DOCSIS Devices Supports Management Module SM-DCS1000

Transcription

1 DOCSIS Devices Titlepage Supports Management Module SM-DCS1000 Device Management

2 Copyright Notice Document Copyright 2002-present by Aprisma Management Technologies, Inc. All rights reserved worldwide. Use, duplication, or disclosure by the United States government is subject to the restrictions set forth in DFARS (c)(1)(ii) and FAR Liability Disclaimer Aprisma Management Technologies, Inc. ( Aprisma ) reserves the right to make changes in specifications and other information contained in this document without prior notice. In all cases, the reader should contact Aprisma to inquire if any changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice. IN NO EVENT SHALL APRISMA, ITS EMPLOYEES, OFFICERS, DIRECTORS, AGENTS, OR AFFILIATES BE LIABLE FOR ANY INCIDENTAL, INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT, EVEN IF APRISMA HAS BEEN ADVISED OF, HAS KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES. Trademark, Service Mark, and Logo Information SPECTRUM, IMT, and the SPECTRUM IMT/VNM logo are registered trademarks of Aprisma Management Technologies, Inc., or its affiliates. APRISMA, APRISMA MANAGEMENT TECHNOLOGIES, the APRISMA MANAGEMENT TECHNOLOGIES logo, MANAGE WHAT MATTERS, DCM, VNM, SpectroGRAPH, SpectroSERVER, Inductive Modeling Technology, Device Communications Manager, SPECTRUM Security Manager, and Virtual Network Machine are unregistered trademarks of Aprisma Management Technologies, Inc., or its affiliates. For a complete list of Aprisma trademarks, service marks, and trade names, go to All referenced trademarks, service marks, and trade names identified in this document, whether registered or unregistered, are the intellectual property of their respective owners. No rights are granted by Aprisma Management Technologies, Inc., to use such marks, whether by implication, estoppel, or otherwise. If you have comments or concerns about trademark or copyright references, please send an to spectrum-docs@aprisma.com; we will do our best to help. Restricted Rights Notice (Applicable to licenses to the United States government only.) This software and/or user documentation is/are provided with RESTRICTED AND LIMITED RIGHTS. Use, duplication, or disclosure by the government is subject to restrictions as set forth in FAR (June 1987) Alternate III(g)(3) (June 1987), FAR (June 1987), or DFARS (c)(1)(ii) (June 1988), and/or in similar or successor clauses in the FAR or DFARS, or in the DOD or NASA FAR Supplement, as applicable. Contractor/manufacturer is Aprisma Management Technologies, Inc. In the event the government seeks to obtain the software pursuant to standard commercial practice, this software agreement, instead of the noted regulatory clauses, shall control the terms of the government's license. Virus Disclaimer Aprisma makes no representations or warranties to the effect that the licensed software is virus-free. Aprisma has tested its software with current virus-checking technologies. However, because no antivirus system is 100 percent effective, we strongly recommend that you write-protect the licensed software and verify (with an antivirus system in which you have confidence) that the licensed software, prior to installation, is virus-free. Contact Information Aprisma Management Technologies, Inc. 273 Corporate Drive Portsmouth, NH Phone: U.S. toll-free: Web site: Device Management Page 2 DOCSIS Devices

3 Contents INTRODUCTION 4 Purpose and Scope...4 Required Reading...5 Supported Devices...5 The SPECTRUM Model...5 TASKS 7 DOCSISCMTS MODEL TYPE 9 Device Views...10 Interface Icons...11 Sub-Interfaces Button...12 Icon Subviews Menu...12 Secondary Address Panel...13 Device Topology Views...13 Interface Device Topology View...14 Sub-Interfaces Topology View...15 Application Views...16 Main Application View...16 Supported Applications...17 Common Applications...17 Device-Specific MIBs...18 Performance Views...20 Configuration Views...21 Device Configuration View...21 DOCSISCM MODEL TYPE 23 Configuration View Downstream Channel Table Signal Quality Table IF Status Table CM Service Table Service Level Purchase Table MODEL INFORMATION VIEW 29 INDEX 30 Device Management Page 3 DOCSIS Devices

4 Introduction This section introduces the SPECTRUM Device Management documentation for cable modems and cable modem termination systems that comply with the Data Over Cable System Interface Specification (DOCSIS). This introduction to the Device Management documentation for DOCSIS-supported devices contains the following information: Purpose and Scope Required Reading (Page 5) Supported Devices (Page 5) The SPECTRUM Model (Page 5) Purpose and Scope Use this document as a guide for managing the devices on Page 5 with SPECTRUM management module SM-DCS1000. SM-DCS1000 provides device management support for Cable Modems (CM) and Cable Modem Termination Systems (CMTS) that comply with the Data Over Cable System Interface Specification (DOCSIS). Note: Throughout this document, the abbreviation CM refers to Cable Modem and CMTS refers to Cable Modem Termination System. Information specific to SM-DCS1000 is what is primarily included in this document. For general information about device management using SPECTRUM and explanations of SPECTRUM functionality and navigation techniques, refer to the topics listed under Required Reading (Page 5). Device Management Page 4 DOCSIS Devices

5 Introduction Required Reading Before using this document, you must understand SPECTRUM s features, functions, and navigation techniques as described in the following documents: Getting Started with SPECTRUM for Operators Getting Started with SPECTRUM for Administrators How to Manage Your Network with SPECTRUM SPECTRUM Views SPECTRUM Menus SPECTRUM Icons SPECTRUM Software Release Notice Supported Devices SPECTRUM management module SM-DCS1000 currently lets you model DOCSIS 1.0/1.1 compliant devices. This includes any vendor s Cable Modem or Cable Modem Termination Station that is DOCSIS 1.0 or 1.1 certified. The SPECTRUM Model Required Reading The SM-DCS1000 management module lets you access MIB objects defined in the Internet Engineering Task Force (IETF) IP Over Cable Data Networks (IPCDN) working group for CM and CMTS devices. The DOCSIS Devices management module includes two device model types, DocsisCMTS, (Page 9) which supports CMTSs and DocsisCM, (Page 23) which supports CMs. Note: When migrating from SPECTRUM version to and later, the GnCableModem model type is replaced by the DocsisCM model type. The DocsisCM model type contacts the device at three times the polling interval. See Page 24 for more information. Device Management Page 5 DOCSIS Devices

6 Introduction The CMTS device models work with SPECTRUM AutoDiscovery to create models that match the type of device. DOCSIS CMs can be modeled only by type via population servers and scripts and should be modeled only from within a Broadband Service Container (BbSrvContainer). See the Modeling Gateway Toolkit Guide, the Broadband Service Containers document, and the Getting Started with SPECTRUM s Cable Broadband Solution document for more information. Model Name CMTS CMTS Figure 1: Large Device icon appears in Device Topology and Device Interface views The SPECTRUM Model CMTS Device Icons Small Device icon appears in Topology and Applications views Model Name CMTS CMTS Note: DOCSIS applications for CMTSs are described in the DOCSIS Applications document. These applications let you access information concerning all of the incorporated MIB objects. Small icon only Figure 2: CM Icon Model Name The Device and Application icons contain doubleclick zones and provide access to Icon Subviews menus that let you perform device management activities such as those listed in Tasks (Page 7). As Figure 1 and Figure 2 show, the appearance of the Device icons varies slightly depending on the kind of view it appears in. The rest of this document covering management module SM-DCS1000 is organized as follows: Tasks (Page 7) DocsisCM DocsisCMTS Model Type (Page 9) DocsisCM Model Type (Page 23) Model Information View (Page 29) Device Management Page 6 DOCSIS Devices

7 Tasks This section contains an alphabetical list of device management tasks, with each task providing one or more links to views that let you perform the task. Note: For CMTS-specific tasks, see the DOCSIS Applications document. For information about managing your broadband network with SPECTRUM, see Getting Started with SPECTRUM s Cable Broadband Solution. CM Downstream Channel Modulation (check/change) Downstream Channel Table (Page 25) CM Downstream Channel Signal Quality (check) Signal Quality Table (Page 25) Administrative Information (check) Model Information View (Page 29) Alarm Thresholds (set) Interface Icon Subviews Menu (Page 13) Configuration Information (check) Configuration Views (Page 21) CM Downstream Channel Bandwidth (check/change) Downstream Channel Table (Page 25) IF Status (check) IF Status Table (Page 26) IP Address (find/change) Secondary Address Panel (Page 13) CM Model Alarms (enable/disable) Configuration View (Page 24) Network Type (check) Network Type Label (Page 12) Device Management Page 7 DOCSIS Devices

8 Tasks Performance (check) Interface Icons (Page 11) Performance Views (Page 20) Port Status (check/change) IF Status Table (Page 26) Topology (check) Device Topology Views (Page 13) CM Tuner Frequency (check/change) Downstream Channel Table (Page 25) CM Upstream Service Queues (check) CM Service Table (Page 27) CM Upstream Bandwidth Guaranteed Minimum (check/change) Service Level Purchase Table (Page 28) Device Management Page 8 DOCSIS Devices

9 DocsisCMTS Model Type This section describes the views and subviews available for models of DOCSIS CMTS devices in SPECTRUM. Models of DOCSIS CMTSs (DocsisCMTS) work with SPECTRUM AutoDiscovery to create models that match the type of device. Table 1 lists the device-specific Icon Subviews menu options for the DocsisCMTS Device icon and the views and tables to which they provide access. Table 1: Option Device Icon Subviews Menu Accesses... Device Device Views (Page 10) DevTop Device Topology Views (Page 13) Application Application Views (Page 16) Configuration Configuration Views (Page 21) Fault Management Model Information Primary Application For further information refer to the How to Manage Your Network with SPECTRUM documentation. Model Information View (Page 29). Menu options that let you select the primary application; for example, Routing, MIB-II, etc. Device Management Page 9 DOCSIS Devices

10 DocsisCMTS Model Type Device Views Access: From the Icon Subviews menu for the Device icon, select Device. This view (Figure 3) uses icons and labels to represent the device and its components, such as modules, ports, and applications. The view provides dynamic configuration and performance information for each of the device s serial and network I/O ports, which are represented by Interface icons in the bottom panel of the view. The middle panel of the view displays a Device icon, which lets you monitor the device operation and access other device-specific views. Figure 3: SpectroGRAPH: Router Device: Model Name Device Views Interface Device View * File View Tools Bookmarks Help Model Name Contact Description Location Model Name CMTS CMTS 1 ON docscableupstream Cable Upstream Network Address Find Phy Addr Interface Description System Up Time Manufacturer Device Type Serial Number Device Icon Interface Options Panel 2 ON 3 ON docscabledownstream Cable Downstream ethernet ethernet0/0 0.0.FO:27.62.IC Interface Icons Model Name of type DocsisCMTS of Landscape : Primary Device Management Page 10 DOCSIS Devices

11 DocsisCMTS Model Type Interface Icons Figure 4 illustrates an Interface icon from the Interface Device view. Most of the informational labels on the icon also provide double-click access to other views, as explained in the following label descriptions. The Sub-Interfaces button only appears on certain Interface icons (see Sub- Interfaces Button (Page 12). a Figure 4: a b c d e f 1 Interface Icon ON Ethernet qaa1 0:0:1D:F:FD:B Interface Number Label IF Status Label Interface Type Label Network Type Label Physical Address Label IP Address Label Sub-Interfaces Button (Page 12) b c d e f Device Views Interface Number Label This label displays the interface (port) number. IF Status Label This label displays the current status of the interface for the primary application selected, e.g., Gen Rtr App or MIB-II App. Table 2 lists the possible label color representations. Note that the color of the label also depends on the interface s current Administrative Status, which you set in the Interface Configuration view. This view can be accessed by double-clicking the Interface Type label. Table 2: Color Interface Status Label Colors Operational Status Administrative Status Green up up ON Blue down down OFF Yellow down up OFF Label Text Red testing testing TEST Interface Type Label This label identifies the interface type (Ethernet, ATM, etc.). Double-click this label to access the Interface Configuration view. See the SPECTRUM Views documentation. Device Management Page 11 DOCSIS Devices

12 DocsisCMTS Model Type Network Type Label This label identifies the type of network the interface is connected to. Double-click the label to open the Model Information view for the interface. Physical Address Label This label displays the physical (MAC) address of the interface. Double-click the label to open the Interface Address Translation table, which crossreferences network addresses to MAC addresses for selected nodes between networks. Doubleclick any column entry to open an addressspecific Address Translation Table Information view. This view provides the same information as the corresponding row for the Interface Address Translation table, but lets you modify field values. IP Address Label This label displays the IP address for the interface. Double-click this label to open the Secondary Address Panel (Page 13), which lets you change the address and mask for the interface. Sub-Interfaces Button Device Views This button appears on an Interface icon when the interface model has sub-interfaces associated with it. Examples include a physical ATM interface with Permanent Virtual Circuits (PVCs) provisioned on it or a physical Frame Relay interface with DCL circuits on it. The endpoints of these multiplexed connections are modeled by SPECTRUM as sub-interfaces. Double-click this button to access the Sub-Interfaces Topology View (Page 15). Icon Subviews Menu Table 3 (Page 13) lists the device-specific Icon Subviews menu options for the Interface icons and the views and tables to which they provide access. These views and tables are also accessible via icon double-click zones (see Figure 4 on Page 11). Device Management Page 12 DOCSIS Devices

13 DocsisCMTS Model Type Detail Table 3: Option Sub-Interfaces Interface Icon Subviews Menu Opens the... Interface Detail view, which displays packet, error, and discard breakdown statistics (and pie charts) for the interface. Sub-Interfaces Topology View (Page 15) IF Configuration DocsisCM Model Type (Page 23). Sub-Layer Information Address Translation Table Sub-Layer Information view (see SPECTRUM Views. Address Translation Table (AT) (see SPECTRUM Views). Secondary Address Panel Secondary Address Panel (Page 13). Thresholds Model Information Interface Threshold view, which lets you set the on/off alarm thresholds for load, packet rate, error rate, and % discarded. Model Information View (Page 29). Secondary Address Panel Device Topology Views Access: From the Icon Subviews menu for the Interface icon in the Interface Device view, select Secondary Address Panel. This panel provides a table of IP addresses and masks obtained from the Address Translation table within the device s firmware. You can change the current address displayed in the IP Address field by selecting an entry from the table in this panel and clicking the Update button. Device Topology Views This section provides brief descriptions of the Device Topology views available for models of DOCSIS CMTS devices in SPECTRUM. Device Topology views show the connections between a modeled device and other network entities. There are two types of Device Topology views available for the DOCSIS models: Interface Device Topology View (Page 14) Sub-Interfaces Topology View (Page 15) Device Management Page 13 DOCSIS Devices

14 DocsisCMTS Model Type Interface Device Topology View Figure 5: Device Topology Views Interface Device Topology View Access: From the Icon Subviews menu for the Device icon, select DevTop. SpectroGRAPH: Device Topology: Model Name File View Tools Bookmarks Help The lower panel (Figure 5) uses Interface icons to represent the device s serial/network/i/o ports. These icons provide the same information and menu options as those in the Device Views (Page 10). If a device is connected to an interface, a Device icon appears on the vertical bar above the Interface icon along with an icon representing the network group that contains the device. See SPECTRUM Views for more details. DOCSIS COMPLIANT CABLE MODEM Model Name CMTS CMTS 1 ON ethernet et.1.1 dhcp_vlan ON ethernet et.1.2 dhcp_vlan Device Management Page 14 DOCSIS Devices

15 DocsisCMTS Model Type Sub-Interfaces Topology View Access: From the Icon Subviews menu for an Interface icon whose interface contains sub-interfaces, select Sub- Interfaces. When present, the endpoints associated with multiplexed, physical connections are modeled by SPECTRUM as sub-interfaces. This includes, for example, Permanent Virtual Circuits (PVCs) on a physical ATM interface and DCL circuits on a physical Frame Relay interface, or, in this case, DocsCableMacLayer interfaces. The lower panel of the Sub-Interfaces Topology view (Figure 6) uses Interface icons to represent these non-physical entities and circuits that are connected to the physical interface. These Interface icons provide the same labels and menu options as the Interface icons in the Device Views (Page 10). Figure 6: Device Topology Views Sub-Interfaces Topology View SpectroGRAPH: Device Topology: Model Name File View Tools Bookmarks Help 1 ON DocsCableMaclayer cm0 0.0.FO:27.62.ID ON DocsCableUpstream us Device Management Page 15 DOCSIS Devices

16 DocsisCMTS Model Type Application Views Figure 7: Application Views Main Application View Access: From the Icon Subviews menu for the Device icon, select Application. SpectroGRAPH File View Tools Bookmarks Help This section describes the Main Application view. For device-specific application information for models of DOCSIS CMTS devices, see the DOCSIS Applications document. Model Name Contact Description Location Net Addr Sys Up Time Manufacturer Device Type Serial Number Main Application View Model Name When a device model is created, SPECTRUM automatically creates models for each of the major and minor applications supported by the device. The main Application view identifies all of these application models, shows their current condition status, and provides access to application-specific subviews. Figure 7 shows this view in the Icon mode. If you prefer the List mode, which displays applications as text labels, select View > Mode > List. CMTS DocsisCMTS For more information on this view, refer to the MIBs and the Application View document. Device Management Page 16 DOCSIS Devices

17 DocsisCMTS Model Type Supported Applications SPECTRUM s applications can be grouped within two general categories as follows: Applications associated with non proprietary MIBs. See Common Applications below. Applications associated with device-specific MIBs. See Device-Specific MIBs (Page 18). Common Applications For the most part, these applications represent the non proprietary MIBs supported by devices. Listed below (beneath the title of the SPECTRUM document that describes them) are some of the common applications currently supported by SPECTRUM. Refer to these documents when your devices support these applications. Note: The documents listed below (in bold font) are available for viewing at: Routing Applications - Generic Routing - Repeater - AppleTalk - DECnet - OSPF - OSPF2 - BGP4 - VRRP - RFC 2932 Bridging Applications - Ethernet Special Database - Spanning Tree - Static - Transparent - PPP Bridging - Source Routing - Translation - QBridge MIB II Applications - SNMP - IP - ICMP - TCP - System2 - UDP Transmission Applications - FDDI - Point to Point - DS1 - DS3 Application Views Device Management Page 17 DOCSIS Devices

18 DocsisCMTS Model Type - RS WAN - Frame Relay - Token Ring - Ethernet - Fast Ethernet - RFC 1317App - RFC 1285App - RFC 1315App App - SONET Technology Applications - APPN - ATM Client - DHCP - DLSw - PNNI - RFC 1316App - RFC RFC RFC RFC 2925 DOCSIS Applications - DOCSISCblDvApp - DOCSISQOSApp - DOCSISBPI2App - DOCSISBPIApp - DOCSISIFApp Application Views Digital Subscriber Line (DSL) Applications - ADSL Device-Specific MIBs SPECTRUM imports the following device-level proprietary MIBs into its database: DOCSIS 1.0 MIBs: DOCS-CABLE-DEVICE-MIB: (RFC 2669) Cable Device MIB DOCS-IF-MIB: (RFC 2670) Radio Frequency MIB DOCS-BPI-MIB: Baseline Privacy Interface MIB DOCSIS 1.1 MIBs (DOCSIS 1.0 is inclusive): DOCS-BPI2-MIB: Baseline Privacy Plus Interface MIB DOCS-QOS-MIB: Quality of Service MIB Device Management Page 18 DOCSIS Devices

19 DocsisCMTS Model Type Application Views Note: See the DOCSIS Applications document for the CMTS applications based on these MIBs (listed here under DOCSIS Applications on Page 18). These MIBs can be used in conjunction with SPECTRUM s optional customization products (referred to as the Level I Tool Kits) to create application models and views that display the condition of selected MIB objects. Note: Aprisma Management Technologies can provide training, technical assistance, and custom engineering support services for creating application models and their associated views. Device Management Page 19 DOCSIS Devices

20 DocsisCMTS Model Type Performance Views This section introduces the Performance view. For details concerning this view, refer to the SPECTRUM Views documentation. Performance views display performance statistics in terms of a set of transmission attributes, e.g., cell rates, frame rates, % error, etc. A typical view is shown in Figure 8. The instantaneous condition of each transmission attribute is recorded in a graph. The statistical information for each attribute is presented in the adjacent table. Generally, you determine performance at the device level through Performance views accessed from the Device and Application icons. You determine performance at the port/interface level through Performance views accessed from Interface icons. Performance Views Figure 8: Performance View SpectroGRAPH: Type Routing File View Tools Bookmarks Model Name Contact Description Location Network Address Primary Application System Up Time Manufacturer Device Type Serial Number Log Value Average Peak Value * Frame Rate % Delivered % Forwarded % Transmit % Error % Discarded 0:40:0 0:30:0 0:20:0 0 *Frames per second Graph Properties Scroll to Date-Time Detail type routing of type IP Routing of Landscape node: Primary Device Management Page 20 DOCSIS Devices

21 DocsisCMTS Model Type Configuration Views Figure 9: Configuration Views Device Configuration View This section describes the Configuration views available for models of the DOCSIS CMTS devices in SPECTRUM. Configuration views let you see and modify current settings for the modeled device and its interfaces, ports, and applications. The following Configuration view is available for models of DOCSIS CMTS devices: Device Configuration View Device Configuration View Access: From the Icon Subviews menu for the Device icon, select Configuration. A typical Device Configuration view is shown in Figure 9. Generally, this view includes fields that display device information as well as an Interface Configuration Table that lists interface parameters (see SPECTRUM Views). Some Device Configuration views include one or more buttons that provide access to device-specific configuration information. These are described beginning on Page 22. File View Tools Bookmarks Model Name Description Location Sort Contact Status Find Update SpectroGRAPH: Model Name Contact Manufacturer Sys Up Time Configuration View Net Address Device Type Serial Number Number of Interfaces Interface Address Table Interface Configuration Table Help Index Description Type Bandwidth Physical Addre IP Address of type Model of Landsape: Primary Device Management Page 21 DOCSIS Devices

22 DocsisCMTS Model Type Configuration Views Contact_Status Indicates whether there is contact with the device, e.g., Established. Number of Interfaces The number of ports on the device. Router Redundancy Lets you set the router redundancy to true or false. Rediscover/Reconfigure Now Lets you reconfigure the device according to settings established in the Device Configuration view. Interface Address Translation Refer to the SPECTRUM Views documentation. IP IF Address Translation Similar to Interface Address Translation, above. Device Management Page 22 DOCSIS Devices

23 DocsisCM Model Type This section describes the DocsisCM Model Type for models of DOCSIS cable modems and its associated subviews. DocsisCM is a light-weight device model type used to model a DOCSIS cable modem. Note: Cable Modems should only be modeled from within a Broadband Service Container (BbSrvContainer). See the Broadband Service Containers document for more information about using the SM- BSC1000 Broadband Service Container Management Module to monitor the operating condition of a broadband network. Table 4 lists the Icon Subviews menu options available from the DocsisCM device icon. Table 4: Option Icon Subviews Menu Options Opens the... Configuration Configuration View (Page 24) Downstream Channel Table Downstream Channel Table (Page 25) Signal Quality Table Signal Quality Table (Page 25) IF Status Table IF Status Table (Page 26) Service Table CM Service Table (Page 27) Service Level Purchase Table Model Information Service Level Purchase Table (Page 28) Model Information View (Page 29) Device Management Page 23 DOCSIS Devices

24 DocsisCM Model Type Note: By default, no attributes are polled for models of CMs. This is done to conserve upstream bandwidth in network environments where thousands of models may have been created. However, in order to maintain contact with CM devices, SPECTRUM polls SysUpTime at three times the polling interval set for the CM. For example, if polling is set to 5 minutes (the default value), the value of SysUpTime for CMs will be read every 15 minutes. If you enable polling for any attribute, polling will be done at the specified interval and SysUpTime will no longer be polled to maintain contact status. For more information about polling, see the How To Manage Your Network with SPECTRUM document. Configuration View Access: From the Icon Subviews menu for the DocsisCM device icon, select Configuration. This view provides a Model Alarming button, described below. Model Alarming This button lets you enable/disable alarms for this CM. Alarms for CMs are Disabled by default. When alarms are disabled, loss of contact results in the model transitioning to a suppressed state which is reflected by the icon turning gray. This alarm functionality can be enabled either on a per model basis using this button or globally by setting the Enable_Alarms attribute to TRUE in the database. See the Getting Started with SPECTRUM s Cable Broadband Solution document for more information. Device Management Page 24 DOCSIS Devices

25 DocsisCM Model Type Downstream Channel Table Access: From the Icon Subviews menu for the DocsisCM device icon, select Downstream Channel Table. This table describes the attributes of downstream channels (frequency bands). The table provides the following fields. With the exception of Id, all field values are read-write. Id A number representing the CMTS identification of the downstream channel within this particular MAC interface. If the interface is down, the most current value is displayed. If the downstream channel identification is unknown, the value is 0. Frequency The center of the downstream frequency associated with this channel, i.e., the current tuner frequency, in hertz. If a CMTS provides IF output, the value is 0 unless the CMTS controls final downstream RF frequency. Width The bandwidth of this downstream channel, in hertz. Most implementations support a channel width of 6 MHz (North America) and/or 8 MHz (Europe). Modulation The modulation type associated with this downstream channel. If the interface is down, this field displays the most current value, or the value Unknown. The other possible values are Qam64, Qam256, and Other. Signal Quality Table Access: From the Icon Subviews menu for the DocsisCM device icon, select Signal Quality Table. This table shows the signal quality of downstream channels for a CM. The table may exclude contention intervals. This table provides the following fields, all of which are read-only. Unerroreds The number of code words received on this channel without error. This includes all code words, whether or not they were part of frames destined for this device. Correcteds The number of code words received on this channel with correctable errors. This includes all code words, whether or not they were part of frames destined for this device. Device Management Page 25 DOCSIS Devices

26 DocsisCM Model Type Uncorrectables The number of code words received on this channel with uncorrectable errors. This includes all code words, whether or not they were part of frames destined for this device. Signal Noise The signal-to-noise ratio (in db*10) as perceived for this channel. It describes the signal-to noise ratio of the downstream channel at the CM. IF Status Table Access: From the Icon Subviews menu for the DocsisCM device icon, select IF Status Table. MAC Address Identifies the CMTS that is believed to control this MAC domain. At the CM, this will be the source address from SYNC, MAP, and other MAC-layer messages. If the CMTS is unknown, this field returns Tx Power The operational transmit power for the attached upstream channel. Resets Number of times the CM reset or initialized this interface. Lost Syncs Number of times the CM lost synchronization with the downstream channel. Inval Maps Number of times the CM received invalid MAP messages. Inval Ucds The number of times the CM received invalid UCD messages. Inval Ranging Resp Number of times the CM received invalid ranging response messages. Inval Reg Resp Number of times the CM received invalid registration response messages. T1, T2, T3, T4 Timeouts The number of times T1, T2, T3, and T4 counters expired in the CM. Ranging Aborts The number of times the ranging process was aborted by the CMTS. Device Management Page 26 DOCSIS Devices

27 DocsisCM Model Type CM Service Table Access: From the Icon Subviews menu for the DocsisCM device icon, select Service Table. This table describes the attributes of each upstream service queue on a CM. IFIndex.CmSID Identifies a service queue for upstream bandwidth. The attributes of this service queue are shared between the CM and the CMTS. The CMTS allocates upstream bandwidth to this service queue based on requests from the CM and on the class of service associated with this queue. Qos Profile The index in Qos Profile Table describing the quality of service attributes associated with this particular service. If no associated entry in Qos Profile Table exists, this field displays 0. Tx Slots Immed The number of upstream mini-slots that have been used to transmit data PDUs in immediate (contention) mode. This includes only those PDUs that are presumed to have arrived at the head end (i.e., those that were explicitly acknowledged.) It does not include retransmission attempts or mini-slots used by requests. Tx Slots Ded The number of upstream mini-slots that have been used to transmit data PDUs in dedicated mode (i.e., as a result of a unicast Data Grant). Tx Retries The number of attempts to transmit data PDUs containing requests for acknowledgment that did not result in acknowledgment. Tx Exceeded The number of data PDUs transmission failures due to excessive retries without acknowledgment. Rq Retries The number of attempts to transmit bandwidth requests that did not result in acknowledgment. Rq Exceeded The number of requests for bandwidth that failed due to excessive retries without acknowledgment. Device Management Page 27 DOCSIS Devices

28 DocsisCM Model Type Service Level Purchase Table Access: From the Icon Subviews menu for the DocsisCM device icon, select Service Level Purchase Table. Qos Profile Index The index in the Qos Profile Table which can be matched with an IFIndex.CmSID in the CM Service Table (Page 27). Profile Status This field is used to create or delete rows in this table. Note: This field must not be changed from active while the row is referenced by any entry in either the CM Service Table or the CMTS Service Table. Guar Up Bandwidth Minimum guaranteed upstream bandwidth, in bits per second, allowed for a service with this service class. Note: This field must not be changed while this row is active. Device Management Page 28 DOCSIS Devices

29 Model Information View This section provides a brief overview of the Model Information view. This view displays administrative information about the device and its applications and lets you set thresholds and alarm severity for the device. Figure 10 shows a sample Model Information view. The layout of this view is the same for all model types in SPECTRUM but some information will vary depending on the model it defines. Refer to SPECTRUM Views for a complete description of this view. Caution: With DOCSIS cable modems, entering an incorrect Community Name does not result in an alarm; however, information will not be received from the device. Make sure that the Community Name is correct. Model Name Description Location Figure 10: Model Information View SpectroGRAPH: Model Name File View Tools Bookmarks MM Name MM Part Number MM Version Type Model Type Model Creation Time Model Created By Model State Security String DCM TimeOut DCM Retry Poll Interval Poll Status Log Ratio Last Successful Poll True Contact Manufacturer SysUpTime Model Information View Communication Information Poll / Log Information Logged Net Address Device Type Serial Number Condition Value Contact Status Lost Child Count Value When Yellow Value When Orange Value When Red Community Name Mgnmt Protocol Help Polled IP Address of Model Type of Landscape: Primary Device Management Page 29 DOCSIS Devices

30 Index A Address Interface IP 12 Physical (MAC) 12 Translation 13 Alarms for CMs 24 Applications, DOCSIS 6, 7 B Bandwidth Downstream Channel 25 BbSrvContainer 6, 23 Broadband Service Containers 6, 23 C Cable Modems (CMs) 4, 23 Alarms and 24 Incorrect Community Name 29 Polling and 24 CMTS 4 Code Words Received 25 Configuration Device 21 Configuration View CMs 24 CMTSs 21 D Device Topology View 13 DOCSIS 4 Applications 6, 7, 18, 19 DOCSISBPI2App 18 DOCSISBPIApp 18 DOCSISCblDvApp 18 DocsisCM 5, 23 DocsisCMTS 5, 9 DOCSISIFApp 18 DOCSISQOSApp 18 Documentation 5 Downstream Channel Bandwidth 25 Frequency 25 Identification 25 Lost Synchronization with 26 Modulation 25 Signal Quality 25 Downstream Channel Attributes 25 E Enable_Alarms, attribute 24 F Frequency Bands 25 G Getting Started with SPECTRUM s Cable Broadband Solution 6, 7, 24 GnCableModem 5 I Icons Interface, Device View 11 IF Status 26 IFIndex.CmSID 27, 28 Interface Type, Device 11 Interface Address Translation 22 Device Management Page 30 DOCSIS Devices

31 Index Index M Management Tasks 7 Model Information 29 Types of 5 Model Alarming, Button 24 Modulation Type 25 N Network Type 12 P Performance Statistics 20 Port Number, Device 11 Q Qos Profile 27 Quality of Service Attributes 27 Resets, Cable Modem 26 Router Redundancy 22 S Signal to Noise Ratio 26 SM-BSC SM-DCS Sub-Interfaces Button 12 T Topology 13 Transmit Power 26 Troubleshooting 7 U Upstream Bandwidth Minimum Guaranteed 28 Service Queue 27 Upstream Service Queue 27 R Rediscover/Reconfigure Now 22 Device Management Page 31 DOCSIS Devices