RE: OSPF Network type issue (neighboring and not updating)

From: Richard Danu (rdanu@apex3.com)
Date: Wed Jun 18 2003 - 19:42:13 GMT-3


try replacing
int s0.123 point-to-point with int s0.123 multipoint
on router 1.

;)

Richard Danu

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Jeongwoo Park
Sent: Wednesday, June 18, 2003 12:21 AM
To: lab
Subject: OSPF Network type issue (neighboring and not updating)

Hi all,
I am wondering why ospf routering are forming adjacency, but not routing.
Here is the layout;
 
              R3
            / \
          r2 r1
 
It is a hub-spoke topology.
What I am seeing is that r3 is forming adjacency with r2 and r1;
However, r3 can't ping r1's loopback interface.
 
R3;
interface Serial0/0.123 multipoint
 ip address 150.50.123.3 255.255.255.0
 frame-relay map ip 150.50.123.1 301 broadcast
 frame-relay map ip 150.50.123.2 302 broadcast
 frame-relay map ip 150.50.123.3 301 broadcast
 no frame-relay inverse-arp
!
router ospf 1
 router-id 3.3.3.3
 log-adjacency-changes
 network 10.0.0.3 0.0.0.0 area 0
 network 150.50.23.0 0.0.0.7 area 23
 network 150.50.34.0 0.0.0.15 area 34
 network 150.50.123.0 0.0.0.255 area 0
 neighbor 150.50.123.1
 neighbor 150.50.123.2
r2;
interface Serial0/0
 backup delay 0 10
 backup interface BRI0/0
 ip address 150.50.123.2 255.255.255.0
 encapsulation frame-relay
 ip ospf priority 0
 no fair-queue
 frame-relay map ip 150.50.123.1 203
 frame-relay map ip 150.50.123.2 203
 frame-relay map ip 150.50.123.3 203 broadcast
 no frame-relay inverse-arp
r1;
interface Loopback0
 ip address 10.0.0.1 255.255.255.255
 ip ospf network point-to-point
!
interface Serial0.123 point-to-point
 ip address 150.50.123.1 255.255.255.0
 ip ospf hello-interval 30
 ip ospf priority 0
 frame-relay interface-dlci 103
!
router ospf 1
 router-id 1.1.1.1
 log-adjacency-changes
 network 10.0.0.1 0.0.0.0 area 0
==========================================
If I changed the network type to;
R3:point to multipoint
R2:point to multipoint
R3:point to multipoint ( or ip os hello 30 ),
Then, it would work. I tried and worked.
 
I guess it comes down to the ospf network type issue.
Can someone explain why neighboring is forming, but not route-updating is
not taking place?
 
Thanks,
 
JP



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