[c-nsp] Inter-AS L2VPN redundancy, option B (Ruzhanskaya Olga)

[Mark Tinka]

On Thursday 24 September 2009 03:15:49 pm Ольга Ружанская 
wrote:

> Thank You for book,
> but approach proposed in it is for redundancy inside 1
> AS, not between 2 AS. I've seen it on cisco.com before..

Funny you should mention this - I was just talking to our 
account team about options for EoMPLS NNI's from an inter-op 
point of view.

Basically, L2VPN Pseudowire Switching and Back-to-Back 
VLAN's are a single point of failure. You may add redundancy 
by replicating NNI sessions, but this may not be scalable 
from a management perspective.

You may also consider the options provided by Phil re: 
Option C. I can't say we've looked at that yet.

But yes, if Cisco supported Option B BGP-style, that would 
have been possible. But they do not.

Cheers,

Mark.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 835 bytes
Desc: This is a digitally signed message part.
URL: <https://puck.nether.net/pipermail/cisco-nsp/attachments/20090928/2f385ea3/attachment-0001.bin>