No relevant resource is found in the selected language.
Enterprise
Worldwide
Search
Support Documentation
AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V300R003 CLI-based Configuration Guide - MPLS

This document describes MPLS features on the device and provides configuration procedures and configuration examples.

Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Example for configuring automatic triggering of a request for a Label Mapping message in DoD mode

Example for configuring automatic triggering of a request for a Label Mapping message in DoD mode

Networking Requirements

As shown in Figure 3-23, LSRA and LSRD function as PEs. Before establishing a PW, set up a remote LDP session between LSRA and LSRD to establish a public network tunnel. To save network resources, unnecessary IP addresses and MPLS entries need to be reduced.

Figure 3-23  Example for configuring automatic triggering of a request for a Label Mapping message in DoD mode

Configuration Roadmap

To meet the preceding requirements, configure automatic triggering of a request for a Label Mapping message in DoD mode. The configuration roadmap is as follows:

  1. Configure the label advertisement mode as DoD to reduce Label Mapping messages. Configure the DoD mode on interfaces of each LSR.

  2. Configure LDP extension for inter-area LSP so that LDP searches for a route according to the longest match rule to establish an LDP LSP. Perform this configuration on LSRA and LSRD.

  3. Configure LDP to automatically trigger a request for a Label Mapping message in DoD mode. Perform this configuration on LSRA and LSRD.

Procedure

  1. Configure IP addresses for interfaces.

    # Configure LSRA. The configurations of LSRB, LSRC, and LSRD are similar to the configuration of LSRA, and are not mentioned here.

    <Huawei> system-view
[Huawei] sysname LSRA
[LSRA] interface loopback 0
[LSRA-LoopBack0] ip address 10.10.1.1 32
[LSRA-LoopBack0] quit
[LSRA] interface gigabitethernet 1/0/0
[LSRA-GigabitEthernet1/0/0] ip address 10.1.1.1 24
[LSRA-GigabitEthernet1/0/0] quit

  2. Configure basic IS-IS functions for backbone devices. Configure static routes for PEs and their neighbors.

    # Configure basic IS-IS functions for LSRB and import a static route.

    [LSRB] isis 1
[LSRB-isis-1] network-entity 10.0000.0000.0001.00
[LSRB-isis-1] import-route static
[LSRB-isis-1] quit
[LSRB] interface gigabitethernet 2/0/0
[LSRB-GigabitEthernet2/0/0] isis enable 1
[LSRB-GigabitEthernet2/0/0] quit
[LSRB] interface loopback 0
[LSRB-LoopBack0] isis enable 1
[LSRB-LoopBack0] quit

    # Configure basic IS-IS functions for LSRC and import a static route.

    [LSRC] isis 1
[LSRC-isis-1] network-entity 10.0000.0000.0002.00
[LSRC-isis-1] import-route static
[LSRC-isis-1] quit
[LSRC] interface gigabitethernet 1/0/0
[LSRC-GigabitEthernet1/0/0] isis enable 1
[LSRC-GigabitEthernet1/0/0] quit
[LSRC] interface loopback 0
[LSRC-LoopBack0] isis enable 1
[LSRC-LoopBack0] quit

    # Configure a default route whose next hop IP address is 10.1.1.2 on LSRA.

    [LSRA] ip route-static 0.0.0.0 0.0.0.0 10.1.1.2

    # On LSRB, configure a static route to LSRA.

    [LSRB] ip route-static 10.10.1.1 255.255.255.255 10.1.1.1

    # On LSRC, configure a static route to LSRD.

    [LSRC] ip route-static 10.10.1.4 255.255.255.255 10.1.3.2

    # Configure a default route whose next hop IP address is 10.1.3.1 on LSRD.

    [LSRD] ip route-static 0.0.0.0 0.0.0.0 10.1.3.1

    # Run the display ip routing-table command on LSR to view the configure default route.

  3. Enable MPLS globally and on an interface, and MPLS LDP on each node.

    # Configure LSRA. The configurations of LSRB, LSRC, and LSRD are similar to the configuration of LSRA, and are not mentioned here.

    [LSRA] mpls lsr-id 10.10.1.1
[LSRA] mpls
[LSRA-mpls] quit
[LSRA] mpls ldp
[LSRA-mpls-ldp] quit
[LSRA] interface gigabitethernet 1/0/0
[LSRA-GigabitEthernet1/0/0] mpls
[LSRA-GigabitEthernet1/0/0] mpls ldp
[LSRA-GigabitEthernet1/0/0] quit

  4. Configure the label advertisement mode as DoD.

    # Configure LSRA.

    [LSRA] interface gigabitethernet 1/0/0
[LSRA-GigabitEthernet1/0/0] mpls ldp advertisement dod
[LSRA-GigabitEthernet1/0/0] quit

    # Configure LSRB.

    [LSRB] interface gigabitethernet 1/0/0
[LSRB-GigabitEthernet1/0/0] mpls ldp advertisement dod
[LSRB-GigabitEthernet1/0/0] quit

    # Configure LSRC.

    [LSRC] interface gigabitethernet 2/0/0
[LSRC-GigabitEthernet2/0/0] mpls ldp advertisement dod
[LSRC-GigabitEthernet2/0/0] quit

    # Configure LSRD.

    [LSRD] interface gigabitethernet 2/0/0
[LSRD-GigabitEthernet2/0/0] mpls ldp advertisement dod
[LSRD-GigabitEthernet2/0/0] quit

  5. Configure LDP extension for inter-area LSP.

    # Run the longest-match command on LSRA to configure LDP to search for a route according to the longest match rule to establish an inter-area LDP LSP.

    [LSRA] mpls ldp
[LSRA-mpls-ldp] longest-match
[LSRA-mpls-ldp] quit

    # Run the longest-match command on LSRD to configure LDP to search for a route according to the longest match rule to establish an inter-area LDP LSP.

    [LSRD] mpls ldp
[LSRD-mpls-ldp] longest-match
[LSRD-mpls-ldp] quit

  6. Configure a remote LDP session and enable LDP to automatically trigger a request for a Label Mapping message in DoD mode.

    # Configure LSRA.

    [LSRA] mpls ldp remote-peer lsrd
[LSRA-mpls-ldp-remote-lsrd] remote-ip 10.10.1.4
[LSRA-mpls-ldp-remote-lsrd] remote-ip auto-dod-request
[LSRA-mpls-ldp-remote-lsrd] quit

    # Configure LSRD.

    [LSRD] mpls ldp remote-peer lsra
[LSRD-mpls-ldp-remote-lsra] remote-ip 10.10.1.1
[LSRD-mpls-ldp-remote-lsra] remote-ip auto-dod-request
[LSRD-mpls-ldp-remote-lsra] quit

  7. Verify the configuration.

    # When the configurations are complete, run the display ip routing-table 10.10.1.4 command on LSRA to view route information.

    [LSRA] display ip routing-table 10.10.1.4
Route Flags: R - relay, D - download to fib, T -
to vpn-instance
------------------------------------------------------------------------------
Routing Table : Public
Summary Count : 1
Destination/Mask    Proto  Pre  Cost       Flags NextHop         Interface

        0.0.0.0/0   Static 60   0           RD   10.1.1.2        GigabitEthernet1/0/0

    The command output shows that only a default route exists in the routing table and the route 10.10.1.4 does not exist.

    # Run the display mpls ldp lsp command on LSRA to view information about the established LSP.

    [LSRA] display mpls ldp lsp

 LDP LSP Information
 -------------------------------------------------------------------------------
 DestAddress/Mask   In/OutLabel    UpstreamPeer    NextHop         OutInterface
 -------------------------------------------------------------------------------
 10.10.1.1/32       3/NULL         10.10.1.4       127.0.0.1       InLoop0   
 10.10.1.4/32       NULL/1026      -               10.1.1.2        GE1/0/0
 -------------------------------------------------------------------------------
 TOTAL: 1 Normal LSP(s) Found.
 TOTAL: 0 Liberal LSP(s) Found.
 TOTAL: 0 Frr LSP(s) Found.
 A '*' before an LSP means the LSP is not established
 A '*' before a Label means the USCB or DSCB is stale
 A '*' before a UpstreamPeer means the session is stale
 A '*' before a DS means the session is stale
 A '*' before a NextHop means the LSP is FRR LSP

    The command output shows that the LSP with the destination address of 10.10.1.4 is established. LSRA has obtained a Label Mapping message of 10.10.1.4 from LSRB to establish an LSP.

    [LSRA] display tunnel-info all
 * -> Allocated VC Token
Tunnel ID           Type                 Destination           Token
----------------------------------------------------------------------
0x10000001          lsp                   10.10.1.4              0

    The command output shows that an LSP between LSRA and LSRD is established.

Configuration Files

  • LSRA configuration file

    #
 sysname LSRA
#
mpls lsr-id 10.10.1.1
mpls
#
mpls ldp
 longest-match
#
 mpls ldp remote-peer lsrd
 remote-ip 10.10.1.4
 remote-ip auto-dod-request
#
interface GigabitEthernet1/0/0
 ip address 10.1.1.1 255.255.255.0
 mpls
 mpls ldp
 mpls ldp advertisement dod
#
interface LoopBack0
 ip address 10.10.1.1 255.255.255.255
#
 ip route-static 0.0.0.0 0.0.0.0 10.1.1.2
#
return

  • LSRB configuration file

    #
 sysname LSRB
#
mpls lsr-id 10.10.1.2
mpls
#
mpls ldp
#
isis 1
 network-entity 10.0000.0000.0001.00
 import-route static
#
interface GigabitEthernet1/0/0
 ip address 10.1.1.2 255.255.255.0
 mpls
 mpls ldp
 mpls ldp advertisement dod
#
interface GigabitEthernet2/0/0
 ip address 10.1.2.1 255.255.255.0
 isis enable 1
 mpls
 mpls ldp
#
interface LoopBack0
 ip address 10.10.1.2 255.255.255.255
 isis enable 1
#
 ip route-static 10.10.1.1 255.255.255.255 10.1.1.1
#
return

  • LSRC configuration file

    #
 sysname LSRC
#
mpls lsr-id 10.10.1.3
mpls
#
mpls ldp
#
isis 1
 network-entity 10.0000.0000.0002.00
 import-route static
#
interface GigabitEthernet1/0/0
 ip address 10.1.2.2 255.255.255.0
 isis enable 1
 mpls
 mpls ldp
#
interface GigabitEthernet2/0/0
 ip address 10.1.3.1 255.255.255.0
 mpls
 mpls ldp
 mpls ldp advertisement dod
#
interface LoopBack0
 ip address 10.10.1.3 255.255.255.255
 isis enable 1
#
 ip route-static 10.10.1.4 255.255.255.255 10.1.3.2
#
return

  • LSRD configuration file

    #
 sysname LSRD
#
mpls lsr-id 10.10.1.4
mpls
#
mpls ldp
 longest-match
#
 mpls ldp remote-peer lsra
 remote-ip 10.10.1.1
 remote-ip auto-dod-request
#
interface GigabitEthernet2/0/0
 ip address 10.1.3.2 255.255.255.0
 mpls
 mpls ldp
 mpls ldp advertisement dod
#
interface LoopBack0
 ip address 10.10.1.4 255.255.255.255
#
 ip route-static 0.0.0.0 0.0.0.0 10.1.3.1
#
return
Translation
简体中文
Download
Updated: 2022-12-12

Document ID: EDOC1100069335

Views: 103529

Downloads: 450

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Share
Previous Next

Copyright © 2023 Huawei Technologies Co., Ltd. All rights reserved.

You are going to visit :