Re: IP Ospf Demand-Circuit

From: kevin gannon (kevin@gannons.net)
Date: Sat Oct 29 2005 - 08:10:38 GMT-3


I would do a debug ip routing and or debug ip ospf lsa
to see why LSA's are changing and causing the ISDN
to be brought up.

Regards
Kevin

On 10/29/05, Leigh Harrison <ccileigh@gmail.com> wrote:
> All,
>
> I've got an ospf demand circuit configured up and it doesn't seem to be
> playing the game.
>
> I've debug'd ip packet (on R1) and I see the ospf packet (224.0.0.5)
> being sent to 2.2.2.1 and then it brings the line up, even though I've
> got demand circuit configured.
>
> Am I missing something obvious ?
>
> LH
>
> -----------------------
>
> I have:-
> R1 --- frame --- R2
> | --- ISDN --- |
>
> -----------------------
>
> R1
>
> int bri 0
> ip add 2.2.2.1 255.255.255.252
> ip ospf demand-circut
> dialer idle-timeout 10
> dialer map ip 2.2.2.2 broadcast 11
> dialer-group 1
> isdn switch-type basic-net3
> no cdp enable
>
> dialer-list 1 protocol ip permit
>
> int s0
> ip add 1.1.1.1 255.255.255.0
> .
> .
>
> router ospf 1
> network 1.1.1.1 0.0.0.0 ar 0
> network 2.2.2.1 0.0.0.0 ar 0
>
> -----------------------
>
> R2
>
> int bri 0
> ip add 2.2.2.2 255.255.255.252
> ip ospf demand-circut
> dialer idle-timeout 10
> dialer map ip 2.2.2.1 broadcast 21
> dialer-group 1
> isdn switch-type basic-net3
> no cdp enable
>
> dialer-list 1 protocol ip permit
>
> int s0
> ip add 1.1.1.2 255.255.255.0
> .
> .
>
> router ospf 1
> network 1.1.1.2 0.0.0.0 ar 0
> network 2.2.2.2 0.0.0.0 ar 0
>
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