Enable Lbdetect Port - Extreme Networks ExtremeWare Command Reference Manual

Commands for Configuring Slots and Ports on a Switch

enable lbdetect port

enable lbdetect port <portlist> [retry-timeout<seconds>]
Description
Enables the system to detect loops between ports. If a port is looped, it disables the port. Every n
seconds, it re-enables the port and tries again, unless "none" is specified
Syntax Description
portlist Specifies one or more ports or slots and ports to be grouped to the master port. On a modular
switch, can be a list of slots and ports. On a stand-alone switch, can be one or more port
numbers. May be in the form 1, 2, 3-5, 2:*, 2:5, 2:6-2:8.
retry-timeout Specifies a time in seconds to check for loops on the ports.
Default
Disabled
Usage Guidelines
Each port may enable loop detection. This optional feature detects that a port has been looped back to
the local system. If a loopback is detected, the port is disabled. Note that loopbacks may exist between
different ports. The feature will disable any port that both has the feature enabled, and receives an
LACP message that was sent from the local system.
If no timeout is specified, the port is disabled permanently if there is a loop detected. Otherwise, the
port is periodically re-enabled, and tested for loops every N seconds.
Example
The following example enables loopback detection on ports 9 through 12:
enable lbdetect port 9-12
History
This command was first available in ExtremeWare 7.0.0.
This command was added to the Summit "e" series of switches in ExtremeWare 7.3e.
Platform Availability
This command is available on all platforms.
306 ExtremeWare 7.5 Command Reference Guide