From: John Elias (jelias_@xxxxxxxxxxx)
Date: Tue Sep 04 2001 - 21:39:51 GMT-3
Adam,
Thanks for all your help, I got it to work correctly from your advice.
Thanks again,
John
>From: "BRZYSKI, ADAM E (SWBT)" <ab1723@sbc.com>
>Reply-To: "BRZYSKI, ADAM E (SWBT)" <ab1723@sbc.com>
>To: John Elias <jelias_@hotmail.com>, ccielab@groupstudy.com
>Subject: RE: ip ospf deamd-circuit
>Date: Tue, 4 Sep 2001 16:22:18 -0500
>
>What you area doing kind of works as you described below. However your
>approach negates the purpose of a ip OSPF demand circuit. Note that the
>demand circuit suppresses hellos and LSA as long as there are no topology
>changes. Once a change happens the change is send over the demand circuit.
>I am assuming that you are redistributing to a different routing protocol
>somewhere within your topology. If this is true what you are really
>dealing
>with is a routing loop. If you do show ip OSPF database you will probably
>see the ISDN IP network in the type-5 LSA table. What is happening is that
>you are redistributing to another routing protocol and that protocol is in
>turn redistributing the information back to OSPF. This is what causes the
>demand circuit to go up and down. Use a route map or a distribute list to
>filter the other routing protocol from advertising the ISDN IP network back
>to OSPF. Once you do that you'll notice that the ISDN will stay down. The
>best way to verify your filtering is to make sure that the ISDN IP network
>does not appear in the OPSF database under type-5 LSA's. Hope this helps!
>
>Adam Brzyski
>Design Engineer II
>CCIE #8082, NNCDE
>
>
>-----Original Message-----
>From: John Elias [mailto:jelias_@hotmail.com]
>Sent: Tuesday, September 04, 2001 3:35 PM
>To: ccielab@groupstudy.com
>Subject: ip ospf deamd-circuit
>
>
>Guys,
> I know this question was asked before, but I need a definit answer.
>The
>ip ospf demand-circuit command when running it over bri interfaces, does
>not
>
>work for me. It seems that I need to filter out ospf multicasts so that
>the
>
>line does not come up again. The only problem is that when the serial goes
>down, the bri interface does not come up. I have to ping the other side to
>get the bri interface to come up. Can someone please post a config that
>might work.
>
>John
>
>
>
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