N o t e

N o t e

Optimizing Traffic Flow with Port Controls, Port Trunking, and Filters

Port Trunking

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

Static LACP Trunk

Dynamic LACP Trunk

CLI show lacp command

Included in listing.

Included in listing.

CLI show trunk command

Included in listing.

Not included.

Port/Trunk Settings screen in menu interface

Included in listing.

Not included

 

 

 

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 5300XL Switches operate as described in table 9-6on the next page.

9-25