Juniper EX4300-48T-DC

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EX4300-48T-DC

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

56 (48 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)

496 Gbps

Software Specifications

Layer 2/Layer 3 Throughput (Mpps) (Maximum with 64 Byte Packets)

369 Mpps (wire speed)

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: 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

Multicast

• IGMP: v1, v2, v3 
• IGMP snooping 
• Multicast Listener Discovery (MLD) snooping 
• PIM-SM, PIM-SSM, PIM-DM