What are you trying to backup here? I don't see any routing. Start with a
working primary first and I can probably give you suggestions for a
solution.
Roughly, what you need are two static routes with different weights so the
primary is favored, and the backup is much more costlier, or, set the dialer
as the default route with a static 0.0.0.0 pointing to the primary, that
way, when the primary disappears, the static leaves the table and the dialer
goes up. remember to write an access list on the dialer to prevent dialing
for RIP updates, etc. depending on what type of traffic you have traversing
the router.
-Erik
----- Original Message -----
From: "Clue Less" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, September 21, 2000 10:25 AM
Subject: isdn backup
| Greetings all,
|
| Got a question on routing with ISDN backup. Could
| someone shed some light on how to properly implement
| the backup command with routing?
|
| I'm using the backup command, and ip unnumber for both
| primary and backup interfaces.
|
| int loop 0 R3 int s0/0---------primary------int s2 R5
| int loop 0 (5.0.0.5)
| int di1-----------backup-------int di1
|
| Below is config.
|
| What static route can I use to complete the routing to
| the remote end? Because unnumbered addresses is use,
| I'm unsure what the static route should look like.
| The only thing I can think of is using floating
| static, but that sort of defeat the purpose of the
| backup command.
|
|
| ClueLess
|
| !
| hostname r3
| !
| interface Loopback0
| ip address 3.0.0.3 255.255.255.0
| no ip directed-broadcast
| !
| interface Serial0/0
| backup interface Dialer1
| ip unnumbered Loopback0
| no ip directed-broadcast
| clockrate 64000
| !
| interface BRI0/0
| no ip address
| no ip directed-broadcast
| encapsulation ppp
| dialer pool-member 3
| isdn switch-type basic-ts013
| isdn answer1 33333333:3
| ppp authentication chap
| !
| interface Dialer1
| ip unnumbered Loopback0
| no ip directed-broadcast
| encapsulation ppp
| dialer remote-name r5
| dialer string 55555555:5
| dialer pool 3
| dialer-group 1
| ppp authentication chap
| !
| dialer-list 1 protocol ip permit
|
| r3#sh ip route
| Codes: C - connected, S - static, I - IGRP, R - RIP, M
| - mobile, B - BGP
| D - EIGRP, EX - EIGRP external, O - OSPF, IA -
| OSPF inter area
| N1 - OSPF NSSA external type 1, N2 - OSPF NSSA
| external type 2
| E1 - OSPF external type 1, E2 - OSPF external
| type 2, E - EGP
| i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS
| level-2, * - candidate default
| U - per-user static route, o - ODR
|
| Gateway of last resort is not set
|
| 3.0.0.0/24 is subnetted, 1 subnets
| C 3.0.0.0 is directly connected, Loopback0
| r3#
|
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