From: Rivalino YMT. (rivel131@cyberlib.itb.ac.id)
Date: Tue Jul 22 2003 - 23:54:40 GMT-3
Hi Tim,
The problem arises when redistributing OSPF to RIP. You can see from the
topology, RIP is running on R2 and R4. OSPF is running on R2 and the rest
(except R9).
RIP always creates /32 route (in this case int BRI0) when redistributing
OSPF to RIP, and this /32 route can be eliminated with " no peer-neighbor
route".
Since you should not use "no peer-neighbor route" command, you can simply
deny isdn network being redistributed to RIP.
R2
router rip
redistribute ospf 1 metric 2 route-map 2RIP
!
route-map 2RIP deny 10
match ip address 1
!
route-map 2RIP permit 20
!
access-list 1 permit (ISDN Network)
Good explanation is found in "Troubleshooting IP Routing Protocols" by
Cisco Press.
-Rivalino
On Tue, 22 Jul 2003, Snow, Tim wrote:
> Hey All...
>
> The last requirement for IP expert lab 29, they're asking to do OSPF demand
> circuit over ISDN with CHAP. That wasn't difficult. The last statement of
> the requirement was "Do not use the command "no peer neighbor-route" on
> either routers.
>
> Since the requirements state that I have to do CHAP, that means I have to do
> PPP. I was thinking maybe HDLC over the ISDN. Without that peer
> neighbor-route command, I haven't been able to figure out a way to get rid
> of the /32 route.
>
> I also tried a "dialer map ip x.x.x.x" where x.x.x.x was the actual subnet
> instead of the 32 bit address of the neighbor and my ISDN wouldn't dial (but
> it works with the /32 mapped) Is this correct or am I missing something.
>
> Any comments on the requirement or the dialer-map question would be greatly
> appreciated.
>
> Tim
>
>
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