Split-Horizon Group - Cisco ASR 9000 Series Reference Manual

Multipoint Layer 2 Services Commands

split-horizon group

To add an AC to a split horizon group, use the split-horizon group command in L2VPN bridge group bridge
domain attachment circuit configuration mode. To remove the AC from the group, use the no form of this
command.

split-horizon group

no split-horizon group
Syntax Description
This command has no keywords or arguments.
Command Default
None
Command Modes
L2VPN bridge group bridge domain attachment circuit configuration mode
Command History
Release
Release 3.7.2
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
Only one split horizon group exists for ACs per bridge domain. By default, the group does not have any ACs.
You can configure individual ACs to become members of the group using the split-horizon group configuration
command.
You can configure an entire physical interface or EFPs within an interface to become members of the split
horizon group.
Task ID
Task ID
l2vpn
Examples The following example adds an EFP under a GigabitEthernet interface to the AC split horizon group:
RP/0/RSP0/CPU0:router# configure
RP/0/RSP0/CPU0:router(config)# l2vpn
RP/0/RSP0/CPU0:router(config-l2vpn)# bridge group metroA
RP/0/RSP0/CPU0:router(config-l2vpn-bg)# bridge-domain east
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd)# interface GigabitEthernet0/1/0/6.15
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd-ac)# split-horizon group
RP/0/RSP0/CPU0:router(config-l2vpn-bg-bd-ac)# commit
Cisco ASR 9000 Series Aggregation Services Router VPN and Ethernet Services Command Reference, Release
Modification
This command was introduced.
Operations
Read, write
split-horizon group
6.1.x
367