From: Joe Chang (changjoe@earthlink.net)
Date: Mon Feb 03 2003 - 20:12:48 GMT-3
Oh yeah, duh. Wasn't thinking.
Good question. The dial is triggered by use of the default route when the
primary goes down, but there is no guarantee the dial will stay up while
the primary remains down.
It's implied in the question that we cannot rely on traffic to keep idle
timer from coutning down while the primary has not recovered yet.
On the other hand we don't want to keep ISDN up when the primary recovers.
I don't think there's any bug-proof way to do this with only a default and a
static and no routing protocol info. Otherwise they wouldn't need to come up
with features like serial back-up or dialer watch.
----- Original Message -----
From: "Tony Schaffran" <tschaffran@cconlinelabs.com>
To: "Joe Chang" <changjoe@earthlink.net>; <Sam.MicroGate@usa.telekom.de>;
<ccielab@groupstudy.com>
Sent: Monday, February 03, 2003 6:31 PM
Subject: Re: ISDN link is not any routing protocols
> Joe,
>
> Then, how would your ISDN ever come down?
>
>
>
> Tony Schaffran
> Network Analyst
> CCNP, CCNA, CCDA,
> NNCSS, NNCDS, CNE, MCSE
>
> www.cconlinelabs.com
> "Your #1 choice for Cisco rack rentals."
>
>
> ----- Original Message -----
> From: "Joe Chang" <changjoe@earthlink.net>
> To: <Sam.MicroGate@usa.telekom.de>; <ccielab@groupstudy.com>
> Sent: Monday, February 03, 2003 12:50 PM
> Subject: Re: ISDN link is not any routing protocols
>
>
> > Set dialer idle-timeout to 0 on both ends.
> >
> > ----- Original Message -----
> > From: <Sam.MicroGate@usa.telekom.de>
> > To: <ccielab@groupstudy.com>
> > Sent: Monday, February 03, 2003 5:10 PM
> > Subject: ISDN link is not any routing protocols
> >
> >
> > > Hello,
> > >
> > > I have a scenario that states the following:
> > > 1- ISDN link does not belong to any routing protocols.
> > > 2- You are allowed one default route in one side and a static route in
> the
> > > other side.
> > > 3- The side that has a default route should able to initiate an isdn
> call
> > if
> > > it loses its connectivity to the network.
> > > 4- Only the side that has the default route should be able to initiate
> an
> > > isdn call.
> > >
> > > To meet these requirement I configure a default route pointing to next
> hop
> > > address (address in the dialer map statement) and then I redistribute
> > static
> > > into the IGP. This works fine. If I shut down the serial interface,
the
> ip
> > > traffic initiate the isdn link and I can reach every part of the
> network.
> > > However, after the idle time out, I can not reach the ip address of
the
> > isdn
> > > link from various parts of the network (because it is down) Is any
> > > workaround for this. Thanks.
> > >
> > > Sam
> > > .
> > .
> .
.
This archive was generated by hypermail 2.1.4 : Sat Mar 01 2003 - 11:06:06 GMT-3