Connectivity Guide

NOTE: As loopback interfaces are implicitly passive, the conguration to suppress sending and receiving
of OSPF routing updates does not take eect on the loopback interfaces. However, network information
corresponding to these loopback interfaces is still announced in OSPF LSAs that are sent through other
interfaces congured for OSPF.
Example
OS10(conf-if-eth1/1/6)# ip ospf passive
Supported Releases 10.2.0E or later
ip ospf priority
Sets the priority of the interface to determine the DR for the OSPF network.
Syntax
ip ospf priority number
Parameters number — Enter a router priority number, from 0 to 255.
Default 1
Command Mode INTERFACE
Usage Information When two routers attached to a network attempt to become the DR, the one with the higher router priority takes
precedence. The no version of this command resets the value to the default.
Example
OS10(conf-if-eth1/1/6)# ip ospf priority 4
Supported Releases 10.2.0E or later
ip ospf retransmit-interval
Sets the retransmission time between lost LSAs for adjacencies belonging to the interface.
Syntax
ip ospf retransmit-interval seconds
Parameters seconds — Enter a value in seconds as the interval between retransmission, from 1 to 3600.
Default 5 seconds
Command Mode INTERFACE
Usage Information Set the time interval to a number large enough to avoid unnecessary retransmission. The no version of this
command resets the value to the default.
Example
OS10(conf-if-eth1/1/6)# ip ospf retransmit-interval 20
Supported Releases 10.2.0E or later
ip ospf transmit-delay
Sets the estimated time required to send a link state update packet on the interface.
Syntax
ip ospf transmit-delay seconds
Parameters seconds — Set the time in seconds required to send a link-state update, from 1 to 3600.
Default 1 second
Command Mode INTERFACE
Usage Information When you set the ip ospf transmit-delay value, take into account the transmission and propagation
delays for the interface. The no version of this command resets the value to the default.
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