Master Role - Juniper EX9200 Features Manual

Master Role

Copyright © 2017, Juniper Networks, Inc.
EX3300 switches, through uplink ports
NOTE: Uplink ports 2 and 3 on EX3300 switches are configured as VCPs
by default.
EX3400 switches, through uplink ports
NOTE: All QSFP+ uplink ports on EX3400 switches are configured as VCPs
by default, or you can configure the SFP or SFP+ uplink ports as VCPs.
EX4200 switches, through uplink module ports (SFP, SFP+, or XFP) or through an
SFP+ port on the EX4200-24F switch
EX4300 switches, through uplink ports
NOTE: All QSFP+ ports on EX4300 switches are configured as VCPs by
default.
EX4500 switches, through any SFP+ port configured as a VCP
EX4550 switches, through any SFP+ port configured as a VCP
EX4600 switches, through SFP+ and QSFP+ ports configured as VCPs
All supported SFP, SFP+, and XFP uplink connections between EX4200, EX4500, and
EX4550 switches can be configured as VCPs.
You can increase the Virtual Chassis bandwidth between member switches by configuring
multiple optical ports connecting the switches as VCPs. The optical ports configured as
VCPs automatically form a Link Aggregation Group (LAG) bundle. See Understanding EX
Series Virtual Chassis Port Link Aggregation.
The member that functions in the master role in the Virtual Chassis:
Manages the member switches.
Runs Junos OS for EX Series switches in a master role.
Runs the chassis management processes and control protocols.
Represents all the member switches interconnected within the Virtual Chassis
configuration. (The hostname and other properties that you assign to this switch during
setup apply to all members of the Virtual Chassis configuration.)
When an EX Series switch that supports Virtual Chassis is powered on as a standalone
switch, it is considered the master member. In a Virtual Chassis, one member functions
as the master and a second member functions as the backup:
Chapter 1: Virtual Chassis Overview
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