Cisco ASR 9000 Series

RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd-pw)#split-horizon group
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd-pw)#exit
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd)#vfi abc
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd-vfi)#neighbor 192.168.99.17 pw-id 1
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd-vfi-pw)#exit
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd-vfi)#exit
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd)#
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd)#
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd)#show
Mon Oct 18 13:51:05.831 EDT
l2vpn
bridge group examples
bridge-domain all_three
interface GigabitEthernet0/0/0/0.99
!
interface GigabitEthernet0/0/0/0.101
split-horizon group
!
neighbor 192.168.99.1 pw-id 1
!
neighbor 192.168.99.9 pw-id 1
split-horizon group
!
vfi abc
neighbor 192.168.99.17 pw-id 1
!
!
!
!
!
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd)#
According to this example, the Split Horizon group assignments for bridge domain all_three are:
Split Horizon GroupBridge Port/Pseudowire
0bridge port: gig0/0/0/0.99
2bridge port: gig0/0/0/0.101
0PW: 192.168.99.1 pw-id 1
2PW: 192.168.99.9 pw-id 1
1PW: 192.168.99.17 pw-id 1
Blocking Unknown Unicast Flooding: Example
Unknown-unicast flooding can be blocked at these levels:
• bridge domain
• bridge port (attachment circuit (AC))
• access pseudowire (PW)
This example shows how to block unknown-unicast flooding at the bridge domain level:
configure
l2vpn
bridge-group group1
L2VPN and Ethernet Services Configuration Guide for Cisco ASR 9000 Series Routers, IOS XR Release 6.3.x
325
Implementing Multipoint Layer 2 Services
Blocking Unknown Unicast Flooding: Example