Table of Contents

Gigabit Ethernet Interface Processor (GEIP) Installation and Configuration

Product Numbers: GEIP(=), GBIC-SX=, GBIC-LX=, GBIC-LH=, CAB-GELX-625=

Introduction

This configuration note is a standalone publication that provides instructions for installing and configuring the Gigabit Ethernet Interface Processor (GEIP). The GEIP operates in all Cisco 7500 series routers and in Cisco 7000 series routers using the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI). (For specific compatibility requirements, see the "Software and Hardware Requirements" section.) Included in this configuration note are steps for GEIP hardware installation and cable connection, and basic GEIP configuration steps and examples.

Contents

This configuration note includes the following sections:

Related Documentation

Your router and the Cisco IOS software running on it contain extensive features and functionality. For information on Cisco IOS software and for general installation and maintenance information for your router, use the following resources:

Note You can access Cisco IOS software documentation and hardware installation and maintenance documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, http://www-europe.cisco.com.

If you are reading Cisco documentation on the World Wide Web, you can submit comments electronically. Click Feedback on the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.

Installation Prerequisites

This section provides installation prerequisites to ensure a successful GEIP installation, and includes the following sections:

If you plan to install a new GEIP and, therefore, prepare your site and plan network connections, be sure to review the Gigabit Ethernet descriptions and interface cable distance limitations in the "IEEE 802.3z Gigabit Ethernet Overview" section.

Software and Hardware Requirements

The GEIP operates with the CyBus in Cisco 7500 series routers and requires that the host router run Cisco IOS Release 11.1(22)CC or a later release of 11.1 CC.

The GEIP operates with the CxBus in Cisco 7000 series routers and requires that the host router run Cisco IOS Release 11.1(22)CC or a later release of 11.1 CC.

Caution To prevent problems associated with data transmission, you must attach this device only to IEEE 802.3x-compliant devices.

Tools and Parts Required

You need the following tools and parts to install or upgrade a GEIP:

The mode conditioning patch cord is available from Cisco Systems as Product Number CAB-GELX-625= and is recommended for 62.5/125-micron (m)¹ multimode optical fiber, 1000Base-LX applications where transmission distances are greater than 984.25 feet (300 meters).

If you need additional equipment, contact a service representative for ordering information.

Safety Guidelines

Following are safety guidelines that you should follow when working with any equipment that connects to electrical power or telephone wiring.

Safety Warnings

Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement.

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, see 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 onnttouuksien 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.

Electrical Equipment Guidelines

Follow these basic guidelines when working with any electrical equipment:

Telephone Wiring Guidelines

Use the following guidelines when working with any equipment that is connected to telephone wiring or to other network cabling:

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are improperly handled, results in complete or intermittent failures.

Use the following guidelines for preventing ESD damage:

Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms (Mohms).

Guidelines for Interface Processor Installation and Removal

This section describes mechanical functions of system components, emphasizes the importance of following correct procedures to avoid unnecessary board failures, and is for background only; specific installation procedures follow in the "GEIP Installation" section.

You can remove and replace interface processors while the system is operating; you do not need to notify the software or reset the system power. This functionality enables you to add, remove, or replace interface processors with the system online, which provides a method that is seamless to end users on the network, maintains all routing information, and ensures session preservation.

After an interface processor is reinstalled, the system brings on line only interfaces that match the current configuration and were previously configured as up; all others require that you configure them with the configure command.

Caution The system can indicate a hardware failure if you do not follow proper procedures. We strongly recommend that you remove or insert only one interface processor at a time. You must allow at least 20 to 30 seconds for the system to complete the preceding tasks before removing or inserting another interface processor. Disrupting the sequence before the system completes its verification can cause the system to interpret hardware failures.

Cisco 7000 series and Cisco 7500 series routers have ejector levers located on the ends of the interface processor slots. (See Figure 1a.) The function of the ejector levers is to align and seat the card connectors in the backplane. Failure to use the ejector levers and insert the interface processor properly can disrupt the order in which the pins make contact with the card or interface processor. Follow the GEIP installation and removal instructions carefully, and review the following examples of incorrect insertion practices and their results:

Use the ejector levers when removing an interface processor to ensure that the backplane connector pins disconnect from the interface processor in the sequence expected by the system. Any interface processor that is only partially connected to the backplane can hang the bus. Steps for correctly performing online insertion and removal are included with the following procedures for installing and removing the GEIP.

IEEE 802.3z Gigabit Ethernet Overview

This section provides an overview of IEEE 802.3z and Gigabit Ethernet. The term Ethernet is commonly used for all local-area networks (LANs) that generally conform to Ethernet specifications, including Gigabit Ethernet under IEEE 802.3z, which is well suited to applications where a local communication medium must carry sporadic, occasionally heavy traffic at high peak data rates.

The IEEE 802.3z specification includes the following three physical layer protocols:

Note Cisco Systems offers another version of 1000Base-LX called Long Haul (LH), which complies with IEEE 802.3z 1000Base-LX but extends the transmission distance up to 6.21 miles (10 km). The GEIP provides connection options for 1000Base-SX, 1000Base-LX, and Long Haul.

The GEIP does not support the 1000Base-CX physical layer protocol.

Each physical layer protocol has a name that summarizes its characteristics in the format speed/signaling method/segment length, where speed is the LAN speed in megabits per second (Mbps), signaling method is the signaling method used (either baseband or broadband), and segment length is typically the maximum length between stations in hundreds of meters. For example, 1000Base-SX specifies a 1000-Mbps, baseband LAN, with maximum network segments (operating distances) as defined in Table 1. Table 2 and Table 3 define maximum network segments for 1000Base-LX and Long Haul, respectively.

GEIP Link Distance Limitations

The GEIP uses two types of optical fiber: single-mode and multimode. Modes can be thought of as bundles of light rays entering the fiber at a particular angle. Single-mode fiber allows only one mode of light to propagate through the fiber, whereas multimode fiber allows multiple modes of light to propagate through the fiber.

Multiple modes of light propagating through the fiber travel different distances depending on the entry angles, which cause them to arrive at the destination at different times (a phenomenon called modal dispersion); therefore, single-mode fiber is capable of higher bandwidth and greater cable run distances than multimode fiber.

According to IEEE 802.3z, power budget is defined as the minimum optical power available to overcome the sum of attenuation plus power penalties of the optical path between the transmitter and receiver calculated as the difference between the transmitter launch power (minimum) and the receiver power (minimum). Further, channel insertion loss is defined as the static loss of a link between a transmitter and a receiver. It includes the loss of the fiber, connectors, and splices, and is used to calculate link distance.
Finally, for fiber-optic links, the power penalties of a link are not attributes of link attenuation. Power penalties include modal noise, relative intensity noise (RIN), intersymbol interference (ISI), mode partition noise, extinction ratio, and eye-opening penalties.

The following tables list typical maximum distances for single-mode and multimode transmission with 1000Base-SX (Table 1), 1000Base-LX (Table 2), and LH (Table 3). Table 4 lists optical fiber cable requirements.

Table 1   Worst-Case 1000Base-SX Link Power Budget and Penalties

Table 2   Worst-Case 1000Base-LX Link Power Budget and Penalties

Table 3   Worst-Case Long Haul Link Power Budget and Penalties

Table 4   Optical Fiber and Cable Characteristics

Table 5   Minimum and Maximum Transmit and Receive Power

by Transmission and Optical Fiber Types

Evaluating the Power Budget

To design an efficient optical data link, you should evaluate the power budget. Proper operation of an optical data link depends on modulated light reaching the receiver with enough power to be correctly demodulated. Data link efficiency is effected by the losses introduced by splices and connectors.

The maximum operating distance listed in Tables 1, 2, and 3 is an estimate and is based on the following assumptions:

Therefore, for a real network, you could adjust the operating distance as follows:

You should note that exceeding the maximum operating distance is only feasible with single-mode optical fiber, not with multimode optical fiber because the penalty of the differential mode delay (DMD) of a laser source over multimode fiber. We strongly recommend that you follow operating distance guidelines.

Multimode Power Margin Example with Sufficient Power for Transmission

Power margin (PM) is defined as channel insertion loss or cable loss (connector loss + splice loss). The result should be greater than or equal to 0 and is expressed in decibels (dB).

The following is an example of a power margin (PM) calculation for a 1000Base-SX GEIP over multimode optical fiber, and based on the following variables:

Estimate the multimode power margin as follows:

From Table 1, the channel insertion loss is 2.60 dB, so

PM = 2.60 dB - 250 m (3.75 dB/km) - 2 (0.5 dB) - 1 (0.5 dB)

PM = 2.60 dB - 0.94 dB - 1 dB - 0.5 dB

PM = 0.16 dB

The positive value 0.16 dB indicates that this link has sufficient power for transmission.

Single-Mode Power Margin Example with Sufficient Power for Transmission

The following example of PM for a Long-Haul GEIP over a single-mode optical fiber is based on two buildings, 5 kilometers apart (with a loss of 0.5 dB/km; see Table 4), connected through a patch panel in an intervening building with a total of 10 connectors (each with a loss of 0.5 dB).

Estimate the single-mode power margin as follows:

From Table 3, the channel insertion loss is 7.8 dB, so

PM = 7.8 dB - 5 km (0.5 dB/km) - 10 (0.5 dB)

PM = 7.8 dB - 2.5 dB - 5 dB

PM = 0.3 dB

The positive value of 0.3 dB indicates that this link has sufficient power for transmission.

Using Statistics to Estimate the Power Budget

Statistical models more accurately determine the power budget than the worst-case method. Determining the link loss with statistical methods requires accurate knowledge of variations in the data link components. Statistical power budget analysis is beyond the scope of this publication. For further information, refer to ITU-T standards and your equipment specifications.

Additional Power Budget and Attenuation References

The following publications contain information on determining attenuation and power budget:

Product Description

This section provides information about the GEIP and includes the following sections:

The GEIP (see Figure 2 and Figure 3) is a single-port, fixed-configuration interface processor that, when combined with the appropriate optical fiber cable, provides one 1000-Mbps, IEEE 802.3z-compliant Gigabit Ethernet (GE) interface. The GE interface on a GEIP operates in full-duplex mode at 1000 Mbps in each direction—transmit (TX) and receive (RX).

The GEIP supports the following features:

Note IEEE 802.1Q frames are available only with Cisco IOS Release 12.0(3)T or a later release of 12.0 T.

The synchronous dynamic random access memory (SDRAM) configurations for the GEIP are 32 to 128 megabytes (MB), and the static random access memory (SRAM) configurations for the GEIP are 4 to 8 MB. You can install a GEIP in any available interface processor slots in a Cisco 7000 series or Cisco 7500 series router. (For additional hardware requirements associated with Cisco 7000 series routers, see the "Software and Hardware Requirements" section.)

Caution To prevent system problems, we recommend that you not attempt to replace or remove a GE interface, or otherwise attempt to disassemble a GEIP. The entire GEIP assembly must be treated as a field-replaceable unit (FRU).

GEIP LEDs

The GE interface contains the enabled LED and a bank of three status LEDs for the GE interface and the GEIP LEDs. After system initialization, the enabled LED goes on to indicate that the GEIP has been enabled for operation. (The LEDs are shown in Figure 4.)

The following conditions must be met before the enabled LED goes on:

If any of these conditions is not met, or if the initialization fails for other reasons, the enabled LED does not go on.

Following are the three status LEDs and an explanation of what each indicates:

Gigabit Interface Converter

This section provides information about the Gigabit Ethernet Converter (GBIC) (see Figure 5), which is installed between your GEIP and your 1000Base-X-based network.

Caution To prevent system problems, do not use GBICs from third-party vendors. Use only the GBIC that shipped with your GEIP.

The 1000Base-SX (GBIC-SX), 1000Base-LX (GBIC-LX), and Long-Haul (GBIC-LH) GBICs have one optical interface in the form of an SC-type duplex receptacle, which supports IEEE 802.3z interfaces compliant with the 1000Base-X standard. (See Figure 5.)

Depending on the GBIC you plan to use, it contains either a Class-1 laser of 850 nm for 1000Base-SX (short-wavelength) applications, a Class-1 laser of 1300 nm for 1000Base-LX (long-wavelength) applications, or a Class-1 laser of 1300 nm for Long-Haul (long-wavelength) applications.

Warning Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to laser radiation and do not stare into open apertures.

Warning Class 1 laser product.

Optical Fiber Cables

This section provides information about the optical fiber cables you should use with the GEIP.

Figure 6 and Figure 7 show the simplex and duplex SC-type connectors on your multimode or single-mode optical fiber cables. For simplex connections, one cable is required for transmit (TX) and a second cable is required for receive (RX). For duplex connections, one duplex connection is required for TX and RX. You can use either simplex or duplex connections for the GEIP.
(Optical fiber cables are commercially available; they are not available from Cisco Systems.)

Warning Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to laser radiation and do not stare into open apertures.

Warning Class 1 laser product.

The optical fiber cables you can use with the GBIC on a GEIP are as follows:

Mode Conditioning Patch Cord with a Multimode GBIC-LX and GBIC-LH

The GBIC-LX option for the GEIP has a 1300-nm (long-wavelength) Class 1 laser as a light source and provides a connection to 50/125-m or 62.5-m multimode optical fiber.

The GBIC-LH option for the GEIP has a 1300-nm (long-wavelength) Class 1 laser as a light source and provides a connection to 50/125-m or 62.5-m multimode optical fiber.

When an unconditioned laser source designed for operation on single-mode optical fiber is directly coupled to a multimode optical fiber cable, an effect known as differential mode delay (DMD) might result in a degradation of the modal bandwidth of the optical fiber cable.

This degradation results in a decrease in the link span (the distance between a transmitter and a receiver) that can be supported reliably. The effect of DMD can be overcome by conditioning the launch characteristics of a laser source. A practical means of performing this conditioning is to use a device called a mode conditioning patch cord.

A mode conditioning patch cord is an optical fiber cable assembly that consists of a pair of optical fibers terminated with connector hardware. Figure 8 shows a diagram of the mode conditioning patch cord assembly. Specifically, the mode conditioning patch cord is composed of a single-mode optical fiber permanently coupled off center to a graded-index multimode optical fiber. (See Offset in Figure 8.)

The mode conditioning patch cord assembly is composed of duplex optical fibers, including a single-mode-to-multimode offset launch fiber connected to the transmitter, and a second conventional graded-index multimode optical fiber connected to the receiver. The use of a plug-to-plug patch cord maximizes the power budget of multimode 1000Base-LX and LH links.

Caution To prevent data transmission problems, you must use a mode conditioning patch cord whenever you connect 1000Base-LX (1300-nm) or Long-Haul GE interfaces through 50/125-m or 62.5/125-m multimode optical fiber at distances greater than 984.25 feet (300 meters).

A typical application of a mode conditioning patch cord is shown in Figure 9.

Agency Approvals

The GEIP is designed to comply with and meet the following agency approvals:

GEIP Installation

The following sections describe the procedures for removing or installing a GEIP in the Cisco 7000 series or Cisco 7500 series routers:

GEIP installation functionality is the same for each router model; therefore, the term the router is used except where specific model issues arise. The online insertion and removal function allows you to install and remove a GEIP without first shutting down the system; however, you must follow the instructions carefully. Failure to insert the GEIP properly can cause system error messages indicating a board failure.

For a complete description of recommended guidelines for interface processor installation and removal, see the "Guidelines for Interface Processor Installation and Removal" section. Handle interface processors as shown in Figure 10.

Each unused interface processor slot must contain an interface processor filler (which is an interface processor carrier without a printed circuit board) to keep dust out of the router and to maintain proper airflow through the interface processor compartment. If you plan to replace a GEIP or if you plan to install a new GEIP that is not a replacement—and you must first remove the interface processor filler from an unused slot—proceed to the next section, "Removing a GEIP."

Removing a GEIP

This section describes the procedure for removing a GEIP, an interface processor, or an interface processor filler, and replacing them with a new GEIP.

You do not need to shut down the interface or the system power when removing a GEIP or other interface processor. To help prevent dust and contaminants from entering the router and to prevent electromagnetic interference (EMI), do not leave the interface processor slot open. To prevent ESD damage, use an ESD-preventive wrist strap.

If you do not have a Cisco 7507 or Cisco 7513 with the HSA feature active and an RSP2 configured as the system slave, perform only Step 3 in the following procedure.

If you have a Cisco 7507 or a Cisco 7513 with the HSA feature active and an RSP2 configured as the system slave, we strongly recommend that you perform all the steps in the following procedure:

Step 2   Wait 20 to 30 seconds.

Step 3   Remove the appropriate GEIP or interface processor and then replace it with your new GEIP.

Caution Always use the ejector levers to remove a GEIP or interface processor. Failure to do so can cause erroneous system error messages indicating a board failure.

If you removed a GEIP or interface processor and the interface processor slot is to remain empty, install an interface processor filler (Product Number MAS7K-BLANK) to keep dust out of the router and to maintain proper air flow inside the router. Do not leave the interface processor slot open.

Note If you do not have a Cisco 7507 or Cisco 7513 with the HSA feature active and an RSP2 configured as the system slave, immediately proceed to the section "Installing a GEIP"; otherwise, proceed to step 4.

Step 4   Wait 20 to 30 seconds.

Step 5   Reinsert the slave RSP2.

This completes the procedure for removing a GEIP or interface processor from your Cisco 7000 series or Cisco 7500 series router. Proceed to the section "Installing a GEIP."

Installing a GEIP

This section describes the procedure for installing a GEIP. The GEIP slides into an open interface processor slot and connects directly to the backplane. The interface processors are keyed to guide pins on the backplane, so the GEIP can be installed only in an interface processor slot.

Figure 1 shows the functional details of inserting an interface processor and using the ejector levers. Figure 10 shows proper handling of an interface processor during installation.

Caution Remove or insert only one interface processor at a time. Allow at least 20 to 30 seconds for the system to complete its discovery and initialization before removing or inserting another interface processor. Disrupting the sequence before the system has completed verification can cause the system to interpret hardware failures.

Use the following procedure to install a new GEIP:

Step 2   Hold the GEIP handle with one hand and place your other hand under the carrier to support the GEIP and guide it into the slot. (See Figure 10.) Avoid touching the card or any connector pins.

Caution To prevent ESD damage, handle interface processors by the handles and carrier edges only.

Step 3   Place the back of the GEIP in the slot and align the notch on the carrier with the groove in the slot. (See Figure 1 on page 8.)

Step 4   While keeping the GEIP parallel to the backplane, carefully slide it into the slot until the back of the faceplate makes contact with the ejector levers, and then stop. (See Figure 1b
on page 8.)

Caution Always use the ejector levers when installing or removing interface processors. An interface processor that is partially seated in the backplane might cause the system to hang and subsequently crash, and shoving or slamming the interface processor into the slot can damage the backplane pins and board.

Step 5   Using your thumbs, simultaneously push both ejector levers inward until the GEIP is pushed entirely into its slot. (See Figure 1c on page 8.)

Step 6   Tighten both of the captive installation screws.

Caution To ensure proper electromagnetic interference (EMI) isolation for the router, make certain to tighten the captive installation screws on each GEIP immediately after you install it and before proceeding with the installation of each remaining GEIP or other interface processor.

This completes the procedure for installing a GEIP in a Cisco 7000 series or Cisco 7500 series router.

Attaching Cables to the GEIP

The two cabling options for the GEIP are discussed in the following sections:

This cabling option is for the following connections:

(For specific information about multimode and single-mode optical fiber cables, refer Table 4 and the "Optical Fiber Cables" section.)

This cabling option is for a GEIP with a GBIC-LX or a GBIC-LH, where you expect transmission distances to be greater than 984.25 feet (300 meters) over 50/125-m or 62./125-m multimode fiber. (For specific information about the mode conditioning patch cord, see the "Mode Conditioning Patch Cord with a Multimode GBIC-LX and GBIC-LH" section.)

Caution To prevent transmission problems, do not use the mode conditioning patch cord with 9/125- or 10/125-m single-mode optical fiber under any circumstances.

Attaching Multimode and Single-Mode Optical Fiber Cables to a GBIC

This section provides the cable-attachment procedure for the following connections:

Caution If you plan to use a GBIC-LX or a GBIC-LH in your GEIP at distances greater than 984.25 feet (300 meters) over 50/125-m or 62./125-m multimode fiber, to prevent data transmission problems you must use the mode conditioning patch cord. Do not use the procedure in this section. Instead, proceed to the "Attaching a Mode Conditioning Patch Cord to a GBIC-LX" section.

Use the following procedure to attach multimode or single-mode optical fiber cables to your GBIC:

Caution To prevent transmission problems, ensure that you connect the TX and RX ports on one end of the optical fiber cable to the RX and TX ports (respectively) on the other end. In other words, connect TX to RX and RX to TX.

Warning Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to laser radiation and do not stare into open apertures.

Warning Class 1 laser product.

Step 2   Attach the network ends of your optical fiber cables to the 1000Base-X equipment in your cable plant.

This completes the procedure for attaching optical fiber cable to your GBIC.

Attaching a Mode Conditioning Patch Cord to a GBIC-LX

This section describes the procedure for attaching a mode conditioning patch cord to your GBIC-LX or GBIC-LH, where you expect transmission distances to be greater than 984.25 feet (300 meters) over 50/125-m or 62./125-m multimode fiber. (For specific information about the mode conditioning patch cord, see the "Mode Conditioning Patch Cord with a Multimode GBIC-LX and GBIC-LH" section.)

The network end of the GBIC has a duplex SC-type receptacle. You must attach the mode conditioning patch cord to the SC-type receptacle on your GBIC.

Use the following procedure to attach the mode conditioning patch cord to your GBIC:

Caution To prevent transmission problems, ensure that you connect the TX and RX ports on one end of the patch cord to the RX and TX ports (respectively) on the other end. In other words, connect TX to RX and RX to TX.

Warning Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to laser radiation and do not stare into open apertures.

Warning Class 1 laser product.

Step 2   Attach the network ends of your mode conditioning patch cord to the appropriate 1000Base-X equipment in your building cable plant. (See Figure 12.)

This completes the procedure for attaching a mode conditioning patch cord to your GBIC.

Using LEDs to Check GEIP Status

The GEIP has four status LEDs on its faceplate that indicate status on the GEIP and its GE interface. (See Figure 13.)

Observe the LED states and the console display as the router initializes. When the system has reinitialized all interfaces, the enabled LED on the GEIP should go on. (For complete descriptions of the GEIP LEDs, see the "GEIP LEDs" section.)

The console screen also displays a message as the system discovers each interface during its reinitialization. After system initialization, the enabled LED goes on to indicate that the GEIP is enabled for operation.

Use the following procedure to verify that the GEIP is connected correctly:

Step 2   When the reinitialization is complete, verify that the enabled LED on the GEIP is on and remains on. If the LED does stay on, proceed to Step 5. If the enabled LED does not stay on, proceed to the next step.

Step 3   If an enabled LED fails to go on, suspect that the GEIP board connector is not fully seated in the backplane. Loosen the captive installation screws and then firmly push the top (or left) ejector lever down while pushing the bottom (or right) ejector lever up until both are parallel to the GEIP faceplate. Tighten the captive installation screws. After the system reinitializes the interfaces, the enabled LED on the GEIP should go on.

If the enabled LED goes on, proceed to Step 5.

If the enabled LED does not go on, proceed to the next step.

Step 4   If an enabled LED still fails to go on, remove the GEIP and try installing it in another available interface processor slot.

If the enabled LED goes on when the GEIP is installed in the new slot, suspect a failed backplane port in the original interface processor slot.

If the enabled LED still fails to go on, but other LEDs on the GEIP go on to indicate activity, proceed to Step 5 to resume the installation checkout and suspect that the enabled LED on the GEIP has failed.

If no LEDs on the GEIP go on, suspect that the GEIP is faulty. Do not proceed with the installation. Contact a service representative to report the faulty equipment and obtain further instructions.

Step 5   Use the show interfaces command to verify the status of the GEIP interface. (If the interface is not configured, you must configure it using the procedure in the section "Configuring the GEIP.")

If an error message appears on the console terminal, refer to the appropriate reference publication for error message definitions. If you experience other problems that you are unable to solve, contact a service representative for assistance.

Configuring the GEIP

If you installed a new GEIP or if you want to change the configuration of an existing GE interface, you must enter configuration mode using the configuration command. If you replaced an interface that was previously configured, the system recognizes the new interface and brings it up in its existing configuration.

After you verify that the new GEIP is installed correctly (the enabled LED goes on), use the privileged-level configure command to configure the new interfaces. Be prepared with the information you need, such as the following:

For a summary of the configuration options available and instructions for configuring the GE interface on the GEIP, refer to the appropriate configuration publications listed in the "Related Documentation" section.

The configure command requires privileged-level access to the EXEC command interpreter, which usually requires a password. Contact your system administrator if necessary to obtain EXEC-level access.

Identifying Interface Addresses

This section describes how to identify GE interface addresses.

In the router, interface addresses specify the actual physical location of each interface port on the router interface processor end. This address is composed of a three-part number in the format interface-processor-slot-number/port-adapter-slot-number/interface-port-number.

The interface on the GEIP maintains the same address regardless of whether other interface processors are installed or removed. However, when you move a GEIP to a different interface processor slot, the first number in the address changes to reflect the new interface processor slot number.

For example, on the GEIP in interface processor slot 3, the address of the GE interface is 3/0/0. If you remove the GEIP from slot 3 and install it in interface processor slot 2, the address of the GE interface becomes 2/0/0.

You can also identify interface ports by physically checking the interface processor slot number and interface port location on the back of the router or by using software commands to display information about a specific interface or all interfaces in the router.

Configuring the GE Interface

This section describes a basic configuration. Press Return after each step unless otherwise noted. At any time you can exit the privileged level and return to the user level by entering disable at the prompt as follows:

Use the following procedure to perform a basic configuration:

Step 2   At the prompt, specify the first interface to configure by entering the subcommand interface, followed by the type (gigabitethernet) and interface-processor-slot-number/port-adapter-slot-number/interface-port-number.
The example that follows is for the GE interface port on a GEIP in interface processor slot 1:

Step 3   If IP routing is enabled on the system, you can assign an IP address and subnet mask to the interface with the ip address configuration subcommand, as in the following example:

Step 4   Add any additional configuration subcommands required to enable routing protocols and set the interface characteristics for your configuration requirements.

Note Full-duplex operation is the default for the GEIP. Half-duplex operation is not supported.

Step 5   Change the shutdown state to up and enable the interface as follows:

Step 6   When you have included all the configuration subcommands to complete the configuration, press Ctrl-Z to exit configuration mode.

Step 7   Write the new configuration to nonvolatile memory as follows:

After configuring the new GE interface, use show commands to display the status of the new interface or all interfaces, or to verify changes you have made. (For descriptions of show commands, see the "Checking the Configuration" section.)

Checking the Configuration

After configuring the new interface, use the show commands to display the status of the new interface or all interfaces and the ping command to check connectivity.

Using show Commands to Verify the GEIP Status