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Hardware Description

This chapter provides an overview of the Cisco 6200 advanced digital subscriber line access
multiplexer (DSLAM) and describes the system's hardware components. The chapter is arranged as
follows:
Cisco DSL Product Family on page 1-1
Cisco 6200 Chassis on page 1-2
Warning
Warnings."
1.1 Cisco DSL Product Family
The Cisco 6200 is part of a family of digital subscriber line (DSL) products that provide end-to-end
service, carrying data between the subscriber's home or office, the telephone central office (CO), and
the networks beyond. The Cisco 6000 family includes the following members:
The Cisco 6200 DSLAM is a CO-grade multiplexer that supports up to 80 asymmetric digital
subscriber line (ADSL) ports. The Cisco 6200 sends and receives subscriber data (often Internet
service) over existing copper telephone lines, concentrating all traffic onto a single high-speed
trunk for transport to the Internet or the enterprise intranet.
ADSL customer premises equipment (CPE) devices, which reside at the subscriber site
connected to PCs or routers, modulate data so that it can travel over telephone lines to the Cisco
6200 DSLAM at the CO. CPE devices in the Cisco DSL product family include the Cisco 675
and the Cisco 605.
The Cisco 6200 Manager is an SNMP-based element management application that provides
configuration, monitoring, and management support. The Cisco 6200 Manager offers a graphical
user interface and runs under Windows NT 4.0 and higher. A separate console interface to the
Cisco 6200 DSLAM provides command line access to all management services.
ADSL plain old telephone service (POTS) splitters, or voice filters, located both at the subscriber
premises and at the CO, support simultaneous voice and data transmission. (If a subscriber is
using a telephone line for data only, the POTS splitter connection is not required.)
For translations of the safety warnings in this chapter, see Appendix C, "Translated Safety
C H A P T E R
1
1-1

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   Summary of Contents for Cisco 6200

  • Page 1: Table Of Contents

    Warnings.” 1.1 Cisco DSL Product Family The Cisco 6200 is part of a family of digital subscriber line (DSL) products that provide end-to-end service, carrying data between the subscriber’s home or office, the telephone central office (CO), and the networks beyond. The Cisco 6000 family includes the following members: •...

  • Page 2: 1.2 Cisco 6200 Chassis

    Slots 5 to 14: Hold up to ten subscriber line cards (SLCs). All Cisco 6200 cards can be installed and removed while the rest of the system continues to operate. (However, the system cannot pass data if the NTC is removed.) The NTC, MPC, and SLCs are described later in this chapter.

  • Page 3

    78-5296-02 10/02/98 Hardware Description Figure 1-1 Cisco 6200 Chassis, Front View OC3-SM 8CAP POWER 8CAP 8CAP POWER 8CAP 8CAP 8CAP 8CAP READY 8CAP 8CAP POWER READY POWER 8CAP POWER POWER POWER POWER SRVC POWER READY POWER ACTIVE READY POWER READY...

  • Page 4

    Hardware Description 78-5296-02 10/02/98 Figure 1-2 Cisco 6200 Chassis, Rear View Dangler cables Auxiliary port for subscriber connector traffic Alarm relay connector Primary (A) and Secondary (B) H-Buses The backplane’s primary and secondary H-buses (horizontal buses) link the MPC, NTC, and SLCs.

  • Page 5

    • Use the Cisco 6200 Manager. (See the User Guide for the Cisco 6200 Manager for instructions.) • Use the command show dsl alarms. (See Chapter 7, “Troubleshooting,” for more information on this command.)

  • Page 6: Fan Tray

    PEM, or to installing two PEMs in a chassis with one power source. The PEMs reside at the top of the Cisco 6200 chassis, and they are installed and accessed from the front. DC power (–48V) enters the chassis through screw terminals on the rear panel of the chassis.

  • Page 7

    1.2.5 Cooling Vents The cooling vents are located on the sides, front, and back of the Cisco 6200 chassis, as shown in Figure 1-4. Air flows in at the bottom of the chassis, and flows out at the top. Do not obstruct the intake and exhaust vents in any way.

  • Page 8

    Hardware Description 78-5296-02 10/02/98 Table 1-1 Cisco 6200 DSLAM Specifications Specification Description Components 14-slot card compartment Backplane Fan compartment Power module compartment Power input Dual inputs, each –48 VDC Tested voltages: –48V and –57V Tolerance limits: –42V to –57V Maximum input current: 23A...

  • Page 9: Network Trunk Cards (ntcs)

    1 of the Cisco 6200 chassis. 1.3.1 What is the NTC OC-3? The NTC is a service interface module that concentrates the data traffic from all Cisco 6200 subscriber ports and connects the node to a single trunk line from the service-providing ATM network.

  • Page 10

    (see Figure 1-6) includes the fixtures discussed in the following paragraphs. OC-3c Trunk Port The dual SC connectors (one for transmitting, one for receiving) for the Cisco 6200 network trunk port are recessed into the OC-3 NTC faceplate to prevent the cables from protruding too far outside the faceplate.

  • Page 11

    NTC OC-3 Faceplates OC3-SM OC3-MM POWER POWER READY READY Card status LEDs PRIME PRIME OC-3c port Transmit and receive LEDs Reset switch LED Indicators Table 1-3 describes the LEDs on the faceplate of the OC-3 NTC. Cisco 6200 User Guide 1-11...

  • Page 12

    One or more of the following fault conditions have been reported on the receive side: PAIS, LOST, Signal Label Mismatch. It is not possible to determine with a high degree of certainty the operational state of the link when one of these conditions is present. 1-12 Cisco 6200 User Guide...

  • Page 13

    Power consumption 1.3.4 What is the NTC STM-1? The NTC STM-1 is a service interface module that concentrates the data traffic from all Cisco 6200 subscriber ports and connects the node to a single trunk line from the service-providing ATM network.

  • Page 14

    (VCIs) 33 through 63. VCIs 0 through 31 are reserved for control traffic. All of these VCs use virtual path identifier (VPI) 0. See the Cisco 6200 User Guide for instructions on using the command show dsl vcmap to display the VCIs assigned to a particular slot or port.

  • Page 15

    (see Figure 1-8) include the fixtures discussed in the following paragraphs. Trunk Port The dual SC connectors (one for transmitting, one for receiving) for the Cisco 6200 network trunk port are recessed into the NTC faceplate to prevent the cables from protruding too far outside the faceplate.

  • Page 16

    NTC STM-1 Faceplates STM1-SM STM1-MM POWER POWER READY READY Card status LEDs PRIME PRIME STM-1 port Transmit and receive LEDs Reset switch LED Indicators Table 1-5 describes the LEDs on the faceplate of the NTC STM-1. 1-16 Cisco 6200 User Guide...

  • Page 17

    The NTC is experiencing no problems. Yellow The NTC failed its power-on self test; it has a hardware problem. Refer to the Cisco 6200 User Guide for troubleshooting instructions. The NTC is either initializing or in test mode. PRIME Green This NTC is active and is using the primary bus.

  • Page 18: Management Processor Card (mpc)

    • The Cisco IOS command line interface (CLI) for configuration and monitoring • An SNMP agent for communicating between the Cisco 6200 and the PC running the Cisco 6200 Manager software • Alarm contacts and environmental monitoring of key system resources •...

  • Page 19: Physical Description

    10/02/98 Hardware Description The MPC runs a version of Cisco IOS software that is designed for DSL multiplexing. At startup, the MPC loads program software and configuration data from NVRAM, from a server on the network, or from a Flash card in one of its PCMCIA slots. The MPC then provides boot images to the line cards.

  • Page 20: Console Port

    The system is experiencing a major alarm. A major alarm affects several subscribers. (A total SLC failure, which affects all of the subscribers connected to that card, causes a major alarm.) Use the Cisco 6200 Manager or the command line interface to identify the problem.

  • Page 21

    • 8MB of Flash memory (to store boot image) • 2 PCMCIA Flash card slots Dimensions 1.5 x 15.75 x 9.75 in (width x height x depth) (3.8 x 40.0 x 24.8 cm) Weight 2.5 lb (1.13 kg) Power consumption 36.5W Cisco 6200 User Guide 1-21...

  • Page 22: Subscriber Line Card (slc)

    This section describes the CAP and DMT versions of the subscriber line card (SLC). A Cisco 6200 chassis can hold up to 10 SLC modules. All the SLCs in a Cisco 6200 chassis should be of the same type. The mixture of CAP and Note DMT cards in a single chassis is not supported.

  • Page 23

    Figure 1-10 SLC 8CAP Operation Public telephone network Cell filter ADSL Port 1 modem POTS Contention splitter transceiver arbitration POTS splitter Port 2 Port 3 Cisco Port 8 6200 Cisco 6200 User Guide 1-23...

  • Page 24

    10/02/98 1.5.2 SLC 8CAP: Physical Description Up to 10 SLCs can be installed in a Cisco 6200 cabinet. The cabinet slots assigned to the SLCs are slot 5 through slot 14. The CAP SLC’s faceplate is labeled SCL 8CAP. The faceplate (Figure 1-11) includes the fixtures discussed in the following paragraphs.

  • Page 25

    • The SLC is initializing. • The SLC has a hardware problem. If the READY LED is off for an extended period when the POWER LED is on, see the Cisco 6200 User Guide for instructions on troubleshooting the SLC.

  • Page 26

    • 512 kbyte Flash boot memory • Globespan CAP chip set • Cisco ATM framer Dimensions 1.17 x 15.75 x 9.75 in (width x height x depth) (3.0 x 40.0 x 24.8 cm) Weight 3 lb (1.36 kg) Power consumption 1-26 Cisco 6200 User Guide...

  • Page 27

    The eight-port DMT version of the SLC (SLC 8DMT) is a hot-swappable line module that provides data communication between the Cisco 6200 node and up to eight subscribers. Modems on the SLC 8DMT use discrete multitone (DMT) modulation, a common method for encoding asymmetric digital subscriber line (ADSL) transmissions.

  • Page 28

    DMT-modulated signal. Then the SLC channel contends with the other SLC channels for the upstream data bus. Two priority levels are available. For the first Cisco 6200 release, only UBR service is available. The SLC will ensure fair access among all cells of the same priority.

  • Page 29

    Near end loss of cell delineation (LOCD) 1.5.5 SLC 8DMT: Physical Description Up to ten SLCs can be installed in a Cisco 6200 cabinet. The slots assigned to the SLCs are slot 5 through slot 14. The card’s faceplate is labeled SLC 8DMT. The faceplate (Figure 1-13) includes a reset switch and LED indicators.

  • Page 30: Reset Switch

    Reset switch Reset Switch The reset switch is recessed behind the faceplate to avoid accidental activation. It is not for customer use. LED Indicators Table 1-11 describes the LEDs on the faceplate of the SLC. 1-30 Cisco 6200 User Guide...

  • Page 31

    • The SLC is initializing. • The SLC has a hardware problem. If the READY LED is off for an extended period when the POWER LED is on, see the Cisco 6200 User Guide for instructions on troubleshooting the SLC.

  • Page 32: Cisco 6200 User Guide

    • ADI DMT chip set • Cisco ATM framer Dimensions 1.17 x 15.75 x 9.75 in (width x height x depth) (3.0 x 40.0 x 24.8 cm) Weight 3 lb (1.36 kg) Power consumption 79.2 W 1-32 Cisco 6200 User Guide...

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