Cisco CSC-MEC User manual

1
Doc. No.
Copyright © 1993
Cisco Systems, Inc.
All rights reserved.
InstallingtheCSC-MECandCSC-C2MEC
MultiportEthernetControllerCards
78-0716-02
Product Numbers: CSC-MEC2=, CSC-MEC4=, CSC-MEC6=, CSC-C2MEC2=, CSC-C2MEC4=, and
CSC-C2MEC6=
This document provides the procedures for installing the ciscoBus multiport Ethernet controller
cards (CSC-MEC and CSC-C2MEC) in your AGS+ router. The CSC-MEC is compatible only with
the first-generation ciscoBus controller card (CSC-CCTL); the CSC-C2MEC is compatible only
with the second-generation ciscoBus controller card (CSC-CCTL2). ciscoBus compatibility is
described in the section, “Configuring the CSC-MEC and CSC-C2MEC Cards,” on page 9.
In the following sections, the terms CSC-MEC or MEC are used to indicate both cards unless
otherwise indicated. 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:
Version 5.0 and Version 5.1. Version 5.1 CSC-MEC cards can be used as CSC-C2MEC cards (with
Microcode Version 10.0 or later), but Version 5.0 CSC-MEC cards cannot be used as CSC-C2MEC
cards.
The CSC-MEC card occupies a ciscoBus slot in the system card cage. Standard 15-pin or 10BaseT
Ethernet appliques, which are installed on connector plates in the rear of the chassis, provide the
interface between the CSC-MEC card and your 802.3/Ethernet Version 2 or Version 1 network.
The sections in this document include the following:
•Description of Parts, page 2
•Installation Prerequisites, page 7
•CSC-MEC Card, page 2
•Configuring the CSC-MEC and CSC-C2MEC Cards, page 9
•ciscoBus Configuration Considerations, page 10
•Installation, page 17
•Configuring the Interfaces, page 26
With the exception of compatibility requirements and the LEDs used to verify the installation, the
procedures are the same for both the CSC-MEC (first-generation ciscoBus) and CSC-C2MEC
(second-generation ciscoBus) cards.

2 Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards
Description of Parts
Description of Parts
The CSC-MEC card resides in the router system card cage. Each port on the CSC-MEC provides
one Ethernet interface and connects to an Ethernet applique in the back of the chassis with
internally-routed ribbon cables. Ethernet appliques are available in standard 15-pin attachment unit
interface (AUI) and RJ-45 unshielded twisted-pair (UTP) configurations. The 15-pin appliques
require an external media attachment unit (MAU) or Ethernet transceiver to complete the connection
between the router and your Ethernet network. The 10BaseT applique contains a built-in transceiver
and connects directly to a UTP network segment.
CSC-MEC Card The two-, four-, or six-port Multiport Ethernet Controller (CSC-MEC) card operates on the
high-speed ciscoBus backplane in the router. A 16-million-instructions-per-second (mips) bit-slice
processor on the card provides a high-speed data path between the CSC-MEC and other high-speed
interfaces on the ciscoBus, and enables switching rates of over 20,000 packets per second for both
bridging and routing. The CSC-MEC supports IEEE 802.3/Ethernet Version 2 specifications by
default, and it supports Version 1 when jumpers on the card are changed as described in the section
“Cables,” on page 5.
A six-port card (CSC-MEC6) is shown in Figure 1. Two-port (CSC-MEC2) and four-port
(CSC-MEC4) versions are also available. The card shown in Figure 1 is an MEC controller type 5.1,
card Revision E. Earlier versions of the card, MEC controller type 5.0 (card Revisions A through D)
are not compatible with the second-generation ciscoBus (CSC-CCTL2). Commands for displaying
the card revision (version) are described in the section “System Requirements,” on page 7.
Figure 1 CSC-(C2)MEC6 Controller Type 5.1
TheCSC-MECcardmustbeinstalledinarouterthatisrunningSystemSoftwareRelease8.3orlater
and that contains a CSC-CCTL ciscoBus controller card. The CSC-C2MEC must be installed in a
router that is running System Software Release 9.1 or later and that contains a CSC-CCTL2
ciscoBus controller card. Instructions for determining your current system software release and the
typeofciscoBuscontrollerinstalledareprovided inthesection “ciscoBus Controller Compatibility,”
on page 10.
H1530a
Ethernet connectors
LEDs (6)
W1 W2 W3 W4 W5 W6
U809
U808
U807
U806
U911
U910
U909
U908
U705
U707
U708
E0 E5
Version
jumpers
Microcode
EPROMs (11)

Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards 3
Description of Parts
Ethernet Appliques
Ethernet appliques provide the external interfaces for CSC-MEC card ports. One or more appliques
are mounted on a connector plate, which is installed in the rear of the router. The 15-pin Ethernet
connector applique connects to a 10Base5 (thick -wire), 10Base2 (thin-wire), or 10BaseT (UTP)
network with the appropriate MAU or Ethernet transceiver. The 10BaseT applique connects to a
10BaseT network only and does not require an external transceiver. The following sections describe
the Ethernet appliques and some of the Ethernet transceivers you may need.
Ethernet 10BaseT The Ethernet 10BaseT applique (see Figure 2) combines an RJ-45 connector for direct connection
to an unshielded twisted-pair (UTP) network segment and a UTP transceiver. The 10BaseT applique
is compliant with IEEE 802.3. The pinout for the 10BaseT RJ-45 connector is listed in Table 1.
Figure 2 10BaseT Ethernet Transceiver Applique
Table 1 10BaseT RJ-45 Connector Pinout
Pin Signal Name
1 TD+
2 TD–
3 RD+
4 Not used
5 Not used
6 RD–
7 Not used
8 Not used
LINK
RCV
XMT
H1124a

4 Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards
Description of Parts
Ethernet AUI The 15-pin Ethernet attachment unit interface (AUI) connector, shown in Figure 3, provides a
standard Ethernet IEEE/802.3 connection between a CSC-MEC card port and the external Ethernet
network. An Ethernet transceiver, which is required for use with this connector, provides the
connection to thick-wire, thin-wire, twisted-pair, and other Ethernet media. The Ethernet transceiver
either plugs directly into the 15-pin connector or is attached with an AUI interface cable. The pinouts
for the AUI cable and the 15-pin connector are listed in Table 2.
Figure 3 15-Pin AUI Ethernet Connector Applique
Table 2 Ethernet (AUI) Pinout
1. Not used.
Pin Circuit Description
3 DO-A Data Out Circuit A
10 DO-B Data Out Circuit B
11 DO-S Data Out Circuit Shield1
5 DI-A Data In Circuit A
12 DI-B Data In Circuit B
4 DI-S Data In Circuit Shield
7 CO-A Control Out Circuit A1
15 CO-B Control Out Circuit B1
8 CO-S Control Out Circuit Shield1
2 CI-A Control In Circuit A
9 CI-B Control In Circuit B
1 CI-S Control In Circuit Shield
6 VC Voltage Common
13 VP Voltage Plus
14 VS Voltage Shield1
Shell PG Protective Ground

Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards 5
Description of Parts
Cables This section describes the Ethernet interface cables you may need to install between the router and
an Ethernet transceiver or MAU. It also provides cabling configurations to use with UTP networks.
AUI (Ethernet Transceiver) Cable
The standard 15-pin AUI Ethernet connectors require an external transceiver and, unless the
transceiver plugs directly into the router rear panel connector, also require an Ethernet transceiver
cable (or AUI cable) to connect the transceiver to the router. If you are building a transceiver cable,
refer to the pinout listed in Table 2.
Twisted-Pair Cabling
There are several types of twisted-pair cable. Unshielded twisted-pair (UTP) cable should be 26 to
22 American wire gauge (AWG)—0.4- to 0.6-millimeter (mm)—wire in a multiwire cable with
100-ohms impedance. The 802.3 specification states that the maximum length of a 10BaseT 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 10BaseT transceiver applique is connected to the
opposite end of your link, the UTP cabling must be crossed as shown in Figure 4. 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, so it is not necessary to cross the
cables.
Figure 4 Applique-to-Applique UTP Cable Diagram
TD+
TD-
RD+
Not used
Not used
RD-
Not used
Not used
Local applique
RJ-45 pins
1
2
3
4
5
6
7
8
TD+
TD-
RD+
Not used
Not used
RD-
Not used
Not used
1
2
3
4
5
6
7
8
Opposite applique
RJ-45 pins
H1117a

6 Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards
Description of Parts
Ethernet Transceivers
When using a standard 15-pin AUI Ethernet connector, you need an Ethernet transceiver or media
attachment unit (MAU) to connect the router to the Ethernet network. Several types of single- and
multiport transceivers are available. The type you use depends on the type of cabling your Ethernet
network uses: thick-wire (10Base5), thin-wire (10Base2), or unshielded twisted-pair (10BaseT).
Some single-port transceivers attach directly to the 15-pin connector on the applique; others, such
as multiport transceivers for connecting multiple Ethernet interfaces to a network, require interface
cables. Figure 5 shows examples of different types of transceivers and installations.
Figure 5 Ethernet Transceivers
BNC connectors to thin-wire or
thick-wire Ethernet network
Ethernet XCVR
15-pin AUI
connector
Transceiver
cable
To Ethernet port
To 10BaseT
Ethernet network
UTP cable
RJ-45
connector
15-pin AUI connector
Attaches directly to Ethernet
port or to the transceiver cable
Multiport transceiver
H1979
Transceiver cable
15-pin AUI connector
To Ethernet port

Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards 7
Installation Prerequisites
Installation Prerequisites
Before installing the CSC-MEC card or appliques, ensure that your existing system components
meet the compatibility requirements described in this section, and that you have the necessary parts
and tools you will need to perform the installation without interruption.
System Requirements
The router in which you will install the components must meet the following physical requirements:
•Your router is an AGS+ model with a CSC/3 or CSC/4 processor card.
•A ciscoBus controller card (CSC-CCTL or CSC-CCTL2) is installed in the center ciscoBus slot.
•There is at least one ciscoBus slot available for each CSC-MEC card you will install.
•The total power drawn by the system will not exceed the maximum power budget after the new
card is installed. (See the section “Chassis Power Budget,” on page 14.)
•Your site has an Ethernet transceiver, if required, and the appropriate network interface wiring
(10Base2, 10Base5, or 10BaseT) in place and available at the rear panel of the router.
•If you are reinstalling a repaired or modified controller type 5.0 (Revision D or earlier)
CSC-MEC card, the ciscoBus controller (CSC-CCTL) firmware version must be earlier than
10.0 (first-generation ciscoBus).
•If you are installing a 10BaseT applique, CSC-MEC jumpers (W1 through W6) for the ports to
be connected to the applique are set for IEEE 802.3 Ethernet Version 2.
In addition to the physical requirements, your system must also meet the following software
requirements, depending upon the type of interface card (CSC-MEC or CSC-C2MEC) you are
installing:
•If you are installing a CSC-MEC (first-generation ciscoBus interface) card ensure the following:
—The system software is Release 8.3 or later
—The ciscoBus controller is a CSC-CCTL (controller type 3.0 or later)
—All ciscoBus interface cards are running microcode versions earlier than 10.0
•If you are installing a CSC-C2MEC (second-generation ciscoBus interface) card ensure that:
—The system software is Release 9.1 or later.
—The ciscoBus controller is a second-generation CSC-CCTL2 (controller type 6.0).
—All ciscoBus interface cards are running Microcode Version 10.0 or later.
•The microcode on all Multibus cards and the CSC-ENVM is compatible with the system
software currently in the chassis or the version you are installing. Microcode compatibility
requirements are described in “Compatibility with Other Cards,” on page 15.
You can display the type of processor card (CSC/3 or CSC/4) installed and the current software
release with the EXEC command show version. The current system software release is displayed in
the first line of the output; the processor card information is displayed on the eighth line; followed
by a list of the installed interface cards.

8 Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards
Installation Prerequisites
A sample of the show version command display, which shows a system running Software
Release 9.1(1), follows:
router# show version
GS Software (GS3), Version 9.1(1)
Copyright (c) 1986-1992 by cisco Systems, Inc.
Compiled Wed 29-Jul-92 17:02
System Bootstrap, Version 4.5(0.5)
router uptime is 22 days, 12 hours, 23 minutes
System restarted by power-on
System image file is "router-system", booted via tftp from 131.108.1.111
CSC4 (68040) processor with 16384K bytes of memory.
X.25 software.
Bridging software.
1 MCI controller (2 Ethernet, 0 Serial).
1 cBus controller.
1 MEC controller (6 Ethernet).
Environmental Controller.
(text omitted)
You can display a description of the current ciscoBus controller and interface cards with the EXEC
command show controller cbus. The ciscoBus controller type is displayed, followed by
descriptions of each ciscoBus interface card, the slot in which it is installed, the controller type, and
the microcode version. The following example display shows a first-generation ciscoBus controller
(CSC-CCTL), which is a controller type 3.0. The MEC interface listed in the display is a controller
type 5.1 installed in ciscoBus slot 3.
router# show cont cbus
cBus 1, controller type 3.0, microcode version 3.0
128 Kbytes of main memory, 32 Kbytes cache memory
(text omitted)
FDDI 0, controller type 4.1, microcode version 2.0
Interface 0 - Fddi0, station address 0000.0c01.7bbd (bia 0000.0c01.7bbd)
(text omitted)
MEC 3, controller type 5.1, microcode version 2.4
Interface 18 - Ethernet2, station address 0000.0c02.a03c
(text omitted)
The following example display shows a second-generation ciscoBus controller (CSC-CCTL2),
which is a controller type 6.0. The MEC interface shown in the display is also a controller type 5.1,
but the microcode version of all ciscoBus interface cards is 10.1.
router# show cont cbus
cBus 1, controller type 6.0, microcode version 10.0
512 Kbytes of main memory, 128 Kbytes cache memory
(text omitted)
FDDI-T 0, controller type 7.1, microcode version 10.1
Interface 0 - Fddi0, station address 0000.0c02.6aa3
(text omitted)
MEC 3, controller type 5.1, microcode version 10.1
Interface 10 - Ethernet2, station address 0000.0c02.61b7
(text omitted)
For descriptions of fields and additional commands, refer to the router products configuration
publication. If your system does not meet these requirements, contact a customer service
representative for upgrade information.

Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards 9
Installation Prerequisites
Configuring the CSC-MEC and CSC-C2MEC Cards
Figure 6 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 6 are factory
defaults. Figure 7 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.
Figure 6 Jumper Settings for Ethernet Version 1
Figure 7 Jumper Settings for Ethernet Version 2 and IEEE 802.3
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 6 and
Figure 7) 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 6 or
Figure 7 (facing the component side of the card with the connectors at the bottom). Each connector
corresponds consecutively to a pin set.
H1099a
Ethernet connectors
LEDs
W1 W2 W3 W4 W5 W6
E0 E5
H1210a
W1 W2 W3 W4 W5 W6
Ethernet connectors
LEDs
E0 E5

10 Installing the CSC-MEC and CSC-C2MEC Multiport Ethernet Controller Cards
Installation Prerequisites
ciscoBus Configuration Considerations
Before installing the CSC-MEC in the card cage, ensure that you have the correct type of ciscoBus
controller installed (CSC-CCTL or CSC-CCTL2) and that the ciscoBus interface cards will be
placed in the correct slots per the slot priority requirements described in “Slot Priority,” on page 11.
ciscoBus Controller Compatibility
AllciscoBusinterfacecards, which are listed in Table3,containcard-specificfirmware(microcode),
which determines whether the card is compatible with the first- or second-generation ciscoBus
controller, as follows:
•ciscoBus cards with microcode versions earlier than 10.0 are compatible only with the
first-generation ciscoBus controller (CSC-CCTL, controller type 3.0).
•ciscoBus cards with Microcode Version 10.0 or later are compatible only with the
second-generation ciscoBus controller (CSC-CCTL2, controller type 6.0).
•The CSC-C2CTR and CSC-C2FCIT are compatible only with the CSC-CCTL2. The initial
release of both cards contains Microcode Version 10.0.
The C2 designator added to the name of a ciscoBus interface card indicates that the card is running
Microcode Version 10.0 or later and is, therefore, compatible with the CSC-CCTL2. With the
exception of a revision 5.0 CSC-MEC card (see “Note” following), the first- and second-generation
ciscoBus interface cards are otherwise the same. For example, you can upgrade a Revision 5.1
CSC-MEC to a CSC-C2MEC by replacing the microcode with Version 10.0 or later. When you
upgrade the microcode on the CSC-MEC card to Version 10.0, the name of the card also changes
from CSC-MEC to CSC-C2MEC to indicate that it is CCTL2-compatible. When you replace a
CSC-CCTL ciscoBus controller with a CSC-CCTL2 ciscoBus controller, you must upgrade the
microcode on all ciscoBus interface cards to Microcode Version 10.0 or later and replace the
CSC-CCTL with a CSC-CCTL2.
Note Only Revision 5.1 or later CSC-MEC cards can be upgraded to a CSC-C2MEC. If you have
a Revision 5.0 CSC-MEC, contact a customer service representative.
You can display a description of the current ciscoBus controller and ciscoBus interface cards with
the EXEC command show controller cbus, an example of which is described on page 8.
Table 3 ciscoBus Interface Card Compatibility Requirements
1. The C2 designator indicates that these cards are compatible with the CSC-CCTL2 ciscoBus
controller card. The CSC-C2CTR and CSC-C2FCIT cards are shipped (by default) with
Microcode Version 10.0 or later.
2. Only CSC-MEC card revision 5.1 or later is compatible with the CSC-CCTL2
CCTL Controller CCTL2 Controller Description
CSC-CCTL CSC-CCTL2 ciscoBus controller
CSC-FCI CSC-C2FCI1Fiber Distributed Data Interface (FDDI)
– CSC-C2FCIT FDDI with translational bridging
CSC-HSCI CSC-C2HSCI High-Speed Serial Interface (HSSI)
– CSC-C2CTR ciscoBus Token Ring interface, 4/16Mbps
CSC-MEC CSC-C2MEC2Multiport Ethernet Controller interface