510 Dell PowerConnect 55xx Systems User GuideFILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Maintenance Projects\DellContax\sources\CxUGSwitching_LAG.fmD E L L C O N F I D E N T I A L – P R E L I M I N A R Y 1 0 / 3 0 / 1 3 - F O R P R O O F O N LYLink Aggregation OverviewLink Aggregation optimizes port usage by linking a group of ports together toform a single LAG (aggregated group). Aggregating ports multiplies thebandwidth between the devices, increases port flexibility, and provides linkredundancy.The device supports the following types of LAGs:• Static LAGs — Manually-configured LAGs.• Link Aggregation Control Protocol (LACP) LAGs — LACP LAGsnegotiate aggregating a port’s links with other LACP ports located on adifferent device. If the other device ports are also LACP ports, the devicesestablishes a LAG between them.When you aggregate ports, the ports and LAG must fulfill the followingconditions:• 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 apreviously configured LAG.
