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Cisco Product Numbers: MEM-DFT-GRP/LC-64=, MEM-GRP/LC-128=, MEM-GRP/LC-256=, MEM-LC-PKT-64=, MEM-LC-PKT-128=, MEM-LC1-PKT-256=, MEM-PKT-512-UPG=
This document describes procedures for upgrading or replacing memory on the Cisco 12000 series Gigabit Route Processor (GRP) and the Cisco 12000 series Gigabit Switch Router (GSR) line cards.
This document contains the following sections:
Your router and the Cisco IOS software running on it contain extensive features and functionality, which are documented in the following resources:
Of the circuit cards used in the Cisco 12000 series Gigabit Switch Routers, the following cards are relevant to this publication:
The GRP and the Cisco 12000 series GSR line cards use the following types of memory:
Of the various types of memory used on the GRP and the line cards, only two types of memory are user-configurable (that is, memory that can be upgraded in the field): main or route memory (dynamic random access memory or DRAM) and packet memory (synchronous dynamic random access memory or SDRAM).
The following sections describe the user-configurable memory on the GRP and the line cards in greater detail.
The processor on the GRP uses onboard DRAM to perform a variety of important tasks for Cisco 12000 series routers, including the following:
Figure 1 shows the locations of the processor memory DRAM DIMM sockets and the Flash memory SIMM socket on the GRP.
The two route memory DIMM sockets on the GRP, labeled U39 (route memory bank 1) and U42 (route memory bank 2), respectively, enable you to configure route memory in desired increments ranging from 128 MB to 256 MB. Table 1 lists the available route memory configurations and associated product numbers for the Cisco 12000 series GRP. The default route memory configuration is 128 MB. If the GRP is currently equipped with one 64-MB DIMM in socket U39, you can upgrade memory by installing a second 64-MB DIMM in socket U42, or by removing the existing 64-MB DIMM and replacing it with one 128-MB DIMM.
| Total Route Memory | Cisco Product Number | DIMM Modules | DRAM DIMM Sockets |
128 MB | MEM-DFT-GRP/LC-1281 | 1 128-MB DIMM | U39 |
128 MB | MEM-GRP/LC-64=2 | 2 64-MB DIMM | U39 and U42 |
128 MB | MEM-GRP/LC-128= | 1 128-MB DIMM | U39 |
256 MB | MEM-GRP/LC-256= | 2 128-MB DIMMs | U39 and U42 |
| 1Standard (default) DRAM DIMM configuration for the processor on a GRP is 128 MB. 2For GRPs equipped with the previous default of 64 MB, this option adds a second 64-MB DIMM for a total of 128 MB. |
There are two types of user-configurable line card memory:
Line card memory configurations and memory socket locations differ, depending on the type of line card. In general, all line cards share a common set of memory configuration options for processor or route memory, but support different default and maximum configurations for packet memory. For clarity in describing how to perform memory upgrades and replacements in this publication, line cards fall into the following groups, based on certain physical characteristics:
The general characteristics that determine which engine type a line card belongs to are as follows:
Figure 2 shows the DIMM socket locations on a sample Engine 0 and Engine 1 line card. Engine 0 and Engine 1 line cards are equipped with six DIMM sockets:
Figure 3 shows the DIMM socket locations on a sample Engine 2 line card. Engine 2 line cards are equipped with eight DIMM sockets:
Route memory is line card DRAM that runs the Cisco IOS software image and stores the updated network routing tables downloaded from the GRP. Line card route memory ranges from 64 MB to 256 MB. The default route memory configuration for the line card is 64 MB (one 64-MB DIMM in the route memory DRAM DIMM0 socket). Figure 2 and Figure 3 show the locations of the two DRAM DIMM sockets for Engine 0 and Engine 1 line cards and Engine 2 line cards, respectively. Table 2 lists the available route memory configurations and associated product numbers of DRAM DIMMs for upgrading route memory on the Cisco 12000 series GSR line cards. The default line card route memory configuration is 64 MB.
| Total Route Memory | Cisco Product Number | DIMM Module | Route Memory DIMM Sockets |
64 MB | MEM-DFT-GRP/LC-641 | 1 64-MB DIMM | DIMM0 |
128 MB | MEM-GRP/LC-64= | 2 64-MB DIMMs | DIMM0 and DIMM1 |
128 MB | MEM-GRP/LC-128= | 1 128-MB DIMM | DIMM0 |
256 MB | MEM-GRP/LC-256= | 2 128-MB DIMMs2 | DIMM0 and DIMM1 |
Line card packet memory temporarily stores data packets awaiting switching decisions by the line card processor. Once the line card processor makes the switching decisions, the packets are propagated into the router's switch fabric for transmission to the appropriate line card.
Engine 0/ Engine 1 line cards (see Figure 2) include four SDRAM DIMM sockets for packet buffer memory. These sockets are paired as follows:
Engine 2 line cards (see Figure 3) include four SDRAM DIMM sockets for buffer memory. These sockets are paired as follows:
Engine 2 line cards are also equipped with one SDRAM DIMM socket for PLU memory (see Figure 3) and one SDRAM DIMM socket for TLU memory. PLU and TLU memory are not currently user-configurable.
Table 3 lists the available packet memory configuration options for upgrading transmit and receive buffer memory on Cisco 12000 series GSR line cards. Cisco packet memory configuration options consist of four DIMMs of the same type and size (two DIMMs for the Rx socket pair and two DIMMs for the Tx socket pair). The actual default and maximum packet memory configuration options depend on the type of line card. Table 4 references engine types for each available Cisco 12000 series GSR line card.
| Engine Number | Total Packet Memory | DIMM Modules | Cisco Product Number |
Engine 0 (200-pin DIMMS) | 128 MB (replacement) not upgradeable | Two 32-MB DIMMs Rx; | MEM-LC-PKT-128= |
Engine 1 (168-pin DIMMS) | 256 MB (replacement) not upgradeable | Two 64-MB DIMMs Rx; | MEM-LC1-PKT-256= |
Engine 2 (168-pin DIMMS) | 256 MB (replacement) 512 MB (upgrade) | Two 64-MB DIMMs Rx; or Two 128-MB DIMMs Rx; | MEM-LC1-PKT-256= |
Table 4 lists Cisco 12000 line cards and the engine type associated with each line card.
| Line Card Type and Name | Cisco Product Number | Engine Type |
|---|---|---|
ATM |
|
|
Quad OC-3c/STM-1c ATM | 4OC3/ATM-IR-SC(=) | Engine 0 |
Quad OC-12c/STM-4c ATM | 4OC12/ATM-IR-SC(=) | Engine 2 |
OC-12c/STM-4c ATM | LC-1OC12/ATM-SM(=) | Engine 0 |
CHANNELIZED |
|
|
Channelized OC-12 to DS3 | LC-OC12-DS3(=) | Engine 0 |
Channelized OC-12/STM-4 IR-SC STS3/STM1 | CHOC12/STS3-IR-SC(=) | Engine 0 |
DS3 |
|
|
12-Port DS3 | 12DS3-SMB(=) | Engine 0 |
FE |
|
|
Fast Ethernet | 8FE-FX-SC(=) | Engine 1 |
GE |
|
|
Gigabit Ethernet | GE-SX/LH-SC(=) | Engine 1 |
3-Port Gigabit Ethernet | 3GE-GBIC-SC(=) | Engine 1 |
POS |
|
|
Quad OC-3c/STM-1c POS | LC-4OC3/POS-SM(=) | Engine 0 |
Quad OC-12c/STM-4c Layer 3 POS | 4OC12/POS-IR-SC(=) | Engine 1 |
Enhanced Quad OC-12c/STM-4c Layer 3 POS | 4OC12E/POS-IR-SC(=) | Engine 2 |
8xOC3 | 8OC3/POS-MM | Engine 2 |
OC-12c/STM-4c POS | LC-1OC12/POS-SM(=) | Engine 0 |
16xOC3 | 16OC3/POS-MM(=) | Engine 2 |
OC-48c/STM-16c Layer 3 POS | OC48/POS-SR-FC(=) | Engine 1 |
Enhanced OC-48c/STM-16c Layer 3 POS | OC48E/POS-SR-FC(=) | Engine 2 |
SRP |
|
|
OC-12c/STM-4c Packet-Over-SONET Line Card Installation and Configuration | OC12/SRP-MM-SC(=) | Engine 1 |
Before you begin the replacement procedure, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment. This section also repeats in multiple languages the warnings in this document.
In addition, review the safety warnings listed in the document Regulatory Compliance and Safety Information for the Cisco 12000 Series Gigabit Switch Router (Document Number 78-4347-xx) that accompanied your Cisco 12000 series router before you install, configure, or perform maintenance on the router.
Following are translations for the warning statement used in this document:
 | Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device. |
Waarschuwing Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information (Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is ingesloten.
Varoitus Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien varoitusten käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).
Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements figurant dans cette publication, consultez le document Regulatory Compliance and Safety Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet appareil.
Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information (Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät geliefert wurde.
Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che accompagna questo dispositivo.
Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble levert med denne enheten.
Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições Reguladoras) que acompanha este dispositivo.
¡Advertencia! Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. Para ver una traducción de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and Safety Information (Información sobre seguridad y conformidad con las disposiciones reglamentarias) que se acompaña con este dispositivo.
Varning! Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.
The following guidelines will help ensure your safety and protect the equipment. This list is not inclusive of all potentially hazardous situations, so be alert.
Follow these basic guidelines when working with any electrical equipment:
In addition, observe the following guidelines when working with any equipment that is disconnected from a power source, but still connected to telephone or network wiring:
Electrostatic discharge (ESD) damage, which can occur when electronic boards or components are handled improperly, can result in complete or intermittent failures.
Following are guidelines for preventing ESD damage:
 | Caution You should periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms. |
You will need the following tools and parts to install or replace memory on the Cisco 12000 series GRP or line cards:
This section describes how to replace or upgrade the route memory DRAM DIMMs on the GRP.
This section contains the following procedures:
If you are upgrading the memory by adding a matching DRAM DIMM to an existing single-DIMM configuration (only socket U39 is occupied), use the procedure in the "Installing a New DIMM on the GRP" section. For example, if you want to upgrade memory from 64 MB to 128 MB (two 64-MB DIMMs) or from 128 MB to 256 MB (two 128-MB DIMMs), you can install the appropriate DRAM DIMM in socket U42.
If you are replacing a defective DRAM DIMM or performing a memory upgrade that requires the existing DRAM DIMMs to be removed, you must first remove the existing DIMMs. In that case, use the procedure in the "Removing Route Memory DIMMs from a GRP" section. When you have removed the DIMM from the GRP, proceed to the "Installing a New DIMM on the GRP" section. For example, if you want to upgrade memory from 64 MB to 128 MB (one 128-MB DIMM) or 256 MB (two 128-MB DIMMs), you must remove the existing DIMM before installing the new DIMMs.
Figure 4 is an example that shows the steps involved in removing the GRP from its card cage slot in a Cisco 12012 GSR. The steps shown apply equally to GRPs installed in other Cisco 12000 series routers. For more information on removing the GRP from your Cisco 12000 series router, refer to the installation and configuration guide that accompanied your router.
| Caution
A GRP that is only partially removed from the backplane will halt the router. |
To remove the GRP from its card cage slot, use Figure 4 as a reference and perform the following steps:
Step 1 If the router is equipped with a single GRP, shut down the router as instructed in the installation and configuration guide that accompanied your router.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 Disconnect the console terminal cable and any auxiliary or Ethernet interface cables attached to the ports on the faceplate of the GRP. Set the cables aside.
Step 4 Loosen the captive screw at each end of the GRP faceplate. (See Figure 4a.)
Step 5 Place your thumbs on the ejector levers and simultaneously pivot the ejector levers away from each other to unseat the GRP from the backplane connector. (See Figure 4b.)
Step 6 Grasp both ejector levers and pull the GRP straight out of the slot approximately half way. Avoid touching the board or any connector pins.
Step 7 Grasp the GRP faceplate with one hand and place your other hand under the carrier to support it. (See Figure 4c.) Slide the GRP out of the slot and place it immediately on an antistatic mat to protect it against ESD.
This completes the GRP removal procedure. Go to the next section for the procedure to remove the processor memory DIMMs from the GRP.
If you are upgrading the memory by adding a matching DRAM DIMM to an existing single-DIMM configuration (only socket U39 occupied), use the procedure in the "Installing a New DIMM on the GRP" section. For example, if you want to upgrade memory from 64 MB to 128 MB (two 64-MB DIMMs) or from 128 MB to 256 MB (two 128-MB DIMMs), you can install the appropriate DRAM DIMM in socket U42.
If you are replacing a defective DRAM DIMM or performing a memory upgrade that requires the existing DRAM DIMMs to be removed, use the following procedure. For example, if you want to upgrade memory from 64 MB to 128 MB (one 128-MB DIMM) or 256 MB (two 128-MB DIMMs), you must remove the existing DIMM before installing the new DIMMs.
To remove a DIMM from a GRP, perform the following steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Position the GRP on the antistatic mat so that the faceplate is toward you and the backplane connector is away from you.
Step 3 Locate the route memory DIMMs on the GRP. (See Figure 1.) The DIMMs occupy U39 (bank 1) and U42 (bank 2).
Step 4 For the DIMM you want to remove, pull down the lever on the DIMM socket to release the DIMM from the socket. (See Figure 5.)
| Caution Handle the edges of the DIMM only. (See Figure 6.) Do not touch the integrated circuit devices on the DIMM, the metal traces, or fingers, along the edge of the DIMM, or the pins in the DIMM socket. |
Step 5 When one end of the DIMM is released from the socket, grasp each end of the DIMM with your thumb and forefinger and pull the DIMM completely out of the socket.
Step 6 Place the DIMM in an antistatic sack to protect it from ESD damage.
Repeat Step 4 through Step 6 for the remaining DIMM, if required for your upgrade.
This completes the DIMM removal procedure. Proceed to the next section to install the new DIMMs.
This section describes how to install a new DIMM on the GRP.
| Caution To prevent router and memory problems when installing DRAM, the card's DRAM DIMMS must be 3.3-volt, 60-ns, extended data output (EDO) devices. Do not attempt to install other DRAM devices in the GRP's DIMM sockets. |
| Caution DIMMs are sensitive electronic components that can be damaged by ESD and contaminated by mishandling. Do not touch the integrated circuit devices on the DIMM, the metal traces, or fingers, along the edge of the DIMM, or the pins in the DIMM socket. |
Perform the following steps to install the new DIMMs:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Place the GRP on an antistatic mat or pad and position the GRP so that the faceplate is toward you and the backplane connector is away from you.
Step 3 Locate the two DRAM DIMM sockets on the GRP, labeled as follows (see Figure 1):
Step 4 Remove a new DIMM from the antistatic sack.
Step 5 Hold the DIMM component-side up, with the connector edge (the metal fingers) closest to you. Hold the ends of the DIMM between your thumb and forefinger. (See Figure 6.)
Step 6 Tilt the DIMM to the same angle as the socket and insert the entire connector edge into the socket. The two notches (keys) on the bottom edge of the module ensure that the DIMM edge connector is registered properly in the socket.
| Caution When inserting DIMMs, use firm but not excessive pressure. If you damage a socket, you will have to return the GRP to the factory for repair. |
Step 7 Gently push the DIMM into the socket until the lever is flush against the side of the DIMM socket and the DIMM's edge connector is fully inserted. (See Figure 7.) If necessary, rock the DIMM gently back and forth to seat it properly.
Step 8 When the DIMM is installed, check that the release lever is flush against the side of the DIMM socket. If it is not, the DIMM might not be seated properly. If the DIMM appears to be misaligned, carefully remove it and reseat it in the socket. Push the DIMM firmly back into the socket until the release lever is flush against the side of the DIMM socket.
Repeat Step 4 through Step 8 to install the remaining DIMM, as required.
This completes the DIMM replacement procedure.
Proceed to the next section and perform the procedure to replace the GRP in the card cage slot from which you removed it. If the router is equipped with a single GRP, you will need to restart the router before you can perform an installation check. If the router is equipped with an optional, redundant GRP, the GRP you return to the card cage will power up and reinitialize when it is seated in the backplane connector.
After verifying that the DRAM DIMMs are properly installed in the GRP, reinstall the GRP in the appropriate card cage slot. For more information on reinstalling the GRP in your Cisco 12000 series router, refer to the installation and configuration guide that accompanied your Cisco 12000 series router.
To reinstall the GRP in the card cage, perform the following steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Grasp the faceplate of the GRP with one hand and place your other hand under the card carrier to guide the GRP into the selected card cage slot.
Step 3 Slowly slide the card carrier into the slot until the ejector levers make contact with the front of the card cage.
Step 4 Ensure that the ejector levers engage the lip on the front of the card cage.
Step 5 Grasp the two card ejector levers and pivot them toward the GRP faceplate until they are perpendicular to the card faceplate to seat the card in the backplane.
Step 6 Tighten the captive screw at each end of the GRP faceplate.
Step 7 Reconnect the console terminal cable and any auxiliary or Ethernet interface cables to the appropriate connectors on the GRP faceplate.
Proceed to the next section to verify the installation of the DRAM DIMMs on the GRP.
Turn on power and allow the router to reboot. The time required for the router to initialize might vary with different router configurations and DRAM configurations. Routers with 256 MB of DRAM might take longer to boot than those with less DRAM. If the router fails to boot properly or if the console terminal displays a checksum or memory error after you have installed new DIMMs, check the following:
If the router fails to restart properly after several attempts, contact a Cisco customer service representative for assistance. Before you call, make note of any error messages, unusual LED states, or any other indications that might help solve the problem.
The Cisco 12000 series GSR line cards use the following types of user-configurable memory:
Both route memory and packet memory can be upgraded in the field. Before beginning the DRAM or SDRAM replacement procedures in this section, ensure that you have the proper tools and equipment at hand, and that you are using appropriate ESD-prevention equipment and techniques. Refer to Table 2 for the available DRAM DIMM options or Table 4 for the available SDRAM DIMM options that you can use for configuring memory, and observe the following guidelines.
This section contains the following procedures:
This section describes how to remove a line card from the router. Line cards support online insertion and removal, meaning you can remove and replace line cards while the router remains powered up. For more information on removing a line card from your Cisco 12000 series router, refer to the installation and configuration guide that accompanied your router.
To remove a line card from a Cisco 12000 series router, perform the following steps:
Step 1 If you have not already done so, remove the card cage front cover by grasping the outside edges of the front cover and pulling it straight out to detach the front cover from the ball stud sockets on the front of the card cage.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 Disconnect all network interface cables from the ports on the line card faceplate.
Step 4 Before you remove a line card from a Cisco 12000 series router, you must first remove the line card cable-management bracket attached to the line card faceplate. To do so, perform the following steps:
(a) Loosen the two captive installation screws at the top and bottom of the line card cable-management bracket (see Figure 8).
(b) Detach the cable-management bracket from the line card and move the bracket and cables out of the way.
Step 5 Loosen the captive screw at each end of the line card faceplate. (See Figure 9a.)
Step 6 Pivot the two card ejector levers out, away from the line card faceplate to unseat the card from the backplane. (See Figure 9b.)
Step 7 Grasp the line card faceplate with one hand and pull the line card straight out of the slot, keeping your other hand under the line card to guide it. Avoid touching the line card printed circuit board, components, or any edge connector pins. (See Figure 9c.)
Step 8 Place the removed line card on an antistatic mat or foam.
This completes the line card removal procedure. Go to the next section for the procedure to remove the DRAM DIMMs from the line card.
Line card memory consists of DRAM DIMMs for the line card's processor, as well as SDRAM DIMMs for the line card's transmit and receive packet buffers. The locations of the DIMM sockets for these two types of line card memory are shown in Figure 2 and Figure 3.
To remove a DIMM from a line card, perform the following steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Place the line card on an antistatic mat so that the faceplate is nearest to you.
Step 3 Locate the DIMM sockets on the line card (see Figure 2 and Figure 3).
Step 4 For the DIMM you want to remove, use the socket release levers to eject the DIMM.
Step 5 As one end of the DIMM is released, grasp the top corners of the DIMM with the thumb and forefinger of each hand and pull the DIMM completely out of its socket.
Step 6 Immediately place the DIMM in an antistatic sack to protect it from ESD damage.
Repeat Step 4 through Step 6 for any remaining DIMMs that you want to remove.
Proceed to the following section to install new DIMMs in the line card.
To install new DRAM or SDRAM DIMMs in a Cisco 12000 series GSR line card, perform the following steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Place the line card on an antistatic mat so that the faceplate is nearest to you.
| Caution To prevent router and memory problems, all DIMMs installed in the line card must be 3.3-volt devices. |
Step 3 Remove the new DIMM from its protective antistatic sack.
Step 4 Grasp the edges of the DIMM only. (See Figure 6.) Do not touch the integrated circuit devices on the DIMM, the metal traces, or fingers, along the edge of the DIMM, or the pins in the DIMM socket.
Step 5 To position the DIMM for insertion, orient it at the same angle as the DIMM socket. The two notches (keys) on the bottom edge of the module ensure that the DIMM edge connector is registered properly in the socket.
If necessary, rock the DIMM back and forth gently to align it in the socket.
| Caution When inserting DIMMs into a socket, apply firm, but not excessive, pressure. If you damage a DIMM socket, you must return the line card to the supplier for repair. |
Step 6 Gently insert the DIMM into the socket and push until the DIMM snaps into place and the release lever is flush against the side of the socket. (See Figure 7.)
Step 7 Verify that the release lever is flush against the side of the socket. If it is not, the DIMM might not be seated properly. On a socket with dual release levers, both levers should be flush against the sides of the DIMM.
If the module appears misaligned, carefully remove it and reseat it, ensuring that the release lever is flush against the side of the DIMM socket.
Repeat Step 3 through Step 7 to install any remaining DIMMs for your memory configuration. Go to the next section for the procedure to reinstall the line card in the router.
After verifying that the DRAM DIMMs are properly installed on the line card, reinstall the line card in its original card cage slot.
To reinstall a line card, perform the following steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Grasp the faceplate of the line card with one hand and place your other hand under the card carrier to support the card's weight while aligning the card with the card cage slot.
Step 3 Gently insert the card into the slot until the card ejector levers make contact with the lip of the card cage.
Step 4 Grasp the card ejector levers at the top and bottom of the line card faceplate and pivot them inward until they are perpendicular to the faceplate. This action firmly seats the card in the backplane.
Step 5 Tighten the captive screw at each end of the line card faceplate.
Step 6 Replace the line card cable-management bracket:
(a) Position the bracket on the line card faceplate.
(b) Insert and tighten the two captive screws at each end of the line card cable-management bracket to secure it to the line card.
Step 7 Reconnect the network interface cables to their original ports on the line card faceplate.
Proceed to the next section to check the installation of line card memory.
After you install line card memory and reinstall the line card in the router, the router reinitializes the line card and detects the memory change as part of the reinitialization cycle. The time required for the router to initialize may vary with different router configurations and memory configurations. A router with larger DRAM DIMMs, for example, might take longer to boot.
If the line card does not reinitialize properly after upgrading DRAM or SDRAM on the line card, or if the console terminal displays a checksum or memory error, verify that you have installed the correct DRAM or SDRAM DIMMs and that they are installed correctly on the line card.
Follow these steps:
Step 1 Remove the line card from the card cage as described in the "Removing a Line Card from the Router" section.
Step 2 Check the packet buffer memory SDRAM DIMMs to verify that both DIMMs are the same size and speed.
If you have upgraded line card packet buffer memory, both DIMM sockets of a given pair of transmit (Tx) or receive (Rx) buffers must contain SDRAM DIMMs of the same size and speed; otherwise, the router will not operate properly. SDRAM DIMMs must operate at 60 ns or faster. The speed of the DIMM is printed along one of its edges.
Step 3 Check the alignment of the DRAM and SDRAM DIMMs by looking at them across the horizontal plane of the card. The DIMMs should be aligned at the same angle and be fully inserted into their respective sockets.
If a DIMM is not correctly aligned, remove it and reinsert it.
Step 4 Reinstall the line card in the card cage as described earlier in this document and perform another installation check.
If the router fails to restart properly after several attempts and you are unable to resolve the problem, contact your Cisco service representative for assistance. Before calling, however, make note of any console error messages, unusual LED states, or other router indications or behaviors that might help to resolve the problem.
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Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.
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If you are a network administrator and need personal technical assistance with a Cisco product that is under warranty or covered by a maintenance contract, contact Cisco's Technical Assistance Center (TAC) at 800 553-2447, 408 526-7209, or tac@cisco.com. To obtain general information about Cisco Systems, Cisco products, or upgrades, contact 800 553-6387, 408 526-7208, or cs-rep@cisco.com.
Posted: Tue Jun 20 13:45:32 PDT 2000
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