3Com 3CBLSG24 User Guide - Page 92
Aggregating Ports
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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 LAG. A Link Aggregated Group (LAG) aggregates ports or VLANs into a single virtual port or VLAN. Aggregating ports multiplies the bandwidth between the devices, increases port flexibility, and provides link redundancy. Ensure the following: ■ All ports within a LAG must be the same media type. ■ All ports added to an existing LAG which are part of a tagged VLAN inherit the existing VLAN tags. ■ 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 eight LAGs, and eight ports in each LAG. ■ Ports added to a LAG lose their individual port configuration. When ports are removed from the LAG, the original port configuration is 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