Cisco allows up to 4 serial links in the same subnet. There are situations
where you would want to do that, but I cannot for the life of me recall what
they are... I did read about it once, and actually had to research it with
the TAC. Search the TAC archives and you will find the message from them
that indicates you cannot do the 5th link...
Z
>From: "Michael Snyder" <[EMAIL PROTECTED]>
>Reply-To: "Michael Snyder" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: redundant serial links in same subnet??
>Date: Sun, 25 Mar 2001 11:50:19 -0800
>
>/24? Subnet them. I like /30 for p to p links. run rip version 2.
>
>
>"Dimitrije" <[EMAIL PROTECTED]> wrote in message
>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > I colleague of mine has a network connecting two routers with redundant
>serial
> > links. These serial links happen to reside in the same subnet as
>follows:
> >
> > Router
> > A
>Router
> > B
> > S0 - 192.1.67.1/24 ----------------------------- 192.1.67.201/24 - S0
> > S1 - 192.1.67.2/24 ----------------------------- 192.1.67.202/14 - S1
> >
> > Both Routers are running RIP.
> >
> > When both links are up, network is very sluggish and ping works
>intermittently
> > (anywhere from 40%-70% of the time) between Routers A & B. When either
>link is
> > shut down (only one link is up at a time), pings work 100% of the time.
> >
> > I'm suspecting that having both serial links in the same subnet is
>creating
> > problems. First of all, can you even do this? Secondly, if you can put
>both
> > serial 0 & 1 in the same subnet, is this creating a layer-2 bridge-loop
> > environment?
> >
> > I think that putting each serial link in a separate sub-net should solve
>the
> > problem, but I don't have access to any equipment to test this.
> >
> > Am I correct or off-base?? Any definitive feedback would be great. Any
>links
> > to spell out the issues with this scenario would also be helpful.
> >
> > thanks,
> > dj
> >
> >
> > _________________________________
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> >
>
>
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