Users Guide

ip ospf passive
Configures an interface as a passive interface and suppresses both receiving and sending routing updates to the passive
interface.
Syntax
ip ospf passive
Parameters None
Default Not configured
Command Mode INTERFACE
Usage
Information
You must configure the interface before setting the interface to Passive mode. The no version of the this
command disables the passive interface configuration.
NOTE: As loopback interfaces are implicitly passive, the configuration to suppress sending and
receiving of OSPF routing updates does not take effect on the loopback interfaces. However,
network information corresponding to these loopback interfaces is still announced in OSPF LSAs
that are sent through other interfaces configured 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
702 Layer 3