HP ProCurve 2610-PWR Management And Configuration Manual page 237

To display detailed UDLD information for specific ports, enter the show link­
keepalive statistics command. For example:
ProCurve(config)# show link-keepalive statistics
Port:
Current State:
Udld Packets Sent:
Udld Packets Received: 1000
Port Blocking:
Port:
Current State:
Udld Packets Sent:
Udld Packets Received: 450
Port Blocking:
Port:
Current State:
Udld Packets Sent:
Udld Packets Received: 0
Port Blocking:
Port:
Current State:
Udld Packets Sent:
Udld Packets Received: 50
Port Blocking:
Figure 10-23. Example of Show Link-Keepalive Statistics Command
To clear UDLD statistics, enter the following command:
This command clears the packets sent, packets received, and transitions
counters in the show link keepalive statistics display (see Figure 10-23 for an
example).
1
up Neighbor MAC Addr:
1000 Neighbor Port:
State Transitions:
no Link-vlan:
2
up Neighbor MAC Addr:
500 Neighbor Port:
State Transitions:
no Link-vlan:
3
off line Neighbor MAC Addr:
0 Neighbor Port:
State Transitions:
no Link-vlan:
4
failure Neighbor MAC Addr:
128 Neighbor Port:
State Transitions:
yes Link-vlan:
ProCurve# clear link-keepalive statistics
Port Status and Basic Configuration
Uni-Directional Link Detection (UDLD)
Ports 1 and 2 are UDLD-enabled and show
the number of health check packets sent
and received on each port.
0000a1-b1c1d1
5
2
1
000102-030405
6
3
200
n/a
n/a
0 Port 4 is shown as blocked
due to a link-keepalive failure
1
n/a
n/a
8
1
10-45