Solved: Enable LLDP on Cisco 3750

btedeschi · ‎02-03-2016

Need to enable LLDP on a 3750 switch, but command will not take and receive, "invalid input detected". Reason LLDP needs to be turned is for 4 Meraki MR34 access points. MR34 is running in low power mode and Meraki support suggested enabling LLDP (lldp run from confg t mode), but it is not working. Also tried to enable LLDP on individual interfaces, but those commands will not work either. That is as far as Meraki will take it so hoping this support community can help. 3750 is running IOS version c3750-ipservicesk9-mz.122-25.SEE4.

According to 3750 switch Power for the MR34s is 15.4W

Interface Admin Oper Power Device Class Max

(Watts)

--------- ------ ---------- ------- ------------------- ----- ----

Fa1/0/1 auto off 0.0 n/a n/a 15.4

Fa1/0/2 auto off 0.0 n/a n/a 15.4

Fa1/0/3 auto on 15.4 MR34 4 15.4

Fa1/0/4 auto on 15.4 MR34 4 15.4

Fa1/0/5 auto on 15.4 MR34 4 15.4

According to Meraki dashboard power consumption

9.34 W PoE 802.3af (running in low power mode)

Thanks in advance for any help provided.

Brett

Joseph W. Doherty · ‎02-03-2016

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Posting

Believe you need a newer IOS version for LLDP support. (As Cisco has had CDP, they're a bit late supporting LLDP.)

View solution in original post

Rolf Fischer · ‎02-03-2016

Have a look at Table 6 of the c3750 12.2(46)SE Release Notes:

Link Layer Discovery Protocol (LLDP) and LLDP Media Endpoint Discovery (LLDP-MED: 12.2(37)SE

Link Layer Discovery Protocol Media Extensions (LLDP-MED): 12.2(40)SE

HTH

Rolf