You can run cdp on bothsides (do not forget to add cdp protocol in dialer
list)
this may be the least risky way of teting the ISDN line
Gugana
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 05, 2001 11:57 PM
To: [EMAIL PROTECTED]
Subject: ISDN Dialup Backup
We use floating static routes rather than dial backup, but here's one way
of doing it...
Remove the dial backup command.
Add a static IP route to a network that doesn't exist in your routing
table. Make sure it's a network that you don't need to be able to connect
to, at least temporarily (this obviously may be tricky if you use default
routes and your users may need to connect to any network), or make the
static route for the address of the dialer interface at the other end.
Point the static route at the dialer interface (not the address, the
interface). E.g. ip route 1.2.3.0 255.255.255.0 dialer1
Ping the address of your route - e.g 1.2.3.4 for the above route. If
you've used a 'fake' address, the ping won't work, but it should bring up
the ISDN link anyway.
This is just basic routing stuff, so I assume it would work with 12.1.
JMcL
---------------------- Forwarded by Jenny Mcleod/NSO/CSDA on 06/02/2001
08:44 am ---------------------------
Elijah Savage <[EMAIL PROTECTED]>@groupstudy.com on 05/02/2001
12:53:32 pm
Please respond to Elijah Savage <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
To: "Cisco (E-mail)" <[EMAIL PROTECTED]>
cc:
Subject: ISDN Dialup Backup
I support allot of customers with dedicated t1's and using isdn dialup
backup. I have had some customers that want to test the dialup backup
without taking the serial link down. I have noticed that on version 12.0 of
the IOS you can take the dial backup command off the interface and ping the
other side of the isdn link and make it come up and dial, this is great for
not having a customer experience any down time. Well I was working on a
1720
on Friday with IOS 12.1 and this does not work. You actually have to take
the serial link down to make the isdn dial. This is very inconvenient when
you are setting up a new customer and you do not know if the isdn line is
in
place. Especially when setting up customers in Texas it seems like it takes
an act of god to have someone at the phone company give you the right
spids.
I guess my question is this, does anyone know if this was a feature Cisco
had in IOS 12.0 and removed it from later versions or if this was a bug in
the 12.0 IOS. I have another engineer at work that swares it is a bug to be
able to take the dial backup command off and make the link dial up.
Any ideas?
Or any other ways I am overlooking in making the backup link come up
without
having to take a customer down?
Elijah
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