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Gigabit Ethernet EOL PICs (T640 Router)

Figure 1: 2-Port Gigabit Ethernet PIC
2-Port Gigabit Ethernet PIC
Figure 2: 4-Port Gigabit Ethernet PIC
4-Port Gigabit Ethernet PIC

Software release

  • 2-port and 4-port: Junos OS Release 5.3 and later


  • Two or four Gigabit Ethernet ports

  • Power requirements:

    • 2-port: 0.35 A @ 48 V (17 W)

    • 4-port: 0.40 A @ 48 V (19.2 W)

  • Supports large Ethernet frame sizes for more efficient throughput across the intra-POP network

Hardware features

  • High-performance throughput on all ports at speeds up to 1 Gbps

  • Autonegotiation between Gigabit Ethernet circuit partners

  • Full-duplex mode

  • Maximum transmission units (MTUs) of up to 9192 bytes

Note: If you use a 4-port Gigabit Ethernet PIC on a Juniper Networks M160 router, the MTU will decrease to 4500 bytes.

Software features

  • Virtual Router Redundancy Protocol (VRRP) support

  • 802.1Q virtual LANs (VLANs) support

  • 64 source MAC address filters per port

  • 960 destination MAC filters per port

Cables and connectors

  • Duplex SC/PC connector (TX and RX)

  • 10-Gigabit Ethernet Fiber-optic fixed transceivers:

    • 2-port: 1000Base-LX

    • 2-port and 4-port: 1000Base-SX


Status LEDs, one bicolor:

  • Off—PIC not enabled

  • Green—PIC is operating normally

  • Red—PIC has an error or failure

Port LEDs, one pair per port:

  • Link—If green, the port is online; if there is no light, the port is down

  • Activity—If flashing green, the port is receiving data; if there is no light, the port might be on, but is not receiving data