ISIS over ISDN

From: Sharma, Mohit (mohit.sharma@hp.com)
Date: Thu May 13 2004 - 14:09:25 GMT-3

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Hello All,

I am trying a lab to configure ISIS over ISDN, but whatever I do I am
not able to bring up the adjacency for the two routers. The ISDN dials
without any problems but the router R5 (below) is giving encapsulation
failure in spite of the dialer map and the dialer list statements.-

Rack1R5#interface BRI0
 ip address 132.1.45.5 255.255.255.248
 ip router isis
 encapsulation ppp
 dialer map clns 49.0044.0001.0001.0004.00 name ROUTER4 broadcast 237340
 dialer-group 1
 isdn switch-type basic-net3
 ppp callback request
 ppp chap hostname ROUTER5
 clns router isis
End

The debug-
01:28:44: BR0 DDR: clns_is, 1499 bytes, outgoing interesting (clns_is
PERMIT)
01:28:44: BR0 DDR: sending broadcast to clns 49.0044.0001.0001.0004.00
-- failed, not connected
01:28:44: ISIS-Adj: Encapsulation failed on serial IIH (BRI0)
Rack1R5(config)#
01:28:45: %ISDN-6-CONNECT: Interface BRI0:2 is now connected to unknown
Rack1R5(config)#
01:28:51: ISIS-Adj: Rec serial IIH from *PPP* (BRI0), cir type L2, cir
id 00, length 1499
01:28:51: ISIS-Adj: rcvd state DOWN, old state INIT, new state INIT
01:28:51: ISIS-Adj: Action = GOING UP, new type = L2
Rack1R5(config)#^Z
Rack1R5#u
01:28:54: BR0 DDR: clns_is, 1499 bytes, outgoing interesting (clns_is
PERMIT)
01:28:54: BR0 DDR: sending broadcast to clns 49.0044.0001.0001.0004.00
-- failed, not connected
01:28:54: ISIS-Adj: Encapsulation failed on serial IIH (BRI0)

As you can see from the debug above ISDN works fine and this router also
reciever IIH on the Bri port and also consider isis as interesting but
still somehow gives the enacp failure. The config for other side is -
ack1R4# sh run int bri 0
Building configuration...

Current configuration : 342 bytes
!
interface BRI0
 ip address 132.1.45.4 255.255.255.248
 ip router isis
 encapsulation ppp
 dialer idle-timeout 0
 dialer map clns 49.0035.0001.0001.0005.00 name ROUTER5 class dial
broadcast 230897
 isdn switch-type basic-net3
 ppp callback accept
 ppp authentication chap
 ppp chap hostname ROUTER4
 ppp chap refuse
 clns router isis
End

Would really appreciate if someone can point me in the right direction.
Many Thanks,

Mohit.

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