passive-interface
Use this command to suppress routing updates on all interfaces or on a specified interface, which puts the interfaces into passive mode.
To advertise passive prefixes in LSP, an interface must be configured with ip router isis when using "passive-interface" command. If interface is not configured with isis instance "passive-interface IFNAME" command must be used to add that interface as passive. Enabling passive interface on an ISIS enabled interface disables ISIS routing updates on the interface and makes the interface passive.
Use the no parameter with this command to remove interfaces from passive mode
Note: The command passive-interface IFNAME disable is used to make a particular interface active after the passive-interface command (with no parameters) has set all interfaces as passive.
Command Syntax
passive-interface
passive-interface IFNAME
passive-interface IFNAME disable
no passive-interface
no passive-interface IFNAME
no passive-interface IFNAME disable
Parameters
IFNAME
Interface name. If this parameter is omitted, then all interfaces become passive or active.
disable
Disable passive interface.
Command Mode
Router mode
Examples
The following suppresses routing updates on a specified interface.
#configure terminal
(config)#router isis 100
(config-router)#passive-interface
(config-router)#passive-interface eth0 disable
Last modified date: 08/28/2023