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state NFULL priority 0
DR 150.1.1.1 BDR 0.0.0.0
last hello 66289 last exch 49607
Displayed information Explanation
interface ip The IP address of an interface in the
current layer3 switch.
area id The id of the area for the interface
router id The ID of the neighbor layer3 switch.
router ip addr The IP address of the interface in the
neighbor layer3 switch.
state Link-state status
priority Priority.
DR ID of the designated layer3 switch.
BDR ID of the backup designated layer3 switch.
last hello The last HELLO packet.
last exch The last packet exchanged.
（8）show ip ospf routing
The “show ip ospf routing” command can be used to display information about the OSPF
route table.
For example, displayed information can be:
Switch#show ip ospf routing
AS internal routes:
Destination Area Cost Dest Type Next Hop ADV rtr
11.11.1.0 1 1 0 11.11.1.1 14.14.14.1
11.11.4.0 0 1 0 11.11.4.1 11.11.4.2
11.11.2.0 1 2 0 11.11.1.2 11.11.2.1
11.11.3.0 1 11 0 11.11.1.3 14.14.14.1
AS external routes:
Destination Cost Dest Type Next Hop ADV rtr
Displayed information Explanation
AS internal routes Autonomous system interior route.
AS external routes Autonomous system exterior route.
Destination Destination network segment
Area Area number.
Cost Cost value.
Dest Type Route Type
Next Hop Next hop
ADV rtr Advertise the interface address of the
layer3 switch.
（9）show ip ospf virtual-links
The “show ip ospf virtual-links” command can be used to display information about the
OSPF virtual link.