[c-nsp] config example xconnent between ASR9K and 6500

David Wilkinson cisco-nsp at noroutetohost.net
Wed Sep 20 12:05:24 EDT 2017


On 20/09/17 11:19, James Bensley wrote:
> To make a point to point pseudowire from an ASR9K to a 6500 using
> sub-interface you need config as follows;
>
> IOS-XR:
> l2vpn
>   xconnect group test-VC117
>    p2p XR-to-IOS-vc117
>     interface TenGigE0/0/0/3.3406
>     neighbor ipv4 10.0.0.10 pw-id 117
>
>
> interface TenGigE0/0/0/3.3406 l2transport
>   description PERF-Link-Test:VC117
>   encapsulation dot1q 3406
>   rewrite ingress tag pop 1 symmetric
>   mtu 1518
>
>
> IOS:
> interface GigabitEthernet2/8/30.3406
>   description PERF-Link-Test:VC117
>   encapsulation dot1Q 3406
>   xconnect 10.0.0.11 117 encapsulation mpls
>
> This should work on a 6509-E type chasses with DFC4s et al. (SUP2T
> etc). On older SUP720 I'm not sure. For some older Cisco devices like
> 7200s they would negotiate to VC Type 4 by default and ASR9Ks use VC
> type 5 by default. So in this case of a tagged sub-interfface you can
> force either device to use VC-Type 4 or 5 to match the other using a
> pseudowire-class and munge the MTU manually on the interfaces to match
> within LDP.
>
> If you have this working on a 6500 with SUP720, what is the config you
> have used please?
>
> Also what is the output from the following commands when you set up a
> p2p pseudowire, not using a bridge domain:
>
> 6500: show mpls l2transport binding xxx
> 6500: show mpls l2transport vc xxx detail
> 9K: show l2vpn xconnect pw-id xxx detail
>
That should work on a SUP720, although I have only done a SUP720 
subinterface in to a bridge domain on the ASR end.
The ones which I have to an xconnect on the ASR end are to the whole 
interface on the 6500 end.

IOS-XR:
l2vpn
  bridge group test-VC117
   bridge-domain XR-to-IOS-vc117
    interface BVI3406
    neighbor 10.0.0.10 pw-id 117



IOS:
interface GigabitEthernet2/8/30.3406
  description PERF-Link-Test:VC117
  encapsulation dot1Q 3406
  xconnect 10.0.0.11 117 encapsulation mpls





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