The Cisco CRS 8-slot
Line Card Chassis Enhanced router supports 40 G, 140 G, and 400 G fabric cards
and line cards. The Cisco CRS 8-Slot Line Card Chassis Enhanced router consists
of one of the following:
- A single, 8-slot, 40-Gbps-per-slot
line-card shelf for a total switching capacity of 640 Gbps
- A single, 8-slot, 140-Gbps-per-slot
line-card shelf for a total switching capacity of 2.24 Tbps
- A single, 8-slot,
400-Gbps-per-slot line-card shelf for a total switching capacity of 12.8 Tbps
The 8-slot chassis is
a half-height, rack-mounted 8-slot version of the Cisco CRS 16-Slot Line Card
Chassis Enhanced router.
The routing systems
are built around a scalable, distributed three-stage switch fabric and a
variety of line card (packet) interfaces. These packet interfaces are located
on modular services cards (MSCs), forwarding processors (FP), or label switch
processor (LSP) cards and their associated physical layer interface modules
(PLIMs) which can be referred to as line cards and are effectively
cross-connected to each other through the switch fabric. MSC, FP, and LSP cards
are also referred to as line cards.
The routing system
consists of a single, rack-mounted Cisco CRS 8-Slot Line Card Chassis Enhanced
router that contains the system components:
- Up to eight MSC,
FP, or LSP line cards.
- Up to eight
physical layer interface modules or PLIMs (one for each line card).
- Route processor
(RP) cards (up to two) or performance route processor (PRP) cards (up to two)
- Switch fabric
cards (four required)
- SPA Interface
Processors (SIPs) and Shared Port Adapters (SPAs) which can be installed
instead of 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.
- 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
- 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
System uses fabric cards designed for 400G operation (CRS-8-FC400/S 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
A mixture of 40G,
140G, and 400G fabric cards is not supported except during migration.
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