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MX2010 Backplane Description

The MX2010 router consist of a signal backplane and a power backplane that connects PSMs and PDMs to the chassis. The adapter cards (ADCs) are carrier cards used to house the MPCs. The MPCs install into the bottom card-cage backplanes from the front of the chassis and mate to the signal backplane to connect to the Switch Fabric Boards (SFBs) and the Control Board and Routing Engines (CB-REs). The backplane connects 10 line cards to 8 SFBs and 2 CB-REs. The SFBs and CB-REs install into the top from the front of the chassis. The PSMs install into the bottom power backplane, and the PDMs mate to the bottom power backplane. The cooling system components also connect to the top and bottom backplane.

The backplane performs the following major functions:

  • Data path—Data packets are transferred across the backplane between the MPCs through the fabric ASICs on the SFBs.

  • Power distribution—The router PDMs relay power from the feeds to the input of the PSMs through the power midplane. In addition, the output power from PSMs is distributed to the components of the chassis (MPCs, SFBs, and CB-REs), using the power backplane.

  • Control/management path—The backplane provides management and control path connectivity among the various system components.