Juniper JUNOS OS 10.3 - SOFTWARE, Manual

Page: 1049 / 3946

•
Verification on page 955
• Troubleshooting on page 957
Requirements
This example uses the following hardware and software components:
• Junos OS Release 9.0 or later for EX Series switches
• One EX4200-48P switch
•
One EX4200-24T switch
•
One EX4200-24P switch
• One XFP uplink module
Before you begin, be sure you have:
• Confirmed that the existing Virtual Chassis configuration is operating correctly. See
“Example: Configuring a Virtual Chassis with a Master and Backup in a Single Wiring
Closet” on page 947.
Overview and Topology
A Virtual Chassis configuration can be expanded without disrupting the site's network
connectivity. This example describes adding a member switch to an existing Virtual
Chassis configuration to provide additional access ports for connecting more PCs and
VoIP phones at this location. You can continue to expand the Virtual Chassis configuration
with additional members in the same wiring closet, using the same procedure. If you want
to expand the Virtual Chassis configuration to include member switches in another wiring
closet, see “Example: Configuring a Virtual Chassis Interconnected Across Multiple Wiring
Closets” on page 963.
If you want to retain the roles of the existing master and backup switches, explicitly
configure the mastership priority of these switches, specifying the highest possible value
(255) for both the master and the backup.
During expansion, the existing Virtual Chassis configuration can remain powered on and
connected to the network. Before powering up the new switch, interconnect it to the
other the switches using the dedicated VCPs on the rear panel. Do not run the EZ Setup
program on the added member switch.
This example shows an existing Virtual Chassis configuration composed of two EX4200
switches. The Virtual Chassis configuration is being expanded to include a EX4200-24P
switch as a linecard member.
The topology for this example consists of:
• One EX4200-48P switch (SWA-0) with 48 access ports, all of which support Power
over Ethernet (PoE)
•
One EX4200-24T switch (SWA-1) with 24 access ports, including eight ports that
support PoE
953 Copyright © 2010, Juniper Networks, Inc.
Chapter 44: Virtual Chassis—Configuration Examples