PowerConnect 5548 LLDP information not useful

Hello

I have some 5548 switches and am trying to configure LLDP on them.  I already figured out that by default these switches announce nothing as LLDP information to their partners.  So I changed the configuration to include the LLDP parameters as follows (example on switch sa4-16):

interface ethernet g24
lldp optional-tlv port-desc sys-name sys-desc
exit

I have a script that tells me what the LLDP neighbours are:

$ mrrogers sa4-16 | grep g24
g24 -> sa4-39 ge-0/0/5.0

sa4-39 is a Juniper EX2200.  When I run the same script against it, I see what the dell is publishing:

$ mrrogers sa4-39 | grep 'sa4-16'
ge-0/0/5.0 -> sa4-16.gridwayit.local Ethernet Interface

I have tried the other optional-tlv parameters, and tried changing the port description as well -- how do I get the dell switch to announce what ethernet port it is seeing its LLDP neighbour through?

(If you are interested at all, mrrogers is here).