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Chapter 10: Setting Static Port Trunks

Overview

Static port trunks are commonly used to improve network performance by increasing the available bandwidth between the switch and other network devices as well as to enhance the reliability of the connections between network devices.

When you create a static port trunk, you can designate how the traffic is distributed across the physical links by the switch by defining the load distribution method.

Static port trunks do not permit standby ports, unlike LACP trunks (which are described in Chapter 9, “Setting LACP” on page 105). If a link is lost on a port in a static port trunk, the trunk’s total bandwidth is reduced.

Although the traffic carried by a lost link is shifted to one of the remaining ports in the trunk, the bandwidth remains reduced until a lost link is reestablished or another port is manually added to the trunk.

Here are some guidelines regarding static port trunks:

A static trunk can have up to eight ports.

The switch supports up to a total of 32 static port trunks and LACP trunks at a time. An LACP trunk is counted against the maximum number of trunks when it is active.

The ports of a static port trunk can be all twisted pair ports or all fiber optic ports. Static port trunks cannot have both types of ports.

The ports of a trunk can be consecutive (for example ports 5-9) or nonconsecutive (for example, ports 4, 8, 11, 20).

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