ProCurve 2610-PWR Informations techniques télécharger pdf (Page 234)

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Port Status and Basic Configuration

Uni-Directional Link Detection (UDLD)

When a port is blocked by UDLD, the event is recorded in the switch log or

via an SNMP trap (if configured); and other port blocking protocols, like

spanning tree or meshing, will not use the bad link to load balance packets.

The port will remain blocked until the link is unplugged, disabled, or fixed.

The port can also be unblocked by disabling UDLD on the port.

Configuring UDLD

When configuring UDLD, keep the following considerations in mind:

■ UDLD is configured on a per-port basis and must be enabled at both

ends of the link. See the note below for a list of ProCurve switches

that support UDLD.

■ To configure UDLD on a trunk group, you must configure the feature

on each port of the group individually. Configuring UDLD on a trunk

group’s primary port enables the feature on that port only.

■ Dynamic trunking is not supported. If you want to configure a trunk

group that contains ports on which UDLD is enabled, you must

remove the UDLD configuration from the ports. After you create the

trunk group, you can re-add the UDLD configuration.

Note UDLD interoperates with the following ProCurve switch series: 2600, 2800,

3400, 3500, 4200, 5300, 5400, 6200, 6400, 8212, and 9300. Consult the release

notes and current manuals for required software versions.

The following commands allow you to configure UDLD via the CLI.

Syntax: [no] interface <port-list> link-keepalive

Enables UDLD on a port or range of ports.

To disable the feature, enter the no form of the command.

Default: UDLD disabled

Syntax: link-keepalive interval <interval>

Determines the time interval to send UDLD control packets. The

<interval> parameter specifies how often the ports send a UDLD

packet. You can specify from 10 – 100, in 100 ms increments,

where 10 is 1 second, 11 is 1.1 seconds, and so on.

Default: 50 (5 seconds)

Syntax: link-keepalive retries <num>

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ProCurve 2610-PWR Informations techniques Page 234