Re: ISDN - default route

From: gladston@br.ibm.com
Date: Mon Jun 27 2005 - 20:31:49 GMT-3


Thanks Dave,

I tried it. Does not work for legacy. The first part works (while main
serial is up, bri0/0 is down and default ip route is not on RIB. But when
main serial goes down, I got an encapsulation failure for most of the
destination, because on the remote bri address is solved by dialer map.

I tested it for dialer profile, but I remember I made a mistake. I did not
change backup interface bri0/0 to backup interface dialer 200. I will try
this tomorrow morning.
I think this will work, as dialer 200 will be down, so ip route will be
removed from RIB. And, as dialer is point-to-point, there will be no map
problem.

Cordially,
------------------------------------------------------------------
 Gladston

"DaveW" <kapsi1911@hotmail.com>
27/06/2005 18:33

To
Alaerte Gladston Vidali/Brazil/IBM@IBMBR, <ccielab@groupstudy.com>
cc

Subject
Re: ISDN - default route

Gladston,

Try this. Create a default static route that points to Bri0/0. Then put a
"backup interface bri0/0" configuration on serial/0. Since this will put
bri0/0 standby/down state, I would think the default route would be
suppressed until ser0/0 goes down and the bri0/0 interface is returned to
an
up/up state. I haven't tested it, but I don't see why it wouldn't work.

DAve
----- Original Message -----
From: <gladston@br.ibm.com>
To: <ccielab@groupstudy.com>
Sent: Monday, June 27, 2005 3:31 PM
Subject: ISDN - default route

> How would you configure a default route pointing to ISDN so it is on the
RIB only when the main interface is down?
>
> I tried pointing to physical BRI (ip route ...bri0/0), but I get an
encapsulation failed for the addresses not mapped under bri (dialer map
ip...)
>
> I tried pointing to Dialer (ip route...dialer 200), but the default
route
is always on the RIB in this case.
>
> I tried pointing to the remote IP of the ISDN (ip route 172.16.45.5),
but
the default route is always on the RIB in this case either.
>
> Tested using legacy with this config:
>
> interface BRI0/0
> description testar dialer load-trheshold only on R5
> ip address 172.16.45.6 255.255.255.252
> encapsulation ppp
> dialer map ip 172.16.45.5 name Rack2R4 broadcast 4441111111
> dialer-group 1
> isdn switch-type basic-ni
> isdn spid1 555111111100
> isdn spid2 555222222200
> no cdp enable
> ppp authentication chap
> ppp multilink
>
>
> Testing using dialer profile with this config:
>
> interface BRI0/0
> no ip address
> encapsulation ppp
> dialer pool-member 200
> isdn switch-type basic-ni
> isdn spid1 555111111100
> isdn spid2 555222222200
> ppp authentication chap
> ppp multilink
>
>
> interface Dialer200
> description testar dialer load-trheshold only on R5
> ip address 172.16.45.6 255.255.255.252
> encapsulation ppp
> dialer pool 200
> dialer remote-name Rack2R4
> dialer string 4441111111
> dialer-group 1
> no cdp enable
> ppp authentication chap
> ppp multilink
>
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