From: Robert Thompson (rthompson@xxxxxxxxxxxxx)
Date: Sun Jul 18 1999 - 22:47:50 GMT-3
I haven't tried this (with an async that is), but to have the async
come down you will need to configure it for DDR. If the link's normal
behaviour is to be down & brought up by interesting traffic, then you
have mostly won with this. Then the ospf demand-circuit can do its job
properly.
Otherwise I don't think you'll be able to see this work. The ospf
demand-circuit
only works on DDR links as it suppresses the periodic hellos and LSA updates
that would otherwise bring the circuit up or cause a time-out problem for
ospf. Like a snapshot in concept.
---------------------------------
Robert Thompson, CCIE, MCSE
Business Integration Solutions
44 Ellingworth Pde, Box Hill 3128
Australia
Office +61 3 9899 5111
FAX +61 3 9899 7671
Mobile 0407 368 154
Internet: rthompson@busint.com.au
---------------------------------
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Hutchinson, Ian
> Sent: Thursday, 15 July 1999 14:31
> To: Bill Carter; CCIE Lab group
> Subject: RE: OSPF over async
>
>
> Bill,
>
> You got me on that one. I have successfully got the Async int's up and
> reporting that they are POINT_TO_POINT and alive and well. I have
> configured
> both rtrs Asyncs as follows:
>
> conf t
> line aux 0
> modem inout
> flow hard
> speed 38400
>
> int async 1
> ip address 130.130.10.1 & .2 255.255.255.0
> async mode ded
> async default routing
> async dynamic routing
>
> Having done this you'll need to bring the async ints on both ends of the
> cable up together (at least within a couple of seconds of each other.) I
> guess you've already got this far.
>
> I then have in my "router ospf 100" config as follows
>
> network 130.130.10.0 0.0.0.255 area 1
>
>
> I am trying to get on demand routing to work across the async's with no
> luck. I want the async to be a back up link to area 0 should the primary
> serial/frame relay service fail. I have used the interface
> command "ip ospf
> demand" command on the int's. But for some reason when i shut the serial
> link down the async won't forward the ospf packets. Do I need to
> use ddr on
> the async int's ? The Async's are up all the time and I would like them to
> be down until the serial breaks.
>
> Any ideas will be greatly appreciated.
>
>
> Regards Ian.
>
> -----Original Message-----
> From: Bill Carter [mailto:bcarter@family-net.net]
> Sent: Saturday, July 10, 1999 1:53
> To: CCIE Lab group
> Subject: OSPF over async
>
>
> I'm stumped on this one. I have configured 2 routers to connect
> Aux-to-Async. The connection is up and I can ping both sides of the
> connection. a sho ip ospf int async # on both interface show they are
> configured for ospf. It also shows, under timers, No Hellos (passive
> interface)
>
> Why, I have no passive interface commands and the async ports have
> "async dynamic routing"????
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~
> Bill Carter
> Senior Network Analyst
> Sentinel Technologies
> http://www.sentinel.com
> pg 800-612-6810
> wk 217-557-5011
> of 217-698-9200
>
> Favorite Quote
> "bodega stuck again... "
> -Cisco Bug CSCdk37204
> ~~~~~~~~~~~~~~~~~~~~~~~~
>
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