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MX480 Interface Modules—DPCs

 

MX480 Dense Port Concentrator (DPC) Description

A Dense Port Concentrator (DPC) is optimized for Ethernet density (see Figure 1). The DPC assembly combines packet forwarding and Ethernet interfaces on a single board, with either two or four 10-Gbps Packet Forwarding Engines. Each Packet Forwarding Engine consists of one I-chip for Layer 3 processing and one Layer 2 network processor. The DPCs interface with the power supplies and Switch Control Boards (SCBs).

The DPC slots are located in the front of the router (see Figure 1). The router has six dedicated DPC slots that are numbered 0 through 5. A DPC can be installed in any DPC slot on the router. You can install any combination of DPC types in the router. If a slot is not occupied by a DPC, a DPC blank panel must be installed to shield the empty slot and to allow cooling air to circulate properly through the router.

DPCs are hot-removable and hot-insertable, as described in MX480 Field-Replaceable Units (FRUs). When you install a DPC in an operating router, the Routing Engine downloads the DPC software, the DPC runs its diagnostics, and the Packet Forwarding Engines housed on the DPC are enabled. Forwarding on other DPCs continues uninterrupted during this process.

Figure 1 shows typical DPCs supported on the MX480 router. For more information about DPCs, see the MX Series Interface Module Reference.

Figure 1: Typical DPCs Supported on the Router
Typical DPCs Supported on
the Router
Figure 2: DPC Installed Horizontally in the Router
DPC Installed
Horizontally in the Router

DPC Components

Each DPC consists of the following components:

  • DPC cover, which functions as a ground plane and a stiffener.

  • Fabric interfaces.

  • Two Gigabit Ethernet interfaces that allow control information, route information, and statistics to be sent between the Routing Engine and the CPU on the DPCs.

  • Two interfaces from the SCBs that enable the DPCs to be powered on and controlled.

  • Physical DPC connectors.

  • Two or four Packet Forwarding Engines.

  • Midplane connectors and power circuitry.

  • Processor subsystem, which includes a 1.2-GHz CPU, system controller, and 1 GB of SDRAM.

  • Online button—Takes the DPC online or offline when pressed.

  • LEDs on the DPC faceplate. For more information about LEDs on the DPC faceplate, see the MX Series Interface Module Reference.

Two LEDs, located on the craft interface above the DPC, display the status of the DPC and are labeled OK and FAIL.

MX480 DPC Port and Interface Numbering

Each port on a DPC corresponds to a unique interface name in the CLI.

In the syntax of an interface name, a hyphen (-) separates the media type from the DPC number (represented as an FPC in the CLI). The DPC slot number corresponds to the first number in the interface. The second number in the interface corresponds to the logical PIC number. The last number in the interface matches the port number on the DPC. Slashes (/) separate the DPC number from the logical PIC number and port number.

type-fpc/pic/port

  • type—Media type, which identifies the network device. For example:

    • ge—Gigabit Ethernet interface

    • so—SONET/SDH interface

    • xe—10-Gigabit Ethernet interface

    For a complete list of media types, see Interface Naming Overview.

  • fpc—Slot in which the DPC is installed. On the MX480 router, the DPCs are represented in the CLI as FPC 0 through FPC 5.

  • pic—Logical PIC on the DPC. The number of logical PICs varies depending on the type of DPC. For example, a:

    • 20-port Gigabit Ethernet DPC has two logical PICs, numbered 0 through 1.

    • 40-port Gigabit Ethernet DPC has four logical PICs, numbered 0 through 3.

    • 2-port 10-Gigabit Ethernet DPC has two logical PICs, numbered 0 through 1.

    • 4-port 10-Gigabit Ethernet DPC has four logical PICs, numbered 0 through 3.

    For more information on specific DPCs, see DPCs Supported on MX240, MX480, and MX960 Routers in the MX Series Interface Module Reference.

  • port—Port number.

The MX480 router supports up to six DPCs that install horizontally and are numbered 0 through 5 from bottom to top.

Figure 3 shows a 40-port Gigabit Ethernet DPC with SFP installed in slot 3 on the MX480 router.

Figure 3: MX480 DPC Interface Port Mapping
MX480 DPC Interface
Port Mapping

The DPC contains four logical PICs, numbered PIC 0 through PIC 3 in the CLI. Each logical PIC contains 10 ports numbered 0 through 9.

The show chassis hardware command output displays a 40-port Gigabit Ethernet DPC with SFP (DPCE-R-40GE-SFP) installed in DPC slot 3. The DPC (DPCE 40x 1GE R) is shown as FPC 3 in the CLI. The DPC’s four logical PICs — 10x 1GE(LAN) — are shown as PIC 0 through PIC 3.

user@host> show chassis hardware

The show interfaces terse command output displays the Gigabit Ethernet interfaces that correspond to the 40 ports located on the DPC.

user@host>show interfaces terse ge-3*

MX480 Dense Port Concentrator (DPC) LEDs

Two LEDs, located on the craft interface above the DPC, display the status of the DPC and are labeled OK and FAIL. For more information about the DPC LEDs on the craft interface, see DPC and MPC LEDs on the MX480 Craft Interface.

Each DPC also has LEDs located on the faceplate. For more information about LEDs on the DPC faceplate, see the “LEDs” section for each DPC in the MX Series Interface Module Reference.

DPCs Supported on MX240, MX480, and MX960 Routers

Note

These DPCs have all been announced as End of Life (EOL). The End of Support (EOS) milestone dates for each model are published at https://www.juniper.net/support/eol/mseries_hw.html.

Table 1 lists the DPCs supported by the MX240, MX480, and MX960 routers.

Table 1: DPCs Supported in MX240, MX480, and MX960 Routers

DPC Name

DPC Model Number

Ports

Maximum Throughput per DPC

First Junos OS Release

Gigabit Ethernet

Gigabit Ethernet DPC with SFP

DPC-R-40GE-SFP

EOL (see PSN-2009-06-400  )

40

40 Gbps

8.2

Gigabit Ethernet Enhanced DPC with SFP

DPCE-R-40GE-SFP

EOL (see PSN-TSB16810  )

40

40 Gbps

8.4

Gigabit Ethernet Enhanced Ethernet Services DPC with SFP

DPCE-X-40GE-SFP

EOL (see PSN-TSB16810  )

40

40 Gbps

8.4

Gigabit Ethernet Enhanced Queuing Ethernet Services DPC with SFP

DPCE-X-Q-40GE-SFP

EOL (see PSN-2013-02-851  )

40

40 Gbps

8.5

Gigabit Ethernet Enhanced Queuing IP Services DPCs with SFP

DPCE-R-Q-20GE-SFP

EOL (see PSN-2013-02-851  )

20

20 Gbps

9.1

Gigabit Ethernet Enhanced Queuing IP Services DPCs with SFP

DPCE-R-Q-40GE-SFP

EOL (see PSN-2011-07-314  )

40

40 Gbps

8.5

10-Gigabit Ethernet DPC with XFP

DPC-R-4XGE-XFP

EOL (see PSN-2009-06-400  )

4

40 Gbps

8.2

10-Gigabit Ethernet

10-Gigabit Ethernet Enhanced DPCs with XFP

DPCE-R-2XGE-XFP

EOL (see PSN-2011-02-314  )

2

20 Gbps

9.1

10-Gigabit Ethernet Enhanced DPCs with XFP

DPCE-R-4XGE-XFP

EOL (see PSN-TSB16810  )

4

40 Gbps

8.4

10-Gigabit Ethernet Enhanced Ethernet Services DPC with XFP

DPCE-X-4XGE-XFP

EOL (see PSN-TSB16810  )

4

40 Gbps

8.4

10-Gigabit Ethernet Enhanced Queuing Ethernet Services DPC with XFP

DPCE-X-Q-4XGE-XFP

EOL (see PSN-2013-02-851  )

4

40 Gbps

8.5

10-Gigabit Ethernet Enhanced Queuing IP Services DPC with XFP

DPCE-R-Q-4XGE-XFP

EOL (see PSN-2011-02-314  )

4

40 Gbps

8.5

Mulit-Rate Ethernet

Multi-Rate Ethernet Enhanced DPC with SFP and XFP

DPCE-R-20GE-2XGE

EOL (see PSN-TSB16810  )

22

40 Gbps

9.2

Multi-Rate Ethernet Enhanced Ethernet Services DPC with SFP and XFP

DPCE-X-20GE-2XGE

EOL (see PSN-2011-02-314  )

22

40 Gbps

9.2

Multi-Rate Ethernet Enhanced Queuing IP Services DPC with SFP and XFP

DPCE-R-Q-20GE-2XGE

EOL (see PSN-TSB16810  )

22

40 Gbps

9.3

Tri-Rate Ethernet

Tri-Rate Enhanced DPC

DPCE-R-40GE-TX

EOL (see PSN-2013-02-851  )

40

40 Gbps

9.1

Tri-Rate Enhanced Ethernet Services DPC

DPCE-X-40GE-TX

EOL (see PSN-2011-07-315.  )

40

40 Gbps

9.1

Services

Multiservices DPC

MS-DPC

EOL (see PSN-TSB16812  )

2 (Not supported)

9.3