Uplink Modules - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

Uplink Modules

Copyright © 2010, Juniper Networks, Inc.
redundancy. Typically, EX4200 switches are used in large branch offices, campus wiring
closets, and data centers where they can be positioned as the top device in a rack to
provide connectivity for all the devices in the rack.
You can connect individual EX4200 switches together to form one unit and manage the
unit as a single chassis, called a Virtual Chassis. You can add more member switches to
the Virtual Chassis as needed, up to a total of 10 members.
EX4200 switches are available in models with 24 or 48 ports and with either all ports
equipped for Power over Ethernet (PoE) or only 8 ports equipped for PoE. All models
provide ports that have 10/100/1000Base-T Gigabit Ethernet connectors and optional
1-gigabit small form-factor pluggable (SFP) transceivers, 10-gigabit small form-factor
pluggable (SFP+) transceivers, or 10-gigabit small form-factor pluggable (XFP)
transceivers for use with fiber connections.
Additionally, a 24-port model provides 100Base-FX/1000Base-X SFP ports. This model
is typically used as a small distribution switch.
All EX4200 switches have dedicated 64-Gbps Virtual Chassis ports that allow you to
connect the switches to each other. You can also use optional uplink module ports to
connect members of a Virtual Chassis across multiple wiring closets.
To provide carrier-class reliability, EX4200 switches include:
Dual redundant power supplies that are field-replaceable and hot-swappable. An
optional additional connection to an external power source is also available.
A field-replaceable fan tray with three fans. The switch remains operational if a single
fan fails.
Redundant Routing Engines in a Virtual Chassis configuration. This redundancy enables
graceful Routing Engine switchover (GRES) and nonstop active routing (NSR).
Junos OS with its modular design that enables failed system processes to gracefully
restart.
EX4200 switches have these features:
Run under Junos OS for EX Series switches
Have options of 24-port and 48-port models
Have options of full (all ports) or partial (8 ports) Power over Ethernet (PoE) capability
Have optional uplink modules that provide connection to distribution switches
Optional uplink modules are available for all EX4200 switches. Uplink modules provide
two 10-gigabit small form-factor pluggable (XFP) transceivers, four 1-gigabit small
form-factor pluggable (SFP) transceivers, or two 10-gigabit small form-factor pluggable
(SFP+) transceivers. You can use XFP, SFP, or SFP+ ports to connect an access switch
to a distribution switch or to interconnect member switches of a Virtual Chassis across
multiple wiring closets.
Chapter 2: Supported Hardware
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