[c-nsp] l2vpn vpls w/bgp autodiscovery - me3600x to asr9k

[Waris Sagheer (waris)]

We are also planning to support L2VPN BGP Signaling on ME3800X/ME3600X/ME3600-24CX in 15.3(2)S, March 30th 2013.
As Pete mentioned, Cisco L2VPN implementation has been using LDP for signaling. LDP can be link or targeted. For signaling it always uses targeted LDP sessions.
ASR9K was the first platform in Cisco to support BGP signaling on IOS XR. Moving forward IOS devices will also be supporting BGP Signaling.
BGP Autodiscovery on the other hand has been supported on IOS and IOS XR for a long time.

Regards,
Waris


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Pete Lumbis
Sent: Monday, January 07, 2013 9:27 AM
To: Aaron
Cc: Matthew Melbourne; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] l2vpn vpls w/bgp autodiscovery - me3600x to asr9k

(assuming I understand your question correctly)

We are breaking VPLS into two pieces:

discovery (who are my VPLS peers)
signaling (what labels do those peers want to use)

For both of these pieces we have two options.

Discovery can be done either manually
l2 vfi blue manual
  vpn id 100
  neighbor 192.168.1.1
  neighbor 192.168.1.2

or automatically
l2 vfi blue autodiscovery
 vpn id 100

If we are using auto discovery we just attach the L2 AFI to our BGP peers.
If they support it we look at their VPN IDs and add them to a list of peers for that VPN Identifier (VFI).

Once we have a list of interested parties we need to exchange labels. Again two options:
LDP (think P to P)
BGP (think L3VPN PE to PE)

Why use one over the other is a philosophical argument.

For most Cisco implementations of autodiscovery we will use BGP to build the list of peers that we will make targeted LDP sessions to.

Hope this helps.

-Pete



On Mon, Jan 7, 2013 at 10:37 AM, Aaron <aaron1 at gvtc.com> wrote:

>
> ...also, the idea for bgp OR ldp for the signaling portion....does the 
> targeted ldp neighbor session mean that these devices are using ldp 
> for signaling within the vpls w/bgp autodiscovery architecture OR does 
> the ldp targeted neighbor session exists *regardless* ?
_______________________________________________
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/