Table 122: Loopback Detection Commands - Edge-Core ECS3510-28T Management Manual

31
L
OOPBACK
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 122: 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
transmit-interval loopback detection control frames
loopback detection Configures the switch to send a trap when a
trap loopback condition is detected or the switch
recover from a loopback
loopback-detection Manually releases all interfaces currently shut
release down by the loopback detection feature
show Shows loopback detection configuration settings
loopback-detection for the switch or for a specified interface
U G
SAGE UIDELINES
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 command 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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D
ETECTION
C
OMMANDS
Mode
GC, IC
GC
GC
GC
GC
PE
PE