Intel 470 manual Link Aggregation

C H A P T E R 2 Intel® NetStructure™ 470T and 470F Switches User Guide

Although there are eight priority levels, the 470 switches can only put a packet into one of the two queues. The switch maps levels 0-3 to the low queue and levels 4-7 to the high queue. If a packet is untagged, the switch can be set to use either the high or low queue for that port. The

470 switches preserve the priority level of the packet.

Express 460T

7

6HIGH

Incoming	transmit
	queue	Network
packet
	for the
	port	3
		2

1LOW

Note

When connecting to another switch, connect anchor port to anchor port and member port to member port.

Link Aggregation

Link aggregation allows you to combine from two to four (adjacent) ports so that they function as a single high-speed link. For example, link aggregation is useful when making connections between switches or connecting servers to the switch.

You can use link aggregation, also known as port trunking, to increase the bandwidth to some devices. Link aggregation can also provide a redundant link for fault tolerance. If one link in the aggregation fails, the switch balances the traffic among the remaining links.

To aggregate ports, you must link an “anchor” port with an adjacent port. The 470 switches support up to four link aggregation groups (anchor ports 1,3, 5, or 7). All aggregated ports must be the same speed.

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