Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 1071

Example: Assigning the Virtual Chassis ID to Determine Precedence During an EX4200
Virtual Chassis Merge
Requirements
Overview and Topology
Copyright © 2010, Juniper Networks, Inc.
Configuring an EX4200 Virtual Chassis (CLI Procedure) on page 981
Configuring an EX4200 Virtual Chassis (J-Web Procedure) on page 985
There are two scenarios in which separate Virtual Chassis merge:
A Virtual Chassis configuration that had split into two is now merging back into a single
configuration because the problem that had caused it to split has been resolved.
You want to merge two Virtual Chassis that had not previously been configured together.
You can explicitly assign a Virtual Chassis ID so that, when two EX4200 Virtual Chassis
configurations merge, the ID that you assigned takes precedence over the automatically
assigned Virtual Chassis IDs and becomes the ID of the newly merged Virtual Chassis
configuration.
This example describes how to assign the Virtual Chassis ID in an EX4200 Virtual Chassis
configuration:
Requirements on page 967
Overview and Topology on page 967
Configuration on page 968
Verification on page 968
This example uses the following hardware and software components:
Junos OS Release 9.3 or later for EX Series switches
Two EX4200-48P switches
Two EX4200-24T switches
Before you begin, be sure you have:
Installed the switches. See Mounting an EX4200 Switch.
1.
Cabled the switches to create the Virtual Chassis configuration. See Connecting a
2.
Virtual Chassis Cable to an EX4200 Switch.
Every Virtual Chassis configuration has a unique ID that is automatically assigned when
the Virtual Chassis configuration is formed. You can also configure a Virtual Chassis ID
using the set virtual-chassis id
Chassis ID that you assigned takes precedence over the automatically assigned Virtual
Chassis IDs and becomes the ID for the newly merged Virtual Chassis configuration.
Chapter 38: EX4200 Virtual Chassis—Configuration Examples
command. When two Virtual Chassis merge, the Virtual
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