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1-1 Cisco XR 12416 Router Installation Guide OL-13833-01 CH A P T E R 1 Product Overview This chapter pro vides an o vervi ew of the Cisco XR 12416 router. It co ntains physical descripti ons of the router ha rd ware and major component s, as well as functional descriptions o f th e hardware-related features.
Chapter 1 Product Overview Physical and Func tional Description of Ro uter 1-2 Cisco XR 12416 Router Installation Guide OL-13833-01 • Upper Line card and Rout e Processor card cage—Has 8 user -configurable slots that support a combination of line cards, a route processo r (RP), and an alarm card.
1-3 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Physical and Functional De scription of Route r Figure 1 -1 Cisco XR 120 16 Ro uter Components—Fr ont View Switch .
Chapter 1 Product Overview Physical and Func tional Description of Ro uter 1-4 Cisco XR 12416 Router Installation Guide OL-13833-01 AC and DC Power Subsystems A router ships with either an A C or DC powered system.
1-5 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Physical and Functional De scription of Route r Figure 1 -2 Standard A C-Input Po wer Subsystem Caution A router equ.
Chapter 1 Product Overview Physical and Func tional Description of Ro uter 1-6 Cisco XR 12416 Router Installation Guide OL-13833-01 Optional AC Power Shelf The po wer subsystem consists of a double-le vel A C-input powe r shelf with bays for 4 A C-input po wer supplies.
1-7 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Physical and Functional De scription of Route r Figur e 1 -4 Optional A C-Input P ow er Subsyst em Caution A router .
Chapter 1 Product Overview Physical and Func tional Description of Ro uter 1-8 Cisco XR 12416 Router Installation Guide OL-13833-01 A C power to the ro uter is pro vided through po wer cords connected from A C power outlets to the connec tors on the back of the po wer shelf as sho wn in Figure 1-5 .
1-9 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Physical and Functional De scription of Route r AC Power Supplies Each A C PEM con verts 200 t o 240 V A C into -48 VDC, which is distribu ted through the chassis backpl ane to all cards, RPs, and the blower modules.
Chapter 1 Product Overview Physical and Func tional Description of Ro uter 1-10 Cisco XR 12416 Router Installation Guide OL-13833-01 The status LEDs on an A C PEM provide in for mation about the current operational status of the po wer supply: • PWR OK (green)—Indicates that the power supply module is o perating normally .
1-11 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Physical and Functional De scription of Route r In the DC-input po wer configurat ion: • Modules A1 and B1 pro vide redundant po wer for system load zone 1 (the upper blower module and the upper card cage).
Chapter 1 Product Overview Physical and Func tional Description of Ro uter 1-12 Cisco XR 12416 Router Installation Guide OL-13833-01 Figure 1 -8 DC-Input P ow er Shelf Connection s A1- A1+ A2- A2+ B2+.
1-13 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Physical and Functional De scription of Route r DC Power Supplies Each DC PEM operates from a nominal so urc e DC voltage of –48 to –6 0 VDC and requires a de dicated 60 amp se rvice.
Chapter 1 Product Overview Chassis Card Cages 1-14 Cisco XR 12416 Router Installation Guide OL-13833-01 The status LEDs on a DC PEM provide information about the current operational status of the po wer supply: • PWR OK (green)—Indicates that the power supply module is o perating normally .
1-15 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Chassis Card Cages Lower Card Cage The lower card cage also has eight user -con figurabl e slots that suppor t additional line cards, an alarm card, and an optional, redundant RP .
Chapter 1 Product Overview Switch Fabric Overview 1-16 Cisco XR 12416 Router Installation Guide OL-13833-01 Switch Fabric Overview The switch fabric provides synchronized gigabit-speed connections between line cards and the RP .
1-17 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Switch Fabric Overview Caution Do not remov e the blank f iller panel unless instructed to do so by a Cisco support represen tative.
Chapter 1 Product Overview Alarm Card and Lin e Card Overview 1-18 Cisco XR 12416 Router Installation Guide OL-13833-01 Alarm Card and Line Card Overview This section p rovides general inf ormatio n about alarm card s, line card s and types of route processors in stalled in the router .
1-19 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Alarm Card and Line Card Over view – EN ABLED (green)—The alarm card is operational and functioning properly . – F A IL (yello w)—The alarm card in that slot is faulty .
Chapter 1 Product Overview Route Processor 1-20 Cisco XR 12416 Router Installation Guide OL-13833-01 Line Cards Up to 15 Cisco XR 12416 router line cards can be installed in the routers up per and lo wer card cages to support a v ariety of physical netw ork media.
1-21 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Route Process or • Uploads the operating system sof tware images to all in stalled line cards during power-up •.
Chapter 1 Product Overview Route Processor 1-22 Cisco XR 12416 Router Installation Guide OL-13833-01 Performance Route Processor Overview The performance route pro cessor (PRP) uses a Motorola PowerPC 7450 CPU that runs at an external b us clock speed of 133 MHz and has an internal cl ock speed of 667 MHz.
1-23 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Route Process or PRP Ethernet Ports and Status LEDs The PRP has two 8-pin media-depend ent interface (MDI) RJ-4 5 ports for either IEEE 802.3 10B ASE-T (10 Mbps) or I EEE 802.
Chapter 1 Product Overview Route Processor 1-24 Cisco XR 12416 Router Installation Guide OL-13833-01 PRP Auxiliary and Console Ports The auxiliary and consol e ports on the PRP are EIA/TIA-232 (also kno wn as RS-232) asynchronous serial ports. Thes e ports connect external de vices to monitor and manage the system.
1-25 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Route Process or PRP Alphanumeric Message Displays The alphanumeric message displays are or ganized in two ro ws of four LED characters each ( Figure 1-13 ).
Chapter 1 Product Overview Route Processor 1-26 Cisco XR 12416 Router Installation Guide OL-13833-01 PRP Memory Components This section describes v arious types of memory used on the PRP to support router functions. Ta b l e 1 - 1 provides a quick reference of the dif ferent types of memory , and Figure 1-14 sho w s the location on the PRP b oard.
1-27 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Route Process or Figure 1 -14 PRP Memory Locatio ns E JEC T RX TX P R IM A R Y SLOT -1 SLOT -0 LINK EN RX TX ETH 1 .
Chapter 1 Product Overview Route Processor 1-28 Cisco XR 12416 Router Installation Guide OL-13833-01 PRP SDRAM The PRP uses Error Checking and Correction (ECC) Synchronized Dynamic Random Access Memory (SDRAM) to store routi ng tables, protocols, network accounting applicat ions, and to run Cisco IOS softw are.
1-29 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Route Process or PRP NVRAM Non-v olatile Random Access Memo ry (NVRAM) pro vides 2 MB of memory for system conf iguration f iles, software register settings, and en vironmental monitoring logs.
Chapter 1 Product Overview Blower Module 1-30 Cisco XR 12416 Router Installation Guide OL-13833-01 Upper and Lower Cable Management Brackets The Cisco XR 12416 router inclu des upper and lo wer cable .
1-31 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Blower Module Each blo w er module contains three v ariab le speed fans and a controller card.
Chapter 1 Product Overview Blower Module 1-32 Cisco XR 12416 Router Installation Guide OL-13833-01 Figure 1 -16 Cooling Air Flow T o ensure that there is adequate air flo w to prev ent ov erheating inside the card cages keep the front and back of the rout er unobstru cted.
1-33 Cisco XR 12416 Router Installation Guide OL-13833-01 Chapter 1 Product Overview Blower Module Caution Y ou should inspect and clean the air f ilter one time per month (more often i n dusty en vironments). Do not operate the rout er without an air filter installed.
Chapter 1 Product Overview Blower Module 1-34 Cisco XR 12416 Router Installation Guide OL-13833-01.
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