Thông số kỹ thuật Switch Juniper EX2200-48P-4G

Physical Specifications
Dimensions (W x H x D)	• Width: 17.4 in (44.1 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 in (25.43 cm)
Weight	10 lb (4.5 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 10,000 ft (3,048 m) • Non-operating altitude: up to 16,000 ft (4,877 m) • Relative humidity operating: 10% to 85% (noncondensing) • Relative humidity non-operating: 0% to 95% (noncondensing)
Power Options	91 W AC
Total PoE Power Budget	405 W
Hardware Specifications
Switching Engine Model	Store and forward
DRAM	512 MB
Flash	1 GB
CPU	800 MHz ARM CPU
GbE port density per system	52 (48 host ports+ four-port GbE uplinks)
Physical Layer	• Physical port redundancy: Redundant Trunk Group (RTG) • Time-domain reflectometry (TDR) 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	104 Gbps
Layer 2 Throughput (Mpps)	77.4 Mpps (wire speed)
Layer 2 Switching	• Maximum MAC addresses in hardware: 16,000 • Jumbo frames: 9216 bytes • Number of VLANs: 1,024 (VLAN IDs: 4,096) • Port-based VLAN • MAC-based VLAN • Voice VLAN • Private VLAN (PVLAN) • IEEE 802.1ak: Multiple VLAN Registration Protocol (MVRP) • Multicast VLAN Registration (MVR) • 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 802.1D: 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 • 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 802.3x: Pause Frames/Flow Control • IEEE 802.3ad: Link Aggregation Control Protocol (LACP) • IEEE 802.3ah: Ethernet in the First Mile • IEEE 802.1ag: Connectivity Fault Management (CFM) • G.8032 (Ethernet Ring Protection)
Layer 3 Features: IPv4	• Maximum number of Address Resolution Protocol (ARP) entries: 2,000 • Maximum number of IPv4 unicast routes in hardware: 6500 • Routing protocols: • RIP v1/v2 • OSPF v1/v2 (with 4 active interfaces) • Static routing • Bidirectional Forwarding Detection (BFD) • IP directed broadcast • VRF-Lite
Layer 3 Features: IPv6 Management Functionality	• Neighbor discovery, Syslog, Telnet, SSH, J-Web, SNMP, NTP, DNS • Static routing
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 • IP source guard • 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) • Captive Portal • Trusted Network Connect (TNC) certified • Static MAC authentication • MAC-RADIUS • Control plane DoS protection • Fallback Authentication
Access control lists (ACLs) (Junos OS firewall filters)	• Port-based ACL (PACL)—ingress • VLAN-based ACL (VACL)—ingress and egress • Router-based ACL (RACL)—ingress and egress • ACL entries (ACE) in hardware per system: 1,500 • 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
High Availability	• External redundant power system (RPS) option • Link Aggregation • 802.3ad (LACP) support: – Number of LAGs supported: 32 – Maximum number of ports per LAG: 8 • LAG load sharing algorithm—Bridged Unicast Traffic: – IP: S/D MAC, S/D IP – TCP/UDP: S/D MAC, S/D IP, S/D Port – Non-IP: S/D MAC • LAG sharing algorithm—Routed Unicast Traffic: – IP: S/D IP – TCP/UDP: S/D IP, S/D Port • LAG load sharing algorithm—Bridged Multicast Traffic: – IP: S/D MAC, S/D IP – TCP/UDP: S/D MAC, S/D IP, S/D Port – Non-IP: S/D MAC • LAG sharing algorithm—Routed Multicast Traffic: – IP: S/D IP – TCP/UDP: S/D IP, S/D Port • Tagged ports support in LAG • Uplink Failure Detection (UFD)
Quality of Service (QoS)	• Layer 2 QoS • Layer 3 QoS • Ingress policing: 1 rate 2 color • Hardware queues per port: 8 • Scheduling methods (egress): Strict Priority (SP), shaped deficit 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
Multicast	• IGMP snooping entries: 1,000 • IGMP: v1, v2, v3 • IGMP snooping • PIM-SM, PIM-SSM, PIM-DM
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
NEBS	• GR-63-Core: NEBS, Physical Protection • GR-1089-Core: EMC and Electrical Safety for Network Telecommunications Equipment • All models except EX2200-24P-4G, EX2200-48P-4G and EX2200-24T-4G-DC
Acoustic Noise in DBA	38.1