From: Dave Temkin (dave@ordinaryworld.com)
Date: Sat Oct 29 2005 - 17:15:32 GMT-3
using debug ip routing here would be helpful - he should be able to see
the changes to the table that are causing OSPF to dial..
-Dave
On Sat, 29 Oct 2005, Brian Dennis wrote:
> Leigh,
> I pasted your configurations into a rack and didn't notice any
> problems. I was looking to see if the idle timeout was possibly set to
> low but it wasn't.
>
> You should try to isolate the OSPF network across the ISDN to
> see if there are any topology changes that may be keeping the ISDN line
> up. You can do this by just running OSPF between R1 and R2 across the
> ISDN.
>
> HTH,
>
> Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
> bdennis@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Direct: 775-745-6404 (Outside the US and Canada)
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Leigh Harrison
> Sent: Saturday, October 29, 2005 3:38 AM
> To: FORUM
> Subject: IP Ospf Demand-Circuit
>
> 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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