Loopback Detection Commands; Table 88: Loopback Detection Commands - Edge-Core ECS2100-10T Reference Manual

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Loopback Detection Commands

The switch can be configured to detect general loopback conditions caused by
hardware problems or faulty protocol settings. When enabled, a control frame is
transmitted on the participating ports, and the switch monitors inbound traffic to
see if the frame is looped back.

Table 88: Loopback Detection Commands

Command Function
loopback-detection Enables loopback detection globally on the switch
or on a specified interface
loopback-detection Specifies the response to take for a detected
action loopback condition
loopback-detection Specifies the interval to wait before releasing an
recover-time interface from shutdown state
loopback-detection Specifies the interval at which to transmit loopback
transmit-interval detection control frames
loopback detection trap Configures the switch to send a trap when a
loopback condition is detected or the switch
recover from a loopback
loopback-detection Manually releases all interfaces currently shut down
release by the loopback detection feature
show loopback- Shows loopback detection configuration settings
detection for the switch or for a specified interface
Usage Guidelines
◆
The default settings for the control frame transmit interval and recover time
may be adjusted to improve performance for your specific environment. The
shutdown mode may also need to be changed once you determine what kind
of packets are being looped back.
◆
General loopback detection provided by the commands described in this
section and loopback detection provided by the spanning tree protocol cannot
both be enabled at the same time. If loopback detection is enabled for the
spanning tree protocol, general loopback detection cannot be enabled on the
same interface.
◆
When a loopback event is detected on an interface or when a interface is
released from a shutdown state caused by a loopback event, a trap message is
sent and the event recorded in the system log.
◆
Loopback detection must be enabled both globally and on an interface for
loopback detection to take effect.
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Mode
GC, IC
GC
GC
GC
GC
PE
PE