Contents
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Catalyst 3560 Switch Software Configuration Guide
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CHAPTER
5 Clustering Switches 5-1
Understanding Switch Clusters 5-2
Cluster Command Switch Characteristics 5-3
Standby Cluster Command Switch Characteristics 5-3
Candidate Switch and Cluster Member Switch Characteristics 5-4
Planning a Switch Cluster 5-4
Automatic Discovery of Cluster Candidates and Members 5-5
Discovery Through CDP Hops 5-5
Discovery Through Non-CDP-Capable and Noncluster-Capable Devices 5-6
Discovery Through Different VLANs 5-7
Discovery Through Different Management VLANs 5-7
Discovery Through Routed Ports 5-8
Discovery of Newly Installed Switches 5-9
HSRP and Standby Cluster Command Switches 5-10
Virtual IP Addresses 5-11
Other Considerations for Cluster Standby Groups 5-11
Automatic Recovery of Cluster Configuration 5-12
IP Addresses 5-13
Host Names 5-13
Passwords 5-14
SNMP Community Strings 5-14
TACACS+ and RADIUS 5-14
Access Modes in CMS 5-15
LRE Profiles 5-15
Availability of Switch-Specific Features in Switch Clusters 5-15
Creating a Switch Cluster 5-16
Enabling a Cluster Command Switch 5-16
Adding Cluster Member Switches 5-17
Creating a Cluster Standby Group 5-19
Verifying a Switch Cluster 5-20
Using the CLI to Manage Switch Clusters 5-21
Catalyst 1900 and Catalyst2820 CLI Considerations 5-22
Using SNMP to Manage Switch Clusters 5-22