From: Mengdi Cao (xianglingzj@gmail.com)
Date: Sun Aug 20 2006 - 06:30:59 ART
This is about IEWB Lab #1 Q 3.2
Due to the limitation of my equipment I use back-to-back serial link to
simulate the LAN connection between R4 and R5. The topology looks like
R4 ---(FR) --- R5
....\............./
.....--(PPP)--
The IP adress are the same as defined in the work book.
After I configured the Q 3.2 with the virtual link enabled. I found the
Virtual link is down :
R5#sh ip ospf v
Virtual Link OSPF_VL1 to router 150.1.4.4 is down
Run as demand circuit
DoNotAge LSA allowed.
Transit area 0.0.0.45, Cost of using 65535
Transmit Delay is 1 sec, State DOWN,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
R5#
So that the PPP link can not backup the FR link in area 0.
Checked the link S1 got no problem as the OSPF neighbour established:
R5#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
150.1.3.3 0 FULL/DROTHER 00:00:03 183.1.0.3 Serial0
150.1.4.4 0 FULL/DROTHER 00:00:03 183.1.0.4 Serial0
150.1.4.4 0 FULL/DROTHER 00:00:03 183.1.45.4 Serial1
R5#
My OSPF config is shown below
R5#sh run | b router ospf
router ospf 1
router-id 150.1.5.5
log-adjacency-changes
area 0.0.0.45 authentication message-digest
area 0.0.0.45 virtual-link 150.1.4.4
network 150.1.5.5 0.0.0.0 area 0
network 183.1.0.0 0.0.0.255 area 0
network 183.1.45.0 0.0.0.255 area 0.0.0.45
!
R4#sh run | b router ospf 1
router ospf 1
router-id 150.1.4.4
log-adjacency-changes
area 0.0.0.45 authentication message-digest
area 0.0.0.45 virtual-link 150.1.5.5
network 150.1.4.4 0.0.0.0 area 0
network 183.1.0.0 0.0.0.255 area 0
network 183.1.45.0 0.0.0.255 area 0.0.0.45
network 183.1.46.0 0.0.0.255 area 0.0.0.46
Can someone help me to figure out where is the problem? Thanks.
This archive was generated by hypermail 2.1.4 : Fri Sep 01 2006 - 15:41:57 ART