Trunk Group Operation Using Lacp - HP procurve series 4100gl Management And Configuration Manual

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Optimizing Traffic Flow with Port Controls, Port Trunking, and Port-Based Priority

Trunk Group Operation Using LACP

The switch can automatically configure a dynamic LACP trunk group or you
can manually configure a static LACP trunk group.
LACP requires full-duplex (FDx) links of the same media type (10/100Base-T,
100FX, etc.) and the same speed, and enforces speed and duplex conformance
across a trunk group.
LACP trunk status commands include:
Trunk Display Method
show lacp
CLI command
show trunk
CLI command
Port/Trunk Settings screen in menu interface
Thus, to display a listing of dynamic LACP trunk ports, you must use the show
lacp command.
Dynamic LACP trunks operate only in the default VLAN (unless GVRP is
enabled and Forbid is used to prevent the trunked ports from joining the default
VLAN). Thus, if an LACP dynamic port forms using ports that are not in the
default VLAN, the trunk will automatically move to the default VLAN unless
GVRP operation is configured to prevent this from occurring. In some cases,
this can create a traffic loop in your network. For more on this topic, refer to
"VLANs and Dynamic LACP" on page 9-29.
In most cases, trunks configured for LACP on the Series 4100GL switches
operate as described in table 9-9-5 on the next page.
Static LACP Trunk Dynamic LACP Trunk
Included in listing. Included in listing.
Included in listing. Not included.
Included in listing. Not included
Port Trunking
9-25