IP Routing Features 
Configuring OSPF 
Hello Interval 
Configured hello interval for this interface. 
Rtr Dead Interval 
Configured router dead interval for this interface. 
Designated 
Router 
IP address of the router that has been elected designated 
router on this interface. 
Backup Desig. Rtr 
IP address of the router that has been elected backup desig-
nated router on this interface. 
Events 
Number of times the interface state has changed. 
This Field...  Displays... 
If you issue a show ip ospf interface vlan <vlan-id> command, the information 
will be the same as shown in the previous table, but for the primary IP address 
on the indicated VLAN. 
Displaying OSPF Link State Information 
To display OSPF link state information, enter show ip ospf link-state at any CLI 
level. When you enter this command, the switch displays an output similar to 
the following: 
OSPF Link State Database for Area 0.0.0.0 
Advertising
LSA Type  Link State ID  Router ID  Age  Sequence #  Checksum 
---------- --------------- --------------- ---- ----------- ----------
Router  10.0.8.32  10.0.8.32  65  0x80000281  0x0000a7b6 
Router  10.0.8.33  10.0.8.33  1638 0x80000005  0x0000a7c8 
Network  10.3.2.37  10.0.8.37  1695 0x80000006  0x00000443 
Summary  10.3.16.0  10.0.8.33  1638 0x80000007  0x0000c242 
Summary  10.3.16.0  10.0.8.35  1316 0x80000008  0x0000aa58 
Summary  10.3.17.0  10.0.8.33  1638 0x8000027b  0x0000becf 
Summary  10.3.17.0  10.0.8.35  1316 0x80000008  0x0000a957 
AsbSummary 10.0.8.36  10.0.8.33  1412 0x80000002  0x00002cba 
OSPF Link State Database for Area 10.3.16.0 
Advertising
LSA Type  Link State ID  Router ID  Age  Sequence #  Checksum 
---------- --------------- --------------- ---- ----------- ----------
Router  10.0.8.33  10.0.8.33  1727 0x8000027e  0x0000d53c 
Router  10.0.8.34  10.0.8.34  1420 0x80000283  0x0000de4f 
Network  10.3.16.34  10.0.8.34  1735 0x80000005  0x00001465 
Figure 11-16.Example of Show IP OSPF Link-State Output 
11-60