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Enhancements
Release L.10.07 Enhancements
Enabling UDLD. UDLD is enabled on a per port basis. For example, to enable UDLD on port a1,
enter:
To enable the feature on a trunk group, enter the appropriate port range. For example:
Note
When at least one port is UDLD-enabled, the switch will forward out UDLD packets that arrive on
non-UDLD-configured ports out of all other non-UDLD-configured ports in the same vlan. That is,
UDLD control packets will “pass through” a port that is not configured for UDLD. However, UDLD
packets will be dropped on any blocked ports that are not configured for UDLD.
Determines the time interval to send UDLD control packets. The <interval> param-
eter 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>
Determines the maximum number of retries to send UDLD control packets. The
<num> parameter specifies the maximum number of times the port will try the health
check. You can specify a value from 3 – 10.
Default: 5
Syntax: [no] interface <port-list> link-keepalive vlan <vid>
Assigns a VLAN ID to a UDLD-enabled port for sending of tagged UDLD control
packets.Under default settings, untagged UDLD packets can still be transmitted and
received on tagged only ports—however, a warning message will be logged.
The no form of the command disables UDLD on the specified port(s).
Default: UDLD packets are untagged; tagged only ports will transmit and receive
untagged UDLD control packets
ProCurve(config)#interface al link-keepalive
ProCurve(config)#interface al-a4 link-keepalive
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