Giới thiệu
Bộ chuyển mạch Juniper EX4200-24T được thiết kế để phù hợp với lớp Accees (lớp truy nhập mạng đầu cuối) với chi phí đầu tư thấp nhất trong dòng Switch 4200 Series. Bộ chuyển mạch Juniper EX4200-24Tcung cấp 24 cổng Ethernet Gigabit ( trong đó gồm có 8 cổng hỗ trợ PoE) để kết nối với cáp quang Multimode hoặc Singlemode. Switch EX4200-24T sử dụng nguồn điện AC 320W.
Bộ chuyển mạch Juniper EX4200-24T với công nghệ Virtual Chassis kết hợp sẵn có cho phép 10 thiết bị chuyển mạch được kết nối với nhau qua các cổng uplink và được quản lý như một thiết bị duy nhất, cung cấp một giải pháp với khả năng mở rộng và nâng cấp cho các doanh nghiệp.
Thông số kỹ thuật
| 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 |
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Safety and Compliance |
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| 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 |
| Physical Specifications | |
| 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 |