Thông số kỹ thuật Switch Juniper EX4200-24TEX4200-24T

Physical Specifications
Dimensions (W x H x D)	• Backplane: 128 Gbps Virtual Chassis interconnect to combine up to 10 units as a single logical device • Uplink module options: – 4-port GbE module with pluggable SFP optics – 2-port 10GbE module with pluggable XFP optics – Dual-mode 2-port 10GbE SFP+ / 4-port GbE SFP module with pluggable SFP+/SFP optics – Dual-mode 2-port 10GbE SFP+ / 4-port GbE SFP module with pluggable SFP+/SFP optics and MACsec support
Power Options	• Power supplies: Autosensing; 100-120 V / 200-240 V; AC 320 W, 600 W and 930 W dual load-sharing hotswappable internal redundant power supplies • Maximum current inrush: 50 amps • DC power supply: 190 W DC, input voltage range 36 V – 72 V, dual input feed, dual load-sharing hot-swappable internal redundant power supplies • Minimum number of PSUs required for fully loaded chassis: 1 per switch
Dimensions (W x H x D)	• 17.41 x 1.72 x 16.43 in (44.21 x 4.32 x 41.73 cm) • Desktop installation width noted above, rack-mount width is 17.5 in (44.5 cm) • Height: 1 RU • Depth with 320 W AC PSU and 190 W DC PSU noted above, 18.8 in (47.8 cm) with 600/930 W AC PSU
System Weight	16.5 lb (7.5 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 (3,049 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)
Cooling	• Field-replaceable fan tray with multiple blowers (3) • Switch remains operational even if one blower fails • Airflow: 20.3 cfm
Hardware Specifications
Switching Engine Model	Store and forward
DRAM	1 GB with ECC
Flash	1 GB
CPU	1 GHz PowerPC CPU
GbE port density per system	24 host ports + four 1/10 GbE
Physical Layer	• Time Domain Reflectometry (TDR) for detecting cable breaks and shorts: 24P/24T and 48P/48T only • Auto MDI/MDIX support: 24P/24T and 48P/48T only (all ports) • Port speed downshift/setting max advertised speed on 10/100/1000BASE-T ports: 24P/24T and 48P/48T only, on all ports • Digital optical monitoring for optical ports
Packet-Switching Capacities (Maximum with 64-Byte Packets)	88 Gbps
Aggregate Switch Capacities (Maximum with 64 Byte Packets)	216 Gbps
Software Specifications
Layer 2/Layer 3 Throughput (Mpps) (Maximum with 64 Byte Packets)	65 Mpps (wire speed)
Layer 2 Features	• Max MAC addresses per system: 32,000 • Jumbo frames: 9216 Bytes • Number of VLANs: 4,096 • VST instances: 253 • Port-based VLAN • MAC-based VLAN • GVRP • Voice VLAN • Physical port redundancy: Redundant trunk group (RTG) • Compatible with PVST+ • RVI (Routed VLAN Interface) • Multicast VLAN Registration (MVR) • IEEE 802.1ak Multiple VLAN Registration Protocol (MVRP) • 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 802.1s: Multiple instances of Spanning Tree Protocol (MSTP) • Number of MST instances supported: 64 • Number of VSTP instances supported: 253 • IEEE 802.1w: Rapid reconfiguration of Spanning Tree Protocol • IEEE 802.1X: Port Access Control • IEEE 802.1ak: Multiple Registration Protocol • IEEE 802.3: 10BASE-T • IEEE 802.3u: 100BASE-T • IEEE 802.3ab: 1000BASE-T • IEEE 802.3z: 1000BASE-X • IEEE 802.3ae: 10 Gigabit Ethernet • IEEE 802.3af: Power over Ethernet • IEEE 802.3x: Pause Frames/Flow Control • IEEE 802.3ad: Link Aggregation Control Protocol • IEEE 802.3ah: Ethernet in the First Mile • Metro – PVLAN support – IEEE 802.1ag connectivity fault management – ITU-T G803.2 – ITU-T Y.1731 – IEEE 802.1ad Q-in-Q – Multicast VLAN routing
Layer 3 Features: IPv4	• Max number of ARP entries: 16,000 • Max number of IPv4 unicast routes in hardware: 16,000 • Max number of IPv4 multicast routes in hardware: 8,000 • Routing protocols: RIPv1/v2, OSPF, BGP, IS-IS • Static routing • Routing policy • Bidirectional Forwarding Detection • Layer 3 redundancy: VRRP • IPv4/v6 GRE tunneling
Layer 3 Features: IPv6	• Max number of Neighbor Discovery (ND) entries: 16,000 (shared with IPv4) • Max number of IPv6 unicast routes in hardware: 4,000 • Max number of IPv6 multicast routes in hardware: 2,000 • Routing protocols: RIPng, OSPFv3, IPv6, ISIS, BGP4+, PIM, MLD, MLDv2 • Static routing
Access control lists (ACLs) (Junos OS firewall filters)	• Port-based ACL (PACL) – Ingress and Egress • VLAN-based ACL (VACL) – Ingress and Egress • Router-based ACL (RACL) – Ingress and Egress • ACL entries (ACE) in hardware per system: 7,000 • ACL counter for denied packets • ACL counter for permitted packets • Ability to add/remove/change ACL entries in middle of list (ACL editing) • Layer 2 – L4 ACL • 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: MD5, TLS, TTLS, PEAP • TNC certified • MAC Authentication (RADIUS) • Control Plane DoS protection
Access Security	• MAC limiting (per port and per VLAN) • Allowed MAC addresses – configurable per port • Dynamic ARP inspection (DAI) • IP source guard • Local proxy ARP • Static ARP support • DHCP snooping • Captive Portal • Persistent MAC address configurations • DDoS protection (CPU control path flooding protection)
High Availability	• Non-Stop Routing (NSR) – PIM, OSPF v2 and v3, RIP v2, RIPnG, BGP, BGPv6, ISIS, IGMP v1, v2, v3 • Non-Stop Software Upgrade (NSSU) • Redundant, hot-swappable power supplies • Redundant, field-replaceable, hot-swappable fans • Graceful Route Engine Switchover (GRES) for Layer 2 hitless forwarding and Layer 3 protocols on RE failover • Graceful protocol restart – OSPF, BGP • Layer 2 hitless forwarding on RE failover • Online insertion and removal (OIR) uplink module • Non-Stop Bridging (NSB) – LACP
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 • Layer 2-4 classification criteria: Interface, MAC address, Ethertype, 802.1p, VLAN, IP address, DSCP/IP Precedence, TCP/UDP port numbers, etc. • Congestion avoidance capabilities: Tail Drop
Multicast	• IGMP: v1, v2, v3 • IGMP snooping • PIM-SM, PIM-SSM, PIM-DM
Services and Manageability	• Junos OS CLI • Web interface • Out-of-band management: Serial; 10/100/1000BASE-T Ethernet • ASCII configuration • Rescue configuration • Configuration rollback • Image rollback • LCD management • Element management tools: Network and Security Manager (NSM) • Remote performance monitoring • Junos SDK • Proactive services support via Advanced Insight Solutions (AIS) • SNMP: v1, v2c, v3 • RMON (RFC 2819) Groups 1, 2, 3, 9 • NTP • DHCP server • DHCP client and DHCP proxy • DHCP relay and helper • DHCP local server support • RADIUS • Service Now for automated fault detection, simplified trouble ticket management and streamlined operations • TACACS+ • SSHv2 • Secure copy • HTTP/HTTPs • DNS resolver • Syslog logging • Temperature sensor • Config-backup via FTP / secure copy • Interface range specification • Port profile associations
Safety and Compliance
Safety Certifications	• UL-UL60950-1(First Edition) • C-UL to CAN/CSA 22.2 No. 60950-1 (First Edition) • TUV/GS to EN 60950-1, Amendment A1-A4, A11 • CB-IEC60950-1, all country deviations
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 EX4200-24P and EX4200-48P
Environmental	Reduction of Hazardous Substances (ROHS) 5
Telco	• CLEI code
Acoustic Noise in DBA	51.6