Dell Command Line Reference Guide for the S4048–ON System 9.14.2.5

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passive-interface

Suppress both receiving and sending routing updates on an interface.

S4048–ON

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 a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port[/subport] information.
  • For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port information.
  • For a VLAN, enter the keyword vlan then a number from 1 to 4094.
Command Modes
ROUTER OSPF
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.10(0.1)
Introduced on the S6010-ON and S4048T-ON.
9.10(0.0)
Introduced on the S3148.
9.10(0.0)
Introduced on the S6100-ON.
9.8(2.0)
Introduced on the S3100 series.
9.8(1.0)
Introduced on the Z9100-ON.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.7(0.0)
Introduced on the S6000-ON.
9.2(1.0)
Introduced on the Z9500.
9.0.2.0
Introduced on the S6000.
8.3.19.0
Introduced on the S4820T.
8.3.11.1
Introduced on the Z9000.
8.3.7.0
Introduced on the S4810.
7.8.1.0
Added support for Multi-Process OSPF.
7.6.1.0
Introduced on the S-Series.
7.5.1.0
Introduced on the C-Series.
7.4.1.0
Modified to include the keyword default.
pre- 6.1.1.1
Introduced on the E-Series.
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 configure individual interfaces, where adjacencies are desired, using the no passive-interface interface command. The no form of this command is inserted into the configuration for individual interfaces when the no passive-interface interface command is issued while passive-interface default is configured.

This command behavior has changed as follows:

passive-interface interface
  • The previous no passive-interface interface is removed from the running configuration.
  • The ABR status for the router is updated.
  • Save passive-interface interface into the running configuration.
passive-interface default
  • All present and future OSPF interfaces are marked as passive.
  • Any adjacency is explicitly terminated from all OSPF interfaces.
  • All previous passive-interface interface commands are removed from the running configuration.
  • All previous no passive-interface interface commands are removed from the running configuration.
no passive-interface interface
  • Remove the interface from the passive list.
  • The ABR status for the router is updated.
  • If passive-interface default is specified, then save no passive-interface interface into the running configuration.
No passive-interface default
  • Clear everything and revert to the default behavior.
  • All previously marked passive interfaces are removed.
  • May update ABR status.

On configuring suppression using the passive-interface command, the state of the OSPF neighbor does not change to INIT; instead, the state of the OSPF neighbor changes to DOWN after the dead-timer expires.


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