Users Guide

12 Contents
Removing a Switch from the Stack . . . . . . . . . 222
How is the Firmware Updated on the Stack?
. . . . 223
What is Stacking Standby?
. . . . . . . . . . . . . 223
What is Nonstop Forwarding?
. . . . . . . . . . . 224
Switch Stack MAC Addressing and Stack Design
Considerations
. . . . . . . . . . . . . . . . . . . 227
NSF Network Design Considerations
. . . . . . . . 227
Why is Stacking Needed?
. . . . . . . . . . . . . 228
Default Stacking Values
. . . . . . . . . . . . . . . . . 228
Managing and Monitoring the Stack (Web)
. . . . . . . 230
Unit Configuration
. . . . . . . . . . . . . . . . . . 230
Stack Summary
. . . . . . . . . . . . . . . . . . . 231
Stack Firmware Synchronization
. . . . . . . . . . 232
Supported Switches
. . . . . . . . . . . . . . . . 233
Stack Port Summary
. . . . . . . . . . . . . . . . 234
Stack Port Counters
. . . . . . . . . . . . . . . . . 235
Stack Port Diagnostics
. . . . . . . . . . . . . . . 235
NSF Summary
. . . . . . . . . . . . . . . . . . . . 236
Checkpoint Statistics
. . . . . . . . . . . . . . . . 237
Managing the Stack (CLI)
. . . . . . . . . . . . . . . . 238
Configuring Stack Member, Stack Port, SFS and
NSF Settings
. . . . . . . . . . . . . . . . . . . . 238
Viewing and Clearing Stacking and NSF Information
240
Connecting to the Management Console from a
Stack Member
. . . . . . . . . . . . . . . . . . . 241
Stacking and NSF Usage Scenarios
. . . . . . . . . . . 241
Basic Failover
. . . . . . . . . . . . . . . . . . . . 241
Preconfiguring a Stack Member
. . . . . . . . . . 243
NSF in the Data Center
. . . . . . . . . . . . . . . 245
NSF and VoIP
. . . . . . . . . . . . . . . . . . . . 246
NSF and DHCP Snooping
. . . . . . . . . . . . . . 247