Skip-Loopback-Test - Cisco Catalyst 3550 Command Reference Manual

skip-loopback-test

skip-loopback-test
Use the skip-loopback-test interface configuration command to configure the switch to omit the
loopback test on an interface during the switch power-on self-test (POST).
Syntax Description
This command has no arguments or keywords.
Defaults A loopback test is performed on all interfaces during POST.
Command Modes Interface configuration
Command History Release
12.2(37)SE
Usage Guidelines Use this command in rare situations when an interface fails POST but the switch hardware is known to
be fully functional as is the case when the Gigabit port of a Catalyst 3550 switch with inline power
(WS-C3550-25-PWR) is connected to the Gigabit port of a Catalyst 4000 series switch with Supervisor
Model WS-X4516 running Cisco IOS release 12.2(18)EW or 12.2(20)EW. This configuration is known
to experience lost loopback packets when the switch boots up and entering this command on the interface
allows it to remain up.
Catalyst 3550 Multilayer Switch Command Reference
2-506
skip-loopback-test
no skip-loopback-test
Modification
This command was introduced.
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
OL-8566-01