Chapter1 Cisco XR 12406 Router Overview
Line Cards
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CiscoXR 12406 Router Installation Guide
OL-13831-01
Line Cards
The Cisco XR 12406 Router is shipped pre-instal led with the number and type of
line cards that you ordered. Line cards and route processors can be instal led in two
basic combinations to support route processor redundancy and a variety of
physical network media:
•Nonredundant route processor—One route processor and up to five Cisco
XR 12000 series router line cards.
•Redundant route processors—Two route processors and up to four Cisco
XR 12000 series router line cards.
Line cards can be installed in any slot—zero (0) through five (5)—in the card
cage. Slot number 5 is the recommended default route pr ocessor slot.
Single-mode and multimode line cards are shown in Figure 1-3.
Note Refer to the current s software release notes for the most up-to-date list of
supported line cards (see “Obtaining Documentation, Obtaining Support, and
Security Guidelines” on page xiv).
Line cards provide the interfaces to the router’s external physical media. External
connections are made from the front of the chassis to the connectors on the line
card face plates. The line cards communicate with the route processor and
exchange packet data with each other through the switch fabric cards in the switch
fabric and alarm card cage.
Caution Unoccupied card slots in the line card and route processor card ca ge must have a
blank filler panel installed (12000-WIDE-BLANK=) for electromagnetic
compatibility (EMC) and to ensure proper air flow through the chassis. When the
faceplate of a line card does not completely fill the card slot opening, a narrow
card filler panel must be installed (ACS-GSR16-LCFILL=).
A cable-management bracket attaches to the faceplate of each line card to manage
and organize the network interface cables connected to the individual ports on the
line card.
Line cards installed in the router support online insertion and removal (OIR),
which means you can remove and replace a line card while the router remains
powered on.