| Physical Specifications |
| Dimensions (W x H x D) |
+ Width:
- 17.4 in (44.19 cm) for desktop installations
- 17.5 in (44.6 cm) with rack-mount brackets
+ Height: 1.75 in (4.45 cm) for 1U installations
+ Depth: 10.2 in (25.9 cm) |
| Backplane |
+ 80 Gbps Virtual Chassis interconnect to link up to four switches as a single logical device |
| Weight |
8.29 lb (3.76 kg) |
| 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 13,000 ft (3962 m) at 40° C according to GR-63
+ Non-operating altitude: up to 15,000 ft (4572 m)
+ Relative humidity operating: 10% to 85% (noncondensing)
+ Relative humidity non-operating: 0% to 95% (noncondensing) |
| Max. System Power Consumption (Input Power without PoE) |
80 W AC |
| Hardware Specifications |
| Switching Engine Model |
Store and forward |
| DRAM |
2 GB |
| Flash |
2 GB |
| CPU |
1.25GHz ARM CPU |
| GbE port density per system |
52 (48 host ports + four-port SFP/SFP+ uplinks) |
| Supported Optics |
+ 10/100/1000BASE-T connector type RJ-45
+ GbE SFP optic/connector type: RJ-45, or LC SFP fiber supporting 1000BASE-T SFP, SX (multimode), LX (singlemode), or LH (single-mode) |
| Physical Layer |
+ Physical port redundancy: Redundant trunk group (RTG)
+ Cable diagnostics for detecting cable breaks and shorts
+ Auto MDI/MDIX (medium-dependent interface/mediumdependent interface crossover) support
+ Port speed downshift/setting maximum advertised speed on 10/100/1000BASE-T ports
+ Digital optical monitoring for optical ports |
| Packet Switching Capacities |
176 Gbps |
| Layer 2 Throughput (Mpps) |
130 Mpps (wire speed) |
| Layer 2 Switching |
+ Maximum MAC addresses in hardware: 16,000
+ Jumbo frames: 9216 bytes
+ Number of VLANs supported: 4093
+ Range of possible VLAN IDs: 1-4094
+ Port-based VLAN
+ MAC-based VLAN
+ Voice VLAN
+ Layer 2 Tunneling Protocol (L2TP)
+ IEEE 802.1ak: Multiple VLAN Registration Protocol (MVRP)
+ Compatible with Per-VLAN Spanning Tree Plus (PVST+)
+ RVI (Routed VLAN Interface)
+ IEEE 802.1AB: Link Layer Discovery Protocol (LLDP)
+ LLDP-MED with VoIP integration
+ IEEE 802.1ad Q-in-Q tunneling
+ IEEE 802.1br: Bridge Port Extension
+ IEEE 802.1D: Spanning Tree Protocol
+ IEEE 802.1p: CoS Prioritization
+ IEEE 802.1Q: VLAN Tagging
+ IEEE 802.1Q-in-Q: VLAN Stacking
+ IEEE 802.1s: Multiple Spanning Tree Protocol (MSTP)
+ Number of MST instances supported: 64
+ Number of VSTP instances supported: 253
+ IEEE 802.1w: Rapid Spanning Tree Protocol (RSTP)
+ IEEE 802.1X: Port Access Control
+ IEEE 802.3: 10BASE-T
+ IEEE 802.3u: 100BASE-T
+ IEEE 802.3ab: 1000BASE-T
+ IEEE 802.3z: 1000BASE-X
+ IEEE 802.3af: PoE
+ IEEE 802.3at: PoE+
+ IEEE 802.3ad: Link Aggregation Control Protocol (LACP)
+ IEEE 802.3x: Pause Frames/Flow Control |
| Layer 3 Features: IPv4 |
+ Maximum number of ARP entries: 1,500
+ Maximum number of IPv4 unicast routes in hardware: 512 prefixes; 4,096 host routes
+ Maximum number of IPv4 multicast routes in hardware: 2,048 groups; 2,048 multicast routes
+ Routing Protocols: RIP v1/v2, OSPF v1/v2
+ Static routing
+ Routing policy
+ Bidirectional Forwarding Detection (BFD) with slow timers (> 3 sec)
+ IP directed broadcast |
| Layer 3 Features: IPv6 Management Functionality |
+ Maximum number of Neighbor Discovery (ND) entries: 1,500
+ Maximum number of IPv6 unicast routes in hardware: 512 prefixes; 2,048 host routes
+ Maximum number of IPv6 multicast routes in hardware: 1,024 groups; 1,024 multicast routes
+ Neighbor discovery, system logging, Telnet, SSH, SNMP, Network Time Protocol (NTP), Domain Name System (DNS)
+ Static routing
+ Routing protocols: RIPng, OSPF v3, Multica |
| Access control lists (ACLs) (Junos OS firewall filters) |
+ Port-based ACL (PACL)—256 ingress; 256 egress
+ VLAN-based ACL (VACL)— 256 ingress; 256 egress
+ Router-based ACL (RACL)—256 ingress; 512 egress
+ ACL entries (ACE) in hardware per system: 2,000
+ ACL counter for denied packets
+ ACL counter for permitted packets
+ Ability to add/remove/change ACL entries in middle of list (ACL editing)
+ L2-L4 ACL |
| Security |
+ MAC limiting
+ Allowed MAC addresses—configurable per port
+ Sticky MAC (persistent MAC address learning)
+ Dynamic ARP inspection (DAI)
+ Proxy ARP
+ Static ARP support
+ DHCP snooping
+ 802.1X port-based
+ 802.1X multiple supplicants
+ 802.1X with VLAN assignment
+ 802.1X with authentication bypass access (based on host MAC address)
+ 802.1X with VoIP VLAN support
+ 802.1X dynamic ACL based on RADIUS attributes
+ 802.1X Supported EAP types: Message Digest 5 (MD5), Transport Layer Security (TLS), Tunneled Transport Layer Security (TTLS), Protected Extensible Authentication Protocol (PEAP)
+ IPv6 RA Guard
+ IPv6 Neighbor Discovery Inspection
+ Captive Portal
+ Static MAC authentication
+ MAC-RADIUS
+ Control plane DoS protection
+ Fallback authentication
+ Trusted Network Connect (TNC) certified |
| Quality of Service (QoS) |
+ Layer 2 QoS
+ Layer 3 QoS
+ Ingress policing: one-rate two-color; two-rate three-color markers
+ Hardware queues per port: 8
+ Scheduling methods (egress): Strict Priority (SP), shapeddeficit weighted round-robin (SDWRR)
+ 802.1p, DSCP /IP precedence trust and marking
+ L2-L4 classification criteria: Interface, MAC address, EtherType, 802.1p, VLAN, IP address, DSCP/IP precedence, TCP/UDP port numbers
+ Congestion avoidance capabilities: Tail drop and WRED |
| Multicast |
+ IGMP snooping entries: 2,000
+ IGMP: v1, v2, v3
+ IGMP snooping
+ PIM-SM, PIM-SSM, PIM-DM
+ MLD snooping |
| Safety Certifications |
+ UL-UL60950-1 (Second Edition)
+ C-UL to CAN/CSA 22.2 No.60950-1 (Second Edition)
+ TUV/GS to EN 60950-1 (Second Edition)
+ CB-IEC60950-1 (Second Edition with all country deviations)
+ EN 60825-1 (Second Edition) |
| Electromagnetic Compatibility Certifications |
+ FCC 47CFR Part 15 Class A
+ EN 55022 Class A
+ ICES-003 Class A
+ VCCI Class A
+ AS/NZS CISPR 22 Class A
+ CISPR 22 Class A
+ EN 55024
+ EN 300386
+ CE |
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