Line Card Serviceability; Line Card Ejector/Insertion Levers; Power System Overview; Ac And Dc Power Modules - Cisco ASR 9000 series Reference Manual

Chapter 1 Overview and Physical Description

Line Card Serviceability

Line cards can be inserted or removed when adjacent (cabled) RSP or line cards are installed.

Line Card Ejector/Insertion Levers

Ejector/insertion levers are provided for inserting and removing line cards from the backplane
connectors. Insertion and removal force of the card ejectors is about 16 lb (7.27 kg).

Power System Overview

The Cisco ASR 9000 Series Routers can be powered with an AC or DC source power. The power system
provides power for the cards and fan trays.
The power system is based on a distributed power architecture centered around a –54 VDC printed
circuit power bus on the system backplane.
The –54 VDC system backplane power bus can be sourced from one of two options:
•
•
DC output power from each power shelf is connected to the router by two power blades that mate to the
power bus on the backplane. The system backplane distributes DC power through connectors on the
single –54 VDC distribution plane to each card and the fan trays. Each card has on-board DC-DC
converters to convert the –54 VDC from the distribution bus voltage to the voltages required by each
particular card.

AC and DC Power Modules

Each AC or DC shelf houses up to 3 power modules. The AC power shelves provide 1+1 redundancy;
DC power shelves provide N+1 redundancy. Required power inputs types for each module type are:
•
•
The power shelves drive a single output bus that delivers –54 V to all cards and fan trays that are plugged
into the backplane.
Figure 1-13
Cisco ASR 9010 Router. Since it has only one power shelf, the Cisco ASR 9006 Router can have a
maximum of three power modules installed.
OL-17501-01
D R A F T — C I S C O C O N F I D E N T I A L
AC systems: An AC/DC bulk power supply shelf connected to the customer's 180 to 264 VAC
source
DC systems: An DC/DC bulk power supply shelf connected to the customer's Central Office DC
battery source (–54 VDC nominal).
AC shelf: single phase AC multiple input
DC shelf: dual source DC input
shows a front view of six power modules installed in the two power shelves of the
Cisco ASR 9000 Aggregation Services Router Overview and Reference Guide
Power System Overview
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