Use two links between the switches on different cards.
The thing we used to do was use Lancast transceivers which allow one
router port to connect to both switches with a primary and backup. It
senses link on the primary and will failover to the secondary if link
goes down. The rackmount verison has two power supplies for added
redundancy.
hope this helps
-kirk
On Tue, 30 Jan 2001, Jim Healis wrote:
> So, you are thinking of using multiple ports for the connection between
> the switches?
>
> That was my last refuge as well. I was looking to see if anyone had
> implemented anything else, and how it turned out for them.
>
> Brant Stevens wrote:
>
> > A trunked EtherChannel link would cover those problems...
> >
> > Brant I. Stevens
> > Internetwork Solutions Engineer
> > Thrupoint, Inc.
> > 545 Fifth Avenue, 14th Floor
> > New York, NY. 10017
> > 646-562-6540
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> > Jim Healis
> > Sent: Tuesday, January 30, 2001 3:47 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: HSRP configuration
> >
> >
> > What about physical port failure? Or cable failure (i.e. gets yanked
> > out by an idiot)?
> > That's the kind of failure I was thinking of when I mentioned the single
> > point.
> >
> > Brant Stevens wrote:
> >
> >
> >> Why not use an etherchannel connection for the isl link between the
> >> switches. this would eliminate the single point of failure....
> >>
> >> Brant I. Stevens
> >> Internetwork Solutions Engineer
> >> Thrupoint, Inc.
> >> 545 Fifth Avenue, 14th Floor
> >> New York, NY. 10017
> >> 646-562-6540
> >>
> >> -----Original Message-----
> >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> >> Jim Healis
> >> Sent: Tuesday, January 30, 2001 2:21 PM
> >> To: [EMAIL PROTECTED]
> >> Subject: HSRP configuration
> >>
> >>
> >> For those that have used HSRP in your networks for redundant external
> >> connections, how have you dealt with the "single point of failure" issue
> >> when you have two routers, two switches and using ISL to run HSRP
> >> between them?
> >>
> >> I have two 7206VXR routers, two Cat 6509 switches. My current drawing
> >> shows using the ISL uplinks from the switches to the routers and the ISL
> >> link between the two switches to pass HSRP heartbeat. But I figure that
> >> if the ISL link between the switches ever drops, then I have lost the
> >> heartbeat and I have two active routers trying to be active HSRP.
> >>
> >> I thought about using MHSRP, and having two separate groups for the two
> >> separate switches the routers are connected to, but I still run into
> >> that hearbeat thing again.
> >>
> >> The last thought that I had was to run two ethernet segments from each
> >> router to each switch. That would give the needed redundancy, but it
> >> would cost so much.
> >>
> >> Any ideas?
> >>
> >> Jim
> >>
> >> _________________________________
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