Cisco 8-Slot Chassis Components; Power Components - Cisco CRS-1 System Description

Cisco 8-Slot Chassis Components

• SPA Interface Processors (SIPs) and Shared Port Adapters (SPAs) which can be installed instead of
• A chassis midplane that connects MSCs, FPs, and LSPs to their PLIMs and to switch fabric cards
The Cisco CRS 8-slot Line Card Chassis Enhanced router supports 40G, 140G, and 400G fabric cards, as
follows:
• The Cisco CRS-1 Carrier Routing System uses fabric cards designed for 40 G operation (CRS-8-FC/S
• The Cisco CRS-3 Carrier Routing System uses fabric cards designed for 140G operation (CRS-8-FC140/S
• The Cisco CRS-X Carrier Routing System uses fabric cards designed for 400G operation (CRS-8-FC400/S
A mixture of 40G, 140G, and 400G fabric cards is not supported except during migration.
Note Throughout this document, the generic term Cisco CRS Carrier Routing system refers to the Cisco CRS-1,
Cisco CRS-3, and Cisco CRS-X Carrier Routing Systems, unless otherwise specified.
Cisco 8-Slot Chassis Components
This section lists the main components of a Cisco CRS 8-slot line card chassis. It primarily identifies the
components that are considered field-replaceable units (FRUs), but where additional detail is useful identifies
subassemblies that are not field replaceable. This section contains these topics:

Power Components

The Cisco CRS 8-slot Line Card Chassis Enhanced router contains a power system that provides redundant
power to the chassis.
The Cisco CRS 8-slot Line Card Chassis Enhanced router uses either AC or DC power.
The Cisco CRS 8-slot Line Card Chassis Enhanced router contains two power shelves with either up to three
AC PMs per power shelf or up to four DC power modules (PMs).
Figure 1: Front (PLIM) View of Two Cisco CRS 8-slot Line Card Chassis Enhanced Routers —Modular
Configuration AC and DC Power
routers - one with an AC modular configuration power supply installed and one with a DC modular
configuration power supply installed.
Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router System Description
2
PLIMs.
• SIP is a carrier card that is similar to a PLIM and inserts into a Cisco CRS Line Card Chassis
Enhanced router slot and interconnects to a line card like a PLIM does. Unlike PLIMs, SIPs provide
no network connectivity on their own.
• SPA is a modular type of port adapter that inserts into a subslot of a compatible SIP carrier card to
provide network connectivity and increased interface port density. A SIP can hold one or more
SPAs, depending on the SIP type and the SPA size. POS/SDH and Gigabit Ethernet SPAs are
available.
or CRS-8-FC/M cards).
or CRS-8-FC140/M cards).
fabric card or CRS-8-FC400/M fabric card). For detailed information about the CRS back-to-back system,
see Introduction to the CRS-3 Back-to-Back System.
Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router Overview
shows the front view of two Cisco CRS 8-slot Line Card Chassis Enhanced