Commands for Status Monitoring and Statistics
ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
ExtremeWare XOS 11.5 Command Reference Guide
658
show elsm
show elsm
Description
Displays summary information for all of the ELSM-enabled ports on the switch.
Syntax Description
This command has no arguments or variables.
Default
N/A.
Usage Guidelines
Use this command to display the operational state of ELSM on the configured ports.
If no ports are configured for ELSM, the switch does not display any information.
For ELSM-enabled ports, this command displays the following information in a tabular format:
●
Port—The port number of the ELSM-enabled port.
●
ELSM State—The current state of ELSM on the port. The ELSM state can be one of the following:
■
Up—Indicates a healthy remote system and this port is receiving Hello+ messages from its peer.
If an ELSM-enabled port enters the Up state, the up timer begins. Each time the port receives a
Hello+ message from its peer, the up timer restarts and the port remains in the Up state.
■
Down—Indicates that the port is down, blocked, or has not received Hello+ messages from its
peer.
If an ELSM-enabled port does not receive a hello message from its peer before the up timer
expires, the port transitions to the Down state. When ELSM is down, data packets are neither
forwarded nor transmitted out of that port.
■
Down-Wait—Indicates a transitional state.
If the port enters the Down state and later receives a Hello+ message from its peer, the port
enters the Down-Wait state. If the number of Hello+ messages received is greater than or equal to
the hello threshold (by default 2 messages), the port transitions to the Up state. If the number of
Hello+ messages received is less than the hold threshold, the port enters the Down state.
■
Down-Stuck—Indicates that the port is down and requires user intervention.
If the port repeatedly flaps between the Up and Down states, the port enters the Down-Stuck
state. Depending on your configuration, there are two ways for a port to transition out of this
state:
By default, automatic restart is enabled, and the port automatically transitions out of this state.
See the command
enable elsm ports auto-restart
on page 643
for more information.
