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Attach multiple ACs to L3 interface on IOS-XR

Hi,

Is it possible, and how, to attach multiple ACs to L3 interface on IOS-XR ASR900.

Something like this configuration on ES20

interface Gi1/1
service instance 10 ethernet
  encapsulation dot1q 10
  rewrite ingress tag pop 1 symmetric
  bridge-domain 40

interface Gi1/2
service instance 10 ethernet
  encapsulation dot1q 20 second-dot1q 30
  rewrite ingress tag pop 2 symmetric
  bridge-domain 40

interface Vlan 40
  ip address 1.1.1.1 255.255.255.0

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Attach multiple ACs to L3 interface on IOS-XR

Yes you can!

Taken an XR version > 4.0.1

and configure something like the following

int g0/0/0/0.1 l2trans

ecap dot1q 10

rewrite ingress tag pop 1 sym

int g0/0/0/0.2 l2trans

ecap dot1q 20

rewrite ingress tag pop 1 sym

l2vpn

bridge-domain X

bridge-group X

int g0/0/0/0.1

int g0/0/0/0.2

routed interface BVI 100

int bvi 100

ipv4 add......

Note that the BVI is untagged, meaning you need to pop all the tags in your BD for your EFP's in order to have the EFP talking to the BVI.

I have more info on that topic on my technote here:

https://supportforums.cisco.com/docs/DOC-15556

xander

sr Tech Lead ASR9000

CCIE

Xander Thuijs CCIE #6775 Principal Engineer ASR9000, CRS, NCS6000 & IOS-XR
1 REPLY
Cisco Employee

Attach multiple ACs to L3 interface on IOS-XR

Yes you can!

Taken an XR version > 4.0.1

and configure something like the following

int g0/0/0/0.1 l2trans

ecap dot1q 10

rewrite ingress tag pop 1 sym

int g0/0/0/0.2 l2trans

ecap dot1q 20

rewrite ingress tag pop 1 sym

l2vpn

bridge-domain X

bridge-group X

int g0/0/0/0.1

int g0/0/0/0.2

routed interface BVI 100

int bvi 100

ipv4 add......

Note that the BVI is untagged, meaning you need to pop all the tags in your BD for your EFP's in order to have the EFP talking to the BVI.

I have more info on that topic on my technote here:

https://supportforums.cisco.com/docs/DOC-15556

xander

sr Tech Lead ASR9000

CCIE

Xander Thuijs CCIE #6775 Principal Engineer ASR9000, CRS, NCS6000 & IOS-XR
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