Install guide

42 OSPF: Support for Passive Interfaces Release Note
Software Version 2.7.4
C613-10444-00 REV A
OSPF: Support for Passive Interfaces
OSPF passive interfaces are interfaces which do not operate as an OSPF
interface, but their networks are added to the router LSA as a stub network.
They do not exchange Hello packets or state transitions and have no OSPF
neighbours.
You can specify whether or not all interfaces are treated as passive by default.
Ghost interfaces (those IP interface which are not added to the OSPF
configuration) can be treated as passive interfaces if:
■ OSPF is configured so that interfaces are passive by default, and
■ there is a range defined on an area which includes the ghost interface's IP
network.
Modified Commands
add ospf interface
Syntax ADD OSPF INTerface=interface AREa={BAckbone|area-number}
[PASSive={ON|OFF|YES|NO|True|False}]
The default for passive is off.
set ospf
Syntax SET OSPF
[PASSiveinterfacedefault={ON|OFF|YES|NO|True|False}]
The passiveinterfacedefault parameter specifies whether all OSPF interfaces
other than those added by the add ospf interface command act as passive
interfaces or not. If on, yes or true is specified, interfaces that are not added
using the add ospf interface command will have a stub network link added to a
router LSA, as long as the OSPF routing process can identify the area to which
the interface belongs. This is done by finding an area's range that includes the
address of the interface. If such a range is found, that range's area becomes the
area for the passive interface. If off, no or false is specified, then non-OSPF
interfaces will not act as passive interfaces. The default is off.
set ospf interface
Syntax SET OSPF INTerface=interface AREa={BAckbone|area-number}
[PASSive={ON|OFF|YES|NO|True|False}]