Juniper JUNOS OS 10.3 - SOFTWARE Manual page 21

Part 11
Chapter 43
Copyright © 2010, Juniper Networks, Inc.
show system alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 865
show system audit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 866
show system buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 872
show system connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 877
show system core-dumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 893
show system directory-usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 897
show system processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900
Virtual Chassis
Virtual Chassis-Overview, Components, and Configurations . . . . . . . . . . 921
Virtual Chassis Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 921
Basic Configuration of a Virtual Chassis with Master and Backup
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 922
Expanding Configurations-Within a Single Wiring Closet and Across Wiring
Closets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 922
Global Management of Member Switches in a Virtual Chassis . . . . . . . . . . 923
High Availability Through Redundant Routing Engines . . . . . . . . . . . . . . . . . 923
Adaptability as an Access Switch or Distribution Switch . . . . . . . . . . . . . . . 923
Understanding Virtual Chassis Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 924
Virtual Chassis Ports (VCPs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 924
Master Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 924
Backup Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 925
Linecard Role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 925
Member Switch and Member ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 926
Mastership Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 926
Virtual Chassis Identifier (VCID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 927
Understanding How the Master in a Virtual Chassis Configuration Is Elected . . 928
Understanding Software Upgrade in a Virtual Chassis Configuration . . . . . . . . . 928
Understanding Global Management of a Virtual Chassis Configuration . . . . . . . 929
Understanding Nonvolatile Storage in a Virtual Chassis Configuration . . . . . . . . 932
Nonvolatile Memory Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 932
Understanding the High-Speed Interconnection of the Virtual Chassis
Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 932
Understanding Virtual Chassis Configurations and Link Aggregation . . . . . . . . . 932
Understanding Virtual Chassis Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 934
Understanding Virtual Chassis EX4200 Switch Version Compatibility . . . . . . . . 935
Understanding Fast Failover in a Virtual Chassis Configuration . . . . . . . . . . . . . 936
Supported Topologies for Fast Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 936
How Fast Failover Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 936
Fast Failover in a Ring Topology using Dedicated VCPs . . . . . . . . . . . . . 936
Fast Failover in a Ring Topology Using Uplink Module VCPs . . . . . . . . . 938
Fast Failover in a Virtual Chassis Configuration Using Multiple Ring
Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 940
Effects of Topology Changes on a Fast Failover Configuration . . . . . . . . . . . 941
Understanding Split and Merge in a Virtual Chassis Configuration . . . . . . . . . . . 942
What Happens When a Virtual Chassis Configuration Splits . . . . . . . . . . . . 942
Merging Virtual Chassis Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 943
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