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This section provides high-level details of the hardware components that make up the multishelf system. These topics are included in this section:
This section provides high-level details of the hardware components that make up the multishelf system. These topics are included in this section:
As part of the multishelf system, the LCC houses modular services cards (MSCs) or forward processing cards (FPs), switch fabric cards (SFCs), and route processor (RP/PRP) cards. The LCC used in the multishelf system is the same as the one used in the standalone 16-slot CRS except that it uses different fabric cards and has a rear cable management kit. A minimum of one LCC is required to configure a multishelf system.
Note | Please refer to the Cisco CRS Carrier Routing System 16-Slot Line Card Chassis System Description for details about the LCC. This system description focuses on topics that are specific to the FCC and the overall multishelf system. |
The FCC is the centerpiece of the multishelf system. It is used to connect all LCCs together. The FCC houses 24 switch fabric cards (SFCs), 24 optical interface modules (OIMs), 2 OIM light emitting diode (LED) monitoring cards (OIM-LED), and 2 integrated shelf controller Gigabit Ethernet cards. At least one FCC is required to configure a multishelf system
The multishelf system allows multiple LCCs and FCCs to act as a single system. The multishelf system supports up to eight LCCs and one, two, or four FCCs. Single-FCC Multishelf System figure shows a single-FCC multishelf system, Two-FCC Multishelf System figure shows a two-FCC multishelf system, and Four-FCC Multishelf System figure shows a four-FCC multishelf system.
1 |
LCC |
2 |
FCC |
1 |
LCC |
2 |
FCC |
1 |
LCC |
2 |
FCC |
The main features of the multishelf system include:
The FCC contains the switch fabric and OIMs. The connection between the FCC and LCC is by way of cables from the OIMs in the FCC, to fabric cards in the LCC. The FCC is secured to the floor and has locking front and rear doors. The FCC is a complete rack enclosed in a cabinet, so external racks are not required for the installation of an FCC.
This is a list of the main components of the FCC. It primarily identifies the components that are considered field-replaceable units (FRUs).
The FCC contains:
Caution | The FCC supports either 40 GB switch fabric cards (CRS-FCC-SFC), 140 GB switch fabric cards (CRS-FCC-SFC-140), or 400 GB switch fabric cards (CRS-FCC-SFC-400). An FCC with a mix of 40 GB,140 GB and 400 GB SFCs is not a supported mode of operation. Such a mode is temporarily allowed only during the upgrade process. |
This figure shows the front view (SFC side) and rear view (OIM site) of a fixed configuration AC powered FCC.
1 |
Power shelves |
4 |
Lower SFC card cage |
2 |
Upper fan tray |
5 |
Chassis air filter |
3 |
Upper SFC card cage |
6 |
Lower fan tray |
This figure shows the front (SFC) view of a fixed configuration AC and DC power supply installed at the top of the FCC.
This figure shows the rear (OIM) view of a fixed configuration AC and DC power supply installed at the top of the FCC.
This figure shows the front (SFC) view of a modular configuration AC and DC power supply installed at the top of the FCC.
This figure shows the rear (OIM) view of a modular configuration AC and DC power supply installed at the top of the FCC.
This section identifies the locations and slot numbers for major cards that plug into the FCC. This figure shows the chassis slot numbers on the front (SFC) side of the FCC.
1 |
Upper SFC Card Cage |
2 |
Lower SFC Card Cage |
As shown in above figure, the components on the front (SFC) side of the FCC include:
This figure shows the component numbers on the back (OIM) side of an FCC.
1 |
Upper SFC Card Cage |
2 |
Lower SFC Card Cage |
As shown in above figure, the slot numbers on the back (OIM) side of the FCC include:
The OIM slot numbers are aligned with the SFC slot numbers on the other side of the chassis. Because an OIM mates with its associated SFC through the backplane, OIM slot 0 is on the far right side of the chassis looking at it from the OIM (rear) side; SFC slot 0 is on the far left side of the chassis looking at it from the SFC (front) side. OIM slot 0 and SFC slot 0 mate with one another through the backplane, as do all other OIM and SFC slots.
This figure is a top view of the FCC footprint (with front and rear cosmetics installed).
1 |
Chassis width 23.6 in. (60 cm) |
2 |
Chassis depth 41.3 in. (105 cm) |
The FCC has cable management features for both the front (SFC) side of the chassis and the rear (OIM) side of the chassis. Both the front (SFC) and rear (OIM) sides have vertical cable troughs on the left and right sides of the chassis. In addition, the rear (OIM) side of the chassis has three horizontal cable management brackets close to the card cages.
The FCC also includes front and rear locking doors, bezels, and side panels. The cosmetic components are shipped in a separate package and must be installed on the FCC during system installation.