- Alcatel Internetworking, Inc. Switch Troubleshooting Guide

Troubleshooting IP Routing OSPF Troubleshooting
OmniSwitch Troubleshooting Guide September 2005 page 12-19
OSPF Troubleshooting
The following commands are used to troubleshoot OSPF failures:
show ip ospf interface x.y.z.
show ip ospf area 2.2.2.2
show ip ospf
show ip ospf neighbor
//state is FULL (connect to DR or BDR) or 2 Ways (router to router)
show ip ospf interface //DR or BDR
show ip ospf lsdb //within area
A debug-level of 50 for detail and 75 for more detail.
7700-> ip ospf debug-type ?
^
WARNING VLINK TM TIME SUMMARY STATE SPF SETUP
SEND RESTART REDIST RECV RDB MIP LSDB INTF INFO
HELPER HELLO FLOOD ERROR DBEXCH AUTH AREA ALL
AGE
(IP Routing & Multicast Command Set)
To debug OSPF:
1) show ip ospf debug //level 0 is disabled
2) ip ospf debug-level 0
3) ip ospf debug-type warning
4) ip ospf debug-type error
5) ip ospf debug-type state
6) ip ospf debug-level (50 detail; 75 more detail)
7) ip ospf debug-level 0 //to stop
Verify the required parameters for an OSPF interface using the show ip ospf interface command:
-> show ip ospf interface 10.40.110.2
VLAN Id = 110,
Interface IP Address = 10.40.110.2,
Interface IP Mask = 255.255.255.0,
Admin Status = Disabled,
Operational Status = Up,
OSPF Interface State = Down,
Interface Type = Broadcast,
Area Id = 0.0.0.5,
Designated Router IP Address = 0.0.0.0,
Designated Router RouterId = 0.0.0.0,
Backup Designated Router IP Address = 0.0.0.0,
Backup Designated Router RouterId = 0.0.0.0,
MTU (bytes) = 1492,
Metric Cost = 1,
Priority = 1,
Hello Interval (seconds) = 10,
Transit Delay (seconds) = 1,
Retrans Interval (seconds) = 5,
Dead Interval (seconds) = 40,
Poll Interval (seconds) = 120,
Link Type = Broadcast,
Authentication Type = none,
# of Events = 0,