From: Vijaykrishna (vijaykrishna@xxxxxxxxxxx)
Date: Mon May 15 2000 - 11:33:58 GMT-3
the first step to troubleshoot would be to see the "debug dialer packets" to
find out what is kicking the line
-vj
-----Original Message-----
From: Muthu Mohanasundaram <mmsundar@yahoo.com>
To: ccielab@groupstudy.com <ccielab@groupstudy.com>
Date: Saturday, May 13, 2000 10:12 AM
Subject: Re: OSPF demand circuit
>Hi,
>
>Are you running IGRP, EIGRP or RIP on this router and
>redistributing into OSPF?
>
>If so, you will have to redistribute only the relevant
>routes into OSPF.Use route-maps while redistributing
>into OSPF.
>
>The resaon is, after the idle timer the ISDN will go
>down due to demand circuit, but IGRP (or RIp or EIGRP)
>will see it as a link down and advertise it to the
>IGRP domain. Becasue of redistribution, this will also
>be redistributed into OSPF. Therefore OSPF thinks
>there is a change in topology and brings up the ISDN
>to send the LSA to the other end. This is the reason
>ISDN goes up and down.
>
>So the solution is to redistribute only routes in the
>IGRP domain. You can use route-maps of distribute-list
>in commnad on the IGRP side interfaces.
>
>Read Jeff Doyle pages 776 - 780.
>
>Good Luck,
>
>Mohan.
>
>--- tok cok <tokcok@hotmail.com> wrote:
>> Hi,
>> I thought using ospf demand-circuit will keep the
>> line quiet but seem it is
>> not.
>>
>> Below is the routers' configuration, R5 and R6.
>> Demand-circuit is used on
>> the ISDN link. But the ISDN line keeps going up due
>> to the multicast
>> traffic ( I did a show dialer packet).
>>
>> Can anyone help me in this? Did I miss out anything
>> to make the demand
>> circuit
>> works?
>>
>> Router 6
>> interface BRI0
>> ip address 137.20.224.6 255.255.240.0
>> encapsulation ppp
>> ip ospf demand-circuit
>> dialer idle-timeout 10
>> dialer map ip 137.20.224.5 name R5 broadcast 5552000
>> dialer-group 1
>> no cdp enable
>> ppp authentication chap
>> !
>> !
>> dialer-list 1 protocol ip permit
>> !
>>
>>
>> Router 5
>> interface BRI0
>> ip address 137.20.224.5 255.255.240.0
>> encapsulation ppp
>> dialer idle-timeout 10
>> dialer map ip 137.20.224.6 name R6 broadcast
>> dialer-group 1
>> no cdp enable
>> ppp authentication chap
>> !
>> !
>> dialer-list 1 protocol ip permit
>> !
>>
>>
>>
>> deb dialer packet
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5
>> %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected
>> from 5552000 R5, call
>> lasteds
>> %LINK-3-UPDOWN: Interface BRI0:1, changed state to
>> down
>> %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> BRI0:1, changed state to
>> down
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5 --
>> failed, not connected
>> %LINK-3-UPDOWN: Interface BRI0:1, changed state to
>> up
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5
>> %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> BRI0:1, changed state to up
>> %ISDN-6-CONNECT: Interface BRI0:1 is now connected
>> to 5552000 R5
>> %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected
>> from 5552000 R5, call
>> lasteds
>> %LINK-3-UPDOWN: Interface BRI0:1, changed state to
>> down
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5 --
>> failed, not connected
>> %LINK-3-UPDOWN: Interface BRI0:1, changed state to
>> up
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 64 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 64 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5
>> %ISDN-6-CONNECT: Interface BRI0:1 is now connected
>> to 5552000 R5
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 64 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5
>> %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected
>> from 5552000 R5, call
>> lasteds
>> %LINK-3-UPDOWN: Interface BRI0:1, changed state to
>> down
>> %LINEPROTO-5-UPDOWN: Line protocol on Interface
>> BRI0:1, changed state to
>> down
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>> BRI0: sending broadcast to ip 137.20.224.5 --
>> failed, not connected
>> %LINK-3-UPDOWN: Interface BRI0:1, changed state to
>> up
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>> BRI0: ip (s=137.20.224.6, d=224.0.0.5), 84 bytes,
>> interesting (ip PERMIT)
>>
>>
>>
>>
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