From: Niche (jackyliu419@gmail.com)
Date: Sat Oct 29 2005 - 23:12:22 GMT-3
Hi guys,
Leigh's problem remind me of something that happened not long ago... have
you try reboot your routers?
Furthermore, I have exactly the same problem like a weeks ago when I was
doing lab. However, I solved it when I applied deny ospf in dialer-list.. I
still don't know why ospf demand-circuit didn't work..
Cheers~
Jacky
On 10/30/05, Brian Dennis <bdennis@internetworkexpert.com> wrote:
>
> Didn't we just cover this last week? The interface isn't configured for
> PPP encapsulation so the command isn't needed ;-) Also the peer
> neighbor route and OSPF demand-circuit by themselves will not cause a
> problem.
>
>
>
> 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)
>
>
>
> ________________________________
>
> From: Schulz, Dave [mailto:DSchulz@dpsciences.com]
> Sent: Saturday, October 29, 2005 4:16 PM
> To: Dave Temkin ; nobody@groupstudy.com; Brian Dennis
> Cc: Leigh Harrison ; FORUM
> Subject: RE: IP Ospf Demand-Circuit
>
>
>
> It may be a good practice to add the no peer neighbor command, so the
> ISDN addresses avoid changing the OSPF database. This would cause the
> ospf demand to not play the game.
>
> Dave
>
> -----Original Message-----
> From: nobody@groupstudy.com
> To: Brian Dennis
> Cc: Leigh Harrison; FORUM
> Sent: 10/29/2005 7:02 PM
> Subject: RE: IP Ospf Demand-Circuit
>
> True, but it's a good place to start...
>
> -Dave
>
> On Sat, 29 Oct 2005, Brian Dennis wrote:
>
> > The routing table itself doesn't necessarily have to change.
> >
> > 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: Dave Temkin [mailto:dave@ordinaryworld.com]
> > Sent: Saturday, October 29, 2005 1:16 PM
> > To: Brian Dennis
> > Cc: Leigh Harrison; FORUM
> > Subject: RE: IP Ospf Demand-Circuit
> >
> >
> > 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<http://224.0.0.5>
> )
> > > being sent to 2.2.2.1 <http://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 <http://2.2.2.1> 255.255.255.252<http://255.255.255.252>
> > > ip ospf demand-circut
> > > dialer idle-timeout 10
> > > dialer map ip 2.2.2.2 <http://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 <http://1.1.1.1> 255.255.255.0 <http://255.255.255.0>
> > > .
> > > .
> > >
> > > router ospf 1
> > > network 1.1.1.1 <http://1.1.1.1> 0.0.0.0 <http://0.0.0.0> ar 0
> > > network 2.2.2.1 <http://2.2.2.1> 0.0.0.0 <http://0.0.0.0> ar 0
> > >
> > > -----------------------
> > >
> > > R2
> > >
> > > int bri 0
> > > ip add 2.2.2.2 <http://2.2.2.2> 255.255.255.252<http://255.255.255.252>
> > > ip ospf demand-circut
> > > dialer idle-timeout 10
> > > dialer map ip 2.2.2.1 <http://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 <http://1.1.1.2> 255.255.255.0 <http://255.255.255.0>
> > > .
> > > .
> > >
> > > router ospf 1
> > > network 1.1.1.2 <http://1.1.1.2> 0.0.0.0 <http://0.0.0.0> ar 0
> > > network 2.2.2.2 <http://2.2.2.2> 0.0.0.0 <http://0.0.0.0> ar 0
> > >
> > >
> >
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