Hi, Having passive for the ISDN int would stop OSPF multicast hellos from going across the ISDN interface. You could still do a neighbor statement though which is unicast however.
If the ISDN is bouncing, it's probably due to a route-redistribution problem or some form of IP traffic going out the ISDN interface. Do you have other routing protocols sending updates out ISDN (use passive interface for those routing protocols). Check your redistribution, do you have filters to not allow the ISDN/dialer interface IP subnet to be redistributed into OSPF again? To see whats triggering the ISDN/dialer int do: show dialer (should have a reason) debug interface bri/dialer debug ip pack (see note below) Debug ip pack generates a lot of output and might/will crash the router so be careful with it. If you use the debug interface (interface) condition then the debug output will only show traffic in/out of the interface specified which will narrow down the output. --- timothy thielen wrote: > If one wishes for routing updates to bring up the > link, can one not just use > the "passive-interface" command on the ISDN > interface? > > If it is a backup link, passive interface will > keep routing updates will > keep the link from coming up for updates. Then a > couple of floating static > routes on either end should bring it up if the > primary (dynamic)link goes > down as long as the administrative distance for the > floaters are greater > then that of OSPF. > > --Tim > > Ruihai An wrote: > > > > Hi, Group, > > > > On an ISDN circuit running ospf , if I want to use > "ip ospf > > demand-circuit" > > to keep it from being brought up by ospf update, > do I need to > > define > > 224.0.0.5 as non-interesting traffic in > dialer-list? > > > > I have configured "ip ospf demand-circuit" on one > side of the > > ISDN, but > > routing update to 224.0.0.5 keeps activating the > circuit? What > > is the > > problem? > > > > Thanks > > > > Ruihai [EMAIL PROTECTED] __________________________________________________ Do You Yahoo!? Yahoo! Games - play chess, backgammon, pool and more http://games.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=42463&t=42348 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
