Configuring uni-directional link detection (UDLD) (CLI)
For detailed information about UDLD, see Uni-directional link detection (UDLD).
Syntax:
[no] interface <port-list> link-keepalive
Enables UDLD on a port or range of ports.
To disable this 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 to 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 to 10.
Default: 5
Syntax:
[no] interface <port-list> link-keepalive vlan <vid>
Assigns a VLAN ID to a UDLD-enabled port for sending tagged UDLD control packets.Under default settings, untagged UDLD packets can still be transmitted and received on tagged only ports; however, a warning message is logged.
The no
form of the command
disables UDLD on the specified ports.
Default: UDLD packets are untagged; tagged-only ports transmit and receive untagged UDLD control packets