LevelOne GEL-2670 User Manual page 131

Loopback detection must be enabled both globally and on an interface
◆
for loopback detection to take effect.
P
ARAMETERS
These parameters are displayed:
Global Configuration
Enable Loop Protection – Enables loopback detection globally on the
◆
switch. (Default: Disabled)
Loopback detection must be enabled globally for the switch and
enabled for a specific port for this function to take effect.
Transmission Time – The transmission interval for loopback detection
◆
control frames. (Range: 1-10 seconds)
Shutdown Time – The interval to wait before the switch automatically
◆
releases an interface from shutdown state. (Range: 1-604,800
seconds, or 0 to disable automatic recovery)
If the recovery time is set to zero, any ports placed in shutdown state
will remain in that state until the switch is reset.
When the loop protection mode is changed, any ports placed in
shutdown state by the loopback detection process will be immediately
restored to operation regardless of the remaining recover time.
Port Configuration
Port – Port identifier.
◆
◆ Enable – Enables loopback detection on a port. (Default: Enabled)
Action – Configures the response to take when a loop is detected on a
◆
port. (Options: Shutdown Port, Shutdown Port and Log, Log Only)
Tx Mode – Controls whether the port is actively generating loop
◆
protection PDUs, or whether it is just passively looking for looped PDUs.
(Default: Enabled)
W I
EB NTERFACE
To configure loop protection:
Click Advanced Configuration, Loop Protection.
1.
Enable loop protection globally, and adjust the control frame
2.
transmission interval and shutdown time as required.
Enable loop protection for the port to be monitored, set the response to
3.
take is a loop is detected, and select whether or not the port will
actively transmit control frames.
Click Save.
4.
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| Configuring the Switch
C 4
HAPTER
Configuring Loop Protection