IOS version SWITCH that support LLDP and UDLD

I am using IOS Version 15.1, but it does not have LLDP or UDLD feature. It has just CDP feature.

Any idea?

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Don JohnstonInstructorCommented:
What switch model?
jskfanAuthor Commented:
it is virtual
Don JohnstonInstructorCommented:
All bets are off then.

V15 code supports both LLDP and UDLD.  So if it's not showing as a valid command, it's got to be a quirk of the virtual switch.

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Craig BeckCommented:
Virtual switch?? Are you running it in IOU or via ESW in GNS?
jskfanAuthor Commented:
15.2 supports it
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