[c-nsp] hsrp/vrrp with mpls vpn's

[Sascha Pollok]

> On 8 September 2010 08:44, Michael Sprouffske <msprouffske at yahoo.com> wrote:
>> So, I have this hsrp lab setup with a coulple PE routers and come CE routers.  Everything works and all is well.  I wanna know how the 2 PE routers that are playing in the hsrp role notify other PE routers upstream or if they do.  So for example, I have one CE1 router attached to  PE1 and PE2  and they are doing hsrp and it works well. I also have PE3 and PE4 attached to CE2.   How do PE1 and PE2 communicate the hsrp stuff to PE3 and PE4 or do they need to?  How does PE3 and PE4 know where to send packets?
>
> They don't notify anyone in normal circumstances. HSRP address is only
> used by traffic from CEs towards PEs. In the other direction normally
> both PEs advertise the same 'connected' network, and the rest of the

This reminds me of a long-time wish that I have that has not been
satisfied yet :) As I would like to also influence the traffic
from the backbone to the PE (thus, to connected routes redistributed
into the IGP) I would like to modify the admin distance or metric for the
connected routes for a particular interface. So that I can tweak the
connected routes in a way that traffic Backbone->PE also prefers the
HSRP/VRRP master (not to mention "tweak connected routes according to
HSRP status").

I know I could tweak the redistribute connected in my OSPF router
using route-maps but that would require listing all connected routes
in ACLs or similar.

Anyone with a good solution for that one?

Cheers
Sascha