Juniper EX9200 Features Manual page 4

Virtual Chassis Feature Guide for EX9200 Switches
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Part 2
Chapter 9
Part 3
Chapter 10
iv
Upgrading Junos OS in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Upgrading Junos OS Software in an EX9200 Virtual Chassis . . . . . . . . . . . . . . . . 45
Deleting a Member ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Deleting Member IDs in a Virtual Chassis Configuration . . . . . . . . . . . . . . . . . . . . 49
Module Redundancy and GRES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Targeted Traffic Distribution on Aggregated Ethernet Interfaces in a Virtual
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Targeted Distribution in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Benefits of Targeted Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Configuring Module Redundancy for a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . 52
Determining GRES Readiness in a Virtual Chassis Configuration . . . . . . . . . . . . . 54
Global Roles and Local Roles that Determine Mastership and Switchover
Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Mastership Election in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Global Roles and Local Roles in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . 59
Role Name Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Global Role and Local Role Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Switching the Global Master and Backup Roles in a Virtual Chassis
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Minimizing Network Disruption Using Split Detection . . . . . . . . . . . . . . . . . . 63
Split Detection Behavior in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
How Split Detection Works in a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . 63
Effect of Split Detection on Virtual Chassis Failure Scenarios . . . . . . . . . . . . 64
Disabling Split Detection in a Virtual Chassis Configuration . . . . . . . . . . . . . . . . . 68
Troubleshooting
Acquiring Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Configuring the Name of the Virtual Chassis Trace Log File . . . . . . . . . . . . . . . . . . 71
Configuring Characteristics of the Virtual Chassis Trace Log File . . . . . . . . . . . . . . 72
Configuring Access to the Virtual Chassis Trace Log File . . . . . . . . . . . . . . . . . . . . 73
Using Regular Expressions to Refine the Output of the Virtual Chassis Trace Log
File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Configuring the Virtual Chassis Operations to Trace . . . . . . . . . . . . . . . . . . . . . . . . 75
traceoptions (Virtual Chassis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Routine Monitoring
Monitoring a Virtual Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Verifying the Status of Virtual Chassis Member Routers or Switches . . . . . . . . . . 83
Verifying Neighbor Reachability for Member Routers or Switches in a Virtual
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Verifying Neighbor Reachability for Hardware Devices in a Virtual Chassis . . . . . 84
Viewing Information in the Virtual Chassis Control Protocol Adjacency
Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Viewing Information in the Virtual Chassis Control Protocol Link-State
Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
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