Manuale d’uso / di manutenzione del prodotto 6200 del fabbricante Cisco Systems
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CHAPTER Cisco 6200 User Guide 1-1 1 Hardw are Descr iption This chapter provides an o vervie w of the Cisco 6200 advanced digital subscriber line access multiplex er (DSLAM) and describes the system’ s hardware components.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-2 The Cisco DSL family also includes a Frame Relay IDSL multiplex er , a service selection gatew ay , the Cisco 605 card, the Cisco 6100 DSLAM, and an A TM switch to aggregate Cisco 6200 traf fic.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-3 Figure 1-1 Cisco 6200 Chassis, Front Vie w 1.2.2 Bac kplane Located behind the module compartment, the backplane provides the follo.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-4 Figure 1-2 Cisco 6200 Chassis, Rear View Primar y (A) and Secondar y (B) H-Buses The backplane’ s primary and secondary H-buses (horizontal buses) link the MPC, NTC, and SLCs. In this release, the primary bus carries all traf fic.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-5 Connections to PO TS Splitters or T elephone Lines On the inner surface of the backplane, the upper and lo wer SLC connectors connect the SLC in the corresponding slot (5 to 14) with unshielded twisted pair (UTP) lines.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-6 A uxiliar y P or t J40, a 9-pin female connector on the Cisco 6200 backplane, is an EIA/TIA-232 (RS-232) serial port connecting to the management processor card (MPC).
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-7 The following fixtures are present on the front panel of each PEM: • A green LED that comes on to indicate that –48 VDC power .
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-8 T able 1-1 Cisco 6200 DSLAM Specifications T able 1-2 Standards and Certifications Specification Description Components 14-slot .
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-9 1.3 Netw ork T runk Car ds (NTCs) This section describes the OC-3c and STM-1 network trunk cards (NTCs).
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-10 Figure 1-5 NTC OC-3 Application The optical interface performs the optical-to-electrical and electrical-to-optical con versions. Its other tasks include clock recov ery , o verhead processing, cell delineation, and diagnostic information retriev al.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-11 The fiber optic communication channels in the single-mode OC-3c card (NTC OC3-SM) operate with laser energy , which can be harmful, especially to the eyes. During normal operation this ener gy is confined to the cable and presents no danger .
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-12 T able 1-3 LEDs on the NTC OC-3 LED Color Condition Indicated PO WER Green The module is receiving po wer . READ Y Green Y ellow Off The NTC is experiencing no problems. The NTC failed its po wer-on self test; it has a hardware problem.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-13 1.3.3 NTC OC-3 Specifications T able 1-4 lists the physical and electrical specifications of the NTC.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-14 The NTC STM-1 also transmits upstream data back to the service provider via A TM on the STM-1 physical layer . The Cisco 6200 uses a fixed mapping of permanent virtual channels (PVCs) between trunk and subscriber ports.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-15 The upstream data transfer unit recei ves data via a 16-bit parallel input from the internal bus on the node’ s backplane.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-16 Figure 1-8 NTC STM-1 Faceplates LED Indicators T able 1-5 describes the LEDs on the faceplate of the NTC STM-1.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-17 T able 1-5 LEDs on the NTC STM-1 1.3.6 NTC STM-1 Specifications T able 1-6 lists the physical and electrical specifications of the NTC STM-1. LED Color Condition Indicated PO WER Green The module is receiving po wer .
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-18 T able 1-6 NTC STM-1 Specifications 1.4 Management Pr ocessor Card (MPC) The Cisco 6200 is controlled and managed by the MPC. 1.4.1 Functional Description The MPC performs management and storage tasks for the Cisco 6200 DSLAM.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-19 The MPC runs a version of Cisco IOS software that is designed for DSL multiple xing. 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.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-20 Console P or t The console port on the MPC is a serial EIA/TIA-232 port with an RJ-45 connector . See Appendix A, “Pin Assignments, ” for pinouts. PCMCIA Slots and Ejection Buttons The MPC provides two slots for PCMCIA Flash memory cards.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-21 1.4.3 MPC Specifications T able 1-8 lists the physical and electrical specifications of the MPC.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-22 1.5 Subscriber Line Car d (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. Note All the SLCs in a Cisco 6200 chassis should be of the same type.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-23 In the do wnstream direction, 11 rates are av ailable ranging from 640 kbps to 7.168 Mbps. In the upstream direction, 9 rates are av ailable, ranging from 91 kbps to 1.088 Mbps. The modems on the CAP SLC train in sequence, first downstream, then upstream.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-24 1.5.2 SLC 8CAP: Ph ysical 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 .
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-25 T able 1-9 SLC 8CAP LEDs LED Color Condition Indicated PO WER Green The SLC is receiving po wer . READ Y Green Y ellow Off The SLC is experiencing no problems. At least one port on the SLC is in line test mode.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-26 1.5.3 SLC 8CAP Specifications T able 1-10 lists the physical and electrical specifications of the CAP SLC (SLC 8CAP).
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-27 1.5.4 What is the SLC 8DMT? The eight-port DMT version of the SLC (SLC 8DMT) is a hot-swappable line module that pro vides data communication between the Cisco 6200 node and up to eight subscribers.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-28 In the upstream direction, the SLC recei ves ADSL signals from a PO TS splitter and demodulates the DMT -modulated signal. Then the SLC channel contends with the other SLC channels for the upstream data bus.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-29 • Number of upstream cells receiv ed with in valid header checksum • Number of errored seconds (this is the number of seconds .
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-30 Figure 1-13 SLC 8DMT Faceplate Reset Switch The reset switch is recessed behind the faceplate to a void accidental acti vation. It is not for customer use. LED Indicators T able 1-11 describes the LEDs on the faceplate of the SLC.
78-5296-02 10/02/98 Hardware Description 1 Cisco 6200 User Guide 1-31 T able 1-11 SLC 8DMT LEDs LED Color Condition Indicated PO WER Green The SLC is receiving po wer . READ Y Green Y ellow Off The SLC is experiencing no problems. At least one port on the SLC is in line test mode.
1 Hardware Description 78-5296-02 10/02/98 Cisco 6200 User Guide 1-32 1.5.6 SLC 8DMT Specifications T able 1-12 lists the physical and electrical specifications of the SLC 8DMT . T able 1-12 SLC 8DMT Specifications Specification Description Subscriber ports 8 per card T ransmission speeds Downstream: up to 8.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Cisco Systems 6200 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Cisco Systems 6200 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cisco Systems 6200 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cisco Systems 6200 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cisco Systems 6200, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Cisco Systems 6200.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Cisco Systems 6200. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cisco Systems 6200 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
