Viewing Udld Information - HP ProCurve Management And Configuration Manual

Port Status and Configuration
Uni-Directional Link Detection (UDLD)
N o t e s
10-28
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 config­
uration (see page 31 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.