I can see what you are trying to accomplish on this.
You want it, so that if and when one link (WAN
interface) on the router that connects to the ISP goes
down for the other router to pick up HSRP tasks. Look
into the track command. HSRP has an associated
priority to it, the router with the higher number in
the pair gets to be the "active" one. The track will
look at the interface you want to track, let's say
your S1 interface and subtract a number that you give
the track command from the HSRP priority number,
incase of an outage. So if your router one has a
priority of 110 and your router two has a priority of
100, put a 20 point value track on your E1 interface
(on router one) when and if this interface goes into a
down state the HSRP prioirty of this router will be
reduced to 90, so router two takes over.
You can't go any farther than this "up the path" to
"track" HSRP settings. You'll need to play with
route-maps and the such on BGP for that.
Moe.
--- Priscilla Oppenheimer <[EMAIL PROTECTED]> wrote:
> At 06:07 PM 3/6/01, NetEng wrote:
> >Does HSRP work at the interface level or is the
> entire router on
> >acvtive/stand-by? In other words, if I have two
> routers working in HSRP and
> >a link goes down somewhere down the line, will the
> first router know to
> >fail-over to the second router (with a good link)?
>
> Interesting question. The first router would have to
> lose its connectivity
> to the second router. Routers that are running HSRP
> send and receive
> multicast UDP-based hello packets to detect router
> failure and to designate
> active and standby routers. HSRP detects when the
> designated active router
> fails because of the lack of hello packets, at which
> point a selected
> standby router assumes control of the Hot Standby
> group's MAC and IP
> addresses. A new standby router is also selected at
> that time.
>
> Remember HSRP stands for Hot Standby Router
> Protocol, not Hot Standby
> Routing protocol. It's the default router for LAN
> devices that's on
> standby. If you think of HSRP as a routing protocol,
> then you will tend to
> think it does more than it does. I think to solve
> your problem you need a
> "real" routing protocol, although without more info,
> it's hard to say for
> sure.
>
> Priscilla
>
> > I have one router
> >connected to one ISP and a second router connected
> to a second ISP. Can
> >these routers be run in HSRP or must they be
> running in parallel and let a
> >dynamic routing protocol (BGP on the outside and
> let's say EIGRP on the
> >inside) decide? TIA.
> >
> >
> >_________________________________
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>
>
> ________________________
>
> Priscilla Oppenheimer
> http://www.priscilla.com
>
> _________________________________
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=====
_____________________________________________
Moe Tavakoli
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