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Configuration Guide - VPN

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of VPN, including GRE, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, and VPLS.
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(Optional) Configuring Routing Policies to Control VPN Route Advertisement and Acceptance

(Optional) Configuring Routing Policies to Control VPN Route Advertisement and Acceptance

Context

The ASBRs accept all VPNv6 routes after they are configured not to filter VPNv6 routes by VPN targets. When there are many VPN routes on the network, the ASBRs are overburdened.

If only some VPNs or sites need to communicate across ASs, you can configure a routing policy on the ASBRs to restrict the VPNv6 routes that can be accepted by the ASBRs. This reduces the load on the ASBRs.

This section describes how to configure the following filtering policies to control VPNv6 route advertisement and acceptance:
  • Filtering policy based VPN targets
  • Filtering policy based on RDs

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run either of the following commands to configure a route filter.

    • Perform either of the following operations as required to configure an extended community filter.
      • To configure a basic extended community filter, run the ip extcommunity-filter { basic-extcomm-filter-num | basic basic-extcomm-filter-name } [ index index-number ] { deny | permit } { rt { as-number:nn | 4as-number:nn | ipv4-address:nn } } &<1-16> command.

      • To configure an advanced extended community filter, run the ip extcommunity-filter { advanced-extcomm-filter-num | advanced advanced-extcomm-filter-name } [ index index-number ] { deny | permit } regular-expression command.

    • Run the ip rd-filter rd-filter-number { deny | permit } route-distinguisher &<1-10> command to configure an RD filter.

  3. Run route-policy route-policy-name permit node node

    A routing policy is configured.

  4. Run either of the following commands to configure an if-match clause in the configured route filter:
    1. If you configured an extended community filter in 2, run the if-match extcommunity-filter { { basic-extcomm-filter-num | advanced-extcomm-filter-num } &<1-16> | advanced-extcomm-filter-name | basic-extcomm-filter-name } command to configure an if-match clause based on the extended community filter in the routing policy.
    2. If you configured an RD filter in 2, run the if-match rd-filter rd-filter-number command to configure an if-match clause based on the RD filter in the routing policy.
  5. Run quit

    Return to the system view.

  6. Run bgp { as-number-plain | as-number-dot }

    The BGP view is displayed.

  7. Run ipv6-family vpnv6 [ unicast ]

    The BGP-VPNv6 address family is displayed.

  8. Run peer ipv4-address route-policy route-policy-name { export | import }

    The routing policy is applied to control the VPN IPv6 routing information.

  9. Run commit

    The configuration is committed.

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Updated: 2019-04-03

Document ID: EDOC1100075353

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