HP ProCurve Series 4100GL Management And Configuration Manual page 196

Optimizing Traffic Flow with Port Controls, Port Trunking, and Port-Based Priority
Port Trunking
C a u t i o n
10-22
Configuring a Static Trunk, Static FEC, or Static LACP Trunk Group.
Syntax: trunk < trk1 | trk2 | trk3 | trk4 | trk5 | trk6 > < trunk | fec | lacp > <port-list>
This example uses ports C4 - C6 to create a non-protocol static trunk group
with the group name of Trk2.
HPswitch(config)# trunk trk2 trunk c4-c6
Removing Ports from a Static Trunk Group. This command removes
one or more ports from an existing Trkx trunk group.
Removing a port from a trunk can result in a loop and cause a broadcast storm.
When you remove a port from a trunk where STP is not in use, HP recommends
that you first disable the port or disconnect the link on that port.
Syntax: no trunk < port-list >
This example removes ports C4 and C5 from an existing trunk group.
HPswitch(config)# no trunk c4-c5
Enabling a Dynamic LACP Trunk Group. In the default port configura­
tion, all ports on the switch are set to LACP Passive. However, to enable the
switch to automatically form a trunk group that is dynamic on both ends of
the link, the ports on one end of a set of links must be LACP Active. The ports
on the other end can be either LACP Active or LACP Passive. This command
enables the switch to automatically establish a (dynamic) LACP trunk group
when the device on the other end of the link is configured for LACP Passive.