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ISDN IP Routing !!!

I have three sites; Sites A, B & C. Sites B and C both have the a Cisco 1720 with a BRI port (one 128K ISDN link attached) will respectively dial to Site A which has a 2620 router with two BRI ports as required.

Site A:

Loopback0 - 10.10.68.1

E0/0 - 10.10.69.1

Bri0/0 - no ip address

Bri0/1 - no ip address

L1--> RouterA(config)#username RouterB password 0 ciscoisdn

L2--> RouterA(config)#username RouterC password 0 ciscoisdn

L3--> RouterA(config)#int bri0/0

L4--> RouterA(config-if)#dialer pool-member 1

L5--> RouterA(config-if)#int dialer1

L6--> RouterA(config-if)#dialer pool 1

L7--> RouterA(config)#int bri0/1

L8--> RouterA(config-if)#dialer pool-member 2

L9--> RouterA(config-if)#int dialer2

L10--> RouterA(config-if)#dialer pool 2

.

.

.

L11--> RouterA(config)#ip route 10.10.18.1 255.255.255.255 dialer1

L12--> RouterA(config)#ip route 10.10.23.1 255.255.255.255 dialer2

Q1. Are L1 & L2 necessary for RouterB and RouterC to dial in (Using PPP authentication) ?

Q2. Are L11 & L12 routing correctly ?

Site B:

Loopback0 - 10.10.18.1

E0/0 - 10.10.19.1

Bri0/0 - no ip address

L1--> RouterB(config)#username RouterA password 0 ciscoisdn

L2--> RouterB(config)#int bri0/0

L3--> RouterB(config-if)#dialer pool-member 1

L4--> RouterB(config-if)#int dialer1

L5--> RouterB(config-if)#dialer pool 1

.

.

.

L6--> RouterB(config)#ip route 10.10.68.1 255.255.255.255 dialer1

Q1. Is L6 routing correctly ?

Site C:

Loopback0 - 10.10.23.1

E0/0 - 10.10.24.1

Bri0/0 - no ip address

L1--> RouterB(config)#username RouterA password 0 ciscoisdn

L2--> RouterC(config)#int bri0/0

L3--> RouterC(config-if)#dialer pool-member 1

L4--> RouterC(config-if)#int dialer1

L5--> RouterC(config-if)#dialer pool 1

.

.

.

L6--> RouterC(config)#ip route 10.10.68.1 255.255.255.255 dialer1

Q1.Is L6 routing correctly ?

Please help out.

1 REPLY
Cisco Employee

Re: ISDN IP Routing !!!

You don't need to use dialer profile for that config at site B &C..It can get complicated..Config looks fine though..

Here is the url which discuss similar kind of scenerio..

http://www.cisco.com/warp/public/793/access_dial/ddr_dialer_profile.html

Also you can use dialer maps too.

http://www.cisco.com/warp/public/129/config-bri-map.html

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