Cisco Systems 3560X Manual De Usuario

This chapter describes how to configure Flex Links, a pair of interfaces on the Catalyst 3750-X 
or 3560-X switch that provide a mutual backup. It also describes how to configure the MAC 
address-table move update feature, also referred to as the Flex Links bidirectional fast convergence 
feature. Unless otherwise noted, the term switch refers to a Catalyst 3750-X or 3560-X standalone switch 
and to a Catalyst 3750-X switch stack.

For complete syntax and usage information for the commands used in this chapter, see the command 
reference for this release.

The chapter consists of these sections:

This section contains this information:

Flex Links are a pair of a Layer 2 interfaces (switch ports or port channels) where one interface is 
configured to act as a backup to the other. The feature provides an alternative solution to the Spanning 
Tree Protocol (STP). Users can disable STP and still retain basic link redundancy. Flex Links are