Alcatel Carrier Internetworking Solutions 6800 User Manual
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
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
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
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,
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,