From: tria_ka@gmx.net
Date: Tue Mar 11 2003 - 03:51:17 GMT-3
hi
> enter command
> show dialer and see the dial reason.
dial reason : source:bri if and the destination: is 224.0.0.5
i will try it later. actual my lab is not running
but rip is running on another major class
i will tell the result later....thanks at first
> that should tell you if RIP is triggering the call.
> But if you have OSPF/RIP configured on the same router
> and both OSPF/RIP subnets fall under the same major
> class then it is good idea to deny rip updates over
> ISDN.
>
> --- tria_ka@gmx.net wrote:
> > hi,
> >
> > thanks for the information.
> > now i want to deny the rip updates.
> >
> >
> > > There are reasons for the ISDN demand circuit to
> > flap.
> > > topology change on the OSPf network somewhere.
> > > and i see u are redistributing rip.
> > > disallow any rip updates in the dialer list.
> > > also about your question R1 is not allowed to
> > > authenticate.
> > > This means you need to configure PPP
> > > authentication(pap or chap) callin on R2.
> > > This means only R2 is authenticated by R1 but R1
> > is
> > > not by R2.
> > >
> >
> > i wait for a time but the router dial more than 10
> > times.....and never
> > stop..;-)
> >
> >
> >
> > >
> > > Initially when you configure demand-circuit it
> > > typcially goes up and down for a while until the
> > > database are synchronised.
> > > once that is done it should settle down unless
> > > something changes somewhere on the network not
> > > necessarily on OSPF but in rip which gets
> > > redistributed
> > > into OSPF.
> > >
> > > let me know if that helps/
> > >
> > > --- tria_ka@gmx.net wrote:
> > > > hi group,
> > > >
> > > > actual i configure some isdn environments for
> > > > preparing for the lab.
> > > > now i'm a littlie confused about what to do and
> > > > exactly what is the mean of
> > > > the sample questions.
> > > > assume the following:
> > > >
> > > >
> > >
> >
> R1-------ethernet--------(ospf)-R2-(RIP)---------------R3
> > > > (RIP)
> > > > | ospf a0 |
> > > > |_______isdn backup_____________|
> > > >
> > > > R1/R2 speaks ospf and R3 only RIP. Distribution
> > is
> > > > on R2.
> > > >
> > > > Q:isdn should put in ospf area while ethernet
> > > > between R1/R2 too. The same
> > > > area.
> > > > isdn shoul act as backup but without the backup
> > > > statement.
> > > > The isdn link should not flap.
> > > >
> > > > also R1 NOT allowed to authenticate.
> > > > sometimes i also confused about anything like
> > this:
> > > > Rx...shoud not
> > > > challenge.
> > > > what does it mean exactly with not challenge??
> > > >
> > > > first i configure this scenarium without
> > > > authentication and want to test
> > > > ospf demand-circuit.
> > > > but the link always stay up and if it go down
> > there
> > > > comes a broadcast
> > > > 224.0.0.5 and bring it up.
> > > > i think with the demand statement there are no
> > ospf
> > > > packets about this link
> > > > ??
> > > >
> > > > any help ? thanks
> > > >
> > > > udo
> > > >
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