What do the "udld enable" and "udld aggressive" global config commands do?
Judging from the descriptions, they should enable UDLD by default (in normal or aggressive mode) on all fiber ports on the switch, unless there is other UDLD configuration on it.
udld ? aggressive Enable UDLD protocol in aggressive mode on fiber ports except where locally configured enable Enable UDLD protocol on fiber ports except where locally configured message Set UDLD message parameters
I did a "udld aggressive" global config command and went to check the UDLD status on the fiber interface (which FYI has no cable attached to it). Why is UDLD showing disabled even though I enabled it in the global config mode?
sh run | i udld udld aggressive udld message time 5
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