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Product Numbers: 3GE-GBIC-SC(=)
This publication contains instructions for installing and configuring the 3-Port Gigabit Ethernet line card on a Cisco 12000 series Gigabit Switch Router.
The following sections are included in this configuration note:
This section contains important information about additional documentation, Cisco IOS software configuration, safety, and technical support. This section also describes important operating considerations for your line card.
The Cisco Documentation CD-ROM package provides comprehensive documentation on the entire Cisco product line. The CD-ROM package contains documents in both Adobe portable document format (PDF), viewable with Adobe Acrobat Reader, and hypertext markup language (HTML) files, viewable with a Web browser.
The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly; therefore, it might be more up to date than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription.
For hardware installation and maintenance information on the Cisco 12000 series routers, refer to the installation and configuration guide that shipped with your Cisco 12000 series router.
Also refer to the field-replaceable unit (FRU) publications that describe how to install, maintain, and replace router subsystems, such as cooling fans, power supplies, chassis backplanes, and so on.
The Cisco IOS software that runs on your router contains extensive features and functionality.
For Cisco IOS software configuration information and support, refer to the configuration and command reference publications in the Cisco IOS software configuration documentation set that corresponds to the Cisco IOS software release installed on your Cisco hardware. You can also refer to the Cisco IOS software release notes for the version of Cisco IOS software you are using on your router.
Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Refer to "Cisco Connection Online," at the end of this publication, for complete information on how to obtain support through CCO.
You can also contact Cisco Customer Service at 800 553-6387 or 408 526-7208 (U.S.). Customer Service hours are 5:00 a.m. to 6:00 p.m. Pacific time, Monday through Friday (excluding company holidays). You can also send e-mail to cs-rep@cisco.com.
You may also find useful information in the Cisco Information Packet that shipped with your router.
The following operating considerations apply to the 3-Port Gigabit Ethernet line card:
Before you begin the procedures in this publication, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment.
For information on regulatory compliance and safety, refer to the Regulatory Compliance and Safety Information publication that shipped with your device. This publication contains important safety information that you must read and understand before attempting to install, remove, or modify any hardware in your Cisco 12000 series router.
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement. The following paragraph is an example of a safety warning. It identifies the warning symbol and associates it with a bodily injury hazard. The remaining paragraphs in this section are translations of the initial safety warning.
![]() | 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.
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are improperly handled, results in complete or intermittent failures. The 3-Port Gigabit Ethernet line card consists of a printed circuit card that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps to protect the board from ESD, use a preventive ESD strap whenever you are handling a line card.
Following are guidelines for preventing ESD damage:
![]() | Caution For safety, periodically check the resistance value of the ESD strap. The measurement should be between 1 and 10 megohms. |
The Cisco 12000 series Gigabit Switch Routers provide high-speed, high-volume routing of packets and ATM cells. The Cisco 12000 series includes the following platforms, all sharing a similar architecture:
The GSR architecture offers the following features and capabilities in providing support to IP-based local-area networks (LANs) and wide-area networks (WANs):
In addition, the system allows for redundant, field-replaceable units (FRUs).
The 3-Port Gigabit Ethernet line card provides Cisco 12000 series routers with three optical Gigabit Ethernet interfaces, which operate faster than 1-Gbps, on a single card. These interfaces are designed to operate as trunks between GSR 12000 series routers and other routers or layer-2 switches. These connections are concatenated, which provides for increased efficiency by eliminating the need to partition the bandwidth. The 3-Port Gigabit Ethernet Line card will provide two ports at full line rate provided the third port is shutdown. With all three ports turned on, the 3-Port Gigabit Ethernet line card will balance the load across all three ports up to the card's packet-forwarding limitation of 4 million packets.
Figure 1 provides front- and rear-view illustrations of the 3-Port GigaBit Ethernet line card.

The Gigabit Ethernet Interface Connectors (GBICs) are field-replaceable modules, which plug into the line card and provide the Gigabit Ethernet optical interfaces. There are three GBIC module options available for the 3-Port Gigabit Ethernet line card:
All three GBIC module types have SC connectors. Different GBICs can be ordered for each port on the line card. Table 1 describes the operating parameters for available GBIC laser optics.
| GBIC | Type | Wavelength | Cable | Distance |
|---|---|---|---|---|
GBIX-SX-MM(=) | Shortwave (multimode shorthaul) | 850nm | MMF 62.5 micron | 260 meters |
MMF 50 micron | 550 meters | |||
GBIC-LH-SM(=) | Longwave (single-mode longhaul) | 1300nm | MMF 62.5 micron | 440 meters |
MMF 50 micron | 550 meters | |||
SMF 10/9 micron | 10,000 meters | |||
GBIC-ZX-SM(=) Extended distance (single-mode) | 1550nm | SMF 10/9 micron | 70,000 meters | |
| ||||
This section provides information to help you prepare to install and configure a 3-Port Gigabit Ethernet line card. The following sections describe prerequisites and preparation information:
This section also contains safety and ESD-prevention guidelines to help you avoid injuring yourself or damaging the equipment.
We recommend that you do the following before beginning any of the procedures in this document:
You need the following tools and parts to remove and replace a Cisco 12000 series line card. If you need additional equipment, contact your Cisco service representative for ordering information.
The 3-Port Gigabit Ethernet line card is compatible with any Cisco 12000 series router that is operating with the following system software: Cisco IOS Release 12.0(11)S or later Cisco IOS 12.0S release.
The show version, show diag, and show hardware commands display the current hardware configuration of the router, including the system software version that is currently loaded and running. For complete descriptions of show commands, refer to the Configuration Fundamentals Configuration Guide and Configuration Fundamentals Command Reference publications, which are available on the Documentation CD-ROM or as printed copies.
In the following example of the show version command, the running system software, Release 12.0, is displayed in italics.
Router> show version gsr-1#show version Cisco Internetwork Operating System Software IOS (tm) GS Software (GSR-P-M), Experimental Version 12.0(20000208:113405) [shu] Copyright (c) 1986-2000 by cisco Systems, Inc. Compiled Thu 16-Mar-00 10:18 by xxxxxx Image text-base: 0x60010908, data-base: 0x615DE000 (remainder of displayed text omitted from example)
The show diag command provides other information about the line card, such as the line card's name and the L3 Engine, both shown in italics in the following example:
router# show diag 5
SLOT 5 (RP/LC 5 ): 3 Port Gigabit Ethernet
MAIN: type 68, 800-6376-01 rev AO dev 0
HW config: 0x00 SW key: FF-FF-FF
PCA: 73-4775-02 rev AO ver 1
HW version 1.0 S/N
MBUS: Embedded Agent
Test hist: 0xFF RMA#: FF-FF-FF RMA hist: 0xFF
DIAG: Test count: 0xFFFFFFFF Test results: 0xFFFFFFFF
L3 Engine: 2 - Backbone OC48 (2.5 Gbps)
MBUS Agent Software version 01.40 (RAM) (ROM version is 02.00)
Using CAN Bus A
ROM Monitor version 10.04
Fabric Downloader version used 03.03 (ROM version is 03.03)
Primary clock is CSC 1
Board is analyzed
Board State is Line Card Enabled (IOS RUN )
Insertion time: 00:00:11 (20:47:24 ago)
DRAM size: 134217728 bytes
FrFab SDRAM size: 134217728 bytes, SDRAM pagesize: 8192 bytes
ToFab SDRAM size: 134217728 bytes, SDRAM pagesize: 8192 bytes
0 crashes since restart
If the displays indicate that the running system software is a version earlier than Release 12.0(11)S, check the contents of Flash memory to determine if the required images are available on your system. The show flash command displays a list of all files stored in Flash memory. If you do not have the correct software version, contact Cisco customer service.
To ensure compatibility with the software, your 3-Port Gigabit Ethernet line card should have a hardware revision level of 73-4775-02 Rev A0 or greater. (Released hardware is designated A0 or greater.) The hardware revision number is printed on a label affixed to the component side of the card. You can also display the hardware revision number by using the show diag and show hardware commands.
Fiber-optic transmission specifications identify two types of fiber: single-mode and multimode. Signals can travel farther through single-mode fiber than through multimode fiber. The 3-Port Gigabit Ethernet line card supports multimode fiber optics in the GBIC-SX-MM(=) module and single-mode fiber optics in the GBIC-LH-SM(=) and GBIC-ZX-SM(=) modules.
The maximum distance for single-mode installations is determined by the amount of light loss in the fiber path. Good quality single-mode fiber with very few splices can carry a Gigabit Ethernet short-reach signal 3 km or more. If your environment requires the signal to travel close to the typical maximum distance (as listed in Table 2), you should use an optical time domain reflectometer (OTDR) to measure the power loss.
| GBIC | Transceiver | Power Budget | Transmit Power | Receive Power | Typical Maximum Distance |
|---|---|---|---|---|---|
GBIC-SX-MM | Multimode, | 7.5 dB | -17 to 0 dBm | 550 meters | |
GBIC-LH-SM | single-mode, long haul | 10.5 dB | -10 to -3 dBm | -18 to 0 dBm | 10,000 meters |
GBIC-ZX-SM | single-mode, extended distance | 21 dB | -2dBm | -23dBm | 70,000 to 100,0003 meters |
| 1dBm = decibels referenced to 1 milliwatt 2nm = nanometer 3Dispersion-shifted single-mode fiber-optic cable required for 100,000 meter distance |
The 3-Port Gigabit Ethernet line card is available with the memory options described in Table 3 and Table 4. Refer to the publication Cisco 12000 Series Gigabit Switch Router Memory Replacement Instructions for installation procedures if you are upgrading or replacing line card memory.
| Product Option | Description |
|---|---|
MEM-DFT-GRP/LC-64 | 64 MB (default) |
MEM-GRP/LC-128 | 128 MB (orderable upgrade) |
MEM-GRP/LC-256 | 256 MB (orderable upgrade) |
| Product Option | Description |
|---|---|
MEM-DFT-PKT-256 | 256 MB (default) |
MEM-PKT-5120-UPG | 512 MB (orderable upgrade) |
This section describes the line card slot locations in the following Cisco 12000 series routers:
Before installing your line card into the router, verify that a line card slot is available.
Figure 2 shows the location of the line card slots in the Cisco 12016 GSR. The Cisco 12016 GSR chassis has three integral card cages: the upper card cage, the lower card cage, and the switch fabric card cage. You can install line cards in the upper or lower card cage.
The upper card cage has eight user-configurable slots that support the following types of cards in the quantities indicated:
The lower card cage in the Cisco 12016 GSR has eight user-configurable slots, numbered 8 through 15, that support the following types of cards in the quantities indicated:

Figure 3 shows the location of the line card slots in the Cisco 12012 GSR. The Cisco 12012 GSR upper card cage contains 12 slots that accommodate Gigabit Route Processors (GRPs) and line cards:

Figure 4 shows the location of the line card slots in the Cisco 12008 GSR. The Cisco 12008 GSR upper card cage contains ten slots that accommodate the following types of cards in the quantities indicated:

Use a single-mode or multimode, fiber-optic interface cable to connect your Cisco 12000 series router to another router or switch. In general, multimode cables are gray or orange, and single-mode cables are yellow.
For Gigabit Ethernet single-mode and multimode fiber-optic connections, use one duplex SC-type connector (see Figure 5) or two simplex SC-type connectors (see Figure 6).


Attach either one duplex fiber cable or two simplex fiber cables between the line card and the device to which the line card is connected. Observe the receive (Rx) and transmit (Tx) cable relationship shown in Figure 7.

![]() | Warning
Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. |
![]() | Warning
Class 1 laser product (single-mode). |
![]() | Warning
Class 1 LED product (multimode). |
The cable-management system in the Cisco 12000 series router organizes the interface cables entering and exiting the system, keeping them out of the way and free of sharp bends. Excessive bending in an interface cable can degrade performance and possibly harm the cable.
The cable-management system consists of two separate components:
The Cisco 12016 has a cable-management tray for the upper card cage that is positioned above the upper line card slots, and a cable-management tray for the lower card cage that is positioned below the lower line card slots. In addition, there are vertical cable troughs on either side of the card cages that keep the cables organized and secured.
Figure 8 shows a generic cable-management tray and cable-management bracket mounted on a Cisco 12012 GSR.
The cable-management tray on the Cisco 12008 GSR is similar in form and function to the cable-management tray on the Cisco 12012 GSR.

Figure 9 illustrates the available GSR line-card cable-management brackets. The 3-Port Gigabit Ethernet line card uses the cable management bracket 800-05569-01 or greater.

![]() | Caution Do not use the cable-management bracket as a handle to pull out or push in the line card. The cable-management bracket is designed to hold the interface cables and may break if you use the bracket to push, pull, or carry the line card after it is removed from the GSR. |
This section describes the procedures for installing or replacing a Cisco 12000 series line card. The following sections describe how to remove and replace a line card.
![]() | Caution To avoid erroneous failure messages, remove or insert only one line card at a time. Also, after inserting or removing a line card, allow at least 15 seconds before removing or inserting another line card, so that the system can reinitialize and note the current configuration of all interfaces. |
You can remove and replace line cards while the system is operating; you do not need to notify the software or reset the system power. This functionality allows you to add, remove, or replace line cards 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 you reinstall a line card, the system automatically downloads the necessary software from the GRP. After that, the system brings on line only those interfaces that match the current configuration and were previously configured as up. You must configure all others with the configure command. (For 3-Port Gigabit Ethernet line card configuration information, refer to the section "Configuring the Interfaces on the 3-Port Gigabit Ethernet line card" later in this document.)
![]() | Caution The system can indicate a hardware failure if you do not follow proper procedures. Remove or insert only one line card at a time. Allow at least 15 seconds for the system to complete the preceding tasks before removing or inserting another line card. |

Once a line card has been removed from a chassis slot, it should not be re-inserted in that same chassis until at least 10 seconds have elapsed since its removal.
Each line card has two ejector levers that allow you to release the card from its backplane connector when you are removing the line card, and to firmly seat the line card in its backplane connector when you are installing the line card. The ejector levers align and seat the card connectors in the backplane.
When you remove a line card, always use the ejector levers to ensure that the card connector pins disconnect from the backplane properly. Any card that is only partially connected to the backplane can halt the system.
Similarly, when you install a line card, always use the ejector levers to ensure that the card is correctly aligned with the backplane connector, the card connector pins make contact with the backplane in the correct order, and the card is fully seated in the backplane. A card that is only partially seated in the backplane can cause the system to hang and subsequently crash.
To remove line card interface cables, use Figure 10 as a reference and perform the following steps:

Step 1 Attach an ESD wrist strap to your wrist and to the ESD connection socket on the chassis or to a bare metal surface on the chassis or frame.
Step 2 Disconnect and remove the line card interface cables and line card cable-management bracket (see Figure 10).
(a) Disconnect the interface cable connectors from the line card interface ports.
(b) Use a 3/16-inch flat-blade screwdriver to loosen the captive installation screws at the ends of the line card cable-management bracket.
(c) Detach the line card cable-management bracket from the line card and set it aside.
If you are replacing a failed line card, remove the existing card first, and then install the new line card in the same slot (see Figure 11). Line cards support online insertion and removal, meaning you can remove and replace line cards while the system remains powered up.

To remove a line card, use Figure 11 as a reference and perform the following steps:
Step 1 Use a 3/16-inch flat-blade screwdriver to loosen the captive screw at each end of the line card faceplate. (See Figure 11a.)
![]() | Caution When you remove a line card, always use the ejector levers to ensure that the card connector pins disconnect from the backplane properly. Any card that is only partially connected to the backplane can halt the system. |
Step 2 Simultaneously pivot the ejector levers away from each other to release the line card from the backplane connector. (See Figure 11b.)
Step 3 Grasp the ejector levers and pull the line card halfway out of the slot.
Step 4 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. (See Figure 11c.) Avoid touching the line card printed circuit board, components, or any connector pins.
![]() | Caution Be careful not to damage or disturb the EMI spring fingers located on the front-edge of the card face plate. |
Step 5 Place the removed line card on an antistatic mat or foam pad, or place it in an antistatic bag if you plan to return it to the factory.
Step 6 If the line card slot is to remain empty, install a line card blank (product number MAS-GSR-BLANK) to keep dust out of the chassis and to maintain proper airflow through the line card compartment. Secure the line card blank to the chassis by tightening its captive screws.
A line card slides into any available line card slot and connects directly to the backplane.
If you install a new line card, you must first remove the line card blank from the available slot. Refer to the procedures in the section "Removing a Line Card," earlier in this document.
![]() | Caution The system can indicate a hardware failure if you do not follow proper procedures. Remove or insert only one line card at a time. Allow at least 15 seconds for the system to complete the preceding tasks before removing or inserting another line card. |
Use the following procedure to install a line card:
Step 1 Ensure that a console terminal is connected to the GRP console port and that the console is turned on.
Step 2 Attach an ESD wrist strap to your wrist and to the ESD connection socket on the chassis or to a bare metal surface on the chassis or frame.
Step 3 Choose an available line card slot for the line card, and verify that the line card's interface cable is long enough for you to connect the line card with any external equipment.
![]() | Caution To prevent ESD damage, handle line cards by the card carrier edges only. |
Step 4 Grasp the faceplate of the line card with one hand and place your other hand under the card carrier to support the weight of the card; position the card for insertion into the card cage slot. Avoid touching the line card printed circuit board, components, or any connector pins.
![]() | Caution Be careful not to damage or disturb the EMI spring fingers located on the front-edge of the card face plate. |
Step 5 Carefully slide the line card into the slot until the ejector levers make contact with the edges of the card cage, then stop. Make sure the ejector lever hooks catch the lip of the card cage. (See Figure 12.)

![]() | Caution When you install a line card, always use the ejector levers to ensure that the card is correctly aligned with the backplane connector, the card connector pins make contact with the backplane in the correct order, and that the card is fully seated in the backplane. A card that is only partially seated in the backplane can cause the system to hang and subsequently crash. |
Step 6 Simultaneously pivot both ejector levers toward each other until they are perpendicular to the line card faceplate. This action firmly seats the card in the backplane.
Step 7 Use a 3/16-inch flat-blade screwdriver to tighten the captive screw on each end of the line card faceplate to ensure proper EMI shielding and to prevent the line card from becoming partially dislodged from the backplane. (These screws must be tightened to meet EMI specifications.)
![]() | Caution To ensure adequate space for additional line cards, always tighten the captive installation screws on each newly installed line card before you insert any additional line cards. These screws also prevent accidental removal and provide proper grounding and EMI shielding for the system. |
Step 8 Reinstall the line card cable-management bracket (see Figure 10, earlier):
(a) Unhook the line card cable-management bracket from the chassis cable-management tray or bracket.
(b) Position the line card cable-management bracket over the front of the line card faceplate.
(c) Insert and tighten the captive screw at each end of the line card cable-management bracket to secure the bracket to the line card.
Step 9 Plug the interface cable connectors into their original ports on the line card faceplate.
Your 3-Port Gigabit Ethernet line card may have shipped with a GBIC installed. If your 3-Port Gigabit Ethernet line card arrived without the GBIC installed and you need to install it now, or if you need to change your GBIC for another reason, use the procedures in this section:
![]() | Caution To prevent system problems, do not use GBICs from third-party vendors. Use only the GBIC that shipped with your 3-Port Gigabit Ethernet line card. The GBIC contains an internal EPROM that identifies it to the Cisco IOS software. |
![]() | Caution To prevent problems associated with data transmission, you must attach this device only to IEEE 802.3x-compliant devices. |
You can use the exec slot n show controller gigabitethernet gbic EXEC command to display the GBIC type currently installed in the line card, as shown in the following example:
router#exec slot 4 show controller gigabitethernet gbic
========= Line Card (Slot 4) =======
** GBIC serial EEPROM
identifier 0x01 (GBIC)
connector 0x01 (FibreChannel SC)
gbic transceiver_code0x01 1000BASE-SX
encoding 0x01 (8B10B)
br_nominal (units of 100MHz)
13
length_9u (units of 100m)
0
length_50u (units of 100m)
50
length_62_5u (units of 100m)
22
length_cu (unit of 10m)
0
vendor_name HEWLETT-PACKARD
vendor_oui 0x00 00 00
vendor_pn 0x48464252 2D353630 31202020 20202020
vendor_rev 0x30303030 0000
cc_base 0x74
options[0] 0x1A LOS (Loss of Signal) TX Fault TX Disable
br_max (upper baud rate margin, units of %)
0
br_min (upper baud rate margin, units of %)
0
vendor_sn 0x39383037 31303037 34383539 36363933
date_code 98071000 (yymmddvv, v=vendor specific)
Use the following procedure to remove the GBIC from your 3-Port Gigabit Ethernet line card:
Step 1 Disconnect the SC-type fiber-optic cables from the GBIC. Note which plug is Tx and which plug is Rx for reattachment.
Step 2 Attach an ESD wrist strap to your wrist and to the ESD connection socket on the chassis or to a bare metal surface on the chassis or frame.
Step 3 Locate the tabs on either side of the exposed portion of the GBIC and squeeze them with your thumb and forefinger, as you gently pull the GBIC out of the GBIC slot. (See arrows in Figure 13.)

Use the following procedure to insert a GBIC into the Gigabit Ethernet interface:
Step 1 Attach an ESD wrist strap to your wrist and to the ESD connection socket on the chassis or to a bare metal surface on the chassis or frame.
Step 2 Locate the alignment groove on the GBIC. (See the enlargement in Figure 13.) Position the GBIC so that this groove is in the position shown in the enlargement, to ensure that the 20-pin plug on the GBIC is in the correct position.
![]() | Caution To prevent damage to the GBIC plug and receptacle before you insert the GBIC into the GBIC slot on the Gigabit Ethernet interface, ensure that the plug and alignment groove are matched. |
Step 3 Squeeze the tabs on each side of the GBIC using your thumb and forefinger, and insert the GBIC into the GBIC slot on the Gigabit Ethernet interface. (See Figure 13.)
Step 4 Using moderate force, ensure that the GBIC is fully inserted into the 20-pin receptacle at the rear of the GBIC slot. The tabs on either side of the GBIC will snap into place when you have completely and properly inserted the GBIC.
Step 5 Reattach the SC-type fiber-optic cable to the GBIC.
This section contains the following procedures:
In the following procedure, we assume that you have installed a new line card in the router. You must also install a line card cable-management bracket on the line card.
To install a line card cable-management bracket on a line card, perform the following steps:
Step 1 Attach an ESD wrist strap to your wrist and to the ESD connection socket on the chassis or to a bare metal surface on the chassis or frame.
Step 2 Attach the line card cable-management bracket to the line card as follows:
(a) Position the line card cable-management bracket over the front of the line card faceplate and insert the tab on the cable management bracket into the hole on faceplate.
(b) Insert and tighten the captive screw on the line card cable-management bracket to secure the bracket to the line card.
Step 3 Connect the interface cables to the connectors on the 3-Port Gigabit Ethernet line card's GBIC. (See Figure 14a.)
Step 4 Carefully press the interface cable into the cable clip on the end of the cable standoff as shown in Figure 14b. Avoid any kinks or sharp bends in cable.

To remove the interface cables from a line card cable-management bracket and to remove the cable-management bracket from a line card, perform the following steps:
Step 1 Attach an ESD wrist strap to your wrist and to the ESD connection socket on the chassis or to a bare metal surface on the chassis or frame.
Step 2 On a piece of paper, note the current interface cable connections to the connectors on the 3-Port Gigabit Ethernet line card.
Step 3 Disconnect the cable from the line card port. (See Figure 15a.)
Step 4 Loosen the captive installation screw at top of the 3-Port Gigabit Ethernet line card cable-management bracket and remove the bracket from the line card.

After you have installed the line card and connected the interface cables, verify that the line card is working properly by checking the LEDs on the faceplate of the line card. Each 3-Port Gigabit Ethernet line card provides the following two types of LEDs (see Figure 1) for monitoring the operating status of the line card:
During a typical line card boot process, the following events occur:
To verify that the line card is working properly, perform the following operational checks:
There are two, four-digit alphanumeric LED displays at one end of the faceplate, near the ejector lever. These LEDs display messages telling you the state of the card. In general, the LEDs do not turn on until the GRP has discovered and powered up the card. It is normal for a message displayed as part of a sequence or process to appear too briefly for it to be read.
As it boots, the line card displays a sequence of messages that is similar to that shown in Table 5.
| LED Display1 | Meaning | Source |
|---|---|---|
MROM | The MBus microcode begins to execute; nnnn is the microcode version number. For example, microcode version 1.17 would display as 0117.2 This display might not be visible because it occurs for only a brief time. | MBus controller |
LMEM | Low memory on the line card is being tested. | Line card ROM monitor |
LROM | Low memory test has been completed. | Line card ROM monitor |
BSS | Main memory is being initialized. | Line card ROM monitor |
RST | The contents of the reset reason register are being saved. | Line card ROM monitor |
IO | Reset I/O register is being accessed. | Line card ROM monitor |
EXPT | Interrupt handlers are being initialized. | Line card ROM monitor |
TLB | TLB is being initialized. | Line card ROM monitor |
CACH | CPU data and instruction cache is being initialized. | Line card ROM monitor |
MEM | The size of main memory on the line card is being discovered. | Line card ROM monitor |
LROM | The ROM is ready for the download attempt. | Line card ROM monitor |
ROMI | The ROM image is being loaded into line card memory. | GRP IOS software |
FABL | The line card is waiting for the loading of the fabric downloader.3 | GRP IOS software |
FABL | The fabric downloader is being loaded into line card memory. | GRP IOS software |
FABL | The fabric downloader is being launched. | GRP IOS software |
FABL | The fabric downloader has been launched and is running. | GRP IOS software |
IOS | The Cisco IOS software is being downloaded into line card memory. | GRP IOS software |
IOS | The Cisco IOS software is being launched. | GRP IOS software |
IOS | The Cisco IOS software is running. | GRP IOS software |
IOS | The line card is enabled and ready for use. | GRP IOS software |
| 1The LED sequence shown in Table 5 might occur too quickly for you to view; therefore, this sequence is provided in this tabular form as a baseline for how the line cards should function at startup. 2The version of MBus microcode running on your system might be different. 3The fabric downloader loads the Cisco IOS software image onto the line card. |
Table 6 lists other messages displayed on the line card alphanumeric LED display.
| LED Display | Meaning | Source |
|---|---|---|
MRAM | The MBus microcode begins to execute; nnnn is the microcode version number. For example, microcode version 1.17 would display as 0117. This display might not be visible because it occurs for only a brief time. | MBus controller |
MAL | Card malfunction. | GRP |
PWR | Card not powered. | GRP |
PWR | Card powered. | GRP |
IN | In reset. | GRP |
RSET | Reset complete. | GRP |
MBUS | MBus agent downloading. | GRP |
MBUS | MBus agent download complete. | GRP |
ROMI | Getting ROM images. | GRP |
ROMI | Acquisition of ROM image complete. | GRP |
MSTR | Waiting for mastership determination. | GRP |
CLOK | Waiting for slot clock configuration. | GRP |
CLOK | Slot clock configuration done. | GRP |
FABL | Loading fabric downloader complete. | GRP |
FABI | Waiting for fabric initialization to complete. | GRP |
IOS | Downloading of Cisco IOS software is complete. | GRP |
BMA | Cisco IOS software BMA error. | GRP |
FIA | Cisco IOS fabric interface ASIC configuration error. | GRP |
CARV | Buffer carving failure. | GRP |
DUMP | Line card requesting a core dump. | GRP |
DUMP | Line card dumping core. | GRP |
DUMP | Line card core dump complete. | GRP |
DIAG | Diagnostic mode. | GRP |
FDAG | Downloading field diagnostics. | GRP |
FDAG | Launching field diagnostics. | GRP |
POST | Launching power-on self-test (POST). | GRP |
UNKN | Unknown state. | GRP |
Next to each port on the 3-Port Gigabit Ethernet line card are three green LEDs:
The LINK LED is on when a link is established and the following conditions exist:
The LINK LED is off when the following conditions exist:
The ACTIVE LED is on under the following conditions:
The ACTIVE LED is off under the following conditions:
The status LEDs on the line card do not go on until you have configured the line card interfaces (or turned them on if they were shut down). The alpha-numeric display does come on when a line card is inserted correctly into the chassis and is powered on.
In order to verify correct operation of each interface, complete the configuration procedures for the line card (refer to "Configuring the Interfaces on the 3-Port Gigabit Ethernet line card" later in this publication).
If the ACTIVE LED on a line card does not come on, verify the following conditions:
To verify that the line card is connected correctly, perform the following procedure:
Step 1 While the system reinitializes each interface, observe the console display messages and verify that the system discovers the 3-Port Gigabit Ethernet line card. If all of the following conditions are true, the system should recognize the interface, but leave the interface configured as administratively down:
Step 2 When the reinitialization is complete, verify that the ACTIVE LED on the 3-Port Gigabit Ethernet line card is on and remains on. If the LED does stay on, proceed to Step 5. If the ACTIVE LED does not stay on, proceed to the next step.
Step 3 If the ACTIVE LED on the 3-Port Gigabit Ethernet line card fails to go on, determine whether the 3-Port Gigabit Ethernet line card connector is fully seated in the backplane. Loosen the captive installation screws and firmly pivot the ejector levers toward each other until both are perpendicular to the 3-Port Gigabit Ethernet line card faceplate. Tighten the captive installation screws.
After the system reinitializes the interfaces, the ACTIVE LED on the 3-Port Gigabit Ethernet line card should go on. If the ACTIVE LED goes on, proceed to Step 5. If the ACTIVE LED does not go on, proceed to the next step.
Step 4 If the ACTIVE LED still fails to go on, remove the 3-Port Gigabit Ethernet line card and try installing it in another available line card slot.
Step 5 Use the show interfaces command to verify the status of the interface. (If the interface is not configured, you must use the procedures in the section "Configuring the Interfaces on the 3-Port Gigabit Ethernet line card.")
If an error message displays 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.
For more information on troubleshooting and diagnostics, consult the installation and configuration guide that came with your Cisco 12000 series router.
This section provides procedures for configuring the 3-Port Gigabit Ethernet line card:
If you installed a new 3-Port Gigabit Ethernet line card or want to change the configuration of an existing interface, you must enter configuration mode by using the configure privileged EXEC command.
After you verify that the new 3-Port Gigabit Ethernet line card is installed correctly, use the configure command to configure the new interface. Be prepared with the information you will need, such as the interface IP address.
The following procedure is for creating a basic configuration---enabling an interface and specifying IP routing. You might also need to enter other configuration subcommands, depending on the requirements for your system configuration. For descriptions of configuration subcommands and the configuration options available, refer to the appropriate software publications listed in the section "Important Information."
A Cisco 12000 series router identifies an interface address by its line card slot number and port number, in the format slot/port. There are 3 ports on the 3-Port Gigabit Ethernet line card numbered 0, 1, and 2. For example, the slot/port address of the top port on an interface on an 3-Port Gigabit Ethernet line card installed in line card slot 1 is 1/0.
Before using the configure command, you must enter the privileged level of the EXEC command interpreter with the enable command. The system will prompt you for a password if one is set.
Use the following procedure to configure the 3-Port Gigabit Ethernet line card. Press the Return key after each configuration step unless otherwise noted.
Step 1 Confirm that the system recognizes the card by entering the show version command:
Router# show version
For an example of output from the show version command, see the section "Using show Commands to Check System Status" later in this document.
Step 2 Check the status of each port by entering the show interface command:
Router# show interface
For an example of output from the show interface command, see the section "Using show Commands to Check System Status" later in this document.
Step 3 Enter configuration mode and specify that the console terminal will be the source of the configuration subcommands:
Router# configure terminal
Step 4 Enable IP routing by entering the ip routing command:
Router(config)# ip routing
Step 5 At the prompt, specify the new interface to configure by entering the interface command, followed by the type (gigabitethernet) and slot/port (line card slot number/port number). For example, to configure port 0 on a 3-Port Gigabit Ethernet line card in line card slot 1:
Router(config)# interface gigabitethernet 1/0
Step 6 Assign an IP address and subnet mask to the interface with the ip address configuration subcommand, as in the following example:
Router(config-if)# ip address 10.1.2.3 255.255.255.255
Step 7 Change the shutdown state to up and enable the interface:
Router(config-if)# no shutdown
The no shutdown command passes an enable command to the 3-Port Gigabit Ethernet line card. It also causes the line card to configure itself based on the most recent configuration commands received by the line card.
Step 8 Set keepalive messages on or off as desired:
Router(config-if)# keepalive
Keepalive messages are not necessary for the operation of a Cisco 12000 series router, but they are useful for encapsulated protocols such as HDLC. The default is on.
Step 9 Turn off IP multicast fast switching:
Router(config-if)# no ip multicast distributed
Step 10 Add any other configuration subcommands required to enable routing protocols and adjust the interface characteristics.
Step 11 When you have included all of the configuration subcommands to complete the configuration, enter ^Z (hold down the Control key while you press Z) to exit configuration mode.
Step 12 Write the new configuration to memory:
Router# copy running-config startup-config
The system displays an OK message when the configuration has been stored.
After you have completed your configuration, you can check it using show commands. For an explanation of show commands, see the section "Using show Commands to Check System Status."
Each Cisco 12000 series line card maintains information about its configuration, traffic, errors, and so on. You access this information by using the show commands. Following are descriptions and examples of the show commands that display line card information and system status.
Router# show interfaces gigabitethernet 5/0
GigabitEthernet5/0 is administratively down, line protocol is down
Hardware is GigMac 3 Port GigabitEthernet, address is 0047.a34b.56a0 (bia 0047
.a34b.56a0)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, rely 255/255, load 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex mode, link type is force-up, media type is SX
output flow-control is unsupported, input flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 1d16h, output 1d16h, output hang never
Last clearing of "show - counters 1d16h
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
1745 packets input, 1372045 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 38 multicast, 0 pause input
2210 packets output, 1671020 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
4294967295 lost carrier, 4294967285 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
router# show diag 5
SLOT 5 (RP/LC 5 ): 3 Port Gigabit Ethernet
MAIN: type 68, 800-6376-01 rev A0 dev 0
HW config: 0x00 SW key: FF-FF-FF
PCA: 73-4775-02 rev A0 ver 1
HW version 1.0 S/N
MBUS: Embedded Agent
Test hist: 0xFF RMA#: FF-FF-FF RMA hist: 0xFF
DIAG: Test count: 0xFFFFFFFF Test results: 0xFFFFFFFF
L3 Engine: 2 - Backbone OC48 (2.5 Gbps)
MBUS Agent Software version 01.40 (RAM) (ROM version is 02.00)
Using CAN Bus A
ROM Monitor version 10.04
Fabric Downloader version used 03.03 (ROM version is 03.03)
Primary clock is CSC 1
Board is analyzed
Board State is Line Card Enabled (IOS RUN )
Insertion time: 00:00:11 (1d16h ago)
DRAM size: 134217728 bytes
FrFab SDRAM size: 134217728 bytes, SDRAM pagesize: 8192 bytes
ToFab SDRAM size: 134217728 bytes, SDRAM pagesize: 8192 bytes
0 crashes since restart
Router# show version Cisco Internetwork Operating System Software IOS (tm) GS Software (GSR-P-M), Experimental Version 12.0(20000208:113405) Copyright (c) 1986-2000 by cisco Systems, Inc. Compiled Thu 16-Mar-00 10:18 by xxxxxx Image text-base: 0x60010908, data-base: 0x615DE000 ROM: System Bootstrap, Version 11.2(9)GS5, [tamb 176] EARLY DEPLOYMENT RELEASE S OFTWARE (fc1) gsr-1 uptime is 1 day, 16 hours, 42 minutes System returned to ROM by reload at 20:54:13 UTC Thu Oct 21 1999 System image file is "slot0:gsr-p-mz.316trident" cisco 12012/GRP (R5000) processor (revision 0x01) with 131072K bytes of memory. R5000 CPU at 200Mhz, Implementation 35, Rev 2.1, 512KB L2 Cache Last reset from power-on 1 Route Processor Card 2 Clock Scheduler Cards 3 Switch Fabric Cards 1 Quad-port OC3c ATM controller (4 ATM). 1 Single-port OC12c ATM controller (1 ATM). 1 four-port OC3 POS controller (4 POS). 2 OC12 POS controllers (2 POS). 1 OC48 POS E.D. controller (1 POS). 2 OC12 Channelized to DS3 controllers (2 OC12_CH_DS3) 1 six-port DS3 controller (6 DS3). 1 Single Port Gigabit Ethernet/IEEE 802.3z controller (1 GigabitEthernet). 1 Three Port Gigabit Ethernet/IEEE 802.3z controller (3 GigabitEthernet). 1 Ethernet/IEEE 802.3 interface(s) 4 GigabitEthernet/IEEE 802.3 interface(s) 5 ATM network interface(s) 7 Packet over SONET network interface(s) 2 OC12 Channelized to DS3 interface(s), with a total of 24 channels 507K bytes of non-volatile configuration memory. 20480K bytes of Flash PCMCIA card at slot 0 (Sector size 128K). 8192K bytes of Flash internal SIMM (Sector size 256K). Configuration register is 0x0
Router# show running-config Building configuration... Current configuration: ! version 12.0 no service udp-small-servers no service tcp-small-servers ! hostname Maxwell ! enable secret 5 $1$ZBC0$tJO8EeP3VI769LAw.3edJ1 enable password xyzzy ! ip host major 172.27.136.253 ip host minor 171.69.209.28 ip domain-name cisco.com ip name-server 171.69.209.10 clock timezone EST -5 clock summer-time EDT recurring ! interface POS0/0 no ip address shutdown crc 32 ! interface POS0/1 no ip address shutdown crc 32 ! (remainder of displayed text omitted from example)
The following is an example of configuration file commands for the scenario shown in Figure 16. A primary and a standby Cisco 12000 series router sit between two Cisco Catalyst 5000 series switches. The configuration supports HSRP using ISIS.

The configuration for the primary router, shown in Figure 16, is as follows:
ip routing no cdp run ! no ip domain-lookup line 0 history size 30 ! service timestamps debug datetime msec service timestamps log datetime msec ! router isis area2 ! NSAP consists of area/ system ID /n-selector ! NSAP could be 20 Bytes in length ! n-selector is always 1 Byte ! if n-selector is zero then NSAP becomes NET ! the NSAP is for area 2/system ID 1/n-selector 0 net 02.1111.1111.1111.00 #NET - Stands for Network Entity Title is-type level-2-only redistribute static ! interface Ethernet 0 ip address 20.13.5.13 255.255.0.0 ip helper-address 223.255.254.254 shut ! ! interface G4/0 ip address 23.0.0.2 255.0.0.0 mac-addr 0010.1234.2302 ip router isis area2 no keepalive no shutdown ! !HSRP CONFIGURATION no ip redirects standby 1 priority 200 standby 1 ip 23.0.0.4 ! !This allows the router to become active when its !priority is higher than the others in the same group standby 1 preempt !sets interval between hellos and the hold time for !the standby router to become active standby 1 timers 3 4 ! interface G6/0 mac-addr 0010.1234.1002 ip address 10.0.0.2 255.0.0.0 ip router isis area2 no keepalive no shutdown !HSRP CONFIGURATION no ip redirects standby 2 priority 200 standby 2 preempt standby 2 ip 10.0.0.4 !This allows the router to become active when its !priority is higher than the others in the same group standby 2 preempt !sets interval between hellos and the hold time for !the standby router to become active standby 2 timers 3 4
The configuration for the standby router, shown in Figure 16, is as follows:
hostname gemfr1 ip routing no ip domain-lookup line 0 history size 30 ! service timestamps debug datetime msec service timestamps log datetime msec ! ip host abrick 223.255.254.254 router isis area2 ! NSAP consists of area/ system ID /n-selector ! NSAP could be 20 Bytes in length ! n-selector is always 1 Byte ! if n-selector is zero then NSAP becomes NET ! the NSAP is for area2/system ID 2/n-selector 0 net 02.2222.2222.2222.00 #NET - Stands for Network Entity Title is-type level-2-only redistribute static net 02.2222.2222.2222.00 is-type level-2-only ! interface Ethernet0 ip address 20.13.5.12 255.255.255.0 ip helper-address 223.255.254.254 no keepalive shutdown ! ! interface G4/0 ip address 23.0.0.1 255.0.0.0 mac-address 0010.1234.2301 ip router isis area2 no keep no shutdown ! !HSRP standby configuration no ip redirects standby 1 priority 101 standby 1 ip 23.0.0.4 !This allows the router to become active when its !priority is higher than the others in the same group standby 1 preempt !sets interval between hellos and the hold time for !the standby router to become active standby 1 timers 3 4 ! ! interface G6/0 ip address 10.0.0.1 255.0.0.0 mac-address 0010.1234.1001 ip router isis area2 no keep no shutdown ! !HSRP standby configuration no ip redirects standby 2 priority 101 standby 2 ip 10.0.0.4 !This allows the router to become active when its !priority is higher than the others in the same group standby 2 preempt !sets interval between hellos and the hold time for !the standby router to become active standby 2 timers 3 4 !
A virtual local area network (VLAN) is a switched network that is logically segmented on an organizational basis, by functions, project teams, or applications rather than on a physical or geographical basis. For example, all workstations and servers used by a particular workgroup team can be connected to the same VLAN, regardless of their physical connections to the network or the fact that they might be intermingled with other teams. Reconfiguration of the network can be done through software rather than by physically unplugging and moving devices or wires.
The 3-Port Gigabit Ethernet line card supports VLAN trunking in accordance with the 802.1Q specification.
Typically, when configuring a VLAN trunk between two Gigabit Ethernet ports or between a Gigabit Ethernet port and another VLAN switch, you must make sure to configure the encapsulation type and the VLAN ID.
The following is an example of a VLAN trunk configured between two routers, with 802.1Q encapsulation (dot1Q) and a VLAN ID of 111:
Router 1
interface GigabitEthernet5/1.1 encapsulation dot1Q 111 ip address 112.1.1.1 255.255.0.0 no ip directed-broadcast no cdp enable
Router 2
interface GigabitEthernet5/1.1 encapsulation dot1Q 111 ip address 112.1.1.2 255.255.0.0 no ip directed-broadcast no cdp enable
The VLAN is configured on Gigabit Ethernet port and subinterface 5/1.1 on both routers.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:
Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval and negate your authority to operate the product.
This class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
This Apparatus complies with EN55022 Class B and EN50082-2 standard requirements in Europe.
This is a class B product based on the standard of the Voluntary Control Council for Interference from Information Technology Equipment (VCCI). If this is used near a radio or television receiver in a domestic environment, it may cause radio interference. Install and use the equipment according to the instruction manual.

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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.
CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access CCO in the following ways:
For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more current than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
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Posted: Mon Jun 5 22:37:34 PDT 2000
Copyright 1989 - 2000©Cisco Systems Inc.