Chapter 1 Cisco XR 12406 Router Overview
Line Cards
Line Cards
The Cisco XR 12406 Router is shipped pre-installed with the number and type of line cards that you ordered. Line cards and route processors can be installed 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 processor 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 cage 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.
| Cisco XR 12406 Router Installation Guide |
1-8 | OL-13831-01 |
