Cisco Systems XR 12416 Installation Manual
Contents
1. A 129307 al i l j SI k a J S gt PERFORMANCE ROUTE PROCESS t 1 PRP 1 1 PCMCIA flash disk slots shown with coverin 4 Console serial port place and slot LEDs RJ 45 Ethernet ports and data status LEDs 5 Reset button Auxiliary serial p ort 6 Alphanumeric message displays PRP PCMCIA Card Slots and Status LEDs Note Two PCMCIA card slots slot 0 and slot 1 provide the PRP with additional flash memory capacity All combinations of different flash devices are supported by the PRP You can use ATA flash disks Type 1 or Type 2 linear flash memory cards or a combination of the two The PRP only supports 5 2 VDC flash memory devices It does not support 3 3 VDC PCMCIA devices Status LEDs Slot 0 Slot 1 indicate when the flash memory card in that slot is accessed see Figure 1 11 Each slot has an eject button located behind the cover to remove a flash card from the slot Cisco XR 12416 Router Installation Guide ur OL 13833 01 Chapter 1 Product Overview Route Processor W PRP Ethernet Ports and Status LEDs The PRP has two 8 pin media dependent interface MDI RJ 45 ports for either IEEE 802 3 10BASE T 10 Mbps or IEEE 802 3u 100BASE TX 100 Mbps Ethernet connections These ports are labeled ETH 0 and ETH 1 The transmission speed of the Ethernet port is not user configurable You set the speed through an autosensing2. Switch Fabric Card Functionality The core of the router is a crossbar switch fabric that provides synchronized connections between the line cards and the RP The switch fabric consists of 2 clock scheduler cards CSCs and 3 switch fabric cards SFCs installed in the switch fabric card cage One CSC and the three SFCs are the active switch fabric the second CSC provides redundancy for the other 4 cards The router also ships with a blank switch fabric card installed in the far left non working slot of the switch fabric card cage The blank filler panel balances the air flow through the switch fabric card cage which helps maintain proper air flow through the chassis Cisco XR 12416 Router Installation Guide ie E OL 13833 01 Chapter1 Product Overview Switch Fabric Overview Wi A Caution Do not remove the blank filler panel unless instructed to do so by a Cisco support representative Clock Scheduler Cards Clock scheduler cards provide the following functionality e Scheduler Handles all scheduling requests from the line cards for access to the switch fabric e System clock Supplies the synchronizing signal to all SFCs line cards and the RP The system clock synchronizes data transfers between line cards or between line cards and the RP through the switch fabric e Switch fabric Carries the user traffic between line cards or between the RP and a line card The switch fabric on the CSC is ident
3. CHAPTER 1 Product Overview This chapter provides an overview of the Cisco XR 12416 router It contains physical descriptions of the router hardware and major components as well as functional descriptions of the hardware related features Physical and Functional Description of Router The Cisco XR 12416 router chassis is a sheet metal enclosure that houses router components The major components consist of three power supplies upper and lower line card cages a switch fabric card cage and upper and lower blower modules Power is distributed to these components over the chassis backplane All router models contain the following major components Figure 1 1 e Power shelf and power supplies Three AC or DC power entry modules PEMs provide power to the router See the AC and DC Power Subsystems section on page 1 4 for additional information e Upper blower module Supplies cooling air to the upper half of the router so it does not overheat See the Blower Module section on page 1 30 for additional information e Upper and lower cable management brackets Used to neatly route line card cables See the Upper and Lower Cable Management Brackets section on page 1 30 for additional information I 0L 13833 01 Cisco XR 12416 Router Installation Guide n Chapter1 Product Overview W Physical and Functional Description of Router e Upper Line card and Route Processor card cage Has 8 user configurable
4. Cover with slotted screw hole fastens to standoff in middle of cable connection area Cisco XR 12416 Router Installation Guide i12 OL 13833 01 Chapter1 Product Overview Physical and Functional Description of Router W DC Power Supplies Each DC PEM operates from a nominal source DC voltage of 48 to 60 VDC and requires a dedicated 60 amp service Figure 1 9 identifies the components of a 2400 W DC power supply Figure 1 9 2400 W DC Power Supply Components O O O PWR OK FAULT TEMP 129494 1 Handle 3 Ejector lever 2 Fan 4 Power switch Cisco XR 12416 Router Installation Guide I 0L 13833 01 IE Chapter1 Product Overview W Chassis Card Cages The status LEDs on a DC PEM provide information about the current operational status of the power supply e PWR OK green Indicates that the power supply module is operating normally e FAULT yellow Indicates that a fault is detected within the PEM e TEMP yellow Indicates the PEM is in an overtemperature condition and shutdown has occurred For additional information about troubleshooting DC PEMs see the Troubleshooting a DC Power Supply section on page 4 10 Chassis Card Cages There are three integral card cages in the chassis the upper card cage the lower card cage and the switch fabric card cage see Figure 1 1 Upper Card Cage The upper card cage has eight user configurable slots that support a combin
5. A A router equipped with the optional AC input power subsystem stands 77 5 inches 196 85 cm tall and does not fit in a standard 7 foot 2 1 m rack The 4 power supplies in the optional power shelf participate in an N 2 redundant current sharing scheme in which current sharing is divided among all 4 power supplies Up to two power supplies can fail and the system can continue to operate temporarily depending on your system configuration using the remaining two power supplies Failed supplies should be replaced as soon as possible to ensure full redundancy Caution To ensure that the chassis configuration complies with the required power budgets use the on line power calculator Failure to properly verify the configuration may result in an unpredictable state if one of the power units fails Contact your local sales representative for assistance Cisco XR 12416 Router Installation Guide lt OL 13833 01 Chapter1 Product Overview Physical and Functional Description of Router W Figure 1 4 Optional AC Input Power Subsystem 27837 A Caution A router equipped with the optional AC power subsystem must be operated with 4 power supplies installed in the power shelf at all times for electromagnetic compatibility EMC Cisco XR 12416 Router Installation Guide I 0L 13833 01 ca Product Overview Chapter 1 W Physical and Functional
6. a ki K 4 A N E i S H ES Li Alarm card Ti R H Upper card cage gt eel Aid Air filter door gt Switch fabric card cage behind filter door ATA Alarm card TTT E Lower card cage gt E i i b NIBIEIE RIE a Bi Bs 3 Lower cable l ulala management ela bracket gt t Lower blower gt P e 3 module j Cisco XR 12416 Router Installation Guide I 0L 13833 01 E Chapter1 Product Overview Physical and Functional Description of Router AC and DC Power Subsystems A router ships with either an AC or DC powered system Source power connects to the power shelf at the back of the chassis which route power to the power supplies also referred to as power entry modules PEMs Standard AC Power Shelf The standard AC input power subsystem consists of a single level AC input power shelf that house three AC power supplies which supply full redundant power to the router The power supplies participate in an N 1 redundant current sharing scheme that is divided among all three power supplies If one power supply fails the system can continue to operate temporarily depending on your system configuration with the remaining two power supplies Failed power supplies should be replaced as soon as possible to ensure full redundancy
7. e PWR OK green Indicates that the power supply module is operating normally e FAULT yellow Indicates that a fault is detected within the PEM e TEMP yellow Indicates the PEM is in an overtemperature condition and shutdown has occurred e ILMI yellow Indicates the PEM is operating in a current limiting condition For additional information about troubleshooting AC PEMs see the Troubleshooting an AC Power Supply section on page 4 5 A DC input power subsystem consists of a DC input power shelf that houses 4 DC PEMs that provide full redundant power to the router Figure 1 7 shows a DC input power shelf The chassis is electrically divided between the PEMS These sections are referred to as power zones and are labeled accordingly e Two PEMs power the upper card cage Zone 1 e Two PEMs power the lower card cage Zone 2 Each zone provides power to one blower one alarm card line cards and route processor cards Zone 2 also supplies power to all switch fabric cards The result is that there is less power available for line cards in Zone 2 limiting the number of high powered line cards that can be configured in the lower cage Caution To ensure that the chassis configuration complies with the required power budgets contact your sales representative to provide you with the required power calculator Failure to properly verify the configuration may result in an unpredictable state if one of the power unit
8. flash memory to store multiple Cisco IOS XR software and microcode images that you can use to operate the router You can download new images to flash memory over the network or from a local server to replace an existing image or to add it as an additional image The router can be booted manually or automatically from any of the stored images in flash memory Flash memory also functions as a Trivial File Transfer Protocol TFTP server to allow other servers to boot remotely from the stored images or to copy them into their own flash memory The system uses two types of flash memory e Onboard flash memory called bootflash Contains the Cisco IOS boot image e Flash memory disks or cards Contain the Cisco IOS software image Table 1 3 lists supported flash disk sizes and Cisco part numbers Table 1 3 Supported Flash Disk Sizes Flash Disk Size Part Number 64 MB2 MEM 12KRP FD64 128 MB MEM 12KRP FD128 1 GB MEM 12KRP FD1G 1 Standard Type 1 and Type 2 linear flash memory cards also are supported although they may not have the capacity to meet the configuration requirements of your system 2 Default shipping configuration I 0L 13833 01 Cisco XR 12416 Router Installation Guide a Chapter1 Product Overview HI Blower Module Upper and Lower Cable Management Brackets The Cisco XR 12416 router includes upper and lower cable management brackets that work together with individual line card c
9. in the card cages e When the ambient air temperature is within the normal operating range the fans operate at their lowest speed which is 55 percent of the maximum speed e Ifthe air temperature rises inside the card cages the fan speed increases to provide additional cool air to the cards e Ifthe air temperature continues to rise beyond the specified threshold the system environmental monitor shuts down all internal power to prevent equipment damage due to excessive heat e If the system detects that one of the three fans within a blower module has failed it displays a warning message on the console window In addition the two remaining fans go to full speed to compensate for the loss of the one fan If another fan fails the system shuts down to prevent equipment damage For additional troubleshooting information see the Blower Module Operation section on page 4 31 Cisco XR 12416 Router Installation Guide I 0L 13833 01 13 Chapter1 Product Overview HZ Blower Module Cisco XR 12416 Router Installation Guide EEN OL 13833 01
10. other optional equipment for Telnet management e The console port A female receptacle that provides a data circuit terminating equipment DCE interface for connecting a console terminal PRP Reset Switch Access to the soft reset switch is through a small opening in the PRP front panel see Figure 1 11 To press the switch insert a paper clip or similar small pointed object into the opening A Caution The reset switch is not a mechanism for resetting the PRP and reloading the Cisco IOS image It is intended for software development use only To prevent system problems or loss of data use the reset switch only on the advice of Cisco service personnel Pressing the reset switch causes a nonmaskable interrupt NMI and places the PRP in ROM monitor mode When the PRP enters ROM monitor mode its behavior depends on the setting of the PRP software configuration register For example if the boot field of the software configuration register is set to e 0Ox0 The PRP remains at the ROM monitor prompt rommon gt and waits for a user command to boot the system manually e Ox1 The system automatically boots the first Cisco IOS image found in flash memory on the PRP Cisco XR 12416 Router Installation Guide EZE OL 13833 01 Chapter 1 Product Overview Route Processor W PRP Alphanumeric Message Displays The alphanumeric message displays are organized in two rows of four LED characters each Figur
11. scheme on the PRP which is determined by the network that the Ethernet port is connected to However even at an autosensed data transmission rate of 100 Mbps the Ethernet port can only provide a usable bandwidth of substantially less than 100 Mbps You can expect a maximum usable bandwidth of approximately 20 Mbps when using an Ethernet connection The following LEDs on the front panel indicate traffic status and port selection Figure 1 12 e LINK EN TX RX Indicate link activity LINK port enabled EN data transmission TX and data reception RX e PRIMARY Indicates which Ethernet port is selected ETH 0 or ETH 1 N Note Because both ports are supported on the PRP ETH 0 is always on ETH 1 lights when it is selected Figure 1 12 Port Activity LEDs Partial Front Panel ETH 0 ETH 1 Tomm MO a PRIMARY PRIMARY I 0L 13833 01 Cisco XR 12416 Router Installation Guide ai Chapter1 Product Overview HZ Route Processor PRP Auxiliary and Console Ports The auxiliary and console ports on the PRP are EIA TIA 232 also known as RS 232 asynchronous serial ports These ports connect external devices to monitor and manage the system e The auxiliary port A male plug that provides a data terminal equipment DTE interface The auxiliary port supports flow control and is often used to connect a modem a channel service unit CSU or
12. slots that support a combination of line cards a route processor RP and an alarm card See the Alarm Card and Line Card Overview section on page 1 18 for additional information e Switch fabric card cage Located behind the air filter door this card cage contains 5 slots for the switch fabric card set The switch fabric card set is made up of 3 switch fabric cards SFCs and 2 clock scheduler cards CSCs See the Switch Fabric Overview section on page 1 16 for additional information e Lower Line card and Route Processor card cage Has 8 user configurable slots that support a combination of line cards a redundant route processor RP and an alarm card See the Alarm Card and Line Card Overview section on page 1 18 for additional information e Lower blower module Supplies cooling air to the lower half of the router so it does not overheat See the Blower Module section on page 1 30 for additional information e Chassis backplane not shown Distributes power to card cages and to the blower modules Cisco XR 12416 Router Installation Guide OL 13833 01 Chapter1 Product Overview Physical and Functional Description of Router W Figure 1 1 Cisco XR 12016 Router Components Front View Power shelf and gt i E af 5 power supplies A 0 Upper blower gt d module E 3 Upper cable gt management a p bracket AiE i SALA LIL RP 2 eee
13. A Caution To ensure that the chassis configuration complies with the required power budgets use the on line power calculator Failure to properly verify the configuration may result in an unpredictable state if one of the power units fails Contact your local sales representative for assistance Cisco XR 12416 Router Installation Guide 14 g OL 13833 01 Chapter1 Product Overview Physical and Functional Description of Router W Figure 1 2 Standard AC Input Power Subsystem Caution A router equipped with the standard AC power subsystem must be operated with three power supplies installed in the power shelf at all times for electromagnetic compatibility EMC AC power to the router is provided through power cords connected from AC power outlets to connectors on back of the power shelf as shown in Figure 1 3 Figure 1 3 Standard Power Shelf AC Input Connections Power cord retention clip Cisco XR 12416 Router Installation Guide I 0L 13833 01 Aa Chapter1 Product Overview BI Physical and Functional Description of Router Optional AC Power Shelf N The power subsystem consists of a double level AC input power shelf with bays for 4 AC input power supplies Figure 1 4 shows the optional power shelf It attaches to the top of the router chassis and is secured to the chassis the same way as the standard AC input power shelf Note
14. Description of Router ded through power cords connected from AC is provi AC power to the router power outlets to the connectors on the back of the power shelf as shown in Figure 1 5 Optional Power Shelf AC Input Connections Figure 1 5 Power cords Oh CL LESCOTOCI Bese OCE COCO CESECES Cisco XR 12416 Router Installation Guide OL 13833 01 Chapter1 Product Overview Physical and Functional Description of Router W AC Power Supplies Each AC PEM converts 200 to 240 VAC into 48 VDC which is distributed through the chassis backplane to all cards RPs and the blower modules Figure 1 6 identifies the components of a 2500 W AC power supply Figure 1 6 2500 W AC Power Supply Components PwrOk Fault Temp 129495 O O O PwrOk Fault Temp OC 1 Ejector handle 2 Captive screw Cisco XR 12416 Router Installation Guide n I 0L 13833 01 Chapter1 Product Overview W Physical and Functional Description of Router DC Power Shelf A The status LEDs on an AC PEM provide information about the current operational status of the power supply
15. The PRP 2 communicates with the line cards either through the switch fabric or through the MBus The switch fabric connection is the main data path for routing table distribution as well as for packets that are sent between the line cards and the PRP 2 The MBus connection allows the PRP 2 to download a system bootstrap image collect or load diagnostic information and perform general internal system maintenance operations The PRP 2 can be designated as either the Designated System Controller DSC or the Secure Domain router SDR The Designated System Controller DSC performs the following functions e Implements control plane operations for the chassis e Monitors temperature and voltage e Monitors line cards e On boot up the first card to become active is designated as the DSC The Secure Domain Router SDR controls domain security features independent of any other SDRs on the network I 0L 13833 01 Cisco XR 12416 Router Installation Guide ai Chapter1 Product Overview HZ Route Processor Performance Route Processor Overview The performance route processor PRP uses a Motorola PowerPC 7450 CPU that runs at an external bus clock speed of 133 MHz and has an internal clock speed of 667 MHz Figure 1 11 identifies the slots ports and LEDs on the PRP front panel Figure 1 11 Performance Route Processor Front Panel AUX CONSOLE
16. able management brackets to organize interface cables entering and exiting the router see Figure 1 1 Network interface cables to the line cards are fed across the brackets and then through the openings to the individual line card cable management bracket This system keeps cables out of the way and free of sharp bends A Caution Excessive bending of interface cables can damage the cables Blower Module The router has two blower modules to distribute air within the chassis One blower module is located above the upper card cage the second blower module is located below the lower card cage see Figure 1 1 Cisco XR 12416 Router Installation Guide EEN OL 13833 01 Chapter 1 Product Overview Blower Module W Each blower module contains three variable speed fans and a controller card The two front cover LEDs provide a visual indication of blower module status Figure 1 15 Figure 1 15 Blower Module LEDs OK green All three fans are operating normally FAIL red The system has detected a fan failure or other fault in the blower module The fault can be caused by any of the following One or more fans are not operating One or more fans are running below speed Acontroller card fault The blower modules maintain acceptable operating temperatures for the internal components by drawing cool air through a replaceable air filter into the switch fabric card cage and then through the up
17. ation of line cards an alarm card and an RP e Alarm tThe far left slot is a dedicated slot for an alarm card e Slots 0 through 6 Can be populated with any line cards supported by the router e Slot 7 The far right slot is reserved for the RP Cisco XR 12416 Router Installation Guide EE OL 13833 01 Chapter1 Product Overview Chassis Card Cages W Lower Card Cage The lower card cage also has eight user configurable slots that support additional line cards an alarm card and an optional redundant RP N Note The lower card cage is an inverted or head down copy of the upper card cage which means that cards are installed in an inverted or head down orientation The orientation of the slots is opposite that of the upper card cage e Slot 8 The far left slot is reserved for an optional redundant RP N Note This slot may be used for a line card if you are not using an redundant RP e Slots 9 through 15 Can be populated with any line cards supported by the router e Alarm The far right slot is a dedicated slot for an alarm card Switch Fabric Card Cage The router ships from the factory with 2 CSCs and 3 SFCs installed in five of the eight slots in the switch fabric card cage e The 2 CSCs are installed in slot 0 CSCO or slot 1 CSC1 e The 3 SFCs are installed in slot 2 SFCO slot 3 SFC1 and slot 4 SFC2 e Three non working slots with no backplane connectors These no
18. card installed in that slot is faulty FAIL yellow The card in that slot is faulty Figure 1 10 Alarm Card Components and LEDs Critical major and Handle minor alarm LEDs _ 0 D 399 Oli ALARM f Pin 25 Clock and scheduler card Audio alarm and switch fabric card LEDs cutoff switch Cisco XR 12416 Router Installation Guide I 0L 13833 01 EEE Chapter1 Product Overview HZ Route Processor Line Cards A Up to 15 Cisco XR 12416 router line cards can be installed in the routers upper and lower card cages to support a variety of physical network media Ports and connectors on the line card front panels provide interfaces for external connections Line cards communicate with the RP and exchange packet data with each other through the switch fabric cards Caution N Any unoccupied card slot in the upper and lower card cages must have a blank filler panel installed to meet electromagnetic compatibility EMC requirements and to ensure proper air flow through the chassis Also if the front panel of a line card does not completely fill the card slot opening a narrow card filler panel must be installed to meet the EMC requirements A cable management bracket on the front panel of each line card helps to organize the interface cables connected to that line card The following line cards SIPs and SPAs are supported on the Cisco XR 12416 router Note Refer to the current s soft
19. e 1 13 Figure 1 13 Alphanumeric Message Displays Partial Front Panel 7 lt __ Upper alphanumeric LED display four digits lt lt Lower alphanumeric LED display four digits AOSS The alphanumeric message displays show router status messages during the boot process and after the boot process is complete e During the boot process the message displays are controlled directly by the MBus module e After the boot process the message displays are controlled by Cisco IOS XR software through the MBus The alphanumeric messages also provide information about different levels of system operation including the status of the PRP router error messages and user defined status and error messages Note A list of all system and error messages appears in the Cisco IOS System Error Messages publication see the Obtaining Documentation Obtaining Support and Security Guidelines section on page xiv I 0L 13833 01 Cisco XR 12416 Router Installation Guide ai Chapter 1 Product Overview HZ Route Processor PRP Memory Components This section describes various types of memory used on the PRP to support router functions Table 1 1 provides a quick reference of the different types of memory and Figure 1 14 shows the location on the PRP board Table 1 1 PRP Memory Components Type Size Quantity Descr
20. ical to the switch fabric on the SFC The second CSC provides redundancy for the data path scheduler and reference clock Traffic between the line cards and the switch fabric is monitored constantly If the system detects a loss of synchronization LOS it automatically activates the data paths on the redundant CSC so data flows across the redundant paths The switch to the redundant CSC occurs within sub seconds the actual switch time depends on your configuration and its scale Switch Fabric Cards The switch fabric cards augment the traffic capacity of the router SFCs contain switch fabric circuitry that can only carry user traffic between line cards or between the RP and the line cards SFCs receive all scheduling information and the system clock signal from the CSCs Cisco XR 12416 Router Installation Guide I 0L 13833 01 EELE Chapter1 Product Overview HH Alarm Card and Line Card Overview Alarm Card and Line Card Overview N This section provides general information about alarm cards line cards and types of route processors installed in the router Note Alarm Cards The Cisco XR 12416 router supports online insertion and removal OIR which allows you to remove and replace a card while the router remains powered on The router is equipped with 2 alarm cards e One alarm card occupies the dedicated far left slot of the upper card cage e The other alarm card occupies the dedicated far right slot of
21. iption Location SDRAM 512 MB lor2 Uses 512 MB or 1 GB DIMMs based on U15 bank 1 1 GB or 2 GB SDRAM configuration for main U18 bank 2 Cisco IOS XR software functions SRAM 2 MB fixed Secondary CPU cache memory functions NVRAM 2 MB fixed System configuration files register settings and logs Flash 64 MB SIMM 1 Cisco IOS XR boot image bootflash crash P3 memory information and other user defined files Flash disk 64 MB lor2 Cisco IOS XR software images system Flash memory PCMCIA configuration files and other user defined card slot 0 and files on one or two Flash memory cards slot 1 Flash boot 512 KB 1 Flash EPROM for the ROM monitor program ROM boot image 1 Default shipping configuration Cisco XR 12416 Router Installation Guide OL 13833 01 Chapter1 Product Overview Route Processor W Figure 1 14 PRP Memory Locations a Sti AEA PCMCIA slot 1 and slot 2 behind cover Cisco XR 12416 Router Installation Guide I 0L 13833 01 127 Chapter1 Product Overview HZ Route Processor PRP SDRAM The PRP uses Error Checking and Correction ECC Synchronized Dynamic Random Access Memory SDRAM to store routing tables protocols network accounting applications and to run Cisco IOS software Table 1 2 lists the DRAM configurations for the PRP If yo
22. n working slots are not labeled but there is a blank filler panel installed in the far left slot to help maintain proper air flow through the chassis A Caution Do not remove the blank filler panel unless instructed to do so by a Cisco support representative Cisco XR 12416 Router Installation Guide I 0L 13833 01 ais Chapter1 Product Overview Hs Switch Fabric Overview Switch Fabric Overview Note N The switch fabric provides synchronized gigabit speed connections between line cards and the RP The switch fabric card cage is located behind the air filter door and consists of 2 clock and scheduler cards CSCs and 3 switch fabric cards SFCs One CSC and the 3 SFCs are the active switch fabric the second CSC provides redundancy for the other 4 cards 10 Gbps switch fabrics do not operate in 1 4 bandwidth mode as they did in some earlier models of the Cisco 12000 series routers You must have at least one CSC and three SFCs for the system to function You can add an additional CSC for redundancy Each SFC or CSC provides 10 Gbps full duplex connection to each line card in the system For example in a Cisco XR 12416 router with 16 line cards each with 2 x 10 Gbps capacity full duplex the system switching bandwidth is 16x 20 Gbps 320 Gbps Note The Cisco XR 12416 router supports online insertion and removal OIR which allows you to remove and replace a card while the router remains powered on
23. per and lower card cages Figure 1 16 illustrates the air flow path through the chassis I 0L 13833 01 Cisco XR 12416 Router Installation Guide a Chapter1 Product Overview HI Blower Module Figure 1 16 Cooling Air Flow gt Top blower module gt i Plenum Air filter Lo Room air md Plenum Bottom blower module gt L Front wore supply shelf es mm Air exhaust lt Upper card cage lt Middle card cage lt Lower card cage mu Air exhaust Rear 26204 To ensure that there is adequate air flow to prevent overheating inside the card cages keep the front and back of the router unobstructed We recommend at least 6 inches 15 24 cm of clearance Cisco XR 12416 Router Installation Guide OL 13833 01 Chapter1 Product Overview Blower Module W A Caution You should inspect and clean the air filter one time per month more often in dusty environments Do not operate the router without an air filter installed The blower module controller card monitors and controls operation of three variable speed fans in the blower modules The variable speed feature allows quieter operation by running the fans at below maximum speed while still providing adequate cooling to maintain an acceptable operating temperature inside the card cages Two temperature sensors on each line card monitor the internal air temperature
24. s fails Contact your local sales representative for assistance Cisco XR 12416 Router Installation Guide i10 OL 13833 01 Chapter1 Product Overview A Physical and Functional Description of Router W In the DC input power configuration e Modules Al and BI provide redundant power for system load zone the upper blower module and the upper card cage e Modules A2 and B2 provide redundant power for system load zone 2 the switch fabric card cage the lower card cage and the lower blower module Figure 1 7 DC Input Power Shelf Caution N A router configured for source DC operation must be operated with 4 DC input PEMs installed at all times for electromagnetic compatibility EMC Note DC PEMs support online insertion and removal OIR which means that you can remove and replace one PEM in each load zone A1 or B1 A2 or B2 while the system remains powered on DC power to the router is provided from cables from a DC power source that are connected to threaded terminal studs on the back of the DC input power shelf as shown in Figure 1 8 I 0L 13833 01 Cisco XR 12416 Router Installation Guide n Chapter1 Product Overview BI Physical and Functional Description of Router Figure 1 8 DC Input Power Shelf Connections A1 A1 A2 A2 B2 B2 Bi BI Ground oa o oo oO le oO OG GC 0 6 g O 27964
25. the lower card cage The alarm card slots differ from the rest of the card cage slots in that it is labeled as an alarm card slot is physically narrower than the other slots and has a different backplane connector Some of the functions that the alarm cards provide are e Supplies 5 VDC to the MBus modules on router components see AC and DC Power Subsystems page 1 4 e Displays alarm severity levels critical major and minor detected by the system through the MBus e Provides connections for an external alarm system e Displays the status of the alarm cards clock scheduler cards and switch fabric cards The following components and LEDs are on the front panel of the alarm card Figure 1 10 e Critical Major and Minor LEDs that identify system level alarm conditions e A switch to shut off an audio alarm e Cable connection for an external alarm labeled Alarm e Alarm card LEDs Cisco XR 12416 Router Installation Guide Pais i OL 13833 01 Chapter1 Product Overview Alarm Card and Line Card Overview W ENABLED green The alarm card is operational and functioning properly FAIL yellow The alarm card in that slot is faulty e A pair of status LEDs that correspond to each of the 5 card slots in the switch fabric card cage 2 CSCs and 3 SFCs ENABLED green On The card installed in that slot is operational and functioning properly Off Either the slot is empty or the
26. u are using e One DIMM Bank 1 U15 must be populated first e Two DIMMs You cannot mix memory sizes both banks must contain the same size DIMM Table 1 2 PRP DRAM Configurations Total SDRAM SDRAM Sockets Number of DIMMs 512 MB U15 bank 1 One 512 MB DIMM U18 bank 2 or Two 256 MB DIMMs 1 GB U15 bank 1 One 1 GB DIMM U18 bank 2 or Two 512 MB DIMMs 2 GB U15 bank 1 Two 1 GB DIMMs U18 bank 2 1 Default shipping configuration A Caution DRAM DIMMs must be 3 3 volt 60 nanosecond devices only Do not attempt to install other devices in the DIMM sockets To prevent memory problems use the Cisco approved memory products listed in Table 1 2 PRP SRAM Static Random Access Memory SRAM provides 2 MB of secondary CPU cache memory Its principal function is to act as a staging area for routing table updates and for information sent to and received from the line cards SRAM is not user configurable and cannot be upgraded in the field Cisco XR 12416 Router Installation Guide E OL 13833 01 Chapter1 Product Overview PRP NVRAM Route Processor W Non volatile Random Access Memory NVRAM provides 2 MB of memory for system configuration files software register settings and environmental monitoring logs Built in lithium batteries retain the contents of NVRAM for a minimum of 5 years NVRAM is not user configurable and cannot be upgraded in the field PRP Flash Memory Use
27. ware release notes for the most up to date list of supported line cards see Obtaining Documentation Obtaining Support and Security Guidelines section on page xiv Route Processor The route processor for the Cisco XR 12416 router is the Performance Route Processor PRP 2 For detailed information about the PRP 2 refer to the Cisco document Performance Route Processor Installation and Configuration Guide The PRP 2 performs the following primary functions e Executes routing protocol stacks e Performs all protocol communications with other routers e Builds and distributes forwarding information to all line cards Cisco XR 12416 Router Installation Guide EEN OL 13833 01 Chapter 1 Product Overview Route Processor W e Uploads the operating system software images to all installed line cards during power up e Provides out of band system console and auxiliary ports and an Ethernet port for router configuration and maintenance e Monitors and manages the power and temperature of system components such as line cards power supplies and fans The Cisco PRP 2 delivers all these functions with enhanced performance and capabilities It also delivers the following feature enhancements depending on the software version running e 2 Ethernet management ports e Hard drive support optional part e BITS input ports e 1 GB compact image Flash memory support optional part e Memory scalability up to 4 GB
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