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Fast Ethernet PICs

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Figure 0: Left: 4-Port Fast Ethernet; Right: 8-Port Fast Ethernet

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Figure 0: Left: 48-Port Fast Ethernet; Right: VHDCI to RJ-21 Cable

Software release
  • 4-port: JUNOS 4.1 and later
  • 8-port: JUNOS 5.2 and later
  • 48-port: JUNOS 4.4 and later
Description
  • 4 or 48 100Base-T ports; 8 100Base-FX ports
  • Power requirements:
    • 4-port: 0.14 A/48 V @ 6.8 W
    • 8-port: 0.26 A/48 V @ 12.5 W
    • 48-port: 0.69 A/48 V @ 33.3 W
Hardware features
  • High-performance throughput on all ports 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 support MTUs up to 4,500 bytes; 8-port and 48-port PICs support MTUs up to 1,532 bytes
  • 4-port PICs support 1,024 802.1Q VLANs per port; 8-port and 48-port PICs support 16 802.1Q VLANs per port
Software features
  • Auto sensing 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 PICs:
  • Connector: Two-pair, category 5 unshielded twisted pair connectivity through an RJ-45 connector
  • Pinout: MDI noncrossover

8-port PICs:
  • FX optical interface
    • Connector: MT-RJ female
    • Length: 1.24-mile / 2-km reach on 62.5/125 micrometer MMF
    • Wavelength: 1,270 to 1,380 nm
    • Average Launch Power: –20 to –14 dBm
    • Receiver Saturation: –14 dBm
    • Receiver Sensitivity: –34 dBm

48-port PIC:
  • VHDCI to RJ-21 cable that connects 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.

LEDs Status LEDs, one bicolor:
  • Off—PIC ports not enabled
  • Green—PIC is operating normally
  • Red—PIC has an error or failure

4-port and 8-port PICs have port LEDs, one pair per port:
  • Link—If green, the port is online; no light means the port is down

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

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

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. For more information about this command, see the JUNOS Operational Mode Command Reference: Interfaces
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