Users Guide

Usage Information
To enable OSPF on an interface, the network area command must include, in its range of addresses, the
primary IP address of an interface.
NOTE: An interface can be attached only to a single OSPF area.
If you delete all the network area commands for Area 0, the show ip ospf command output does not list Area
0.
passive-interface
Suppress both receiving and sending routing updates on an interface.
Syntax
passive-interface {default | interface}
To enable both the receiving and sending routing, use the no passive-interface interface command.
To return all OSPF interfaces (current and future) to active, use the no passive-interface default
command.
Parameters
default Enter the keyword default to make all OSPF interfaces (current and future) passive.
interface Enter the following keywords and slot/port or number information:
• For Port Channel groups, enter the keywords port-channel then a number. The
range is from 1 to 128.
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then
the slot/port information.
•
For a VLAN, enter the keyword vlan then a number from 1 to 4094.
Command Modes ROUTER OSPF
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.19.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
Although the passive interface does not send or receive routing updates, the network on that interface is still
included in OSPF updates sent using other interfaces.
The default keyword sets all interfaces as passive. You can then congure individual interfaces, where
adjacencies are desired, using the no passive-interface interface command. The no form of this
command is inserted into the conguration for individual interfaces when the
no passive-interface
interface command is issued while passive-interface default is congured.
This command behavior has changed as follows:
passive-interface interface
• The previous no passive-interface interface is removed from the running conguration.
• The ABR status for the router is updated.
938 Open Shortest Path First (OSPFv2 and OSPFv3)