Technical Documentation

Disabling a Physical Interface

You can disable a physical interface, marking it as being down, without removing the interface configuration statements from the configuration. To do this, include the disable statement at the [edit interfaces interface-name] hierarchy level:

[edit interfaces interface-name]disable;

Note: When you use the disable statement at the edit interfaces hierarchy level, depending on the PIC type, the interface might or might not turn off the laser. Older PIC transceivers do not support turning off the laser, but newer Gigabit Ethernet PICs with SFP and XFP transceivers do support it and the laser will be turned off when the interface is disabled.

Warning: Do not stare into the laser beam or view it directly with optical instruments even if the interface has been disabled.

Example: Disabling a Physical Interface

Disable a physical interface:

[edit interfaces]so-1/1/0 {mtu 8000;clocking internal;encapsulation ppp;sonet-options {fcs 16;}unit 0 {family inet {address 172.16.0.0/12 {destination 172.16.0.4;}}}}[edit interfaces]user@host# set so-1/1/0 disable[edit interfaces]user@host# show so-1/1/0so-1/1/0 {disable;# Interface is marked as disabledmtu 8000;clocking internal;encapsulation ppp;sonet-options {fcs 16;}unit 0 {family inet {address 172.16.0.0 {destination 172.16.0.3;}}}}

Published: 2010-01-22