Cisco APIC Layer 3 Networking Configuration Guide, Release 6.2(x)

PDF

Cisco APIC Layer 3 Networking Configuration Guide, Release 6.2(x)

Configure route control policy in VRF using the GUI

Want to summarize with AI?

Log in

Configure route summarization for a VRF including route summarization policy, intra-VRF import route control, and VRF export route control.


Configuring route control policies in VRF enables route summarization of routes into the ACI fabric and towards external BGP L3Out peers. With route summarization configured, more-specific prefixes may or may not be advertised along with the aggregate prefix, based on the control state option enabled.

This task explains the steps to configure route summarization for a VRF. This includes steps to configure a route summarization policy, intra-VRF import route control, and VRF export route control.

Procedure

  1. Navigate to Tenants > tenant_name > Networking > VRFs > vrf_name.

  2. On the VRF - vrf_name work pane, click the Route Control tab.

  3. Determine how you want to configure route filtering and aggregation at the VRF level.

    • To configure a BGP route summarization policy, go to 4.

    • To configure an inter-VRF import route control policy, go to 5.

    • To configure a VRF export route control policy, go to 6.

  4. Configure the Route Summarization Policy using the GUI as follows:

    1. Click + next to the Route Summarization Policy.
      The Create Route Summarization Policy dialog box appears.
    2. Enter a name in the Name field and select switches from the Nodes list.
    3. Click + next to Subnets.
      The Create Association of Subnet to Summarization Policy dialog box appears.
    4. Enter an IP address in the Subnet field.
    5. Select a policy from the BGP Route Summary Policy list.
      The Create BGP Route Summarization Policy dialog box appears.
    6. Enter a name in the Name filed and select the appropriate Control State and Address Type Controls options.

      If the Do not advertise more specifics control state option in the BGP route summarization policy configuration is enabled, aggregate prefix would be advertised and more-specific prefixes would not be advertised to peers. If the Do not advertise more specifics option is not enabled, both the aggregate and the more-specific prefixes would be advertised to the peers.

    7. Click Submit and confirm the previous configurations.
    Note

    If the aggregate prefix is learned from L3Out peers and from the locally originated aggregate prefix at the border leafs using the route summarization policy configuration, to prefer the externally learned aggregate prefix as the BGP best path over the locally originated aggregate prefix, the incoming weight of all routes originating from the L3Out peers must be set to 32769 or greater.

  5. Configure the Intra-VRF Import Route Configuration Policy using the GUI as follows:

    1. Click + next to the Intra-VRF Import Route Configuration Policy.
      The Create VRF Import Route Control Policy dialog box appears.
    2. Enter a name in the Name field and select switches from the Nodes list.
    3. Select a policy from the Route Profile for Import list.
    4. Click Submit.
  6. Configure the VRF Export Route Configuration Policy using the GUI as follows:

    1. Click + next to the VRF Export Route Configuration Policy.
      The Create VRF Export Route Control Policy dialog box appears.
    2. Enter a name in the Name field and select switches from the Nodes list.
    3. Select a policy from the Route Profile for Export list.
    4. Click Submit.

The route control policy is configured in the VRF with the appropriate route summarization, import, and export policies based on your selection.