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Product Numbers: APP-JT1=, APP-LT=2, APP-LT4=, APP-LT6=, APP-LT8=, APP-IT1=, APP-ST2=, APP-ST4=, and APP-TT1=
This document contains instructions for installing the 10Base-T Ethernet transceiver applique in your router. The applique, shown in Figure 1, provides a direct connection between your router and an unshielded twisted-pair (UTP) Ethernet network by way of an RJ-45 connector. The applique is a system-integrated IEEE 802.3-compliant applique that eliminates the need for a separate media attachment unit (MAU) and attachment unit interface (AUI) cable.
The sections in this document include the following:
The 10BaseT applique is mounted on a connector plate, as shown in Figure 1, which is then installed in the rear of the chassis. A large and individual connector plates are shown in Figure 2. The small connector plate, which is used in the M chassis, is not shown.
The applique, which has an RJ-45 connector for direct connection to a UTP network segment and three green status light-emitting diodes (LEDs), is installed on a connector plate on the rear of the chassis. Internally, it is connected to your Ethernet network interface card by way of a ribbon cable. The network interface card can be a CSC-MCI card (in all chassis), which provides up to two Ethernet ports, or a CSC-MEC card (AGS+ only), which provides six Ethernet ports. The CSC-MCI card is shown in Figure 3, and the CSC-MEC card is shown in Figure 4.
The pinout for the RJ-45 is given in Table 1.
Table 1 RJ-45 Connector Pinout
Following are the configuration considerations for the CSC-MCI and CSC-(C2) MEC interface cards.
The CSC-MCI card provides up to two Ethernet ports (the SCI card has none) and uses grounding options to accommodate the differences between the Ethernet Version 1 and IEEE 802.3 electrical specifications. Ethernet Version 1 permits certain signals to float, whereas IEEE 802.3 requires the signals to be grounded. Table 2 lists the CSC-MCI grounding options. Inserting a jumper grounds the signal and removing a jumper allows the signal to float. The factory default is to ground all signal pairs, which is compatible with both Ethernet and IEEE 802.3 requirements.
Table 2 CSC-MCI Jumper Settings for Grounding Options
On the MCI card, jumpers W94 and W93 are 3-pin jumpers that select between Ethernet and
IEEE 802.3 electrical levels. Jumper W94 controls the first Ethernet port, and jumper W93 controls the second Ethernet port. The factory default is to select IEEE 802.3 (Ethernet Version 2). Using the card orientation shown in Figure 3, place a jumper on the lower pair of pins to select Ethernet Version 1.
Figure 5 shows the appropriate jumper settings (jumpers W1 through W6) to use when you attach Ethernet Version 1 cables to the Ethernet connector. Jumper settings shown in Figure 5 are factory defaults. Figure 6 shows the appropriate jumper settings to use when you attach Ethernet Version 2 and IEEE 802.3 cables. The explanation for the Ethernet jumper settings follows.
Jumpers on pin sets W1 through W6 set the electrical specifications for the Ethernet transceiver connection. Each jumper is moved over one pin (compare the jumpers in Figure 5 and
Figure 6) to change the electrical specifications of its corresponding connector (W1 for E0 and so forth). Pin set W1 corresponds to the far left connector (E0), using the orientation in Figure 5 or Figure 6 (facing the component side of the card with the connectors at the bottom). Each connector corresponds consecutively to a pin set.
Note All jumper settings for the CSC-MEC also apply to the
CSC-C2MEC. The CSC-MEC and CSC-C2MEC differ only by firmware version; the CSC-C2MEC
works only with the CSC-CCTL2. There are two hardware versions of the CSC-MEC: Revision 5.0
and Revision 5.1. Revision 5.1 CSC-MEC cards can be used as CSC-C2MEC cards (with the
appropriate microcode), but
Revision 5.0 CSC-MEC cards cannot.
Before installing the applique, ensure that your system meets the following prerequisites:
There are several types of twisted-pair cable. UTP cable should be 26 to 22 AWG (0.4 to 0.6 mm) wire in a multiwire cable with 100 ohms impedance. The 802.3 specification states that the maximum length of a 10Base-T link segment is 100 meters or 328 feet of UTP wiring; do not exceed these limits.
If you are not connected to a hub, and another 10Base-T transceiver applique is connected to the opposite end of your link, the UTP cabling must be crossed as shown in Figure 7. The RD- and RD+ signals must be swapped with the TD- and TD+ signals. When the opposite end of your link is connected to a hub, the hub performs this crossover function, and it is not necessary to cross the cables.
Verify that you received all of the parts for the interface(s) you will install. If any parts are missing, contact a customer service representative.
The Ethernet transceiver applique is a self-contained unit. The internal ribbon cable, which connects the applique to the internal network interface control card, is permanently attached to the 16-pin connector on the applique.
The following tools are required to install the applique:
Electrostatic discharge (ESD) is a discharge of stored static electricity that can damage equipment and impair electrical circuitry. It occurs when electronic components are improperly handled and can result in complete or intermittent failures.
Following are guidelines for preventing ESD damage:
 | Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be within the range of 1 and 10 Mohms. |
Choose the following procedure that describes your chassis type.
Following is the procedure for accessing the A-type chassis interior. You will need a medium-sized flat-blade screwdriver.
 | Warning Before accessing the chassis interior, turn OFF power to the chassis and unplug the power cord because hazardous voltages may exist in or near the power supply. Use extreme caution when working near the power supply. |
Step 2 If the chassis is rack mounted, disconnect all external cables from the chassis rear panel. Note where these cables were connected, for reinstallation.
Step 3 Remove the chassis from the rack and transfer it to a desktop or work table.
Step 4 If you will need to handle any electronic components (cards and so forth), attach appropriate ESD protection and attach the AC power cord, but to prevent a shock hazard, make certain the chassis power is OFF.
Step 5 To access cards in the card cage, loosen the two thumbscrews and remove the front panel from the chassis. (See Figure 8.) If you wish to access cards in the card cage only, skip the next step.
Step 6 To access other system components, locate and remove the seven No. 1 Phillips screws securing the top cover. (See Figure 8.) Set the top cover and screws aside.
To reassemble the chassis, reverse all steps.
Following is the procedure for accessing the MGS chassis interior. You will need a medium-sized flat-blade screwdriver and a No. 1 Phillips screwdriver.
Step 2 If the chassis is rack mounted, disconnect all external cables from the chassis rear panel. Note where these cables were connected, for reinstallation.
Step 3 Remove the chassis from the rack and transfer it to a desktop or work table.
Step 4 If you need to handle any electronic components (cards, and so forth) attach appropriate ESD protection and attach the AC power cord, but to prevent a shock hazard, make certain the chassis power is OFF.
Step 5 To access the cards in the card cage, locate the three flat-blade screws that secure the card cage access panel. (See Figure 9.) These screws are located on the top of the MGS chassis access panel.
Step 6 Using the flat-blade screwdriver, turn each of these screws 1/4 to 1/2 turn counterclockwise until the screw pops up.
Step 7 Using the No. 2 Phillips screwdriver, loosen the three screws at the bottom edge of the card cage cover. (Do not remove these screws completely.) Carefully remove the card cage cover and set it aside.
Step 8 To access the other chassis components, use the No. 1 Phillips screwdriver to remove the 14 screws that secure the top cover of the MGS chassis. (See Figure 9.) Set the top cover aside.
To reassemble the chassis, reverse all steps.
Following is the procedure for accessing the C chassis interior. You will need a medium-sized flat-blade screwdriver and No. 1 and No. 2 Phillips screwdrivers.
Step 2 If you need to handle any electronic components (cards, and so forth) attach appropriate ESD protection and attach the AC power cord, but to prevent a shock hazard, make certain the chassis power is OFF.
Step 3 Use the No. 2 Phillips screwdriver to remove the ten screws that secure the cover of the
C chassis. There are two screws on each side and six screws on the bottom of the chassis. (See Figure 10.)
Step 4 Position the chassis so that the back (the side with the ports) is on your left; the front of the chassis (with the LED) is on your right; and the chassis top is facing up. (This is completely opposite of the chassis position shown in Figure 10.)
Step 5 Pull the front of the cover to the right (while securing the back of the chassis with your left hand) until the power supply and card cage are completely exposed. Because the fit is snug, pull slowly and carefully, and do not remove the cover.
 | Caution Several cables are located close to the interior of the C chassis cover. Avoid damage to these cables by ensuring that they do not impede the cover as you remove it. |
To reassemble the chassis, reverse all steps.
The procedures in this section describe how to install the applique in the rear of the chassis, connect the applique ribbon cable to an Ethernet port on a network interface card (CSC-MCI or CSC-MEC), and anchor the ribbon cable to the bottom of the chassis with the clip provided.
If you are installing the applique in an M or C chassis, you must use applique assembly Part Number 73-0981, which is specifically for the M and C chassis. It contains a shorter cable than the one used in the A-type chassis. (The longer cable can propagate noise.) Before proceeding, ensure that your system and equipment meet the requirements listed in the section "Installation Prerequisites" on page 5.
The applique is already mounted on a connector plate. If there is an unused (blank) connector plate of the same size in the chassis, you need only install the new plate as described in the procedure "Installing the Connector Plate." If you are replacing one or more connectors, you also need to perform the steps in the following procedure "Replacing an Existing Connector Plate."
When installing more than one applique, install and connect each applique before installing the next; this will help avoid crossing the internal cables and mixing up your designated Ethernet interfaces.
If you have more than one Ethernet connector on a large plate, and are not replacing all of them with UTP appliques, you can do either of the following:
You can leave unused connectors installed on a connector plate; however you must disconnect all internal cables. Otherwise, they could propagate noise on other connections.
 | Caution Before proceeding, ensure that the CSC-MCI or CSC-MEC card jumpers are set for Ethernet Type 2 (802.3). On the CSC-MCI card, the correct settings for jumpers W93 and W94 are shown in Figure 5. On the CSC-MEC card, the correct settings for jumpers W1 through W6 are shown in Figure 6. |
Following is the procedure for removing or disconnecting the appliques on an existing connector plate. If you are not replacing an existing connection, skip this section and proceed to the following section "Installing the Connector Plate."
Step 2 Trace the internal ribbon cable to the port on the CSC-MCI or CSC-MEC card. Tag the port if necessary to avoid confusing it later.
Step 3 Unplug the ribbon cable from the card, and route it under the card cage.
Step 4 If you are going to leave the existing connector installed, roll up the cable and secure it with a tie wrap or rubber band, then lay it down out of the way of other cables. Skip the next two steps.
Step 5 On the rear of the chassis, loosen and remove the screws that secure the connector plate to the chassis. Individual plates are secured with two screws, small plates with four screws, large plates with six screws.
Step 6 Carefully lift the plate up and out of the chassis, without straining any internal ribbon cables.
Step 7 To complete the installation, proceed to the following section, "Installing the Connector Plate."
Following is the procedure for installing the connector plate on which the applique is mounted. If you are replacing an existing Ethernet connection, first perform the steps in the previous section.
Step 2 On the rear of the chassis, remove a blank connector plate from the connector area. Individual plates are secured with two screws, small plates with four, large plates with six.
Step 3 Place the new connector plate on the inside of the chassis, against the opening, with the RJ-45 connector facing out, and the component side of the applique facing up. (See
Figure 2.) Secure the applique with the screws you removed in step 2.
Step 4 Internally, connect the ribbon cable to an available Ethernet port on the CSC-MEC or CSC-MCI card in the system card cage. Route the cable under the system card cage and up to the connector in the front of the chassis. Be careful not to strain or crimp the cable.
Step 5 M and C chassis only—Ensure that you are installing the applique that includes a 26-inch cable. To keep the internal ribbon cable away from the card cage, anchor it to the bottom of the chassis with the clip provided.
Slide one or more cables into a clip, remove the paper backing, and press the adhesive side of the clip onto the chassis bottom to secure it. See Figure 11 for suggested placement.
Step 6 Attach the external network interface cable to the connector on the applique and the other end to your network segment.
Step 7 Turn ON power to the system to check the installation as described in the following section.
After you install your applique, verify that it is installed correctly before you replace the cover. Turn on the system power and observe the status indicators on the applique and the interface card, then use EXEC show commands to verify that your interfaces are recognized by the system and have been assigned port addresses.
Power up the system and observe the status indicators on the applique, which are shown in
Figure 12. Verify that the indicators come on as follows:
Note If the opposite end of the link is connected to a hub, the hub will perform a crossover function, which means that the transmitter from the unit goes to the receiver of the hub, and the transmitter from the hub goes to the receiver of the unit. This configuration is correct, however, if the unit connects to an external MAU; then the crossover function must be performed in the attaching wires. Otherwise, the two transmit wires are connected to each other, as are the two receive wires.
If the LINK indicator comes on, but no data is getting through, or if the bit error rate increases, check the MCI or MEC card to ensure the jumpers are properly set for Ethernet Version 2. The correct jumper settings are described in the section "Installation Prerequisites" on page 5.
Also, verify that the appropriate LEDs on the CSC-MCI or CSC-MEC card come on, indicating that the new interface is recognized. The following two illustrations show the indicators at the front edge of the MEC card (shown in Figure 13) and the MCI card (shown in Figure 14) as viewed when the cards are installed in the card cage.
The MEC card indicators are located to the right of each connector port. The indicator for each connected port should come on and remain on after initialization.
The MCI card contains 16 indicators, four banks of four LEDs. Each bank represents an Ethernet or serial port. As shown in Figure 14, the far-left indicator (LED 0) represents Ethernet 0, and the eighth (LED 8) represents Ethernet 1. If only one Ethernet interface is connected to the MCI card, only the far-left indicator (LED 0) should come on. If two Ethernet interfaces are connected to the card, both Ethernet indicators (LED 0 and LED 8) should come on.
An error condition exists if one of the following occurs:
If any of these happen, ensure that all cards are firmly seated and all cables are securely installed. If a second power-up attempt also fails, contact a service representative.
When the status indicators show that the applique is installed correctly, use EXEC command displays to verify that the new Ethernet interface is properly recognized by the system. When the system is started, the interface cards query the appliques for interface information. If an applique is not connected to its interface card when the system initializes, it will be not be recognized until it is properly connected to the card and the system is restarted.
Use the EXEC command show config to obtain the current system configuration information. Each interface is listed along with its assigned ip address. Verify that the new Ethernet interface appears. Following is a sample display:
The EXEC command show version displays the system hardware configuration. The output includes a summary of hardware features, software version strings, and the names and sources of configuration files and/or boot images. The total number of each type of interface is listed; verify that the total number of Ethernet 802.3 interfaces is correct. Following is a partial, sample display:
The EXEC command show controller mci displays the current internal status of the MCI and SCI cards, including the interfaces and how the card has identified them. Although the command specifies the MCI card, it also provides the same information for SCI cards: controller types 1.0 and 1.1 are MCI cards; controller type 2.0 is an SCI card.
The display lists all interfaces connected to the MCI and SCI cards, including Ethernet interfaces on the MCI cards. The display indicates that the system has identified your new interface, but it does not indicate the state of the line or protocol. Use the EXEC command show controller cbus to display the same information for the MEC card.
Following is a sample displays:
To obtain more extensive information about the interfaces, such as the state of the lines and protocol types, use the EXEC command show interface ethernet to display statistics about each of the Ethernet interfaces in the server. The first line of the show interface display names the interface and its unit number (Ethernet 0), indicates whether the hardware and the line protocol are up or down. If the line protocol is down, the hardware is not functioning properly; ensure that the network interface is properly connected and terminated.
Following is a partial sample display:
You can also use the command show interface (without variables) to display all network interfaces. Each new Ethernet interface should be appended to the list of existing interfaces, with the next sequential number assigned to it.
When the installation check is successful:
Step 2 Replace and secure the chassis cover.
Step 3 Affix the new labels (10Base-T 0, 10Base-T 1, and so forth) below the connector on the applique.
Step 4 Turn ON power to the system to configure your network interface.
The router products configuration publication contains additional information for configuring the new interface and managing the system.
Posted: Thu Nov 6 16:08:48 PST 2003
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