I would need some help understanding an phrase writen in a Cisco manual about UDLD:
"UDLD supports two modes of operation: normal (the default) and aggressive. In normal mode, UDLD can detect unidirectional links due to misconnected ports on fiber-optic connections. In aggressive mode, UDLD can also detect unidirectional links due to one-way traffic on fiber-optic and twisted-pair links and to misconnected ports on fiber-optic links."
What does misconnected means? No connection at all? I ask this because I understand a unidirectional link also a miss connection. But this paragraph is for me the key explaining the difference between normal and aggressive mode.
On a fiber cable you can "unclip" the send/receive individua cables and cross connect them into a device. This will cause the sent to be on the receive side and vice versa.
