From: Mike S. Lee (mikele@xxxxxxxxx)
Date: Mon Jan 29 2001 - 19:53:38 GMT-3
Thanks to all. I tried the route map solution and it works good.
Thanks again.
Mike Lee
CCNP+LATM+Security+Voice Access/CCDP
NNCSE/NNCDE
Cisco Systems, Inc.
12515 Research Blvd., Bldg. 04
Austin, TX 78759-2200
DSL Customer Support Engineering
mikele@cisco.com
(512)378-1331 ofc
Text Page: mikele@epage.cisco.com
At 02:24 PM 1/29/2001 -0800, Kevin Baumgartner wrote:
>If you prevent the ISDN network from getting redistributed back into OSPF
>from EIGRP the
>dial line won't dial. (assuming there is not some non OSPF that now generates
>the call)
>
> So something like this
>
>Router ospf 1
>network 192.168.0.0 0.0.255.255 area 0
>redistribute eigrp 1 route-map deny-ISDN-network
>default-metric 1
>!
>route-map deny-ISDN-network deny 10
>match ip address 1 <<<<< Don't
>redistribute ISDN Network
>route-map deny-ISDN-network permit 20 back into OSPF from
>EIGRP
>match ip address 2 <<<<< But do allow
>everything else
>!
>access-list 1 permit 192.168.1.0 0.0.0.255
>access-list 2 permit any
>!
>Router eigrp 1
>redistribute ospf 1
>passive BRI
>!
>Interface BRI
>ip add 192.168.1.1 255.255.255.0
>ip ospf demand-circuit
>
>- Kevin
>
>
>
>At 04:10 PM 1/29/01 -0600, Mike S. Lee wrote:
>>How would one stop the dial line from coming up if you are redistributing?
>>
>>
>>Mike
>>At 05:03 PM 1/29/2001 -0500, Rick Burts wrote:
>>>Mike
>>>
>>>There is a pretty well known behavior of demand circuit activating
>>>when the environment includes some other protocol on the router and
>>>redistribution of that protocol into OSPF. Briefly the other protocol
>>>sees the ISDN going down as a routing change which is redistributed into
>>>OSPF which brings the link up to advertise the change. You can look into
>>>the archives for more extensive discussions of this.
>>>
>>>Rick
>>>
>>>Rick Burts, CCSI CCIE 4615 burts@mentortech.com
>>>Mentor Technologies 240-568-6500 ext 6652
>>>133 National Business Parkway 240-568-6515 fax
>>>Annapolis Junction, Md 20701
>>>
>>>Chesapeake Network Solutions has now become Mentor Technologies.
>>>Mentor Technologies is a certified Cisco Training Partner and also
>>>a Cisco Professional Services partner.
>>>We offer most of the Cisco training courses.
>>>We also offer training in Checkpoint Firewall software and
>>>Fore Systems (now Marconi) and MicroMuse.
>>>We also provide network consulting services including
>>>design, management, and problem solving.
>>>We have 22 CCIEs on our staff.
>>>We offer the breakthrough VLAB remote access technology for
>>>access to pratice configuration on real equipment.
>>>
>>>On Mon, 29 Jan 2001, Mike S. Lee wrote:
>>>
>>> > In trying to use the Demand circuit option I still see the dialer
>>> dialing.
>>> > Debugging Q931 is see that the dial cause is 224.0.0.5 which is all spf
>>> > routers. I thought that using an ospf demand circuit should have
>>> suppressed
>>> > all LSA's from going across this line. Can someone either explain this
>>> > behavior or provide a working config that uses demand circuits and only
>>> > comes up when the primary link fails? Any debug outputs would be
>>> helpful as
>>> > well.
>>> >
>>> > thanks
>>> >
>>> > mike
>>> > At 11:53 AM 1/29/2001 -0800, Kevin Baumgartner wrote:
>>> > >I have heard this a few times but I have had no problems using it
>>> with OSPF.
>>> > >Maybe this was a limitation in earlier 12.0 images.
>>> > >
>>> > > Kevin
>>> > >
>>> > >
>>> > >At 01:18 PM 1/29/01 -0600, Wade Edwards wrote:
>>> > > >As I recall dialer watches work only with IGRP and EIGRP. If you
>>> need OSPF
>>> > > >then the demand circuit is the best way to go.
>>> > > >
>>> > > >-----Original Message-----
>>> > > >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>>> > > >Jeremy Gray
>>> > > >Sent: Sunday, January 28, 2001 2:34 PM
>>> > > >To: ccielab@groupstudy.com
>>> > > >Subject: RE: ISDN Backup without the backup interface command?
>>> > > >
>>> > > >
>>> > > >
>>> > > >A demand circuit is useful if you really msut run OSPF over an
>>> ISDN line.
>>> > > >
>>> > > >A better answer to this problem is to use a dialer watch-list, a
>>> very cool
>>> > > >facility used to trigger DDR when a 'watched' route is absent in
>>> the routing
>>> > > >table.
>>> > > >
>>> > > >This is great for a number of reasons.
>>> > > >
>>> > > >1) Packet switched networks are not the best at telling a DTE when
>>> there's a
>>> > > >problem in the cloud. Examples being ATM and FR
>>> > > >Interface may stay up/up even if the remote is down.
>>> > > >
>>> > > >2) You can place a DDR in a place further into your network rather
>>> than on
>>> > > >the same router as a critical link and still have DDR work when
>>> the link
>>> > > >fails if the routes being watches originate beyound the point of
>>> failure.
>>> > > >
>>> > > >Regards,
>>> > > >
>>> > > >Jeremy.
>>> > > >
>>> > > >PS: Joined today. Lab date March 8th.
>>> > > >-----Original Message-----
>>> > > >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>>> > > >Robert DeVito
>>> > > >Sent: 28 January 2001 16:39
>>> > > >To: obuba@bellatlantic.net; mac38456@pegasus.cc.ucf.edu;
>>> > > >ccielab@groupstudy.com
>>> > > >Subject: Re: ISDN Backup without the backup interface command?
>>> > > >
>>> > > >
>>> > > >
>>> > > >
>>> > > >Another thing to keep in mind is that ospf demand circuit will
>>> cause the
>>> > > >isdn circuit to come up when there is a topology change.. So don't be
>>> > > >shocked when it comes up every once and awhile.
>>> > > >
>>> > > >Robert
>>> > > >
>>> > > >----Original Message Follows----
>>> > > >From: "Nnanna Obuba" <obuba@bellatlantic.net>
>>> > > >Reply-To: "Nnanna Obuba" <obuba@bellatlantic.net>
>>> > > >To: "Miguel A. Ciena" <mac38456@pegasus.cc.ucf.edu>,
>>> > > ><ccielab@groupstudy.com>
>>> > > >Subject: Re: ISDN Backup without the backup interface command?
>>> > > >Date: Sun, 28 Jan 2001 10:10:43 -0500
>>> > > >
>>> > > >That's no trick, use ospf demand circuit
>>> > > >
>>> > > >
>>> > > >Nnanna Obuba, CCIE # 6586
>>> > > >www.nantech.com
>>> > > >Online lab for CCIE Preparation
>>> > > >----- Original Message -----
>>> > > >From: "Miguel A. Ciena" <mac38456@pegasus.cc.ucf.edu>
>>> > > >To: <ccielab@groupstudy.com>
>>> > > >Sent: Sunday, January 28, 2001 9:07 AM
>>> > > >Subject: ISDN Backup without the backup interface command?
>>> > > >
>>> > > >
>>> > > > > Between R3 and R5 I got a ISDN link. I want to configure my
>>> ISDN to =
>>> > > > > back-up my frame relay connection between R3 and R5...Here is
>>> the Trick:
>>> > > >=
>>> > > > > Without using Floating Static and without using the Back-up
>>> interface =
>>> > > > > command..My Frame and ISDN are in OSPF area 0...
>>> > > > >
>>> > > > > any ideas..
>>> > > > >
>>> > > > >
>>> > > > >
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