From: Zack Damen (zack@supertux.com)
Date: Thu May 20 2004 - 15:36:18 GMT-3
Ahmed, you need a GRE tunnel to make that work so that IS-IS can get the
LSA across, unless anyone else knows a better answer?
Zack
At 10:52 AM 5/20/2004, Ahmed Mustafa wrote:
>If I am running Frame-Relay between two routers.
>
>R1 is configured with point-to-point
>and R2 is configured with phyiscal interface.
>
>
>r1
>-----
>
>int s0.1 point-to-point
>ip address 1.1.1.1 255.255.255.0
>frame-relay intf-dlci 102
>
>r2
>-------
>
>int s0
>ip address 1.1.1.2 255.255.255.0
>frame-relay map ip 1.1.1.1 201 broadcast.
>
>Now I enable ISIS between those routers:
>
>on r2 (with newer ios)
>
>I could actually configure
>isis network point-to-point
>
>For example,
>
>r2
>------
>int s0
>ip address 1.1.1.2 255.255.255.0
>frame-relay map ip 1.1.1.1 201 broadcast
>isis network point-to-point
>frame-relay map clns 201 broadcast---------> Do I still need this command,
>that is my question
>
>If lab doesn't allow to use isis network point-to-point command, then I will
>have no choice, but to run tunneling
>
>For tunneling, please verify my configs.
>
>r1
>-------
>int s0.1 point-to-point
>ip router isis
>
>int tun0
>ip unnumbered int s0.1
>ip router isis
>tunnel source 1.1.1.1
>tunnel destination 1.1.1.2
>
>r2
>--------------
>int s0
>ip router isis
>
>int tun0
>ip unnumbered int s0
>ip router isis
>tunnel source 1.1.1.2
>tunnel destination 1.1.1.1
>tunnel destination 1.1.1.2
>
>Some sources define not to run ip router isis on physical interface that is
>used as an ip unnumbered under the tunnel interfaces. Instead just run ip
>router isis on tunnel interfaces, and use passive interface command for
>physical interfaces that is used as an ip unnumbered under isis rouing process
>such as
>
>r1
>-------
>router isis
>passive interface s0.1
>
>r2
>
>------
>
>router isis
>passive interface s0
>
>Any differences,
>
>Ahmed
>
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