Extreme Networks Loopback detection on ports
Loopback Detection
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.
To enable or disable loopback detection, use the following commands:
enable lbdetect port <portlist> [retry-timeout<seconds>]
disable lbdetect port <portlist>
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