7

AGGREGATING PORTS

 

This section contains information for configuring Link Aggregation, which optimizes port usage by linking a group of ports together to form a single Link Aggregation Group (LAG). An LAG aggregates ports into a single virtual port. Aggregating ports multiplies the bandwidth between the devices, increases port flexibility, and provides link redundancy. Note the following:

The device supports up to four LAGs, and eight ports in each LAG.

The ports at both ends of a connection must be configured as trunk ports.

Fast Ethernet ports and Gigabit Ethernet ports cannot be combined as members in a single trunk.

All ports in a trunk assume the configuration settings of the first member port (that is, the first port assigned or the lowest numbered port if more than one port is assigned to a trunk in the same command), including communication mode (i.e., speed, duplex mode and flow control), VLAN assignments, and CoS settings.

STP, VLAN, and IGMP settings can only be made for the entire trunk via the specified LAG.

Ports added to a LAG lose their individual port configuration. When ports are removed from the LAG, the LAG’s configuration settings are applied to the ports.

This section contains the following topics:

Viewing Link Aggregation

Configuring Link Aggregation

Modifying Link Aggregation

Removing Link Aggregation

Viewing LACP

Modifying LACP

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3Com 3CRDSF9PWR manual Aggregating Ports