Extreme Networks Summit1 manual Load Sharing

	LOAD SHARING
Table 4-1:Port Commands (continued)
Command	Description
show port {<portlist>} txerrors	Displays real-time transmit error statistics. For
	more information on error statistics, refer to
	Chapter 12.
show port {<portlist>} utilization	Displays real-time port utilization information. Use
	the [Spacebar] to toggle between packet, byte,
	and bandwidth utilization information.

LOAD SHARING

Load sharing with Summit switches allows you to increase bandwidth and resilience between switches by using a group of ports to carry traffic in parallel between switches. The sharing algorithm allows the switch to use multiple ports as a single logical port. For example, VLANs see the load-sharing group as a single logical port. The algorithm also guarantees packet sequencing between clients.

If a port in a load-sharing group fails, traffic is redistributed to the remaining ports in the load-sharing group. If the failed port becomes active again, traffic is redistributed to include that port.

Load sharing is most useful in cases where the traffic transmitted from the switch to the load-sharing group is sourced from an equal or greater number of ports on the switch. For example, traffic transmitted to a 2-port load-sharing group should originate from a minimum of two other ports on the same switch.

This feature is supported between Summit switches only, but may be compatible with third-party “trunking” or sharing algorithms. Check with an Extreme Networks technical representative for more information.

SUMMIT SWITCH INSTALLATION AND USER GUIDE 4-5