Rear Slot Numbering For Half-Height Line Cards; Rear Slot Numbering With Full-Height Line Cards; Mounting Options - Cisco ASR 5000 Series Installation Manual

▀ Chassis Description

Rear Slot Numbering for Half-Height Line Cards

Rear-installed line cards must be installed directly behind their respective front-loaded application card. For example, an
application card in Slot 1 must have a corresponding line card in Slot 17. The redundant line card for this configuration
would be placed in Slot 33. This establishes a directly mapped communication path through the chassis midplane
between the application and line cards.
To help identify which rear slot corresponds with the front-loaded application card, the upper rear slot numbers are
equal to the slot number of the front-loaded card plus 16. For example, to insert a line card to support an application
card installed in slot 1, add 16 to the slot number of the front-loaded application card (Slot 1 + 16 slots = Slot 17). Slot
17 is the upper right-most slot on the rear of the chassis, directly behind Slot 1.
For lower rear slot numbers, add 32. Again, a redundant line card for an application card in Slot 1 would be (Slot 1 + 32
= Slot 33). Slot 33 is the lower right-most slot on the rear of the chassis, also behind Slot 1.

Rear Slot Numbering with Full-height Line Cards

ASR 5000 systems may be configured with 10 Gigabit Ethernet Line Cards (XGLCs). These are full-height line cards
that require the removal of the half-height card guides to accommodate the cards. In this case, only the upper slot
number is used to refer to the XGLC. For half-height cards installed with the XGLCs, the half-height slot numbering
scheme is maintained.
For example, XGLCs installed in slots 17 and 32 also take up slots 33 and 48, but are referred to as cards in slots 17
and 32 only. The slots in which the SPIOs and RCCs are installed in the same configuration, are slots 24 and 25, and 40
and 41, respectively.

Mounting Options

The chassis is designed for installation in a standard (EIA-310-D, IEC 60297) 19-inch wide (482.6 mm) equipment rack
or telco cabinet. Additional rack hardware (such as extension brackets) may be used to install the chassis in a 23-inch
(584.2 mm) rack. Each chassis is 24.50 inches (62.23 cm) high. This equates to 14 Rack Units (1 RU = 1.75 in. [44.5
mm]).
You can mount a maximum of three ASR 5000 chassis in a 2- or 4-post equipment rack, or telco cabinet, provided that
all system cooling and ventilation requirements are met. Three stacked chassis will occupy a minimum of 42 RUs.
There are two options for mounting the chassis in an equipment rack or telco cabinet:
 Flush mount: In this configuration, the flanges of the mounting brackets are flush with the front of the chassis.
This method is typically used with 4-post racks and telco equipment cabinets. This is the default configuration
as shipped.
 Mid-mount: In this configuration, the flanges of the mounting brackets are recessed from the front of the
chassis. This method is typically used with 2-post racks. You must remove and re-install the mounting brackets
in the middle of the chassis on both sides.
Caution:
The ambient environment (conditioned space) must allow the system to function within its specified operating limits.
▄ ASR 5000 Installation Guide
22
The equipment rack or cabinet hardware must not hinder air flow at any of the intake or exhaust vents.
ASR 5000 Hardware Platform Overview