Cisco Catalyst 3560-X User Manual

CHAPTER
1-1
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
1
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 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.
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 1-1
• Configuring Flex Links and MAC Address-Table Move Update, page 1-7
• Monitoring Flex Links and the MAC Address-Table Move Update, page 1-14
Understanding Flex Links and the MAC Address-Table Move
Update
This section contains this information:
• Flex Links, page 1-1
• VLAN Flex Link Load Balancing and Support, page 1-2
• Flex Link Multicast Fast Convergence, page 1-3
• MAC Address-Table Move Update, page 1-6
Flex Links
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

Cisco Catalyst 3560-X Specifications

General

Enclosure Type	Rack-mountable - 1U
Subtype	Gigabit Ethernet
Ports	48 x 10/100/1000 + 4 x SFP
Flash Memory	64 MB
Power Device	Internal power supply
Voltage Required	AC 120/230 V (50/60 Hz)
Operating System	Cisco IOS
Device Type	Switch
Performance	Switching capacity: 128 Gbps
Jumbo Frame Support	Yes
Routing Protocol	RIP-1, RIP-2, EIGRP
Remote Management Protocol	SNMP 1, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, HTTP, HTTPS
Features	DHCP support, VLAN support, QoS, IPv6 support, Syslog
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3z, IEEE 802.1D, IEEE 802.1Q, IEEE 802.3ab, IEEE 802.1p, IEEE 802.3af, IEEE 802.3x, IEEE 802.3ad, IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.3ah, IEEE 802.1ag, IEEE 802.3at
Stacking	Stackable
Security Features	SSH, RADIUS, TACACS+
Management	CLI
Dimensions (H x W x D)	17.5 in
Operating Temperature	32 to 113 °F (0 to 45 °C)
Humidity	10 - 95% (non-condensing)