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C H A P T E R

Cisco 6200 User Guide

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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

Network Trunk Cards (NTCs) on page 1-9

Management Processor Card (MPC) on page 1-18

Subscriber Line Card (SLC) on page 1-22

Warning

For translations of the safety warnings in this chapter, see Appendix C, “Translated Safety

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.)

Summary of Contents for 6200

Page 1: ...scriber 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 te...

Page 2: ... module compartment a fan compartment a power module compartment a backplane and I O cabling Figure 1 1 shows the front of the chassis Figure 1 2 shows the back 1 2 1 Module Compartment The module compartment holds all circuitry that relates to Cisco 6200 operation The module compartment includes 14 slots that hold the modules cards Slot 1 Holds the network trunk card NTC Slot 2 Holds the manageme...

Page 3: ...OC3 SM READY SRVC PROT SLC 8CAP POWER READY PRIME SEC PORTS 1 2 3 4 5 6 7 0 SLC 8CAP POWER READY PRIME SEC PORTS 1 2 3 4 5 6 7 0 SLC 8CAP POWER READY PRIME SEC PORTS 1 2 3 4 5 6 7 0 SLC 8CAP POWER READY PRIME SEC PORTS 1 2 3 4 5 6 7 0 SLC 8CAP POWER READY PRIME SEC PORTS 1 2 3 4 5 6 7 0 SLC 8CAP POWER READY PRIME SEC PORTS 1 2 3 4 5 6 7 0 SLC 8CAP POWER READY PRIME SEC PORTS 1 2 3 4 5 6 7 0 SLC 8C...

Page 4: ...t Each H bus has two parts A downstream component broadcasts all cells received from the NTC interface to each SLC Logic on the SLC filters and directs cells destined for each port An upstream component provides a contention mechanism for cells received from subscriber ports to be funneled into the upstream NTC path Ethernet Management Bus A 10Base2 type Ethernet bus in the backplane carries inter...

Page 5: ...the CO The alarm device uses a bell light or other signal to alert CO support personnel of the change in status The alarm relay transmits audible and visual alarms on separate circuits Alarms transmitted through J39 are also communicated by all of the following methods Alarm LEDs labeled Critical Major and Minor on the MPC Some alarms also affect the TD and RD LEDs on the NTC Event messages on the...

Page 6: ...eratures inside the chassis plus an air filter The filter should be removed and cleaned periodically Refer to Chapter 6 Preventive Maintenance for complete information on cleaning the air filter Caution The Cisco 6200 cooling fans must run continuously The system may suffer thermal damage if the fans stop for more than 10 minutes At ambient temperatures above 104 F 40 C thermal damage may occur so...

Page 7: ...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 Figure 1 4 Air Flow Through Intake and Exhaust Vents 1 2 6 DSLAM Specifications Table 1 1 lists the specifications of the Cisco 6200 DSLAM Table 1 2 lists standards and certifications for ...

Page 8: ... entry modules covers and dangler cables 48 lb 21 7 kg Weight fully loaded1 82 5 lb 37 4 kg Operating temperatures Short term 23 to 131 F 5 to 55 C 3 Long term 32 to 104 F 0 to 40 C 3 The chassis can operate safely at short term operating temperatures only if all of the fans are working properly If a fan fails in a chassis that is experiencing an ambient temperature above 104 F 40 C thermal damage...

Page 9: ...k to the service provider via ATM on the OC 3c physical layer The Cisco 6200 uses a fixed mapping of permanent virtual channels PVCs between trunk and subscriber ports This means that no configuration of these circuits is required Thirty one PVCs link each subscriber port to the trunk port on the NTC These subscriber traffic PVCs are assigned virtual channel identifiers VCIs 33 through 63 VCIs 0 t...

Page 10: ... the bus This circuit inserts idle cells when a full data cell is not yet ready for transmission 1 3 2 NTC OC 3 Physical Description The NTC resides in slot 1 the left most slot as you face the front of the chassis Each OC 3 NTC faceplate is marked NTC OC3 SM single mode or NTC OC3 MM multimode The faceplate see Figure 1 6 includes the fixtures discussed in the following paragraphs OC 3c Trunk Por...

Page 11: ...t the card from the backplane before connecting or disconnecting optical cables Always keep the protective cap on the optic connector when the connector is not in use Never look into an optical cable or connector Reset Switch The reset switch is recessed behind the faceplate to avoid accidental disturbance It is not for customer use Figure 1 6 NTC OC 3 Faceplates LED Indicators Table 1 3 describes...

Page 12: ... TD Green Yellow Red None of the fault conditions that cause the LED to turn yellow or turn off have been reported The LRFI fault condition has been reported on the transmit side The PRFI fault condition has been reported on the transmit side RD Green Yellow Red None of the fault conditions that cause the LED to turn yellow or turn off have been reported One or more of the following fault conditio...

Page 13: ... distances up to 15 kilometers or 9 2 miles require laser driven single mode fiber In the downstream direction the NTC STM 1 accepts ATM cells at the SDH rate 155 52 Mbps and adapts these cells to the Cisco 6200 internal bus Specification Description External interface One SONET STS 3c 155 Mbps Single mode intermediate reach and multimode OC 3c versions available Connector type SC Fiber types Sing...

Page 14: ...ATM cell counts which are accessible through the 6200 Management Information Base MIB These cell count include Number of nonidle cells transmitted upstream Number of nonidle downstream cells received with good or correctable header checksums Number of downstream cells received with uncorrectable header checksums The NTC STM 1 provides bidirectional adaptation between serial ATM cells within the ST...

Page 15: ...k 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 Warning Class 1 laser product Warning Because invisible laser radiation may be emitted from the aperture of the port when no cable is connected avoid exposure to laser radiation and do not ...

Page 16: ...8 NTC STM 1 Faceplates LED Indicators Table 1 5 describes the LEDs on the faceplate of the NTC STM 1 POWER A C T I V E NTC STM1 SM READY PRIME SEC A TD RD POWER A C T I V E NTC STM1 MM READY PRIME SEC A TD RD 14271 Card status LEDs Transmit and receive LEDs Reset switch STM 1 port ...

Page 17: ... 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 SEC Green This NTC is active and is using the secondary bus Redundant systems only TD Green Yellow None of the fault conditions that cause the LED to turn yellow or turn off have been reported The LRFI fault condition has been reported on the trans...

Page 18: ... PCMCIA Flash slots for storage of software images and configuration data Specification Description External interface One SDH STM 1 155 Mbps Single mode intermediate reach and multimode STM 1 versions available Connector type SC Fiber types Single mode up to 15 km Multimode up to 2 km Average transmitted power Single mode 11 5 dBm Multimode 17 dBm Average received power Single mode 28 to 8 dBm Mu...

Page 19: ... SNMP communication with the Cisco 6200 Manager and critical major and minor alarm signals 1 4 2 Physical Description The MPC resides in slot 2 The MPC faceplate see Figure 1 9 includes the fixtures discussed in the following paragraphs Figure 1 9 MPC Faceplate ACO Switch The alarm cut off ACO switch is a pushbutton located near the top of the MPC Press the switch to turn off an audible alarm For ...

Page 20: ...ower on self test it has a hardware problem Refer to Chapter 7 Troubleshooting The MPC is either initializing or in test mode ACTIVE Green This MPC is active CRITICAL Red The system is experiencing a critical alarm A critical alarm affects many or all of the subscribers connected to the node Failure of the NTC or the trunk can cause a critical alarm Use the Cisco 6200 Manager or the command line i...

Page 21: ...ions Specification Description External Interfaces EIA TIA 232 console port 10BaseT Ethernet management port Internal Hardware MIPS RV4640 processor Galileo GT64011 memory management unit 16 MB of DRAM 8MB of Flash memory to store boot image 2 PCMCIA Flash card slots Dimensions width x height x depth 1 5 x 15 75 x 9 75 in 3 8 x 40 0 x 24 8 cm Weight 2 5 lb 1 13 kg Power consumption 36 5W ...

Page 22: ...ls from the Cisco 6200 backplane bus The cell filter discards cells whose virtual path virtual channel IDs VPI VCIs do not pertain to this subscriber s channel Each port has a fixed set of 31 VCIs which are permanently assigned to VCIs on the NTC The traffic controller buffers cells Then the CAP transceiver transmits the outbound cells The SLC sends the cells out to an external POTS splitter which...

Page 23: ...trying to train indefinitely until it is successful Statistics The SLC gathers signal quality statistics for network management purposes It sends this information to the management system via the master SNMP agent The SLC reports each of the following statistics to the management system for both upstream and downstream traffic Number of nonidle cells transmitted downstream Number of nonidle upstre...

Page 24: ...aceplate is labeled SCL 8CAP The faceplate Figure 1 11 includes the fixtures discussed in the following paragraphs Reset Switch The reset switch is recessed behind the faceplate to avoid accidental activation It is not for customer use LED Indicators Table 1 9 describes the LEDs on the faceplate of the SLC Figure 1 11 SLC 8CAP Faceplate 11947 SLC 8CAP PORTS 1 2 3 4 5 6 7 POWER READY PRIME SEC 0 Ca...

Page 25: ... to move information across the backplane SEC Green The SLC is using the secondary B bus to move information across the backplane Redundant systems only Ports 0 to 7 Green The following conditions exist The port is receiving the upstream heartbeat message regularly The heartbeat message indicates the CAP PIM has HEC alignment in the downstream direction The SLC has HEC alignment in the upstream di...

Page 26: ... media Unshielded twisted pair copper wire Loop modulation method ADSL with CAP line code Layer 2 format ATM service and subscriber side end to end ATM virtual circuits supported Up to 31 per subscriber numbered 33 through 63 VPI 0 Data channel frequencies Upstream 30 to 200 kHz Downstream 240 kHz to 1 5 MHz Internal hardware Motorola MC68360 1 Mbyte Flash memory 512 kbyte Flash boot memory Globes...

Page 27: ...ream and downstream passband channels for subscriber data Baseband plain old telephone service POTS is unused by the SLC voice and data are added by the external POTS splitter How the SLC 8DMT Handles Traffic In the downstream direction the SLC receives ATM cells from the Cisco 6200 backplane bus The cell filter discards cells whose virtual path virtual channel IDs VPI VCIs do not pertain to a par...

Page 28: ...d explicit modes on the same circuit using one mode for upstream traffic and the other for downstream traffic Rates available for downstream traffic range from 32 kbps to 8 032 Mbps in increments of 32 kb 32 kbps 64 kbps 96 kbps 128 kbps and so on Rates available for upstream traffic start at 32 kbps and increase in 32 kb increments to a maximum upstream rate of 864 kbps The modems on the SLC 8DMT...

Page 29: ...y errored frame is observed both upstream and downstream In addition the SLC 8DMT reports the following fault indications Far end LPR Near end LOS Near end LOF 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 facepl...

Page 30: ...e 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 13067 SLC 8DMT PORTS 1 2 3 4 5 6 7 POWER READY PRIME SEC 0 Card status LEDs Port status LEDs Reset switch ...

Page 31: ...the backplane SEC Green The SLC is using the secondary B bus to move information across the backplane Redundant systems only Ports 0 to 7 Green The following conditions exist The port is receiving good signal levels no loss of signal or LOS from the CPE The port has frame alignment with the far end CPE no loss of frame LOF or severely errored frames SEC The SLC has HEC alignment in the upstream di...

Page 32: ...edia Unshielded twisted pair copper wire Loop modulation method ADSL with DMT line code Layer 2 format ATM service and subscriber side end to end ATM virtual circuits supported Up to 31 per subscriber numbered 33 through 63 VPI 0 Data channel frequencies Upstream 25 875 to 138 kHz Downstream 138 kHz to 1 104 MHz Internal hardware Motorola MC68360 1 Mbyte Flash memory 512 kbyte Flash boot memory AD...

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