Contents
viii
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
78-6511-05
Configuring SNMP 6-18
Disabling and Enabling SNMP 6-18
Entering Community Strings 6-19
Adding Trap Managers 6-19
Configuring CDP 6-22
Configuring CDP for Extended Discovery 6-22
Configuring STP 6-24
Supported STP Instances 6-24
Using STP to Support Redundant Connectivity 6-25
Disabling STP 6-25
Accelerating Aging to Retain Connectivity 6-26
Configuring STP and UplinkFast in a Cascaded Cluster 6-26
Configuring Redundant Links By Using STP UplinkFast 6-28
Enabling STP UplinkFast 6-30
Configuring Cross-Stack UplinkFast 6-31
How CSUF Works 6-31
Events that Cause Fast Convergence 6-33
Limitations 6-35
Connecting the Stack Ports 6-35
Configuring Cross-Stack UplinkFast 6-37
Changing the STP Parameters for a VLAN 6-38
Changing the STP Implementation 6-39
Changing the Switch Priority 6-39
Changing the BPDU Message Interval 6-40
Changing the Hello BPDU Interval 6-40
Changing the Forwarding Delay Time 6-41
STP Port States 6-41
Enabling the Port Fast Feature 6-42
Changing the Path Cost 6-43
Changing the Port Priority 6-43
Configuring STP Root Guard 6-44
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