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Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide
OL-6256-17
Chapter 1 Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Overview
Chassis Components
–
SIP is a carrier card that is similar to a PLIM and inserts into a line card chassis slot and
interconnects to an MSC, FP, or LSP like a PLIM. 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.
• A chassis midplane that connects MSCs, FPs, or LSPs to their PLIMs and to switch fabric cards.
The LCC supports 40G, 140G, and 200G fabric cards, as follows:
• The Cisco CRS-1 Carrier Routing System uses fabric cards designed for 40 G operation
(CRS-8-FC/S or CRS-8-FC/M cards).
• The Cisco CRS-3 Carrier Routing System uses fabric cards designed for 140G operation
(CRS-8-FC140/S or CRS-8-FC140/M cards).
• The Cisco CRS-X Carrier Routing Sytsem uses fabric cards designed for 200G operation
(CRS-8-FC400/S cards in 200G mode).
A mixture of 40G, 140G, and 200G 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.
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.
Figure 1-1 shows the front view of a Cisco CRS 8-slot line card chassis with a fixed configuration AC
power system installed. The front view of a Cisco CRS 8-slot line card chassis with a fixed configuration
DC power system installed is similar.