Juniper EX4550 Hardware Guide

Table 67: Number of Switches and Switch Roles for an EX4500 Virtual Chassis, per Junos OS
Release
RoleNumber of SwitchesJunos OS Release
There must be a master and a backup.Up to 2 EX4500 switches11.1—11.3
There must be a master and a backup; the remaining switches must
be in the linecard role.
Up to 10 EX4500 switches11.4 or later
Table 68: Number of Switches and Switch Roles for an EX4550 Virtual Chassis, per Junos OS
Release
RoleNumber of SwitchesJunos OS Release
There must be a master and a backup; the remaining switches must
be in the linecard role.
Up to 10 EX4550 switches12.2 or later
Table 69: Number of Switches and Switch Roles for a Mixed EX4200, EX4500, and EX4550
Virtual Chassis, per Junos OS Release
RoleNumber of SwitchesJunos OS Release
EX4500 switches must be in the master and backup roles and
EX4200 switches in the linecard role.
Up to 2 EX4500 switches and
up to 8 EX4200 switches
11.1
Master and backup must be of the same switch type—either both
EX4200 or both EX4500 switches. The remaining switches must be
in the linecard role.
Up to 2 EX4500 switches and
up to 8 EX4200 switches
11.2, 11.3
Any switch type in any role. There must be a master and a backup
and the remaining switches must be in the linecard role.
Up to 10 total of both EX4200
and EX4500 switches
11.4 or later
Any switch type in any role. There must be a master and a backup
and the remaining switches must be in the linecard role.
Up to 10 total of EX4200,
EX4500, and EX4550
switches
12.2 or later
Virtual Chassis Module
Virtual Chassis modules are available for EX4500 and EX4550 switches. However,
installing a Victual Chassis module is not mandatory for using these switches in a Virtual
Chassis configuration.
NOTE: On EX4500 switches that are running Junos OS releases earlier than
Release 11.4R1, you must install a Virtual Chassis module for using the switch
in a Virtual Chassis configuration. Starting with Release 11.4R1, you can use
uplink port connections to interconnect EX4500 member switches into a
Virtual Chassis.
137Copyright © 2015, Juniper Networks, Inc.
Chapter 10: Planning the Virtual Chassis

Juniper EX4550 Specifications

Console Connection Settings

baud rate	9600
data bits	8
stop bits	1