Software release

• 4-port: Junos OS Release 5.5 and later (Type 1)
• 12-port: Junos OS Release 6.0 and later (Type 1)
• 48-port: Junos OS Release 8.3 and later (Type 2)

Description

• 4, 12, or 48 100Base-TX ports
• Power requirements:
  • 4-port: 0.14 A @ 48 V (6.8 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 support MTUs up to 9192 bytes; 12-port PICs support MTUs up to 1532 bytes; 48-port PICs support MTUs up to 1532 bytes
• 4-port PICs support 1,024 802.1q VLANs per port; 12-port PICs support 16 802.1q VLANs per port; 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

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 48-port Fast Ethernet 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.

Optical interface specifications—see Ethernet 10BASE, 100BASE, and 1000BASE Copper and Optical Specifications

LEDs

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

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 Network Interfaces Configuration Guide.