Cisco Catalyst 3120

Contents
xviii
Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
OL-12247-01
How CSUF Works 19-6
Events that Cause Fast Convergence 19-7
Understanding BackboneFast 19-7
Understanding EtherChannel Guard 19-10
Understanding Root Guard 19-10
Understanding Loop Guard 19-11
Configuring Optional Spanning-Tree Features 19-11
Default Optional Spanning-Tree Configuration 19-12
Optional Spanning-Tree Configuration Guidelines 19-12
Enabling Port Fast 19-12
Enabling BPDU Guard 19-13
Enabling BPDU Filtering 19-14
Enabling UplinkFast for Use with Redundant Links 19-15
Enabling Cross-Stack UplinkFast 19-16
Enabling BackboneFast 19-16
Enabling EtherChannel Guard 19-17
Enabling Root Guard 19-18
Enabling Loop Guard 19-18
Displaying the Spanning-Tree Status 19-19
CHAPTER 20 Configuring Flex Links and the MAC Address-Table Move Update Feature 20-1
Understanding Flex Links and the MAC Address-Table Move Update 20-1
Flex Links 20-1
VLAN Flex Link Load Balancing and Support 20-2
MAC Address-Table Move Update 20-3
Configuring Flex Links and MAC Address-Table Move Update 20-5
Configuration Guidelines 20-5
Default Configuration 20-5
Configuring Flex Links and MAC Address-Table Move Update 20-6
Configuring Flex Links 20-6
Configuring VLAN Load Balancing on Flex Links 20-8
Configuring the MAC Address-Table Move Update Feature 20-9
Monitoring Flex Links and the MAC Address-Table Move Update 20-11
CHAPTER 21 Configuring DHCP Features and IP Source Guard 21-1
Understanding DHCP Features 21-1
DHCP Server 21-2
DHCP Relay Agent 21-2
DHCP Snooping 21-2