Software release

• 20-port: JUNOS 9.1 and later
• 40-port: JUNOS 8.5 and later

Description

• 20 or 40 Gigabit Ethernet ports
• Power requirement:
  • 20-port: 4.2 A @ 48 V (200 W)
  • 40-port: 7.6 A @ 48 V (365 W)
• Weight:
  • 20-port: 13 lb (5.9 kg)
  • 40-port: 13.1 lb (5.9 kg)
• Supports large Ethernet frame sizes for more efficient throughput across the intra-POP network
• Model numbers:
  • 20-port: DPCE-R-Q-20GE-SFP
  • 40-port: DPCE-R-Q-40GE-SFP

Hardware features

• High-performance throughput on each port at speeds up to 1 Gbps
• Autonegotiation between Gigabit Ethernet circuit partners
• Full-duplex mode
• Maximum transmission units (MTUs) of up to 9192 bytes
• Enhanced ASICs for increased performance and scalability of Layer 2 features

Software features

• Optical diagnostics and related alarms
• See Protocols and Applications Supported by MX Series Enhanced Queuing IP Services DPCs (DPCE-R-Q) for information about the protocols and applications that this DPC supports.

Cables and connectors

• You can install any transceiver supported by the DPC. For information about installing and removing transceivers, see the hardware guide for your router.
• Duplex LC/PC connector (Rx and Tx)
• Small form-factor pluggable (SFP) transceivers:
  • 1000BASE-EX (model number: SFP-GE40KM)
  • 1000BASE-LH (model number: SFP-1GE-LH)
  • 1000BASE-LX (model number: SFP-1GE-LX)
  • 1000BASE-SX (model number: SFP-1GE-SX)
  • 1000BASE-T (model number: SFP-1-GE-T)

  Interface specifications—see 10Base, 100Base, and 1000Base Transceiver Optical Interface Specifications

• Bidirectional small form-factor pluggable (SFP) transceivers:
  • 1000BASE-BX (model number pairs: SFP-GE10KT13R14 with SFP-GE10KT14R13, SFP-GE10KT13R15 with SFP-GE10KT15R13, SFP-GE40KT13R15 with SFP-GE40KT15R13)

  Optical interface specifications—see Bidirectional SFP Optical Interface Specifications

Note: Do not install Gigabit Ethernet SFPs in the SONET/SDH port. The port will not recognize the SFP.

LEDs

OK/FAIL LED, one bicolor:

• Steady green—DPC is functioning normally.
• Blinking green—DPC is transitioning online or offline.
• Red—DPC has failed.

Link LED, one green per port:

• Off—No link.
• On steadily—Link is active.

The Link LEDs are labeled in groups of five:

• 20-port:
  • 0/0 for 0/0 through 0/4
  • 0/5 for 0/5 through 0/9
  • 1/0 for 1/0 through 1/4
  • 1/5 for 1/5 through 1/9
• 40-port:
  • 0/0 for 0/0 through 0/4
  • 0/5 for 0/5 through 0/9
  • 1/0 for 1/0 through 1/4
  • 1/5 for 1/5 through 1/9
  • 2/0 for 2/0 through 2/4
  • 2/5 for 2/5 through 2/9
  • 3/0 for 3/0 through 3/4
  • 3/5 for 3/5 through 3/9