From: David Oakman (doakman@xxxxxxxx)
Date: Wed Aug 18 1999 - 22:37:17 GMT-3
Jim,
Try this on R0 or R4
Sho fr map
clear FR
Sho fr map
you should lose connectivity to your hub from the spoke.
This is a classic Inverse arp issue like ed had stated. What will happe
n at the lab is the proctor would reboot one of your routers (R0/R4) and your n
etwork would no longer work.
I am not certain why the additional dlci's would cause a problem on the
hub. I would add the additional frame frlay map statements on the spokes and t
hen see if the problem still exisits.
What does a debug ip packet show (on both sides) ?
ttfn
daveo
-----Original Message-----
From: Jim Ayers [SMTP:jayers@cisco.com]
Sent: Wednesday, August 18, 1999 7:28 PM
To: Edward Ruszkiewicz; ccielab@groupstudy.com
Subject: RE: FR Question
Edward,
Thanks. I know I can use a fr map for R4, but I don't think it's necessary. I
n fact, as long as the switch announces only the two required PVCs then the ina
rp works just fine as can be seen below:
r4#sh fr map
Serial0 (up): ip 132.10.64.1 dlci 114(0x72,0x1C20), dynamic,
broadcast,, status defined, active
Serial0 (up): ip 132.10.64.2 dlci 111(0x6F,0x18F0), dynamic,
broadcast,, status defined, active
The problem is when the switch announces more than one dlci; The two spokes c
an no longer ping each other.
Any other ideas.
Jim.
At 12:38 PM 8/18/1999 -0500, Edward Ruszkiewicz wrote:
>You should use a frame relay map statement for R4 on each spoke. Inv-arp is
>disabled per dlci per protocol with a static mapping. It may remain for
>awhile, until cache cleared. I'm not certain about your extra dlci question?
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Jim Ayers
>Sent: Wednesday, August 18, 1999 11:44 AM
>To: ccielab@groupstudy.com
>Subject: FR Question
>
>
>The topology:
>
>R0 --------------|
> ____|_____
> | fr switch |---------- R4
> |_________|
> |
>R3 --------------|
>
>where R0, R3 are spokes; R4 is the hub
>
>Relevant Configs:
>
>R0:
>interface Serial0
> ip address 132.10.64.2 255.255.255.0
> encapsulation frame-relay
> frame-relay map ip 132.10.64.1 101 broadcast
>
>R3:
>interface Serial0
> ip address 132.10.64.1 255.255.255.0
> encapsulation frame-relay
> frame-relay map ip 132.10.64.2 121 broadcast
>
>R4:
>interface Serial0
> ip address 132.10.64.3 255.255.255.0
> encapsulation frame-relay
>
>Problem: The above works fine (ie all routers can ping each other) provide
>the FR switch only announces the minimum number of necessary DLCIs. As soon
>as the switch is configured to announce "extra" DLCIs, the two spokes can
>not ping each other.
>
>Question: Why does this happen and how to fix it?
>
>
>Thanks. It's got to be something simple that I'm missing. All my other FR
>configs work fine.
>
>
>
>
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