Cisco Catalyst 3750-E Series, Software Configuration Manual

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Catalyst 3750-E and 3560-E Switch Software Configuration Guide
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Chapter 5 Managing Switch Stacks
Understanding Switch Stacks
•
A network management application through the Simple Network Management Protocol (SNMP)
Use SNMP to manage network features across the switch stack that are defined by supported MIBs.
The switch does not support MIBs to manage stacking-specific features such as stack membership
and election.
•
CiscoWorks network management software
To manage switch stacks, you should understand:
•
These concepts on how switch stacks are formed:
– Switch Stack Membership, page 5-3
–
Stack Master Election and Re-Election, page 5-5
• These concepts on how switch stacks and stack members are configured:
–
Switch Stack Bridge ID and Router MAC Address, page 5-7
– Stack Member Numbers, page 5-7
–
Stack Member Priority Values, page 5-8
– Switch Stack Offline Configuration, page 5-8
–
Hardware Compatibility and SDM Mismatch Mode in Switch Stacks, page 5-10
– Switch Stack Software Compatibility Recommendations, page 5-11
–
Stack Protocol Version Compatibility, page 5-11
– Major Version Number Incompatibility Among Switches, page 5-11
–
Minor Version Number Incompatibility Among Switches, page 5-11
– Incompatible Software and Stack Member Image Upgrades, page 5-15
–
Switch Stack Configuration Files, page 5-15
– Additional Considerations for System-Wide Configuration on Switch Stacks, page 5-16
–
Switch Stack Management Connectivity, page 5-16
– Switch Stack Configuration Scenarios, page 5-18
Note A switch stack is different from a switch cluster . A switch cluster is a set of switches connected through
their LAN ports, such as the 10/100/1000 ports. For more information about how switch stacks differ
from switch clusters, see the “Planning and Creating Clusters” chapter in the
Getting Started with Cisco
Network Assistant on Cisco.com.
Switch Stack Membership
A switch stack has up to nine stack members connected through their StackWise Plus ports. A switch
stack always has one stack master.
A standalone switch is a switch stack with one stack member that also operates as the stack master. You
can connect one standalone switch to another (
Figure 5-1 on page 5-4 ) to create a switch stack
containing two stack members, with one of them as the stack master. You can connect standalone
switches to an existing switch stack (
Figure 5-2 on page 5-5 ) to increase the stack membership.