Dell PowerConnect 5548 User Guide - Page 501

Link Aggregation Overview Link Aggregation optimizes port usage by linking a group of ports together to form a single LAG (aggregated group). Aggregating ports multiplies the bandwidth between the devices, increases port flexibility, and provides link redundancy. The device supports the following types of LAGs: • Static LAGs - Manually-configured LAGs. • Link Aggregation Control Protocol (LACP) LAGs - LACP LAGs negotiate aggregating a port's links with other LACP ports located on a different device. If the other device ports are also LACP ports, the devices establishes a LAG between them. When you aggregate ports, the ports and LAG must fulfill the following conditions: • All ports within a LAG must be the same media type. • A VLAN is not configured on the port. • The port is not assigned to another LAG. • Auto-negotiation mode is not configured on the port. • The port is in full-duplex mode. • All ports in the LAG have the same ingress filtering and tagged modes. • All ports in the LAG have the same back pressure and flow control modes. • All ports in the LAG have the same priority. • All ports in the LAG have the same transceiver type. • The device supports up to 32 LAGs, and eight ports in each LAG. • Ports can be configured as LACP ports only if the ports are not part of a previously configured LAG. Dell PowerConnect 55xx Systems User Guide 501