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    Fast Ethernet PICs (M40e Router)

    Figure 1: 4-Port Fast Ethernet PIC

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    Figure 2: 8-Port Fast Ethernet PIC

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    Figure 3: 12-Port Fast Ethernet PIC

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    Figure 4: 48-Port Fast Ethernet PIC

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    Figure 5: VHDCI-to-RJ-21 Cable

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    Software release

    • 4-port, 8-port, 48-port: Junos OS Release 5.2 and later
    • 12-port: Junos OS Release 5.4 and later

    For information on which FPCs support these PICs, seePIC/FPC Compatibility (M40e Router).


    • 4 100Base-TX ports
    • 8 100Base-FX ports
    • 12 100Base-TX ports
    • 48 100Base-TX ports
    • Power requirement:
      • 4-port: 0.14 A @ 48 V (6.8 W)
      • 8-port: 0.26 A @ 48 V (12.5 W)
      • 12-port: 0.23 A @ 48 V (11 W)
      • 48-port: 0.69 A @ 48 V (33.3 W)

    Hardware features

    • High-performance throughput on each port at speeds up to 100 Mbps
    • Source and destination Media Access Control (MAC) address filtering
    • RMON EtherStats packet buffering
    • 802.3 Ethernet standard compliant
    • 4-port PICs MTUs up to 9192 bytes; 8-port, 12-port, and 48-port PICs support MTUs up to 1532 bytes
    • 4-port PICs support 1,024 802.1Q VLANs per port; 8-port, 12-port, and 48-port PICs support 16 802.1Q VLANs per port

    Software features

    • Autosensing full-duplex and half-duplex modes
    • Virtual Router Redundancy Protocol (VRRP)
    • 802.1q virtual LANs (VLANs)
    • Circuit cross-connect (CCC) VLAN

    Cables and connectors

    4-port PIC:

    • Connector: Two-pair, Category 5 unshielded twisted-pair connectivity through an RJ-45 connector
    • Pinout: MDI noncrossover

    8-port PIC:

    12-port PIC:

    • Connector: One very high density connector interface (VHDCI) to RJ-21 cable that connects to an RJ-45 patch panel

    48-port PIC:

    • VHDCI-to-RJ-21 cables that connect to an RJ-45 patch panel
    • Four VHDCI connectors that each service 12 10/100 ports

    Note: Each of the four connectors on a Fast Ethernet 48-port PIC can support a maximum of approximately 800 Mbps. However, this constitutes oversubscription. Use this PIC only in environments that can support this level of oversubscription.


    Status LED, one bicolor:

    • Off—PIC ports not enabled
    • Green—PIC is operating normally
    • Red—PIC has an error or failure

    4-port PIC—One pair of port LEDs:

    • Link LED—If green, the port is online; if there is no light, the port is down
    • RX LED—If flashing green, the port is receiving data; if there is no light, the port might be on but is not receiving data

    8-port PIC—one pair of port LEDs per port:

    • Port link LED—If green, the port is online; if there is no light, the port is down

      Note: The Link LED remains lit on the 8-port PIC when the port is down.

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

    12-port PIC—one port LED per port:

    • Green—100-Mbps link established
    • Flashing green—100-Mbps activity
    • Yellow—10-Mbps link established
    • Flashing yellow—10-Mbps activity
    • Off—No link present

      Note: The port LEDs remain lit on the 12-port PIC when the ports are down.


    Note: The 48-port PIC does not have port LEDs. To check port status on a 48-port PIC, use the show interfaces fe-fpc/pic/port command. For more information about this command, see the Junos OS Network Interfaces Configuration Guide.

    Published: 2010-10-28