04-23-2013 04:36 AM
Hi,
On 7600 I have a set of service instances. For example:
------------------------
service instance 7583 ethernet
encapsulation dot1q 2007 second-dot1q 420
rewrite ingress tag pop 2 symmetric
bridge-domain 11
!
service instance 420 ethernet
encapsulation dot1q 2004 second-dot1q 420
rewrite ingress tag pop 2 symmetric
bridge-domain 11 split-horizon
!
service instance 7694 ethernet
encapsulation dot1q 2002 second-dot1q 420
rewrite ingress tag pop 2 symmetric
bridge-domain 11 split-horizon
!
int vlan 11
ip vrf forw Test
ip address 1.1.1.1 255.255.255.128
-------------------------
To convert this to IOS-XR - how should I specify split horizon?
Like this?
--------------------------
interface Ten0/1/0/0.7583 l2transport
encapsulation dot1q 2007 second-dot1q 420
rewrite ingress tag pop 2 symmetric
!
interface Ten0/1/0/0.420 l2transport
encapsulation dot1q 2004 second-dot1q 420
rewrite ingress tag pop 2 symmetric
!
interface Ten0/1/0/0.7694 l2transport
encapsulation dot1q 2002 second-dot1q 420
rewrite ingress tag pop 2 symmetric
!
!
interface BVI11
description Test
vrf Test
ipv4 address 1.1.1.1/25
!
l2vpn
bridge group BG-TEST
bridge-domain BD-TEST-11
interface Ten0/1/0/0.7583
interface Ten0/1/0/0.420
interface Ten0/1/0/0.7694
-------------------------------
Or like this:
-------------------------------
<config omitted>
l2vpn
bridge group BG-TEST
bridge-domain BD-TEST-11
interface Ten0/1/0/0.7583
split-horizon group
interface Ten0/1/0/0.420
split-horizon group
interface Ten0/1/0/0.7694
split-horizon group
-------------------------------
In short: Do I need to specify "split-horizon group"?
/Jorgen
04-23-2013 08:43 AM
Jorgen,
your second example is how to go about it.
in your l2vpn configuration and then underneath the bridge-domain section you define your EFPs (l2transport interfaces) and you can take them out of the default split horizon group.
Three SHG groups are defined for VPLS(SHG0,SHG1 and SHG2). By default, all the
bridge-ports( AC or PW ) come in SHG0. When a Split horizon-group is configured
under the Bridge-port( either under AC or PW) they come in SHG2.
PWs defined under VFI come in SHG1.
By definition, Bridge-ports in same SHG(SHG1 and SHG2) won't talk to each
other ( this is not applicable for SHG0 though ). SHG0 --- > SHG0,SHG1 and SHG2 SHG1 --- > SHG0 and SHG2 SHG2 ----> SHG0 and SHG1
xander
01-23-2018 10:31 PM
when you have ACs under different SHG (other than 0), don't we expect any traffic (UC/BC/MC) to be forwarded ?
Also, is there any configuration where only BC/MC allowed to forward, but no UC traffic ?
Please clarify
01-24-2018 06:13 AM
BUM traffic (broadcast, unknown unicast, multicast) received from one member of the SHG is never flooded to other members of the same SHG. The behaviour is the same for all three traffic types.
04-23-2013 08:52 AM
Great. Thanks for fast response!
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