376 | Open Shortest Path First (OSPFv2)
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To change OSPFv2 parameters on the interfaces, use any or all of the following commands in 
CONFIGURATION INTERFACE mode. 
Command Syntax Command Mode Usage
ip ospf cost
CONFIG-INTERFACE Change the cost associated with OSPF traffic on 
the interface. 
Cost: 1 to 65535 (default depends on the 
interface speed).
ip ospf dead-interval seconds CONFIG-INTERFACE Change the time interval the router waits before 
declaring a neighbor dead. Configure Seconds 
range: 1 to 65535 (default is 40 seconds).
The dead interval must be four times the hello interval.
The dead interval must be the same on all routers in the OSPF network.
ip ospf hello-interval seconds CONFIG-INTERFACE Change the time interval between the 
hello-packet transmission. 
Seconds range: from 1 to 65535 (default is 10 
seconds).
The hello interval must be the same on all routers in the OSPF network.
ip ospf message-digest-key keyid md5 
key
CONFIG-INTERFACE Use the MD5 algorithm to produce a message 
digest or key, which is sent instead of the key. 
Keyid range: 1 to 255
Key: a character string
Be sure to write down or otherwise record the Key. You cannot learn the key 
once it is configured.
You must be careful when changing this key. 
ip ospf priority number CONFIG-INTERFACE Change the priority of the interface, which is 
used to determine the designated router for the 
OSPF broadcast network.
Number range: 0 to 255 (the default is 1).
ip ospf retransmit-interval seconds CONFIG-INTERFACE Change the retransmission interval between the 
LSAs. 
Seconds range: from 1 to 65535 (default is 5 
seconds).
The retransmit interval must be the same on all routers in the OSPF network.
ip ospf transmit-delay seconds CONFIG-INTERFACE Change the wait period between the link state 
update packets sent out the interface. Seconds 
range: from 1 to 65535 (default is 1 second).
The transmit delay must be the same on all routers in the OSPF network.