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

[Andrey 'sshd' Petrenko]

Book MPLS Configuration on Cisco IOS Software.  Implementing Layer 2 VPNs
over Inter-AS Topologies Using Layer 2 VPN Pseudo-Wire Switching.


23 сентября 2009 г. 11:10 пользователь Ольга Ружанская
<frosya84 at mail.ru>написал:

> Hello List!
>
> My company is working on building Inter-AS VPN connection with other
> provider (both using MPLS).
> After researching on different option we've decided to use Option B
> (single-hop MP-EBGP).
> The only way to build l2vpn for option B is to use point-to-point VFI on
> ASBRs:
>
> http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_l2vpn_pseudo_swit_ps6922_TSD_Products_Configuration_Guide_Chapter.html#wp1059907
>
> We've found information how to build redundant schemes for L3VPN, but
> redundancy for l2vpn is a problem..
> If we have the following topology (2 ASBRs in one AS with connections to 1
> ASBR in other AS):
> ASBR2(AS2)
>   |
> ASBR1(AS1)
>   |
> ASBR3(AS2)
> is it possible to build a redundant l2vpn?
>
> As I understand, to use L2VPN Pseudowire Redundancy, we need directed
> control protocol between the peer routers, and there is no such protocol
> (LDP, for example) in nature of option B.
> But maybe someone have already decided such question?
>
> I will be very glad for any suggestions/documents(it is so little
> information about inter-as l2!)
>
> Best regards,
> Olga
>
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>



-- 
With best regards,
     Andrey 'sshd' Petrenko
     xmmp: sshd at jabber.org
     gtalk: andy.petrenko at gmail.com
     skype: andy.petrenko
     web: http://sshd.by