We recently purchased some HP Procurve 2920 switches and in setting them up I noticed multiple options for port groups. I wanted to see if anyone can clarify functional differences between setting up a port group as a 'Trunk' vs an active LACP group. Can't seem to find definitive documentation on the function of the 'Trunk' option or what protocols it uses.

Thanks a lot!


The switch has a built-in help function: ?

xa-eng(config)# trunk 1-2 trk17 
 trunk                 Do not use any protocol to create or maintain the trunk.
 lacp                  Use IEEE 802.1ad Link Aggregation protocol.
  • Thanks, I have not had a chance to get into the CLI for the HP switches that much and did not think to look there. Looks like the 'trunk' option is a static bond whereas the LACP is an active group. Thanks again! – Mike Naylor Jan 22 '14 at 19:00
  • And, yes, their help text does call it 802.**1**ad – Ricky Jan 22 '14 at 19:03
  • I noticed that... obviously a typo or someone's quick edit in the help file. Thanks again for the quick response. Looks like I'll be using the LACP since it's an actively negotiated connection. – Mike Naylor Jan 22 '14 at 19:21
  • @RickyBeam Wow, that should be brought up to their production team. – Ryan Foley Jan 22 '14 at 19:23
  • @Fizzle I just checked our switches with the same command and it now shows IEEE 802.3ad Link Aggregation Protocol. I think someone caught that as these switches were shipped this month. :-D – Mike Naylor Jan 22 '14 at 19:33

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