CHAPTER 6
Line Card Components and Descriptions
•
Interface Modules—DPCs on page 55
•
Interface Modules—FPCs and MICs on page 63
•
Interface Modules—MPCs and MICs on page 69
Interface Modules—DPCs
•
MX480 Dense Port Concentrator (DPC) Description on page 55
•
MX480 DPC Port and Interface Numbering on page 57
•
MX480 Dense Port Concentrator (DPC) LEDs on page 60
•
DPCs Supported on MX240, MX480, and MX960 Routers on page 60
MX480 Dense Port Concentrator (DPC) Description
A Dense Port Concentrator (DPC) is optimized for Ethernet density (see
Figure 21 on page 56). 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 21 on page 56). 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)” on page 247. 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 21 on page 56 shows typical DPCs supported on the MX480 router. For more
information about DPCs, see the MX Series Interface Module Reference.
55Copyright © 2017, Juniper Networks, Inc.
To Next Page
Loading...
