Port Status and Configuration

Uni-Directional Link Detection (UDLD)

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 37 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.

To display summary information on all UDLD-enabled ports, enter the show link-keepalivecommand. For example:

ProCurve(config)# show link-keepalive

 

 

 

 

 

Total link-keepalive enabled ports: 4

 

 

 

 

 

Keepalive Retries: 3

Keepalive Interval: 1 sec

 

 

 

 

Port

Enabled

Physical

Keepalive

Adjacent

UDLD

Port 1 is UDLD-enabled, and

 

tagged for a specific VLAN.

 

 

 

Status

Status

Switch

VLAN

 

 

 

 

 

 

 

 

 

 

-------------------------------------------------------------------

 

 

1

Yes

up

up

00d9d-f9b700

200

 

 

 

 

2

Yes

up

up

01560-7b1600

 

 

Port 3 is UDLD-enabled, but

 

 

3

Yes

down

off-line

 

 

has no physical connection.

 

 

4

Yes

up

failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Port 4 is connected, but is blocked

 

 

 

5

No

down

off-line

 

 

 

 

 

due to a link-keepalive failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Port 5 has been disabled by the System Administrator.

Figure 10-22. Example of Show Link-Keepalive Command

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