Filter
Top Products
CHAPTER
18-1
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
18
Configuring Flex Links and the MAC
Address-Table Move Update Feature
This chapter describes how to configure Flex Links, a pair of interfaces on the Cisco ME 3400 switch
that are used to 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. These features
are available only when the switch is running the metro IP access or metro access image.
Note 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:
• Understanding Flex Links and the MAC Address-Table Move Update, page 18-1
• Configuring Flex Links and MAC Address-Table Move Update, page 18-7
• Monitoring Flex Links and the MAC Address-Table Move Update, page 18-14
Understanding Flex Links and the MAC Address-Table Move
Update
This section contains information about these features:
• Flex Links, page 18-1
• VLAN Flex Link Load Balancing and Support, page 18-2
• Flex Link Multicast Fast Convergence, page 18-3
• MAC Address-Table Move Update, page 18-6
Flex Links
Flex Links are a pair of a Layer 2 interfaces (switchports 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), allowing users to turn off STP and still provide basic link redundancy. Flex Links