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PowerConnect B-Series FCX Configuration Guide 965
53-1002266-01
Clearing OSPF information
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• OSPF area information, including routes received from OSPF neighbors within an area, as well
as routes imported into the area. You can clear area information for all OSPF areas, or for a
specified OSPF area
The OSPF information is cleared dynamically when you enter the command; you do not need to
remove statements from the Dell PowerConnect configuration or reload the software for the
change to take effect.
Clearing OSPF neighbor information
To clear information on the Dell PowerConnect device about all OSPF neighbors, enter the following
command.
PowerConnect#clear ip ospf neighbor
Syntax: clear ip ospf neighbor [ip <ip-addr> | id <ip-addr>]
This command clears all OSPF neighbors and the OSPF routes exchanged with the neighbors in the
Dell PowerConnect OSPF link state database. After this information is cleared, adjacencies with all
neighbors are re-established, and routes with these neighbors exchanged again.
To clear information on the Dell PowerConnect device about OSPF neighbor 10.10.10.1, enter the
following command.
PowerConnect#clear ip ospf neighbor ip 10.10.10.1
This command clears the OSPF neighbor and the OSPF routes exchanged with neighbor 10.10.10.1
in the OSPF link state database in the Dell PowerConnect device. After this information is cleared,
the adjacency with the neighbor is re-established, and routes are exchanged again.
The neighbor router can be specified either by its IP address or its router ID. To specify the neighbor
router using its IP address, use the ip <ip-addr> parameter. To specify the neighbor router using its
router ID, use the id <ip-addr> parameter.
Clearing OSPF topology information
To clear OSPF topology information on the Dell PowerConnect device, enter the following command.
PowerConnect#clear ip ospf topology
Syntax: clear ip ospf topology
This command clears all OSPF routes from the OSPF routing table, including intra-area, (which
includes ABR and ASBR intra-area routes), inter-area, external type 1, external type 2, OSPF default,
and OSPF summary routes.
After you enter this command, the OSPF routing table is rebuilt, and valid routes are recomputed
from the OSPF link state database. When the OSPF routing table is cleared, OSPF routes in the
global routing table are also recalculated. If redistribution is enabled, the routes are imported
again.
Clearing redistributed routes from the OSPF routing table
To clear all routes in the OSPF routing table that were redistributed from other protocols, enter the
following command.
PowerConnect#clear ospf redistribution