Midplane Architecture - Cisco ASR 5000 Series Installation Manual

ASR 5000 Hardware Platform Overview

Midplane Architecture

The midplane separates the front and rear chassis slots. The connectors on the midplane provide intra-chassis
communications, power connections, and data transport paths between the various installed cards.
The midplane also contains two independent -48 VDC busses (not shown) that distribute redundant power to each card
within the chassis.
Figure 4.
Table 4. Midplane and Bus Descriptions
Item Description
1 Slot number 1 (left-most application card slot)
2 Chassis midplane: provides intra-chassis communications and data transport paths between the various installed cards
3 SPIO cross-connect bus
4 Chassis slot number 16: right-most application card slot
5 Chassis slot number 17: upper right-most line card slot. The 10 Gigabit Ethernet Line Card (XGLC) is a full-height line
card that takes up the upper and lower slots in the back of the chassis. Use the upper slot number only when referring to
installed XGLCs. Slot numbering for other half-height lines cards is maintained: 17 to 32 and 33 to 48, regardless of the
number of installed XGLCs.
6 Chassis slot number 48: lower left-most line card slot
Midplane/Switch Fabric Architecture
Chassis Description ▀
ASR 5000 Installation Guide ▄
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