[c-nsp] HSRP, and the router on the other side...

[Peter Rathlev]

On Tue, 2010-03-30 at 11:47 +0100, Phil Mayers wrote:
> As I said, I wouldn't even do that personally. HSRP doesn't work that 
> way, the locally connected route is "up" and will always override,
> e.g. in the following topology:
> 
> offsite -- router-slave -- router-master
>               |             |
>               \--- subnet --/
> 
> ...traffic from "offsite" will always be routed out of router-slave;
> no amount of fiddling with route metrics will help you there. You
> could do something awful like have the HSRP master advertise more
> specifics, but honestly... yuck...

I a tactless attempt to digress, an MPLS VPN setup would actually give
you the ability to force "router-master" to receive all traffic from
upstream. Having the router-master use a higher local-preference for the
prefix in MP-BGP would force others to use the LSP terminating at
router-master.

I'm not saying that's a good idea though. :-)

Redundancy and asymmetry go hand in hand. As you pointed out previously:
The best way to handle it all is to just live with how it works. Most
work-arounds tend to make the network less efficient in terms of
forwarding performance.

-- 
Peter