Intrsting ISDN problem

From: Adwait Tare (adwait_tare@xxxxxxxxx)
Date: Mon May 08 2000 - 16:48:23 GMT-3


   

Two routers are connected to each other isdn BRI. No
fancy configs at all ... just trying to see if the
adjacency gets established...

The configs are as follows:

Rtr-1>interface BRI0/0
 ip address 212.1.22.161 255.255.255.240
 encapsulation ppp
 no logging event subif-link-status
 isdn spid1 610955201101
 isdn spid2 610955201201
 dialer idle-timeout 900
 dialer map ip 212.1.22.162 broadcast 9552021
 dialer-group 1
 no fair-queue
 ppp multilink
 hold-queue 75 in

Rtr-2>interface BRI0/0
 ip address 212.1.22.162 255.255.255.240
 encapsulation ppp
 isdn spid1 610955202101
 isdn spid2 610955202201
 dialer idle-timeout 900
 dialer map ip 212.1.22.161 broadcast 9552011
 dialer-group 1
 no fair-queue
 ppp multilink
 hold-queue 75 in

The output of 'sh ip ospf int bri 0/0' for each router
is as follows:

Rtr-1>sh ip ospf int bri 0/0
BRI0/0 is up, line protocol is up (spoofing)
  Internet Address 212.1.22.161/28, Area 0
  Process ID 1, Router ID 200.100.100.137, Network
Type POINT_TO_POINT, Cost: 1562
  Transmit Delay is 1 sec, State POINT_TO_POINT,
  Timer intervals configured, Hello 10, Dead 40, Wait
40, Retransmit 5
    Hello due in 00:00:05
  Neighbor Count is 0, Adjacent neighbor count is 0
  Suppress hello for 0 neighbor(s)

Rtr-2>sh ip ospf int bri 0/0
BRI0/0 is up, line protocol is up (spoofing)
  Internet Address 212.1.22.162/28, Area 0
  Process ID 1, Router ID 200.100.100.73, Network Type
POINT_TO_POINT, Cost: 1562
  Transmit Delay is 1 sec, State POINT_TO_POINT,
  Timer intervals configured, Hello 10, Dead 40, Wait
40, Retransmit 5
    Hello due in 00:00:02
  Neighbor Count is 1, Adjacent neighbor count is 0
  Suppress hello for 0 neighbor(s)

-----------------------------------------------------

These routers are connected to each other over BRI ..
The PPP is getting established successfully, but the
neighbour relationship over this BRI interfaces (which
are point-to-point ospf interfaces) does not form. You
can see in the output of the 'sh ip ospf int' that
only Rtr-2 finds a neighbor but Rtr-1 does not find
the neighbor.

What could be the possible cause.



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