Supermicro SSE-G2252, Руководство пользователя

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Chapter 14: Basic Administration Protocols
UDLD Configuration
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2.
Select Show Test Result from the Action list.
Figure 14-97: Displaying the Results of Remote Loop Back Testing
UDLD C
ONFIGURATION
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.
CLI R
EFERENCES
• “udld message-interval” on page 1007
• “udld aggressive” on page 1008
• “udld port” on page 1009
• “show udld” on page 1010
U
SAGE
G
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 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.