Thông Số Kỹ Thuật EX4300-24T
| Physical Specifications | |
| Backplane | 320 Gbps Virtual Chassis interconnect to combine up to 10 units as a single logical device |
| Uplink Module Options | 4-port dual-mode 10GbE/1GbE module with pluggable SFP+/SFP optics |
| Power Options | • Power supplies: Autosensing; 100-120 V/200-240 V; AC 350 W AFO, dual loadsharing hot-swappable internal redundant power supplies • Maximum current inrush: 50 amps • 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: 17.5 in, (44.5 cm) • Height: 1 U |
| System Weight | • EX4300 switch (with no power supply or fan module): 13 lb (5.9 kg) • EX4300 switch (with single power supply and two fan modules): 16.1 lb (7.3 kg) • 350 W AC power supply: 2.4 lb (1.1 kg) • SFP+ uplink module: 0.44 lb (0.2 kg) • Fan module: 0.33 lb (0.15 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 fans: 2 • Airflow: PSU-7.5 cubic feet per minute (CFM); fan-22 CFM • Total maximum airflow throughput with two power supplies: 59 CFM |
| Hardware Specifications | |
| Switching Engine Model | Store and forward |
| DRAM | 2 GB with ECC |
| Flash | 2 GB |
| CPU | 1.5 GHz Dual-Core PowerPC CPU |
| GbE port density per system | 32 (24 host ports + four 40GbE ports + optional four-port 1/10GbE uplink module) |
| Physical Layer | • Time domain reflectometry (TDR) for detecting cable breaks and shorts • Auto medium-dependent interface/medium-dependent interface crossover (MDI/MDIX) support • Port speed downshift/setting maximum advertised speed on 10/100/1000BASE-T ports • Digital optical monitoring for optical ports |
| 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) | 448 Gbps |
| Software Specifications | |
| Layer 2/Layer 3 Throughput (Mpps) (Maximum with 64 Byte Packets) | 333 Mpps (wire speed) |
| 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 • Distributed denial of service (DDoS) protection (CPU control path flooding protection) |
| Layer 2 Features | • Maximum MAC addresses per system: 64,000 • Jumbo frames: 9216 Bytes • Number of VLANs supported: 4093 • Range of possible VLAN IDs: 1 to 4094 • Virtual Spanning Tree (VST) instances: 510 • Port-based VLAN • Voice VLAN • Physical port redundancy: Redundant trunk group (RTG) • Compatible with Per-VLAN Spanning Tree Plus (PVST+) • Routed VLAN Interface (RVI) • Uplink Failure Detection (UFD) • ITU-T G.8032: Ethernet Ring Protection Switching • IEEE 802.1AB: Link Layer Discovery Protocol (LLDP) • LLDP-MED with VoIP integration • Default VLAN and multiple VLAN range support • MAC learning disable • Persistent MAC learning (sticky MAC) • MAC notification • Private VLANs (PVLANs) • Explicit congestion notification (ECN) • Layer 2 protocol tunneling (L2PT) • IEEE 802.1ak: Multiple VLAN Registration Protocol (MVRP) • IEEE 802.1p: CoS prioritization • IEEE 802.1Q: VLAN tagging • 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 802.3ba: 40-Gigabit Ethernet • IEEE 802.3af: Power over Ethernet • IEEE 802.3at: Power over Ethernet Plus • IEEE 802.3x: Pause Frames/Flow Control • IEEE 802.3ah: Ethernet in the First Mile |
| Spanning Tree | • IEEE 802.1D: Spanning Tree Protocol • IEEE 802.1s: Multiple instances of Spanning Tree Protocol (MSTP) • Number of MST instances supported: 64 • Number of VLAN Spanning Tree Protocol (VSTP) instances supported: 510 • IEEE 802.1w: Rapid reconfiguration of Spanning Tree Protocol |
| Link Aggregation | • IEEE 802.3ad: Link Aggregation Control Protocol • 802.3ad (LACP) support: – Number of LAGs supported: 128 – Maximum number of ports per LAG: 16 • LAG load-sharing algorithm bridged or routed (unicast or multicast) traffic: – IP: S/D IP – TCP/UDP: S/D IP, S/D Port – Non-IP: S/D MAC • Tagged ports support in LAG |
| Layer 3 Features: IPv4 | • Maximum number of ARP entries: 64,000 • Maximum number of IPv4 unicast routes in hardware: 16,000 prefixes; 32,000 host routes • Maximum number of IPv4 multicast routes in hardware: 8000 multicast groups; 16,000 multicast routes • Routing protocols: RIPv1/v2, OSPF, BGP, IS-IS • Static routing • Routing policy • Bidirectional Forwarding Detection (BFD) • L3 redundancy: Virtual Router Redundancy Protocol (VRRP) |
| Layer 3 Features: IPv6 | • Maximum number of Neighbor Discovery (ND) entries: 32,000 • Maximum number of IPv6 unicast routes in hardware: 4000 prefixes; 15,000 host routes • Maximum number of IPv6 multicast routes in hardware: 8000 multicast groups; 16,000 multicast routes • Routing protocols: RIPng, OSPFv3, IPv6, ISIS • 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: – Port-based ACL (PACL) ingress: 3072 – VLAN-based ACL (VACL) ingress: 3500 – Router-based ACL (RACL) ingress: 7000 – gress shared across PACL and VACL: 512 – Egress across RACL: 1024 – 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 |
| Access Security | • 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 Extensible Authentication Protocol (EAP types): Message Digest 5 (MD5), Transport Layer Security (TLS), Tunneled TLS (TTLS), Protected Extensible Authenticated Protocol (PEAP) • MAC authentication (RADIUS) • Control plane DoS protection • Radius functionality over IPv6 for authentication, authorization, and accounting (AAA) • DHCPv6 snooping • IPv6 neighbor discovery • IPv6 source guard • IPv6 RA guard • IPv6 Neighbor Discovery Inspection • Media Access Control security (MACsec) |
| High Availability | • Redundant, hot-swappable power supplies • Redundant, field-replaceable, hot-swappable fans • Graceful Routing 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 • Nonstop bridging: LACP, xSTP • Nonstop routing: PIM, OSPF v2 and v3, RIP v2, RIPnG, BGP, BGPv6, ISIS, IGMP v1, v2, v3 • Online insertion and removal (OIR) uplink module |
| Quality of Service (QoS) | • L2 QoS • L3 QoS • Ingress policing: 1 rate 2 color • Hardware queues per port: 12 • Scheduling methods (egress): Strict priority (SP), WDRR • 802.1p, DiffCode (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, and more • Congestion avoidance capabilities: Tail drop, weighted random early detection (WRED) |
| Multicast | • IGMP: v1, v2, v3 • IGMP snooping • Multicast Listener Discovery (MLD) 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: Juniper Networks Network and Security Manager (NSM) • Remote performance monitoring • Proactive services support via Advanced Insight Solutions (AIS) • SNMP: v1, v2c, v3 • RMON (RFC 2819) Groups 1, 2, 3, 9 • Network Time Protocol (NTP) • DHCP server • DHCP client and DHCP proxy • DHCP relay and helper • DHCP local server support • RADIUS • Junos Space Service Now for automated fault detection, simplified trouble ticket management, and streamlined operations • TACACS+ • SSHv2 • Secure copy • HTTP/HTTPs • Domain Name System (DNS) resolver • System logging • Temperature sensor • Configuration backup via FTP/secure copy |
| 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 • EN 60950-1 (2006 +A1:2009+A12:2010) Information Technology Equipment—Safety • IEC 60950-1 (2005 +A1:2009) Information Technology Equipment—Safety |
| 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-1089-Core: EMC and Electrical Safety for Network Telecommunications Equipment |
| Environmental | Reduction of Hazardous Substances (ROHS) 6/6 |
| Telco | • CLEI code |
| Acoustic Noise in DBA | 38.5 |
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