United States
Q
What are the key features and specifications of the Juniper EX3400 Series Ethernet Switches?
A
The EX3400 Series offers enterprise-grade access switching with 24 or 48 1GbE ports, optional PoE/PoE+, four modular uplink slots, 1.44 Tbps switching capacity, Junos OS, and Virtual Chassis stacking up to ten units.
Q
What port configurations and PoE options does the EX3400 offer?
A
Available in 24- or 48-port 10/100/1000 models, with PoE (15.4 W) or PoE+ (30 W) support. The total power budget scales to 1,800 W per chassis and is configurable per port.
Q
How does Virtual Chassis technology work on EX3400 switches?
A
EX3400 Virtual Chassis links up to ten switches over QSFP+ ports, operating as a single logical device with a unified control plane, simplified management, and non-blocking backplane performance.
Q
What is the maximum switching capacity and forwarding rate of the EX3400?
A
Each EX3400 delivers 1.44 Tbps of switching capacity and up to 1.07 Bpps forwarding rate, ensuring wire-speed performance across all ports.
Q
Can the EX3400 support Power over Ethernet (PoE) and PoE+?
A
Yes. Models support IEEE 802.3af PoE (15.4 W) and IEEE 802.3at PoE+ (30 W) with a total power budget up to 1,800 W, configurable on a per-port basis.
Q
How energy efficient is the EX3400 Series and what power-saving features are available?
A
The EX3400 uses Energy Efficient Ethernet, adaptive port power management, variable-speed fans, and sleep mode on unused ports, reducing power consumption by up to 35%.
Q
What operating system and software features are available on the EX3400?
A
Runs Junos OS with a universal image supporting EVPN, VXLAN, ML-AG, BGP, OSPF, MPLS, Junos Fusion, advanced security, and automation via NETCONF/RESTCONF APIs.
Q
How scalable is the EX3400 Series for campus and branch deployments?
A
With stacking up to ten units and four uplink modules per chassis, the EX3400 scales from small branches to large campus access deployments with up to 480 access ports.
Q
What uplink options are supported on the EX3400 Series?
A
Four dedicated modular slots support 1/10 GbE SFP/SFP+, 40 GbE QSFP+, and 25/100 GbE (with compatible modules), enabling flexible aggregation.
Q
What security features are included in the EX3400 switches?
A
Includes IP source guard, DHCP snooping, dynamic ARP inspection, MACsec encryption, 802.1X, uRPF, advanced ACLs, Juniper Sky ATP integration, and denial-of-service protection.
Q
How do I configure a basic Virtual Chassis setup on the EX3400?
A
Connect stacking cables to QSFP+ ports, assign unique node IDs, enable Virtual Chassis in Junos configuration, commit changes, and verify with “show virtual-chassis status.”
Q
What warranty and support options are available for the EX3400 Series?
A
Includes a one-year limited hardware warranty and 90-day software support. Juniper Care NOC-to-NOC support, hardware replacement, and software updates are available as paid options.
Q
Are there any license requirements for advanced features on the EX3400?
A
EX3400 uses a universal software image; base features are included. Advanced feature licenses (security, ASEC, EVPN) can be activated with license keys.
Q
How does the EX3400 integrate with Juniper Mist AI and cloud management?
A
Integrates with Juniper Mist for cloud-based switching management, AI-driven insights, automated assurance, location services, and OpenConfig support via Junos Cloud.
Q
What are the typical use cases for the EX3400 Series Ethernet Switches?
A
Ideal for enterprise campus access, branch offices, SMB networks, PoE-powered device connectivity, and converged wired/wireless deployments requiring high availability and security.
Q
How can I upgrade firmware on the EX3400 switch?
A
Upload the Junos OS package via SCP, run “request system software add <package> no-validate,” reboot, and verify the new version with “show version.”
