Thursday, April 16, 2015

Configure Layer2 trunk across XR Bundle interfaces with BVI

This document contains step by step on how to configure Layer2 trunk across Cisco XR interfaces with BVI as the sample from ASR9001.

Example: Trunk ASR to the other switch

1. Create Bundle-Interface with id 1 and 2 on ASR. BE1 is 2 x 10G interfaces, BE2 is 2 x 1G interfaces.

!
interface TenGigE0/0/2/2
 description connection to ASR port Te0/0/2/2
 bundle id 1 mode active
 cdp
!
interface TenGigE0/0/2/3
 description connection to ASR port Te0/0/2/3
 bundle id 1 mode active
 cdp
!
interface GigabitEthernet0/0/0/0
 description BE2-link1
 bundle id 2 mode active
 negotiation auto
!
interface GigabitEthernet0/0/0/1
 description BE2-link2
 bundle id 2 mode active
 negotiation auto
!

2. Tag VLAN315 to Bundle-Interface1 and Bundle-Interface2

!
interface Bundle-Ether1.315 l2transport
 description Trunk-vlan315
 encapsulation dot1q 315
 rewrite ingress tag pop 1 symmetric
!
interface Bundle-Ether2.315 l2transport
 description Trunk-vlan315
 encapsulation dot1q 315
 rewrite ingress tag pop 1 symmetric
!

3. Create BVI315. The BVI interface is used to accommodate like the interface VLAN in Cisco IOS.

!
interface BVI315
 description Wireless-Interconnect
 ipv4 address 10.16.1.1 255.255.255.0
!

4. Create l2-VPN BD to bridge the Ethernet Flow Point (EFP) and BVI together.

!
l2vpn
 bridge group VLAN315
  bridge-domain VLAN315
   interface Bundle-Ether1.315
   !
   interface Bundle-Ether2.315
   !
   routed interface BVI315
  !
 !


Reference:
L2 Switching Configuration to XR L2VPN Configuration Conversion Process