Juniper EX4400 - Virtual Chassis

Support for IEEE 802.3bt Power over Ethernet (PoE-bt)—The RJ-45 ports in EX4400-24P,
EX4400-24MP, EX4400-48P, and EX4400-48MP switches support IEEE 802.3bt (PoE-bt), providing
power of up to 90 W per port. These ports also support fast PoE and Perpetual PoE.
Compact soluon—The EX4400 switch is a modular single rack unit (1-U) device that is an apt soluon
for crowded wiring closets and access switch locaons. The switch provides carrier-class reliability of
modular systems with the economics and exibility of stackable plaorms.
High availability—EX4400 switches provide high availability through redundant power supplies and fans,
graceful Roung Engine switchover (GRES), and nonstop bridging (NSB) and nonstop acve roung
(NSR) when deployed in a Virtual Chassis conguraon.
EX4400 Switch Models
EX4400 line of switches consist of both PoE and non-PoE models and mulgigabit port models. These
switches run on either AC or DC power and support either back-to-front or front-to-back airow. Table
4 on page 10 provides a summary of the EX4400 switch models. Click on each link in the table to nd
more informaon about the model.
Table 4: EX4400 Switch Models
Non-PoE Models PoE Models Mulgigabit Models
"EX4400-24T" on page 21 "EX4400-24P" on page 17 "EX4400-24MP" on page 52
"EX4400-24X" on page 28 "EX4400-48P" on page 41 "EX4400-48MP" on page 56
"EX4400-48T" on page 45
"EX4400-48F" on page 34
Virtual Chassis
You can use the quad small form-factor pluggable 28 (QSFP28) ports to interconnect a maximum of 10
EX4400 switches to form a Virtual Chassis. On EX4400 switch models except EX4400-24X, the
QSFP28 ports are on the rear panel. On the EX4400-24X model, the QSFP28 ports are on the front
panel.
On EX4400 switch models except EX4400-24X, the QSFP28 ports are congured as Virtual Chassis
ports (VCPs) by default. Each of the two QSFP28 ports operates as two logical 50-Gbps VCP interfaces.
On the EX4400-24X model, you can congure the QSFP28 ports as VCPs by using the request virtual-
chassis mode network-port CLI command.
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