- BGP Support for 4-byte ASN
- BGP Support for Dual AS Configuration for Network AS Migrations
- BGP Dynamic Neighbors
- BGP Graceful Restart per Neighbor
- BGP Support for Next-Hop Address Tracking
- BGP Support for the L2VPN Address Family
- BGP Event-Based VPN Import
- BGP VPLS Auto Discovery Support on Route Reflector
BGP VPLS Auto Discovery Support on Route Reflector
BGP Route Reflector was enhanced to be able to reflect BGP VPLS prefixes without having VPLS explicitly configured on the route reflector.
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Information About BGP VPLS Auto Discovery Support on Route Reflector
BGP VPLS Autodiscovery Support on Route Reflector
In Cisco IOS Release 12.2(33)SRE, BGP VPLS Autodiscovery Support on Route Reflector was introduced. On the Cisco 7600 and Cisco 7200 series routers, BGP Route Reflector was enhanced to be able to reflect BGP VPLS prefixes without having VPLS explicitly configured on the route reflector. The route reflector reflects the VPLS prefixes to other provider edge (PE) routers so that the PEs do not need to have a full mesh of BGP sessions. The network administrator configures only the BGP VPLS address family on the route reflector.
For an example of a route reflector configuration that can reflect VPLS prefixes, see the "Example: BGP VPLS Autodiscovery Support on Route Reflector" section. For more information about VPLS Autodiscovery, see the "VPLS Autodiscovery BGP Based" module in the MPLS Layer 2 VPNs Configuration Guide .
Configuration Example for BGP VPLS Auto Discovery Support on Route Reflector
Example: BGP VPLS Autodiscovery Support on Route Reflector
In the following example, a host named PE-RR (indicating Provider Edge Route Reflector) is configured as a route reflector capable of reflecting VPLS prefixes. The VPLS address family is configured by address-family l2vpn vpls command.
hostname PE-RR ! router bgp 1 bgp router-id 1.1.1.3 no bgp default route-target filter bgp log-neighbor-changes neighbor iBGP_PEERS peer-group neighbor iBGP_PEERS remote-as 1 neighbor iBGP_PEERS update-source Loopback1 neighbor 1.1.1.1 peer-group iBGP_PEERS neighbor 1.1.1.2 peer-group iBGP_PEERS ! address-family l2vpn vpls neighbor iBGP_PEERS send-community extended neighbor iBGP_PEERS route-reflector-client neighbor 1.1.1.1 peer-group iBGP_PEERS neighbor 1.1.1.2 peer-group iBGP_PEERS exit-address-family !
Additional References
Related Documents
| Related Topic | Document Title |
|---|---|
| Cisco IOS commands |
|
| BGP commands |
Standards and RFCs
| Standard/RFC | Title |
|---|---|
| RFC 2918 |
Route Refresh Capability for BGP-4 |
Technical Assistance
| Description | Link |
|---|---|
| The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password. |
Feature Information for BGP VPLS Auto Discovery Support on Route Reflector
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
| Table 1 | Feature Information for BGP VPLS Auto Discovery Support on Route Reflector |
| Feature Name | Releases | Feature Information |
|---|---|---|
| BGP VPLS Auto Discovery Support on Route Reflector |
12.2(33)SRE 15.1(1)SG Cisco IOS XE Release 2.5 Cisco IOS XE Release 3.3SG 15.2(4)S |
BGP Route Reflector was enhanced to be able to reflect BGP VPLS prefixes without having VPLS explicitly configured on the route reflector. This feature was introduced on the Cisco 7600 and Cisco 7200 series routers. This feature was introduced on the Cisco ASR 1000 Series Routers. |
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