HP 2910AL User Manual
Page 249
Port Status and 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.
ProCurve(config)# show link-keepalive statistics
Port:
Port:
Port Blocking: no
Link-vlan: 200
Port:
3
1
Current State: up
Neighbor MAC Addr: 0000a1-b1c1d1
Udld Packets Sent:
1000 Neighbor Port:
5
Udld Packets Received: 1000 State Transitions: 2
Port Blocking: no
Link-vlan:
1
2
Current State: up
Neighbor MAC Addr: 000102-030405
Udld Packets Sent:
500 Neighbor Port:
6
Udld Packets Received: 450 State Transitions: 3
Current State: off line Neighbor MAC Addr: n/a
Udld Packets Sent:
0
Neighbor Port: n/a
Udld Packets Received: 0
State Transitions: 0
Port Blocking: no
Link-vlan:
1
Port:
4
Current State: failure Neighbor MAC Addr: n/a
Udld Packets Sent:
128 Neighbor Port: n/a
Udld Packets Received: 50
State Transitions: 8
Port Blocking: yes Link-vlan:
1
Port 4 is shown as blocked
due to a link-keepalive failure
Figure 10-22. Example of Show Link-Keepalive Statistics Command
To clear UDLD statistics, enter the following command:
ProCurve# clear link-keepalive statistics
This command clears the packets sent, packets received, and transitions
counters in the
show link keepalive statistics display (see Figure 10-22 for an
example).
10-35