Alcatel OmniSwitch 6624 Troubleshooting Manual page 197

Troubleshooting IP Routing
External LSDB Limit
Exit Overflow Interval
# of SPF calculations done
# of Incr SPF calculations done
# of Init State Nbrs
# of Exchange State Nbrs
# of Full State Nbrs
# of attached areas
# of Active areas
# of Transit areas
# of attached NSSAs
Since, OSPF is enabled globally so enable OSPF on the interface.
-> ip ospf interface 10.40.110.2 status enable
Verify the neighbor relationship between the two routers using the show ip ospf neighbor CLI command.
-> show ip ospf neighbor
IP Address
----------------+----------------+----------------+----+-------+--------
10.40.110.3
The neighbor relationship is full. Neighbor relationship can be one of the following six states:
Init
2way
Exstart
Exchange
Load
Full
To view the DR and BDR for this interface, the following command can be used:
-> show ip ospf interface
IP
Address
----------------+----------------+----------------+----+--------+------+-------
10.40.110.2
So, the above command shows that 10.40.110.3 is the Designated Router and 10.40.110.2 is the Backup
Designated Router. So, if there were two more routers in this subnet then they should form full adjacency
with these routers but between themselves they will have 2way relationship. As, all the routes are to be
synchronized by the DR and the BDR.
To look at the Link State Database use the show ip ospf lsdb CLI command:
-> show ip ospf lsdb
Area Id
----------------+-------+----------------+----------------+------------+-----
0.0.0.0
OmniSwitch Troubleshooting Guide
= 0,
= 0,
= 0,
= 0,
= 0,
= 0,
= 0,
= 0,
= 0,
= 0,
= 0
Area Id
0.0.0.5
Initialization State
The two routers are able to receive hello packets from each other. This
will also be the state when neighbor adjacency is formed with a router
other than DR and BDR
Starting the synchronization process
Exchanging the database
Performing SPF calculations and loading routes in route table
Neighbors are completely synchronized
DR
Address
10.40.110.3
Type LS Id
rtr 192.168.50.4
September 2005
Router Id Vlan
192.168.50.3 110
Backup DR
Address Vlan
10.40.110.2 110
Orig Router-Id
192.168.50.4
OSPF Troubleshooting
State Mode
Full Master
Admin Oper
Status Status State
enabled up BDR
SeqNo Age
0x80000002 10
page 12-21