| Datasheet EX3400-48T-DC | 
		
			| Physical Specifications | 
		
			| Dimensions (W x H x D) | 17.36 x 1.72 x 15.05 in (44.1 x 4.37 x 38.24 cm) | 
		
			| Backplane | 160 Gbps (with QSFP+ ports) or 80 Gbps (with SFP+ ports) Virtual Chassis interconnect to link up to 10 switches as a single logical device | 
		
			| Uplink | Fixed 4-port uplinks can be individually configured as GbE (SFP) or 10GbE (SFP+) ports; 2 x 40G QSFP+ ports | 
		
			| Environmental Ranges | + Operating temperature: 32° to 113° F (0° to 45° C) + Storage temperature: -40° to 158° F (-40° to 70° C)
 + Operating altitude: up to 10,000 ft (3048 m)
 + Nonoperating altitude: up to 16,000 ft (4877 m)
 + Relative humidity operating: 10% to 85% (noncondensing)
 + Relative humidity nonoperating: 0% to 95% (noncondensing)
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			| Hardware Specifications | 
		
			| DRAM | 2 GB with ECC | 
		
			| Flash | 2 GB | 
		
			| CPU | Dual Core 1 GHz | 
		
			| GbE port density per system | 48host ports + four 1/10 GbE and two 40GbE uplink ports | 
		
			| Packet-Switching Capacities (Maximum with 64-Byte Packets) | 168 Gbps (unidirectional)/336 Gbps (bidirectional) | 
		
			| Software Specifications | 
		
			| Layer 2/Layer 3 Throughput (Mpps) (Maximum with 64 Byte Packets) | 250 Mpps | 
		
			| Layer 2 Features | + Maximum MAC addresses per system: 32,000+ Jumbo frames: 9216 bytes
 + Number of VLANs supported: 4,096
 + Range of possible VLAN IDs: 1-4094
 + Port-based VLAN
 + MAC-based VLAN
 + Voice VLAN
 + Layer 2 Tunneling Protocol (L2TP)
 + Compatible with Per-VLAN Spanning Tree Plus (PVST+)
 + RVI (routed VLAN interface)
 + Persistent MAC (sticky MAC)
 + RSTP and VSTP running concurrently
 + IEEE 802.1AB: Link Layer Discovery Protocol (LLDP)
 + LLDP-MED with VoIP integration
 + IEEE 802.1ae Media Access Control Security (MACsec)
 + IEEE 802.1ak Multiple VLAN Registration Protocol (MVRP)
 + IEEE 802.1br: Bridge Port Extension
 + IEEE 802.1D: Spanning Tree Protocol
 + IEEE 802.1p: CoS prioritization
 + IEEE 802.1Q-in-Q: VLAN stacking
 + IEEE 802.1Q: VLAN tagging
 + IEEE 802.1s: Multiple Spanning Tree Protocol (MSTP)
 + Number of MST instances supported: 64
 + Number of VSTP instances supported: 510
 + IEEE 802.1w: Rapid Spanning Tree Protocol (RSTP)
 + IEEE 802.1X: Port access control
 + IEEE 802.3: 10BASE-T
 + IEEE 802.3ab: 1000BASE-T
 + IEEE 802.3ad: Link Aggregation Control Protocol (LACP)
 + IEEE 802.1ad Q-in-Q tunneling
 + IEEE 802.3ae: 10-Gigabit Ethernet
 + IEEE 802.3u: 100BASE-T
 + IEEE 802.3z: 1000BASE-X
 + IEEE 802.3x: Pause Frames/Flow Control
 + Layer 3 VLAN-tagged subinterface
 + PVLAN support
 + Multicast VLAN routing
 + Adding/removing single tag
 + Filter-based SVLAN tagging
 + Flexible CoS (outer .1P marking)
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			| Layer 3 Features: IPv4 | + Maximum number of ARP entries: 16,000 + Maximum number of IPv4 unicast routes in hardware: 14,000 prefixes; 36,000 host routes
 + Maximum number of IPv4 multicast routes in hardware: 18,000 groups; 4,000 multicast routes
 + Routing Protocols: RIP v1/v2, OSPF v2
 + Static routing
 + Layer 3 redundancy: VRRP
 + IP directed broadcast—traffic forwarding
 + Virtual router (VRF-Lite) supporting RIP, OSPF
 + Routing policy
 + Filter-based forwarding (FBF)
 + Unicast reverse-path forwarding
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			| Layer 3 Features: IPv6 | + Maximum number of Neighbor Discovery entries: 8,000 + Maximum number of IPv6 unicast routes in hardware: 3,500 prefixes; 18,000 host routes
 + Maximum number of IPv6 multicast routes in hardware: 9,000 groups; 2,000 multicast routes
 + Neighbor discovery, system logging, Telnet, SSH, Junos Web, SNMP, Network Time Protocol (NTP), Domain Name System (DNS)
 + Routing protocols: RIPng, OSPF v3
 + Static routing
 + IPv6 ACL (PACL, VACL, RACL)
 + IPv6 CoS (BA, MF classification and rewrite, scheduling based on TC)
 + MLDv1/v2 snooping
 + IPv6 ping, traceroute
 + IPv6 stateless auto-configuration
 + IPv6 Layer 3 forwarding in hardware
 + IPv6 Layer 3 redundancy: VRRP v6
 + Virtual Router support for IPv6 unicast
 + PIM for IPv6 multicast
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