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Polycom 6000, 7000 manual Troubleshooting and Diagnostics

Models: 7000 6000

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14.Troubleshooting and Diagnostics

This chapter describes procedures for troubleshooting and diagnosing problems that may be associated with the IAD.

Diagnostics are destructive, and may result in loss of connection to network or voice gateway. After running diagnostics, reset the IAD to return to normal working order.

This chapter contains the following topics:

Using the Diagnostics menu (page 260)

Performing POTS diagnostics (page 260)

Performing SDSL diagnostics (page 265)

Performing ISDN-BRI diagnostics (page 266)

NOTE When the IAD prompts you for input, the current value is displayed in parentheses. To conveniently accept the current value, just press Enter.

NetEngine IAD User Guide

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Polycom 6000, 7000 manual Troubleshooting and Diagnostics

Contents

User Guide Version Verilink CorporationPage Table of Contents Chapter Administration Chapter WAN ConfigurationRouter Configuration Bridge Configuration Voice Path ConfigurationFirewall Configuration Dhcp Server ConfigurationMulticast Configuration NAT ConfigurationCommand Line Interface IAD ReportsNetEngine IAD User Guide Appendix D Connector Pinouts Chapter Troubleshooting and DiagnosticsAppendix C NetEngine IAD Specifications Chapter VerificationAudience Contents PrefacePreface Xiv Product Warranty Contacting Verilink Repair Information ConventionsRegulatory Notices FCC NoticeFIC Industry Canada NoticeDeclaration of Conformity Underwriters Laboratories StatementCE Mark Xix Preface NetEngine IAD User Guide Introduction Family IADFeatures Data Interfaces NetEngine 6000 IAD FamilyFront Panel Power and Status Indicators DescriptionRear Panel Connectors NetEngine 7000 IAD Family Family IAD Front Panel Front Panel LEDsAC Power Universal Serial Interface USI PortIntroduction NetEngine IAD User Guide Quick Start Guide Unpacking the IAD Installing the IADAC Power and Uninterruptible Power Supply IAD Package ComponentsConnect the IAD to a PC Wiring RequirementsConnect via Terminal Emulator Power Up the IAD Log in via a Terminal Emulation ProgramSetting the Ethernet Port IP Address Main Menu10/100BaseT Ethernet Abort Enter connection to configureAvailable Interfaces G2237 xDSL G7070 Adsl ATU-R T1/E1 Select priority Normal/High N/H N Resetting the IADPress R to Reset now Connecting via Telnet Running TelnetUsing Menu Interface Toggle Cmcp Debugging Manage Mgcp Embedded Client Selection Configure MulticastMain Menu Reports Menu Configure Login Navigating the IAD Menu Interface Entering Settings and ValuesUsing Default or Current Values Enter a new subnet mask for this interface 255.255.255.0Ethernet LAN Connection Basic IAD Configur- ation ConnectingUSI Telephones WAN ConnectionsUSI Connection 7200 Telephone ConnectionsVerify Normal Power Up and Operation Confirming Proper SetupReset the IAD Making RJ21X Connections 7000 familyAdministration Privileges IAD SecuritySecurity Level Privileges Security level Changing a Password Default User IDs and Passwords Security LevelEnter new User ID up to 17 characters Including User ID and Passwords in Config FilesChanging the User Level User ID Changing the Radius Encryption Secret Server SettingsChanging the Radius Server Address Displaying the Radius Configuration Setting Up Using the Snmp Configuration MenuEnabling and Disabling Snmp via EOC Configuring the System ContactEnabling and Disabling Snmp via IP Enabling Snmp via IP and EOCConfiguring the System Community Configuring the System NameConfiguring the System Location Configuring the Snmp Trap Host IP AddressEnabling or Disabling Snmp Traps via EOC Configuring Restart Trap Maximum DelaySnmp traps sent via EOC are currently Disabled Copying the Source Files Using Tftp Servers via LAN or WANUpgrading the System Upgrading via TftpVerifying the Upgrade Download using Tftp Enter ip address of Tftp serverSelecting the Connection Setting up Your LAN ConnectionEstablishing LAN Speed and Duplex Mode Using System Utilities Pinging Network DevicesConfiguring the Console Baud Rate Using Trace RouteSetting up the USI Port Trace Route Results to 5msPerforming a Hard Reset Managing Configuration FilesConfiguring the Console Timeout Period Setting System DefaultsSelect Default Custom Defaults Factory Defaults Saving System SettingsClearing the Last Reset Reason Displaying the Event LogAdministration Using the File System Displaying the IAD File DirectoryDeleting Files Copying FilesRenaming Files Formatting the File SystemEnabling and Disabling PPP Debug Mode Using Debug MenuSetting the Ethernet MAC Address PPP Debug Mode is currently DisabledDisplaying Error Dumps Enabling and Disabling STP Debug ModeEnabling and Disabling Dhcp Client Debug Mode STP Debug Mode is currently DisabledFile Transfer Method Receive via Tftp Receive via Xmodem Loading a Boot ROM FilePerforming File Transfers Updating the System Using File Transfer UtilitiesUpdating Acos Are you sure? Y or NUsing the Tftp Server Menu 12. Tftp Server MenuEnabling and Disabling Derived Timing Setting Derived Timing OptionsDerived Timing Feature is currently DISABLED. Enable now? Y Enabling and Disabling Derived Timing Debug MessagesVerifying the IAD IP Addresses Verifying An IP AddressVerifying an IP Address for Windows Systems Administration NetEngine IAD User Guide WAN Configuration Basic WAN Setup Tasks XDSL WAN Configuration FlowchartT1/E1 WAN Configuration Flowchart Identifying your WAN Interface and Datalink Protocol Sdsl with Frame Relay Channelized T1 with Frame RelayChannelized T1 with ATM Sdsl with ATM6100 or 6500 series IADs do not support Frame Relay Using WAN Config- uration MenuSelecting the Datalink Protocol WAN Configuration Menu ATM Selecting ATM or Frame RelayUndefined Mode Linked Current configuration table is ChConfigurationUndefined Mode Linked to Pots port Frame RelayEnter starting channel of this voice channel chunk Physical Interface Selecting the xDSL Interface TypeConfigur- ing Shdsl Interface 10. G2237 xDSL Configuration MenuSelecting the Line Rate Selecting CPE or CO ModeEnabling and Disabling Adaptive Rate Mode Enabling and Disabling xDSL Debug MessagesOn the 6504, 6504i Configur- ing Sdsl InterfaceThis section is only for configuring the Sdsl WAN interface Configuring the Adaptive Rate Mode 15. Configure Sdsl Rate Mode Menu16. Sdsl Configuration Menu Setting Sync Delay-Lucent Dslam Setting Auto Cycle-Nokia DslamSetting Auto Sense-Coppermountain Dslam Setting AccessLan CPE Mode-AccessLan DslamSetting Sdsl Interface Mode Setting Sdsl Speed for Imas DSLAM-Nortel DslamSetting Sdsl Speed Manually Configuring the Sdsl Auto Cycle Speed TableUsing the Debug Menu Enter Sdsl Auto Cycle Speed Entry to ConfigureConfigur- ing Adsl Interface DMT Alcatel Multi-Mode ADISetting the Interface to T1 or E1 21. WAN Configuration Menu for T1/E1T1/E1 mode is currently T1 Change T1/E1 mode to E1? Y = yes Switching from T1 to E1Switching from E1 to T1 T1/E1 mode is currently E1 Change T1/E1 mode to T1? Y = yesConfigur- ing the T1 Interface Selecting Frame ModeSelecting B8ZS or AMI Setting Line Build OutConfiguring Loopback Configuring the Transmit and Receive Channels Enabling or Disabling All ChannelsEnabling or Disabling Specific Channels Select Channel to Enable/Disable, then press EnterConfiguring Transmit Clock Source Selecting a Channel RangeSelecting Frame/CRC4 Mode Configur- ing the E1 InterfaceDisplaying Physical Layer Stats and Alarm Log Configuring S-Bits Select E1 Frame Mode33. Configure S-Bits Menu Configuring the Transmit Clock Source 35. Select Tx Clock Source menuRalos Rlos Rlof Sigfrz Adding a PVC ConfiguringATM PVCs Enter Virtual Port Identifier VPI37. ATM Encapsulation Configuration Menu CBR UBRModifying a PVC AAL2 LES, NBTSetting up RFC 1483 VC Muxing or RFC 1483 LLC Encapsulation Setting up AAL5 or AAL0 EncapsulationSetting up Proprietary Voice Encapsulation 43. ATM Encapsulation Configuration Menu 45. Ipcp Configuration Menu Setting up AAL1/CES 47. ATM PCR Configuration MenuSetting up AAL2/LES 51. AAL2 Audio Profile Format MenuDeleting a PVC Showing Current PVCsConfiguring Payload Scrambling Configuring the F4 OAM VPISending OAM Loopback Configuring the F4 OAM TypeDisplaying F4 OAM Configuration Configuring EmptyCells Frame Relay DLCIs Modifying a DlciEnter the committed burst size Bc in number of bits Configuring Transmit CIRAdding a Dlci Enter the Circuit Throughput in bits/second Configuring Receive CIRConfiguring FRF.12 Fragmentation Enter the excess burst size Be in number of bitsEnter maximum fragment size in bytes 100-1600 Deleting a DlciDisplaying Current DLCIs Port Dlci Encapsulation RAW No Encapsulation Select PortSelecting Fragmentation Types Setting FRF.12 ConfigurationFrame Relay Options Enabling or Disabling FRF.12 Setting the Fragment Size ManuallyCopperMountain Fragmentation Configuration Enabling Automatic Fragment SizingEnabling or Disabling Coppermountain Fragmentation Configuring the Maintenance ProtocolSetting Real Time Dlci Configuring the Congestion Parameters 64. Frame Relay Maintenance Protocol MenuToggling Cmcp Debugging Cmcp is currently Disabled Enter E to Enable, D to DisableEnabling or Disabling Coppermountain Cmcp 66. WAN Configuration Menu Quick Con- figurationRouter Configuration Basic Router Setup Tasks Router Configuration Task FlowchartRouter Configur- ation Menu Port IP Address Save new IP Information? -Y Unconfig- uring a Port IP Address Setting the Port Maximum Transmis- sion Unit Enabling and Disabling RIP Poisoned Reverse by Port RIP is currently Disabled Enter E to Enable, D to DisableEnabling and Disabling Enabling RIP GloballySetting the RIP Version Managing Static Default Routes Adding a Static RouteRemoving the Default Route Setting Default RouteAdding or Changing the Default Route Removing a Static RouteSetting the DNS Server Timeout Config- uring DNS ClientSetting the DNS Server IP Address Enter DNS Server Timeout in seconds 5...20IP Address Timer Host Name Displaying the DNS Cache and StatisticsConfig- uring Dhcp Client Enabling and Disabling Dhcp Relay Config- uring Dhcp RelayConfiguring the Dhcp Server IP Address Displaying Dhcp Relay Statistics IP Filtering Configuration Menu Enter Telnet Server PortGlobally Enabling and Disabling Filters Input Filters Disabled, enter 1 to enable, 0 to disableChoosing a Port for IP Filtering Displaying Filters Output Filters Disabled, enter 1 to enable, 0 to disableToggling Between Input and Output Filters Inserting, Appending and Editing FiltersDescription Copying Filters for EditingFilter Parameters Filter Details Parameter Copying a FilterDisplaying a Filter in the Buffer Deleting an IP Filter Editing a Filter in the BufferDeleting a Filter from the Buffer Clearing IP Filtering Statistics Deleting All Filters of the Chosen TypeShowing IP Filtering Statistics Are you sure you want to delete all filters? y/nConfig- uring IP Header Compress- ion Iphc IP Header Compression for SDSL, Port 1 is currentlyConfig- uring LAN IP Broadcast Destination Displaying Route Route Table ParametersRouter Configuration 128 NetEngine IAD User Guide Bridge Configuration Basic Bridge Setup Tasks Bridge Configuration Task FlowchartBridge Configur- ation Menu Bridge Configuration MenuEnabling and Disabling Bridging Enabling or Disabling Bridging GloballyPort Dlci Encapsulation Proprietary Voice Dlci Enabling or Disabling Bridging by PortAvailable Interfaces G2237 xDSL 10/100BaseT Ethernet Abort Enabling or Disabling STP by Port Setting Bridge Aging Timer Enabling and DisablingEnabling or Disabling STP Globally Enter Bridge Aging time in seconds 1..3600Enter Bridge Priority 1..65535 G2237 xDSL 10/100BaseT Ethernet AbortSpanning tree over T1/E1 Port 1, is currently Enter Spanning Tree Max Age 6..40 Enter Priority for Slot 2, Port 1Enter Bridge Hello Time1..10 Enter Spanning Tree Forward Delay 4..30 Enter Path Cost for Slot 1, Port 1 1..65535Deleting a Bridge Forwarding Database Entry Enter Ethernet address to delete from bridge databaseVoice Path Configuration Basic Voice Path Setup Tasks Voice Path Configur- ation Menu Jetstream Setting Voice GatewayCopperCom MgcpSetting Jitter Delay Enter number of ms to delaySetting All Ports to Ground Start Displaying Jitter Delay Setting Start ModeSetting All Ports to Loop Start Displaying Start ModeConfiguring Start Mode on an Individual Port SettingControl Mode Setting Compander Mode Set On Hook Transmis- sion ModeReset the IAD Setting Idle Voltage ModeDisplaying Idle High Voltage Settings Enabling and DIsabling Idle High Voltage GloballyDisplaying Echo Cancellation Settings Setting Debug Mode Configur- ing Echo Cancell- ationEnabling and DIsabling Echo Cancellation Globally Enabling and DIsabling Echo Cancellation for all PortsEnter Transmit Loop Gain for all ports range -9dB/ 3dB -2dB Setting Loop GainSetting Loop Gain for All Ports Enter Receive Loop Gain for all ports range -9dB/ 3dB -4dBDisplaying Loop Gain Settings Configuring Loop Gain Setting by PortSetting Country Mode 11. Country Mode Selection MenuEnter the listening port of the Notified Entity Configuring Mgcp ParametersEmbedded Client Removing a Connection Displaying Mgcp StatisticsDebugging Mgcp Setting Admin State Globally Port AdministrationConfiguring Admin State per port Displaying the Current Admin StateEnter packet size in ms Configuring Default Packet SizeRestarting an Endpoint Displaying CopperCom Statistics CopperCom ConfigurationManaging Copper Com Call Control Clearing CopperCom StatisticsSetting Framing Format Displaying CopperCom ConfigurationSetting Compression Format CopperCom Debug Control Performing a Ring Test JetStream Call Control SettingsDisplaying Statistics Selecting Insufficient Bandwidth Sound Configuring Trace SettingsDisplaying the IAD State Resetting Statistics 20. Ring Test Menu for JetStream Voice GatewayConfiguring the IAD for a Specific AAL2/LES Gateway Configur- ing AAL2Configuring for AAL2/LES CAS AAL2/LES Call Control Configuration Debugging StatisticsEnabling and Disabling Ports Manual ConfigurationSetting the CAS Refresh Rate Enabling and Disabling Idle CAS RefreshingChanging the Maximum CPS-SDU Size Setting the Combined Use TimerSetting ATM Pace Control Manually Enabling and Disabling User State ControlDisplaying Audio/CAS/Alarm Statistics Setting the Audio Bit Rate MarginSetting the Minimum Signaling Bit Rate Debugging AAL2/LES Gateways Displaying AAL2/LES StatisticsConfiguring Variant/Interface Management Configuring for AAL2/LES CCS-ELCPAAL2/LES CCS-ELCP Menu Configuration Debugging Statistics Viewing AAL2/LES Statistics Setting Debugging OptionsDebugging for AAL2/LES CCS-ELCP Debugging Set Debugging Options Display V5 FSM StatesClearing AAL2 Channel Statistics Audio and Alarm StatisticsDisplaying AAL2 Channel Statistics Voice Path Configuration 168 NetEngine IAD User Guide Firewall Configuration Creating a Firewall via IP FilteringFirewall Configuration 170 NetEngine IAD User Guide Dhcp Server Configuration Server Setup Tasks Dhcp Server Configur- ation Menu BasicServer Enabling and Disabling Checking for Additional UsingDebugging Messages ServersCurrent Subnet Mask = 255.255.255.0 Enter new Subnet Mask Configur- ing Dhcp Server ParametersCurrent NetBIOS Node Type h-node Current Domain name = Enter new Domain NameHost name is currently Enter new Host Name Dhcp Address Range Pool Configur- ing a Dhcp Client EntryEnter Client entry number to configure 1...10 Dhcp Server Configuration 176 Server Details Dhcp Server Details FieldDhcp Server Statistics Server StatisticsServer Assigned and Un- assigned Addresses Dhcp Server Assigned Addresses Field DescriptionClient Entry Deleting a Entry DetailsDeleting a Assign- ment EntryDhcp Server Configuration 180 NetEngine IAD User Guide Multicast Configuration Multicast Configuration Menu Multicast Routing Source Menu Enter subnet mask for the source Adding a Multicast Routing SourceEnter IP address for the Source 0.0 0.0.0.0 0.0.0.0 190.232.5.1 default Network Address Netmask Incoming InterfaceIgmp Querier Interface 10/100BaseT Ethernet This interface PIM Neighbor Interface 10/100BaseT Ethernet Displaying PIM NeighborMulticast Routing Table Fields Multicast Configuration 188 NetEngine IAD User Guide NAT Configuration NAT Default Parameter Settings Range NAT1483LLC Encapsulation EnablingTranslation Enter NAT Local Server Translated Port Number 1..65535 Enter NAT Local Server Entry to ConfigureNAT Local Server Enter NAT Local Server Standard Port Number 1..65535NAT Timeouts Enter High End of NAT Port Range 50000..65534 NAT Port RangeEnter Low End of NAT Port Range 5000..65534 Enter NAT Alias Entry to Configure 1..7 NAT Alias EntryNAT Statistics NAT Statistics Report EntryNAT Connection Table Report Entry ConnectionConnection Details Enter outside port number of connectionNAT Connection Details Report Entry NAT Local Server Table Report Report Entry NAT Alias TableDeleting IP Addresses from NAT Tables NAT Alias Table Report Entry DescriptionDeleting a NAT Local Server Entry NAT Alias Enter NAT Local Server Entry to Delete 1..20IAD Reports Report Menu Reports MenuCurrent Configur- ation Report Current Configuration Report ParameterPort # Current Configuration Report Parameter Description IP Interfaces on Port #Icmp Statistics Report Parameter Description Network Statistics ReportsIcmp Statistics Report Icmp Statistics Report Parameter Sent Packet InformationIgmp Statistics Report Igmp Statistics Report Parameter DescriptionIP Statistics Report Parameter Description IP Statistics ReportIgmp Statistics Report Parameter IP Statistics Report Parameter PIM Statistics Report PIM Statistics Report Parameter DescriptionTCP Statistics Report Parameter Description TCP Statistics ReportPIM Statistics Report Parameter UDP Statistics Report Parameter Description UDP Statistics ReportTCP Statistics Report Parameter Clearing Network Statistics UDP Statistics Report ParameterDisplay ARP Statistics Interface Statistics ReportsAvailable Interfaces T1/E1 10/100BaseT Ethernet Abort Clear a StatisticARP Statistics Report ARP Statistics Report Parameter DescriptionInterface Statistics Report Interface Statistics Report Parameter Description10.Bridge Statistics Report Parameter Description Bridge Statistics ReportDlci Statistics Report 11.DLCI Statistics Parameter Received Frame Information12.AAL1 Cpcs Statistics Report Parameter ATM PVC Statistics ReportAAL1 Cpcs Statistics Report AAL2 Statistics Report 13.Common CPCS-2 Statistics Report Parameter15.Common AAL Statistics Report Parameter Cumulative CPCS-2 Statistics ReportCommon AAL Statistics Report IAD Reports 223 IP Header Compression Statistics Report 16.IP Header Compression Statistics Report Parameter17.PPP Statistics Report Parameter Description PPP Statistics ReportClearing Interface Statistics Media Statistics Reports Media Statistics Menu SampleFrame Relay Statistics Report 18.Frame Relay Statistics ReportSerial USI Statistics Report 19.Serial Statistics Report ParameterATM Statistics Report 20.ATM Statistics Report FieldIAD Reports 230 G2237 xDSL Statistics Report 21.G2237 xDSL Statistics Report ParameterDSL2 Ethernet Statistics Report 22.Ethernet Statistics Report Parameter Description22.Ethernet Statistics Report Parameter G7070 Adsl Statistics Report 23.G7070 Adsl Statistics Report ParameterPots Statistics Report 24.POTS Statistics Report Parameter25.BRI Statistics Report Parameter BRI Statistics ReportClearing Media Statistics 26.Route Table Report Parameter ARP Table ReportBridge Forwarding Database Report 27.ARP Table Report ParameterPPP Authorizati on Entries Report No PPP Authorization Entries ConfiguredBridge Status Report 28.Bridge Forwarding Database Report ParameterSystem Memory Statistics Report 30.PPP Authorization Report ParameterSystem Uptime Report Memory Statistics Reports Zero All Statistics Kernel Tasks Memory Statistics ReportIAD Reports 242 NetEngine IAD User Guide Command Example Command Line InterfaceCommand Line Syntax Intro- duction Set wan stp bridgeCommand Line Interface 244 Exit Command Line Interface ReferenceExit Ping Quit Rename file Ping IP address size triesSet bridge global on off Reset systemRemove lan ip address Set bridge global Set dhcp server netbios Set dhcp server domain Set bridge stp globalSet dns server address Set ip default route Set ip route Set dhcp server rangeSet lan bridge Set lan ip address Set lan bridge on off slot interface portSet mgcp bracketing on off Set lan rip Set lan stp bridge Set mgcp bracketingSet lan stp bridge on off slot interface port Set mgcp listening port port Set mgcp signaling connection portSet mgcp signaling tos byte value Set mgcp voice connection slot interface port connection Set mgcp voice connection Set mgcp voice tosSet nat Set mgcp voice tos byte valueSet sdsl speed speed auto manual Set sdsl speed Set system defaults Set wan atm ppp authSet system defaults Set wan bridge on off slot interface port Set wan atm vc Set wan bridgeSet wan atm vc vpi vci 1483 2364 slot interface port Set wan datalink Set wan framerelay Set wan datalink framerelay atm slot interface portSet wan ip address Set wan stp bridge Show configura- tion Show dhcp server configura- tion Show ip routes Tftp receiveCommand Line Interface 258 NetEngine IAD User Guide Troubleshooting and Diagnostics Diagnostics Perform an all-lines test? Y or N Performing a Dialup TestPerforming a Hotline Test Lines 1 and 2 are connected togetherRing all lines? YN or ESC Performing a Power Supply TestPerforming a Phone Detect Test Ring lines concurrently or sequentially? CS or ESCTroubleshooting and Diagnostics 263 Performing an On/Off Hook Test Display hook state Press a key to exit 3 4 5 6 7Sdsl BRI Diagnostics Menu Probable Cause Corrective Action Troubleshooting-Symptoms and CausesTrouble- shooting the IAD Cannot receive or send data IAD Provisioning Parameters Troubleshooting and Diagnostics 270 NetEngine IAD User Guide Verification Power-up Test Operational Test Testing the IADMainten- ance Displaying the Current Configur- ation Verification 274 NetEngine IAD User Guide Menu Map ESCMenu Map 276 Country Codes Italy Belgium2Denmark Family NetEngine IAD SpecificationsTable C-1 Family Analog Voice Features Table C-2 i and 6504i Isdn Voice Features Table C-3 Family Digital Voice Features Table C-4 Family Data FeaturesAdsl Annex A, B-6104i Table C-5 Family WAN Interface Features DescriptionAdsl G.lite, G.dmt-6100-4 SHDSL-TCPAM, SDSL-6504i, 6504T1 Provisioning-6200c Table C-5 Family WAN Interface FeaturesT1 Interface-6200c Frame Relay Table C-6 Family Transport Protocol Features DescriptionTable C-7 Family Configuration and Management Features Table C-8 Family Security Features Table C-10 Network InterfacesDigital Table C-11 Family Voice FeaturesAnalog Interface Table C-12 Family Data FeaturesTable C-13 Family WAN Features Cell Delay Variation Buffer OAM Cell Handling Connector Pinouts Table D-1. RS-232 DB-9 Console Port Pin Assignments SignalTable D-6. ADSL/SDSL Connector Pin Assignments RJ45 Signal Table D-4 BaseT Connector Pin Assignments SignalTable D-5 BaseT Connector Pin Assignments RJ48 Signal Table D-7. G.SHDSL Port Pin Assignments RJ11 Line Tip RingTable D-9. USI Port for RS-530, V.35 and RS-449 Signal Table D-8. T1/E1 Connector Pin Assignments SignalPin Signal RS-530 RS-449Connector Pinouts 292 NetEngine IAD User Guide Glossary Glossary 294 Glossary 295 Glossary 296 Index AdslDNS Shdsl LAN NAT Safeguards WAN NetEngine IAD User Guide