Dell PowerConnect J-EX4200-24T Software Manual page 21

Part 11 Virtual Chassis
Chapter 43 Virtual Chassis-Overview, Components, and Configurations . . . . . . . . . . 691
Virtual Chassis Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 691
Understanding Virtual Chassis Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 694
Understanding How the Master in a Virtual Chassis Configuration Is Elected . . 698
Understanding Software Upgrade in a Virtual Chassis Configuration . . . . . . . . 698
Understanding Global Management of a Virtual Chassis Configuration . . . . . . 699
Understanding Nonvolatile Storage in a Virtual Chassis Configuration . . . . . . . . 702
Understanding the High-Speed Interconnection of the Virtual Chassis
Understanding Virtual Chassis Configurations and Link Aggregation . . . . . . . . . 702
Understanding Virtual Chassis Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704
Understanding Virtual Chassis J-EX4200 Switch Version Compatibility . . . . . . 705
Understanding Fast Failover in a Virtual Chassis Configuration . . . . . . . . . . . . . . 706
Understanding Split and Merge in a Virtual Chassis Configuration . . . . . . . . . . . . 712
Understanding Automatic Software Update on Virtual Chassis Member
Chapter 44 Virtual Chassis-Configuration Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . 717
Example: Configuring a Virtual Chassis with a Master and Backup in a Single
Example: Expanding a Virtual Chassis Configuration in a Single Wiring Closet . . 722
Example: Setting Up a Multimember Virtual Chassis Access Switch with a Default
Basic Configuration of a Virtual Chassis with Master and Backup
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692
Expanding Configurations-Within a Single Wiring Closet and Across Wiring
Closets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692
Global Management of Member Switches in a Virtual Chassis . . . . . . . . . . 693
High Availability Through Redundant Routing Engines . . . . . . . . . . . . . . . . . 693
Adaptability as an Access Switch or Distribution Switch . . . . . . . . . . . . . . . 693
Virtual Chassis Ports (VCPs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 694
Master Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 694
Backup Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 695
Linecard Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 695
Member Switch and Member ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 696
Mastership Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 696
Virtual Chassis Identifier (VCID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 697
Nonvolatile Memory Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 702
Supported Topologies for Fast Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 706
How Fast Failover Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 706
Fast Failover in a Ring Topology using Dedicated VCPs . . . . . . . . . . . . . 706
Fast Failover in a Ring Topology Using Uplink Module VCPs . . . . . . . . . 708
Fast Failover in a Virtual Chassis Configuration Using Multiple Ring
Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 710
Effects of Topology Changes on a Fast Failover Configuration . . . . . . . . . . . . 711
What Happens When a Virtual Chassis Configuration Splits . . . . . . . . . . . . . 712
Merging Virtual Chassis Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 713
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 715
Wiring Closet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 717
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 727
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