Port Status and Configuration

Uni-Directional Link Detection (UDLD)

To display detailed UDLD information for specific ports, enter the show link- keepalive statistics command. For example:

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:

1

Neighbor MAC Addr:

0000a1-b1c1d1

Current State:

up

Udld Packets Sent:

1000

Neighbor Port:

5

 

 

Udld Packets Received:

1000

State Transitions:

2

 

 

Port Blocking:

no

Link-vlan:

1

 

 

Port:

2

Neighbor MAC Addr:

000102-030405

Current State:

up

Udld Packets Sent:

500

Neighbor Port:

6

 

 

Udld Packets Received:

450

State Transitions:

3

 

 

Port Blocking:

no

Link-vlan:

200

 

Port:

3

Neighbor MAC Addr:

n/a

 

Current State:

off line

 

Udld Packets Sent:

0

Neighbor Port:

n/a

 

Udld Packets Received:

0

State Transitions:

0

 

Port 4 is shown as blocked

Port Blocking:

no

Link-vlan:

1

 

due to a link-keepalive failure

 

 

 

 

 

Port:

4

 

 

 

 

Neighbor MAC Addr:

n/a

 

Current State:

failure

 

Udld Packets Sent:

128

Neighbor Port:

n/a

 

Udld Packets Received:

50

State Transitions:

8

 

 

Port Blocking:

yes

Link-vlan:

1

 

 

Figure 10-23. 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 10-23 for an example).

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