checking The Configuration

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 2 DHCP Configuration Step 5 Run: dhcp relay server-select The DHCP server group that is bound to the VLANIF interface is specified. ----End 2.3.5 Checking the Configuration Prerequisite The configurations of DHCP relay are complete.

  • Page 32: Configuring The S9300 To Request The Dhcp Server To Release An Ip Address Of A Client

    Quidway S9300 Terabit Routing Switch 2 DHCP Configuration Configuration Guide - IP Service Obtaining an IP address by a DHCP client through the DHCP server Data Preparation To configure the S9300 to request the DHCP server to release the IP address obtained by a client, you need the following data.

  • Page 33: Checking The Configuration

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 2 DHCP Configuration If the IP address of the DHCP server is specified, Release messages are sent to only the – specified DHCP server. ----End 2.4.3 Checking the Configuration Prerequisite The configurations of requesting the DHCP server to release an IP address of a client are complete.

  • Page 34: Configuration Examples

    Quidway S9300 Terabit Routing Switch 2 DHCP Configuration Configuration Guide - IP Service Procedure Run the display dhcp relay { all | interface interface-type interface-number } command to check the DHCP server group and servers in the DHCP server group on the VLANIF interface.
  • Page 35 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 2 DHCP Configuration Configuration Roadmap The configuration roadmap is as follows: Create a DHCP server group and add DHCP servers to the DHCP server group. Enable DHCP relay on the VLANIF interface.

  • Page 36: Example For Configuring The Dhcp Relay In A Super Vlan

    Quidway S9300 Terabit Routing Switch 2 DHCP Configuration Configuration Guide - IP Service [Quidway] ip route-static 100.10.10.0 24 Step 5 Verify the configuration. Run the display dhcp relay command on the S9300. You can view the configuration of DHCP relay enabled on the interface.

  • Page 37: Figure 2-2 Networking Diagram For Configuring The Dhcp Relay In A Super Vlan

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 2 DHCP Configuration Figure 2-2 Networking diagram for configuring the DHCP relay in a super VLAN DHCP Server A 100.10.10.1/24 Internet DHCP Server B 100.10.10.2/24 DHCP Relay Super Vlan GE1/0/0...
  • Page 38 Quidway S9300 Terabit Routing Switch 2 DHCP Configuration Configuration Guide - IP Service [Quidway-dhcp-server-group-dhcpgroup1] dhcp-server 100.10.10.1 [Quidway-dhcp-server-group-dhcpgroup1] dhcp-server 100.10.10.2 [Quidway-dhcp-server-group-dhcpgroup1] quit Step 2 Configure the super VLAN. # Create VLAN 100 and configure VLAN 100 as the super VLAN. [Quidway] vlan 100...
  • Page 39 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 2 DHCP Configuration Configuration Files Configuration file of the S9300 sysname Quidway vlan batch 100 101 102 vlan 100 aggregate-vlan access-vlan 101 to 102 dhcp server group dhcpgroup1 dhcp-server 100.10.10.1 dhcp-server 100.10.10.2...

  • Page 41: Ip Performance Configuration

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration IP Performance Configuration About This Chapter This chapter describes the basic concepts of IP performance, and provides configuration procedures and examples of IP performance. 3.1 IP Performance Supported by the S9300 This section describes the IP Performance features supported by the S9300.

  • Page 42: Ip Performance Supported By The S9300

    Quidway S9300 Terabit Routing Switch 3 IP Performance Configuration Configuration Guide - IP Service 3.1 IP Performance Supported by the S9300 This section describes the IP Performance features supported by the S9300. The S9300 supports the following IP performance parameters that can be changed:...

  • Page 43: Enabling An Interface To Check The Source Ip Addresses Of Packets

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration Pre-configuration Tasks Before optimizing IP performance, complete the following tasks: Connecting interfaces and setting physical parameters of the interfaces to ensure that the physical layer of the interfaces is in the Up state...

  • Page 44: Configuring Forcible Fragmentation Of Outgoing Packets On An Interface

    Quidway S9300 Terabit Routing Switch 3 IP Performance Configuration Configuration Guide - IP Service The interface is enabled to check the source IP addresses. The S9300 only checks the source IP addresses of the packets sent from the interface to the CPU.
  • Page 45 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration CAUTION If the S9300 is disabled from sending ICMP redirection packets, the S9300 does not send ICMP redirection packets in any case. If the S9300 is disabled from sending ICMP host unreachable packets, the S9300 does not send ICMP host unreachable packets in any case.

  • Page 46: Setting Tcp Parameters

    Quidway S9300 Terabit Routing Switch 3 IP Performance Configuration Configuration Guide - IP Service Step 8 Run: icmp redirect send The interface is enabled to send ICMP redirection packets. Step 9 Run: icmp host-unreachable send The interface is enabled to send ICMP host unreachable packets.

  • Page 47: Setting The Load Balancing Mode Of Ip Packet Forwarding

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration 3.2.6 Setting the Load Balancing Mode of IP Packet Forwarding Context When flow-based load balancing mode is adopted, the S9300 performs the Hash algorithm based on the protocol type, source IP address and mask, destination IP address and mask, source port number, and destination port number, and then selects a route for forwarding packets according to the Hash value.

  • Page 48: Maintaining Ip Performance

    Quidway S9300 Terabit Routing Switch 3 IP Performance Configuration Configuration Guide - IP Service Run the display icmp statistics command to check the statistics on ICMP traffic. Run the display rawlink statistics command to check the Rawlink statistics. Run the display fib [ slot-id ] command to check the Forwarding Information Base (FIB) table on the Line Processing Unit (LPU).

  • Page 49: Monitoring The Running Status Of Ip Performance

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration Procedure Run the reset ip statistics [ interface interface-type interface-number ] command in the user view to clear the statistics on IP traffic. Run the reset ip socket monitor[ task-id task-id socket-id socket-id ] command in the user view to clear the information about the socket monitor.

  • Page 50: Debugging Ip Performance

    For the procedure for displaying the debugging information, see "Information Center" in the Quidway S9300 Terabit Routing SwitchConfiguration Guide - Device Management. For details on debugging commands, see the Quidway S9300 Terabit Routing Switch Debugging Reference.

  • Page 51: Configuration Examples

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration socket-id ] [ verbose verbose-number ] command in the user view to debug RAWLINK packets. ----End 3.4 Configuration Examples This section provides several configuration examples of IP performance.
  • Page 52 Quidway S9300 Terabit Routing Switch 3 IP Performance Configuration Configuration Guide - IP Service Disable the sending of ICMP redirection packets on an interface. Data Preparation To complete the configuration, you need the following data: Static routes to indirectly connected devices...
  • Page 53 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration [S9300-B-Vlanif10] quit Step 4 Verify the configuration. # Debug ICMP packets on S9300-B. <S9300-B> debugging ip icmp # Run the ping command on S9300-A. You can view that S9300-B does not send host redirection packets.

  • Page 54: Example For Configuring Icmp Host Unreachable Packets

    Quidway S9300 Terabit Routing Switch 3 IP Performance Configuration Configuration Guide - IP Service interface GigabitEthernet1/0/0 port hybrid tagged vlan 10 return 3.4.2 Example for Configuring ICMP Host Unreachable Packets Networking Requirements As shown in Figure 3-2, to limit the sending of ICMP redirection packets, S9300-A, S9300-B, and S9300-C are required and these devices are connected through their GE interfaces.
  • Page 55 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration Procedure Step 1 Configure S9300-A. # Assign an IP address to VLANIF 10. <Quidway> system-view [Quidway] sysname S9300-A [S9300-A] vlan 10 [S9300-A-Vlan10] quit [S9300-A] interface gigabitethernet 1/0/0...

  • Page 56: Example For Optimizing System Performance By Discarding Certain Icmp Packets

    Quidway S9300 Terabit Routing Switch 3 IP Performance Configuration Configuration Guide - IP Service # Run the ping 2.2.2.3 command on S9300-A. According to the received packet captured by the tester on S9300-A, S9300-B sends host unreachable packets. [S9300-A] ping 2.2.2.3...

  • Page 57: Figure 3-3 Networking For Configuring Icmp Security Function

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 3 IP Performance Configuration Networking Requirement As shown in Figure 3-3, the S9300 functions as the convergence device. The enterprise users, individual users, and DSLAMs are attached to the S9300. The S9300 is connected to the Internet through a BRAS.
  • Page 58 Quidway S9300 Terabit Routing Switch 3 IP Performance Configuration Configuration Guide - IP Service Procedure Step 1 Configure the S9300 to discard certain ICMP packets. # Configure the S9300 to discard the ICMP packets whose TTL values are 1. <Quidway> system-view [Quidway] icmp ttl-exceeded drop all # Configure the S9300 to discard the ICMP packets that carry options.

  • Page 59: Ip Unicast Pbr Configuration

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 4 IP Unicast PBR Configuration IP Unicast PBR Configuration About This Chapter This chapter describes the principle of IP unicast policy-based routing (PBR), and provides configuration procedures and examples of IP unicast PBR.

  • Page 60: Introduction To Ip Unicast Pbr

    Quidway S9300 Terabit Routing Switch 4 IP Unicast PBR Configuration Configuration Guide - IP Service 4.1 Introduction to IP Unicast PBR This section describes the basic concepts of IP Unicast PBR. PBR is a routing mechanism based on user-defined policies. Compared with the routing based on the destination address of data packets, PBR is more flexible.

  • Page 61: Defining Matching Rules For Pbr

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 4 IP Unicast PBR Configuration Configuring the interface connecting the S9300 and another device Configuring the link layer protocol on an interface Configuring an ACL to match packets Configuring a virtual private network (VPN) if the packets need to be sent to the VPN Data Preparation To configure IP unicast PBR, you need the following data.

  • Page 62: Defining Actions Of Pbr

    Quidway S9300 Terabit Routing Switch 4 IP Unicast PBR Configuration Configuration Guide - IP Service Procedure Step 1 Run: system-view The system view is displayed. Step 2 Run: policy-based-route policy-name { deny | permit } node node-id A policy or a node is created.

  • Page 63: Applying A Policy-Based Route

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 4 IP Unicast PBR Configuration Table 4-1 Relations between values and keywords Value Keyword Routine Priority Immediate Flash Flash-override Critical Internet Network Step 4 (Optional) Run: apply ip-address default next-hop ip-address1 [ ip-address2 ] The default next hop of packets is set.

  • Page 64: Checking The Configuration

    Quidway S9300 Terabit Routing Switch 4 IP Unicast PBR Configuration Configuration Guide - IP Service The policy-based route is applied on the local S9300. A policy-based route takes effect for only the packets generated by the local S9300. You can configure only one local policy-based route. If you configure multiple local policy- based routes, the latest configuration overrides the previous configuration.

  • Page 65: Debugging Ip Unicast Pbr

    When an IP unicast PBR fault occurs, you can run the debugging command in the user view to locate the fault. For the procedure for displaying the debugging information, see "Information Center" in the Quidway S9300 Terabit Routing SwitchConfiguration Guide - Device Management. For details on debugging commands, see the Quidway S9300 Terabit Routing Switch Debugging Reference.

  • Page 66: Figure 4-1 Networking Diagram For Configuring Pbr Based On The Protocol Type

    Quidway S9300 Terabit Routing Switch 4 IP Unicast PBR Configuration Configuration Guide - IP Service Figure 4-1 Networking diagram for configuring PBR based on the protocol type S9300 B GE1/0/0 GE1/0/0 VLANIF11 VLANIF11 1.1.2.1/24 1.1.2.2/24 Internet GE2/0/0 GE2/0/0 VLANIF12 VLANIF12 1.1.3.1/24...
  • Page 67 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 4 IP Unicast PBR Configuration [S9300A] acl number 3002 [S9300A-acl-adv-3002] rule permit ip [S9300A-acl-adv-3002] quit # Define node 5 so that TCP packets are sent to the next hop 1.1.2.2.
  • Page 68 Quidway S9300 Terabit Routing Switch 4 IP Unicast PBR Configuration Configuration Guide - IP Service # Establish a Telnet connection with S9300C (1.1.3.2/24) on S9300A, and the connection fails. <S9300A> telnet 1.1.3.2 Trying 1.1.3.2 ... Press CTRL+K to abort Error: Failed to connect to the remote host.

  • Page 69: Example For Configuring Pbr Based On The Packet Length

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 4 IP Unicast PBR Configuration port hybrid tagged vlan 12 return 4.5.2 Example for Configuring PBR Based on the Packet Length Networking Requirements As shown in Figure 4-2, PBR is used on S9300A.
  • Page 70 Quidway S9300 Terabit Routing Switch 4 IP Unicast PBR Configuration Configuration Guide - IP Service # Assign an IP address to each interface. <Quidway> system-view [Quidway] sysname S9300A [S9300A] vlan batch 10 to 11 [S9300A] interface vlanif 10 [S9300A-Vlanif10] ip address 150.1.1.1 255.255.255.0...
  • Page 71 Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 4 IP Unicast PBR Configuration # Ping Loopback 0 of S9300B from S9300A and set the data length of packets to 80 bytes. C:\> ping -l 80 10.1.1.1 Pinging 10.1.1.1 with 80 bytes of data: Reply from 10.1.1.1: bytes=80 time<6ms TTL=255...
  • Page 72 Quidway S9300 Terabit Routing Switch 4 IP Unicast PBR Configuration Configuration Guide - IP Service vlan batch 10 to 11 interface Vlanif10 ip address 150.1.1.1 255.255.255.0 interface Vlanif11 ip address 151.1.1.1 255.255.255.0 interface GigabitEthernet1/0/1 port hybrid tagged vlan 10 interface GigabitEthernet1/0/2...

  • Page 73: Udp Helper Configuration

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 5 UDP Helper Configuration UDP Helper Configuration About This Chapter This chapter describes the principle of UDP helper, and provides configuration procedures and examples of UDP helper. 5.1 Introduction to UDP Helper This section describes the principle of UDP helper.

  • Page 74: Introduction To Udp Helper

    Quidway S9300 Terabit Routing Switch 5 UDP Helper Configuration Configuration Guide - IP Service 5.1 Introduction to UDP Helper This section describes the principle of UDP helper. The S9300 on a network needs to obtain network configurations or query the name of another device by sending broadcast packets.

  • Page 75: Configuring Udp Helper

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 5 UDP Helper Configuration The UDP helper function cannot be used to send DHCP messages, that is, the number of the UDP port cannot be 67 or 68. To forward Dynamic Host Configuration Protocol (DHCP)

  • Page 76: Enabling The Udp Helper Function

    Quidway S9300 Terabit Routing Switch 5 UDP Helper Configuration Configuration Guide - IP Service 5.3.2 Enabling the UDP Helper Function Context After the UDP Helper function is enabled, the S9300 checks the destination UDP port of the received packet and determines whether to relay the packet. Then the S9300 performs the...

  • Page 77: Configuring The Destination Server For Packet Relay

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 5 UDP Helper Configuration Step 2 Run: udp-helper port { port-number | dns | netbios-ds | netbios-ns | tacacs | tftp | time } The UDP port on which packets need to be forwarded are configured.

  • Page 78: Maintaining Udp Helper

    Quidway S9300 Terabit Routing Switch 5 UDP Helper Configuration Configuration Guide - IP Service <Quidway> display udp-helper server interface Vlanif 100 vlan-interface Server-Ip packet-num Vlanif100 10.10.10.10 5.4 Maintaining UDP Helper This section describes how to maintain UDP helper. 5.4.1 Clearing UDP Helper Statistics 5.4.2 Monitoring the Running Status of UDP Helper...

  • Page 79: Example For Configuring Udp Helper

    Quidway S9300 Terabit Routing Switch Configuration Guide - IP Service 5 UDP Helper Configuration 5.5.1 Example for Configuring UDP Helper Networking Requirements As shown in Figure 5-1, the IP address of VLANIF 100 on the S9300 is 10.110.1.1/16; the IP address of the NetBIOS-NS name server is 10.2.1.1/16.
  • Page 80 Quidway S9300 Terabit Routing Switch 5 UDP Helper Configuration Configuration Guide - IP Service VLANIF interface of the destination server to which packets of UDP ports are forwarded IP address of the destination server Procedure Step 1 Enable the UDP helper function.

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