Reference Guide

Version 7.5.1.0 Introduced on the C-Series.
pre-Version
6.1.1.1
Introduced on the E-Series.
passive-interface
Disable (suppress) sending routing updates on an interface.
S4820T
Syntax
passive—interface interface
To enable sending routing updates on an interface, use the no passive-interface
interface command.
Parameters
interface
Enter the following keywords and slot/port or number information:
• For a Gigabit Ethernet interface, enter the keyword
GigabitEthernet then the slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
• For a 40-Gigabit Ethernet interface, enter the keyword
fortyGigE then the slot/port information.
• For a Port Channel interface, enter the keywords port-
channel
then a number. The range is from 1 to 128.
• For a VLAN, enter the keyword vlan then a number from 1 to
4094.
Defaults Enabled, that is sending of routing updates are enabled by default.
Command Modes
ROUTER OSPF for OSPFv2
ROUTER OSPFv3 for OSPFv3
Command History
Version 9.1.(0.0) Introduced support for OSPFv3 on the S4810 and Z9000.
Version 8.3.19.0 Introduced on the S4820T.
Version 7.8.1.0 Added support for the C-Series.
Version 7.4.1.0 Introduced on the E-Series.
Usage
Information
By default, no interfaces are passive . Routing updates are sent to all interfaces on which the
routing protocol is enabled.
If you disable the sending of routing updates on an interface, the particular address prefix
continues to be advertised to other interfaces, and updates from other routers on that interface
continue to be received and processed.
OSPFv3 for IPv6 routing information is not sent or received through the specified router
interface. The specified interface address appears as a stub network in the OSPFv3 for IPv6
domain.
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