From: Daniel Keller (DMKeller@xxxxxxxxxxxx)
Date: Wed Sep 20 2000 - 18:48:21 GMT-3
Because the BRI's are in area 0, OSPF updates will constantly be triggering the
ISDN line. How do you keep this line from always coming up?
>>> Kevin Baumgartner <kbaumgar@cisco.com> 09/19/00 09:42PM >>>
Why do say that OSPF demand circuit won't cut it?
The key to using demand circuit is
1. Define the bandwidth on the BRI interface to be less that serial interface
2. If doing any redistribution on either of the BRI routers
filter such that IP subnet between the two BRI router
interfaces doesn't get redistributed. If you let this route
through the BRI interface will flap because of routing updates.
3. Define OSPF demand circuit on only one router (optional).
The other two methods to do this is like you said dialer watch-list
and backup interface.
Kevin
>
> Hey bud, got a good config for the following ?
>
> s0 & bri0 are in the same area 0 of OSPF
>
> what's a good dial backup config for this for when s0 goes down without bri0
> flapping? demand circuit doesn't seem to cut it, floating statics are out of
> the question, leaving only dialer watch-list (IOS 12.3 & higher) or backup
> interface - but what other way is there if any !?
>
>
> Mike L. Chase
> Sr. Network Architect
> ISG: Information Services Group
> Broadcom Corporation World Headquarters, BLDG A-1050
> 16215 Alton Parkway, Irvine, California 92618-3616
> OFFICE:949-585-6057|CELL:949-283-4254|FAX:949-585-6227
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Kevin Baumgartner
> Sent: Tuesday, September 19, 2000 7:10 PM
> To: Steve McNutt
> Cc: ccielab@groupstudy.com
> Subject: Re: Hello, new on list
>
>
> Yes in theory ISDN is simple but I would be able to do the following
> and have practiced the following on routers.
>
> 1. OSPF on demand circuit
> 2. Dial backup
> 3. Appletalk over ISDN (and how to filter so ISDN is not up all the time)
> 4. IPX over ISDN (also how to filter so ISDN is not up all the time)
> 5. Dialer watch
> 6. PPP Multilink
> 7. PPP CHAP/PAP
> 8. PPP Callback
> 9. Snapshot routing
>
> Kevin
>
> >
> > practice ISDN? ISDN is pretty simple to configure and troubleshoot. DOD
> > routing using rotary groups and dialer profiles gives me fits though hehe.
> > If you don't build your configs in the correct order the dialer interfaces
> > never seem to work right.
> >
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Kevin Baumgartner
> > Sent: Tuesday, September 19, 2000 9:30 PM
> > To: jix@netrue.com
> > Cc: ccielab@groupstudy.com
> > Subject: Re: Hello, new on list
> >
> >
> > If you don't practice ISDN, ATM or FR you have no chance of passing.
> > They have to be part of your practice lab.
> >
> > Kevin
> >
> >
> >
>
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