[j-nsp] Best route reflector platform

[Mark Tinka]

On Monday, April 15, 2013 11:12:53 AM Nick Ryce wrote:

> Hi Mark,

Hello Nick.

> Re the control plane L2VPN interop issues.
> 
> I believe this is meant to have been fixed in 15.3(2)S. 
> Currently about to start testing it in the lab and will
> report back.
> 
> http://www.cisco.com/en/US/docs/switches/metro/me3600x_38
> 00x/software/relea
> se/15.3_2_S/configuration/guide/swmpls.html#wp128598

That's on the ME3600X/3800X. 

While IOS is not that different from IOS XE, I'm not sure 
whether they have feature parity (something Cisco have been 
working on, which is why the code is now numbered the same 
across many platforms now, i.e., 15.x). 

Would be good to find out whether they have this in IOS XE, 
as that is what the ASR1001 will run. I'm waiting for 
feedback from my SE and will report to the list if there is 
interest.

Having said all that, the main issue wasn't that Cisco never 
supported VPLS signaling in a BGP control plane. The issue 
was that the last time I tested this, there was a difference 
in the BGP Update message size for this SAFI where Juniper 
are sending 21 bytes based on 'draft-kompella-ppvpn-
l2vpn-03' while Cisco are expecting 17 bytes based on RFC 
4761, causing session establishment for this SAFI to fail.

I believe the motivation for Juniper here was that if you're 
running an all-Junos backbone, you can signal EoMPLS pw's as 
well as VPLS pw's using the same code. As Cisco do not 
support BGP-based signaling of EoMPLS pw's (they insisted on 
LDP, which is fine by me), one can see where the inter-op 
failed.

Admittedly, I stopped being a VPLS fan many years ago, but I 
now see a use-case that might require inter-op for this to 
work, so trying to catch up on how far inter-op development 
has come re: this topic.

Will be eager to hear how your testing goes, Nick. Thanks.

Cheers,

Mark.
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