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Enhancements
Release M.10.09 Enhancements
Notes
■ You must configure the same VLANs that will be used for UDLD on all devices across the
network; otherwise, the UDLD link cannot be maintained.
■ If a VLAN ID is not specified, then UDLD control packets are sent out of the port as untagged
packets.
■ To re-assign a VLAN ID, re-enter the command with the new VLAN ID number. The new
command will overwrite the previous command setting.
■ When configuring UDLD for tagged ports, you may receive a warning message if there are
any inconsistencies with the port’s VLAN configuration (see page 87 for potential problems).
Viewing UDLD Information
The following show commands allow you to display UDLD configuration and status via the CLI.
Syntax: show link-keepalive
Displays all the ports that are enabled for link-keepalive.
Syntax: show link-keepalive statistics
Displays detailed statistics for the UDLD-enabled ports on the switch.
Syntax: clear link-keepalive statistics
Clears UDLD statistics. This command clears the packets sent, packets received, and
transitions counters in the show link-keepalive statistics display.
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