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About the SNMP DSU

1-3

7610-A2-GB20-10

November 1997

Supported Link-Layer Protocols

The DSU supports two link-layer protocols for connection to an external SNMP
manager or network device:

Point-to-Point Protocol (PPP)

Serial Line Internet Protocol (SLIP)

Typical SNMP DSU Configurations

The following illustration shows a typical LAN/WAN interconnection application for
the DSU. The routers connected to the DSU at each location provide the LAN
interconnection.

497-15274

SNMP

DSU

DDS

Router

DDS

SNMP

DSU

Digital

Data

Network

Router

The SNMP DSU can also be used in a frame relay network.

497-15275

SNMP

DSU

DDS

Router

DDS

SNMP

DSU

Frame

Relay

Network

Router

Two SNMP DSUs can be connected back-to-back to act as Local Area Data Sets.
Table 3 in the

Model 7610 DSU Startup Instructions shows the maximum

distances for LADS applications.

497-15276

SN M P

DSU

56 Kbps

Router

SN M P

D SU

Router

64 Kbps

Содержание 7610 SNMP DSU

Страница 1: ...MODEL 7610 SNMP DSU USER S GUIDE Document No 7610 A2 GB20 10 November 1997...

Страница 2: ...s the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Paradyne Corporation to notify any person of such revision or changes Changes...

Страница 3: ...Support 1 2 Supported Link Layer Protocols 1 3 Typical SNMP DSU Configurations 1 3 User Interface Types 1 4 Rear Panel Interface Connections 1 4 2 Using the ATI Accessing the ATI 2 1 Connecting to th...

Страница 4: ...n 3 5 Call Setup Screen 3 7 4 Security Security Overview 4 1 Creating a Login 4 2 Deleting a Login 4 3 ATI Access 4 4 Effective Access Level 4 4 Controlling SNMP Access 4 6 Assigning SNMP Community Na...

Страница 5: ...ests 7 2 CSU or External Network Loopback 7 3 DSU or Internal Network Loopback 7 3 Send V 54 Up Down Sequences 7 3 511 Test Pattern for the Network 7 4 Data Port Tests 7 4 Local Loopback 7 4 511 Test...

Страница 6: ...tion Options Menu A 22 Communication Protocol Options A 22 General SNMP Management Options A 24 SNMP NMS Security Options A 25 SNMP Traps Options A 27 ASCII Characters A 29 B Worksheets Overview B 1 C...

Страница 7: ...ts Cabling Overview E 1 Terminal Port EIA 232 Connector E 2 Management Port EIA 232 Connector E 2 V 35 User Data Port Connector E 3 Standard EIA 232 D Crossover Cable E 4 LAN Adapter Converter and Cab...

Страница 8: ...navigating the screens Chapter 3 Customizing the SNMP DSU Provides procedures for setting up the user interface device information call setup and DSU configuration steps Chapter 4 Security Presents p...

Страница 9: ...he DSU Appendix D Standards Compliance for SNMP Traps Contains SNMP trap compliance details Appendix E Cables and Pin Assignments Contains connector and interface details Glossary Defines acronyms and...

Страница 10: ...Telnet session or External Modem Local Management Provides local management via an Async terminal connection through the Terminal port NMS connection through the Management port Remote Management Prov...

Страница 11: ...age Areas Allows quick access to alternate sets of configuration options Security Provides multiple levels of security which prevents unauthorized access to the DSU SNMP Management Capabilities The DS...

Страница 12: ...tion application for the DSU The routers connected to the DSU at each location provide the LAN interconnection 497 15274 SNMP DSU DDS Router DDS SNMP DSU Digital Data Network Router The SNMP DSU can a...

Страница 13: ...e Management port or remotely through the in band management channel IMC connection Refer to IP Addressing Chapter 5 Front panel LED status indicators Refer to Monitoring the DSU Chapter 6 Rear Panel...

Страница 14: ...ther user s session cannot be forced to end To automatically log out a user due to inactivity enable the Inactivity Timeout option see Terminal Port Options Table A 4 The user interface is blank until...

Страница 15: ...nd login administration or to initiate a power up reset of the DSU Configuration Edit Display System Network Data Port User Interface Alarms Traps SNMP Communication User Interface Terminal Port Manag...

Страница 16: ...value or selection See Screen Work Areas Display Display configuration information and results from performance and DSU specific tests Display only fields that have no underline in the field value Wh...

Страница 17: ...nterface Terminal Port Screen function key area Provides functions available below the dotted line based upon screen selection and access level Refer to the Switching Between Screen Work Areas section...

Страница 18: ...to the left Ctrl k Select the next valid value for the field Spacebar Delete character that the cursor is on Delete Del Move cursor up one field within a column on the same screen Up Arrow or Ctrl u...

Страница 19: ...through other valid values Screen Function Keys All screen function keys located below the dotted line operate the same way upper or lowercase throughout the screens For the screen function Select An...

Страница 20: ...d function key Example To leave the current screen enter e or E Exit 3 Press Return The function is performed 4 To return to the screen area above the dotted line press Ctrl a again main configuration...

Страница 21: ...8 001 Clear System Location Bldg A412 2nd Floor Left cabinet Clear System Contact Joe Smith 800 555 5555 pager 888 555 5555 Clear Ctrl a to access these functions ESC for previous menu MainMenu Exit S...

Страница 22: ...Save is complete Command Complete appears at the bottom of the screen Identity Information The Identity screen provides identification information about the DSU To view information on the three Syste...

Страница 23: ...e DSU offers four sets of configuration option settings located in the following areas The first three sets match the Default Factory Configuration options set until modified and saved by the user If...

Страница 24: ...screen reads Access Level is n Configuration is read only The Save prompt will not appear on any screens Refer to Security Chapter 4 Saving Configuration Options When changes are made to the configura...

Страница 25: ...reen Use the Call Directories screen to enter or change the phone numbers used to Send out an ASCII alarm message to an ASCII terminal or printer Send out an SNMP trap message Connect to an NMS for di...

Страница 26: ...ine Select Save and press Return Table 3 1 Call Directory Phone Number Entries Characters Use B Blind dialing do not wait for dial tone P Pulse dialing unless preceded by a B T Tone dialing unless pre...

Страница 27: ...on the Call Directories screen To access the Call Setup screen follow this menu selection sequence Main Menu Control Call Setup main control setup Device Name Model 7610 CALL SETUP Directory Primary...

Страница 28: ...Management port or the IMC Limit the access Port Access Level option of 1 2 or 3 for the Terminal port Session Access Level option of 1 2 or 3 for the Telnet Session Disable the access Telnet Session...

Страница 29: ...e login by entering the following fields For valid entries in the first two fields refer to the ASCII Characters section of Appendix A On the Administer Logins screen for the Enter Login ID 1 to 10 AS...

Страница 30: ...line 3 Select PgUp or PgDn and press Return to page through login pages records until you find the one to be deleted 4 Once the correct record is displayed select Delete and press Return 5 To complet...

Страница 31: ...e Management port and IMC from supporting a Telnet session Set the Port Use option to None or Alarms Refer to Management Port Options Table A 5 Disable the IMC using the In Band Management Channel Rat...

Страница 32: ...Required option set to Enable See Table A 4 You are prompted for a login ID and password If Invalid Password appears re enter the password After three tries with an invalid password contact the syste...

Страница 33: ...NMP Management Refer to General SNMP Management Options Table A 10 to Enable SNMP Management Assign the SNMP community names of the SNMP Managers that are allowed to access the DSU s Management Inform...

Страница 34: ...to Management Port Options Table A 5 However verify that a route to the subnet s is set in the NMS s or local router s routing table This equipment will not automatically receive routing information d...

Страница 35: ...ganization The following illustrations and examples apply to IP management traffic only The subnet mask shown for these examples is 255 255 255 000 IMC Connection Same Subnet In this example DSU A is...

Страница 36: ...n the routers The illustration shows each DSU with its own subnet This subnet is independent of the subnet on the LAN which is supported by the local router This enables the router to distinguish the...

Страница 37: ...rt IP address and subnet mask Refer to Communication Protocol Options Table A 9 The IMC Assign the IP address and subnet mask Refer to Network Interface Options Table A 2 The SNMP NMS Security Options...

Страница 38: ...ys on the right on the last line of all screens Network Interface Status screen on the ATI Network Performance Statistics screen on the ATI NMS via SNMP MIB objects Refer to MIB Descriptions Appendix...

Страница 39: ...xit Refresh When viewed via the ATI the status display screen is updated approximately every 5 seconds Use Refresh to obtain a current status of all LEDs System LEDs OK ON DSU is operational OFF DSU i...

Страница 40: ...network interface is receiving CMI codes OOS Out of Service ON The network has notified the DSU that the remote unit is out of service Refer to Health and Status Messages Table 6 1 OOF Out of Frame ON...

Страница 41: ...ta ON Sending all 0s to the DTE OFF Sending all 1s to the DTE Blinking User data is being transferred RTS Request to Send ON DTE is activating a control signal to indicate readiness to transmit data C...

Страница 42: ...on the bottom right The messages are listed from high to low priority in Table 6 1 Table 6 1 Health and Status Messages 1 of 2 Message What Message Indicates What To Do Cross Pair Detection The DDS R...

Страница 43: ...nit has IMC set at the same rate 2 Contact network provider if problem persists User Data Port DTR Off The DTE is not ready to transmit or receive data This message will not appear unless Monitor DTR...

Страница 44: ...o an operating line and the Line Rate Kbps shows Autobaud and does not change to a line rate within about 25 seconds Line Rate Kbps may have to be reconfigured manually Refer to System Options Table A...

Страница 45: ...1920 26 33 08 Out of Service Count 0 0 00 00 Out of Frame Count 621 8 53 49 Excessive BPV Count 99830 144 28 11 Invalid BPV Count 87409 ESC for previous menu MainMenu Exit Refresh ClrStats All counts...

Страница 46: ...tion Indications The following table shows the available indicators of alarm conditions on the network interface and the User Data port Alarm Condition SNMP Trap ATI Status Screen ASCII Alarm if confi...

Страница 47: ...are supported on the DTE port Network Tests To access the Network Tests screen follow this menu selection sequence Main Menu Test Network Tests main test network Device Name Model 7610 NETWORK TESTS T...

Страница 48: ...the user via ATI or by the NMS DSU CSU DTE Interface Aggregate DTE Port DDS Network Port 496 15160 DSU Loopback Send V 54 Up Down Sequences The local DSU can send an ITU T V 54 Up or Down sequence to...

Страница 49: ...ated as close as possible to the User Data Port DTE interface DSU CSU DTE Interface Aggregate DDS Network Port 496 15145 DTE Port Local Loopback 511 Test Pattern for the DTE This test sends or monitor...

Страница 50: ...ll tests on all interfaces have been terminated Test Status Messages The Test Status Messages in Table 7 1 appear in the right most column of the System and Test Status screen For additional informati...

Страница 51: ...pback is active that was initiated by the detection of a V 54 sequence originated by the remote unit This condition can only occur when V 54 Initiated DSU Loopback is enabled Refer to Network Interfac...

Страница 52: ...via CT140 can be disabled Refer to Data Port Options Table A 3 Device Reset The DSU can be reset locally or remotely From the Control menu select Reset Device and press Return The DSU reinitializes it...

Страница 53: ...f entering yes to prompt Then all Reset Terminal Port Options Terminal port options are set to their factory default values Refer to Terminal Port Options Table A 4 Reload Factory Defaults Factory def...

Страница 54: ...shooting Alarm Messages Alarm messages and SNMP traps are unsolicited messages sent out from the DSU automatically when the DSU detects conditions set by the user ASCII Alarms Alarm messages are sent...

Страница 55: ...ion of Chapter 3 for device name information Each ASCII alarm message is preceded by the device name and a time stamp The time stamp ddd hh mm represents the cumulative number of days hours and minute...

Страница 56: ...anager specified H Select the type of SNMP traps to be sent from the DSU To configure SNMP Traps follow this menu selection sequence Main Menu Configuration Load Configuration From Edit SNMP Communica...

Страница 57: ...entered access is denied Try again Contact your system administrator to verify your password Invalid Test Already Active Test can be a CSU DSU or DTE Local Loopback or a Send 511 or Monitor 511 The te...

Страница 58: ...rted from Troubleshooting This DSU is designed to provide you with many years of trouble free service If a problem occurs however refer to Table 8 2 for possible solutions Table 8 2 Troubleshooting 1...

Страница 59: ...tobaud mode Excessive Loop Loss causing DSU to become stuck in Autobaud mode 1 Verify that your subscriber loop is running at 56 or 64 CC kbps 2 Verify that the DSU is set to the same rate as your sub...

Страница 60: ...ort Options Table A 3 User data on DTE port User Interface Terminal Port Options Table A 4 Management Port Options Table A 5 External Device Options Table A 6 Telnet Sessions Options Table A 7 Access...

Страница 61: ...Options Menu For System Options refer to Table A 1 To access the System Options screen follow this menu selection sequence Main Menu Configuration Load Configuration From Edit System Table A 1 System...

Страница 62: ...signal is detected LADS Timing Possible Settings Internal External Receive Default Setting Internal Determines the timing source for the unit LADS Timing option appears when Operating Mode is set to L...

Страница 63: ...apter 7 NOTE Tests commanded by the DTE or network initiated tests are not affected by this test timeout Test Duration min Possible Settings 1 120 Default Setting 10 Number of minutes for a test to be...

Страница 64: ...rambling is used to suppress the possible simulation of network initiated DSU latching loopback commands by application data Data Scrambling 64K CC option appears when Operating Mode is set to DDS in...

Страница 65: ...Clear Clears the IMC Subnet Mask and sets to all zeros When the subnet mask is all zeros the device creates a default subnet mask based on the class of IP address Class A defaults to 255 000 000 000...

Страница 66: ...e condition is detected Disable No ASCII alarm is generated NOTE Additional settings are required to send out an ASCII alarm Refer to the Alarm Messages section in Chapter 8 Out of Frame Alarm Possibl...

Страница 67: ...g condition is detected on the network interface an ASCII alarm is generated In Band Framing Alarm option does not appear when the In Band Management Channel Rate bps is disabled Enable Generates an A...

Страница 68: ...he Interchange Circuits specified by the V 54 standard NOTE Refer to the Loopbacks section of Chapter 7 Disable No local or remote loopbacks can be initiated by the DTE Local A local loopback can be c...

Страница 69: ...lead without delay regardless of alarms and tests Forced On CTS is always forced on after the unit is powered up with a successful self test Circuit Assurance With circuit assurance CTS operates the...

Страница 70: ...rface Options Menu The User Interface Options Menu includes the following Terminal Port Options Table A 4 Management Port Options Table A 5 External Device Options Table A 6 Telnet Session Options Tab...

Страница 71: ...erminal port Login IDs are created with a password and access level Enable Security is enabled When ATI access is attempted through the Terminal port a screen appears that requires a Login ID and pass...

Страница 72: ...ting 5 Number of minutes of inactivity before the ATI session terminates automatically Timeout is based on no keyboard activity Disconnect Time minutes option appears when Inactivity Timeout is enable...

Страница 73: ...port is always defined as a DCE This option setting forces the Management port to use external transmit clocking XTXC or TT from a connected device DTE Data Rate Kbps Possible Settings 2 4 4 8 9 6 14...

Страница 74: ...control lead Disable DTR is ignored Some external device connections may require this setting Routing Information Protocol Possible Settings None Proprietary Default Setting None Specifies the routing...

Страница 75: ...al Device Commands is set to AT no other options in this table will appear Other Commands configured by the user are sent out the Management port Dial In Access Possible Settings Enable Disable Defaul...

Страница 76: ...n an external device connection is established the Escape Sequence can be used to switch an external device to command mode before sending the disconnect command Refer to Escape Sequence Delay sec for...

Страница 77: ...on Options To access the Telnet Session Options screen follow this menu selection sequence Main Menu Configuration Load Configuration From Edit User Interface Telnet Session Table A 7 Telnet Session O...

Страница 78: ...el provides the effective access level and overrides the access level of a Login ID NOTE Refer to the ATI Access section of Chapter 4 for access level details Inactivity Timeout Possible Settings Enab...

Страница 79: ...eady established via an external DCE If an external device is connected to the Management port with no active connection the message control is based on the next option Alarm Trap Dial Out External De...

Страница 80: ...ay Time min and Alternate Dial Out Directory affect the amount of time before a retry and the number of retries Disable No retry of an unsuccessful call Dial Out Delay Time min Possible Settings 1 2 3...

Страница 81: ...for the Management Port IP Address to be effective 000 000 000 000 223 255 255 255 Sets the Management port IP address The range for the first byte is 000 to 223 with the exception of 127 The range f...

Страница 82: ...r Default Setting 000 000 000 000 Specifies the alternate subnet mask used to access the Management port Used with the previous option Alternate Management Port IP Address 000 000 000 000 255 255 255...

Страница 83: ...cess a MIB object Level of access is set in the next option Name 1 Access ASCII Text Enter a maximum of 255 ASCII printable characters Refer to the ASCII Characters section Clear Clears the Community...

Страница 84: ...onfiguration From Edit SNMP Communication SNMP NMS Security Table A 11 SNMP NMS Security Options 1 of 2 NMS IP Validation Possible Settings Enable Disable Default Setting Disable Determines if securit...

Страница 85: ...enticationFailure trap is generated 000 000 000 000 223 255 255 255 Sets the NMS IP address The range for the first byte is 000 to 223 with the exception of 127 The range for the remaining three bytes...

Страница 86: ...tting 1 Sets the number of SNMP management systems that will receive SNMP traps 1 to 6 Number of trap managers An NMS IP address is required for each manager Trap Manager n IP Address Possible Setting...

Страница 87: ...is option is used to determine if SNMP traps are generated for link up and link down for one of the communication interfaces Disable No linkUp or linkDown SNMP traps are generated Up A linkUp trap is...

Страница 88: ...Refer to the Entering Device and System Information section in Chapter 3 Device Name field System Name field System Location field System Contact field Call Directories screen Refer to the Call Setup...

Страница 89: ...Connects Indication String option Escape Sequence option Disconnect String option Table A 13 ASCII Non Printable Characters Sequence ASCII Hex Sequence ASCII Hex A or a SOH 0x01 Q or q DC1 0x11 B or...

Страница 90: ...ssible menu selections are displayed with the default settings and the possible settings Configuration Worksheets System Configuration Option Settings Default in Bold Operating Mode DDS LADS DDS Line...

Страница 91: ...ocol None Proprietary Cross Pair Detection Alarm Enable Disable No Signal Alarm Enable Disable Out of Service Alarm Enable Disable Out of Frame Alarm Enable Disable Excessive BPV Alarm Enable Disable...

Страница 92: ...chronous Clock Source Internal External Data Rate Kbps 2 4 4 8 9 6 14 4 19 2 28 8 38 4 Character Length 7 8 Parity None Even Odd Stop Bits 1 1 5 2 Monitor DTR Enable Disable Routing Management Protoco...

Страница 93: ...00 000 223 255 255 255 Alternate Mgmt Port Subnet Mask 000 000 000 000 255 255 255 255 Default Network Destination None Mgmt IMC General SNMP Management SNMP Management Disable Enable Community Name 1...

Страница 94: ...erfaces Group Objects Supported for the DDS network interface User Data DTE port Terminal port Management port and the IMC as defined in RFC 1573 the Evolution of the Interfaces Group Interfaces Group...

Страница 95: ...able Objects Not supported for the Terminal port Input Signal Table Objects Not supported for the Management port or Terminal port Output Signal Table Objects Not supported for the Management port or...

Страница 96: ...naged unit 1 ASCII character string as set by the user sysName system 5 Provides an administratively assigned name for this managed unit 1 ASCII character string as set by the user sysLocation system...

Страница 97: ...er tables as well When an unsupported index is entered e g 3 and 5 noSuchName is returned Indexes and values 1 Management port 2 Terminal port 4 DDS network interface 6 User Data DTE port 7 In band Ma...

Страница 98: ...nk v35 45 Used for the User Data port ifMtu ifEntry 4 Identifies the largest datagram that can be sent or received on an interface Management port or IMC Number of octets ifSpeed ifEntry 5 Provides th...

Страница 99: ...ed on the current state of the physical and link layer protocols up 1 Operational and no active test on the DDS network interface down 2 Not operational or disabled testing 3 Test active on DDS networ...

Страница 100: ...upports only the following objects Table C 3 Extension to Interface Table ifXTable Object Description Setting Contents ifName ifXEntry 1 Provides name of the interface Interface text strings Managemen...

Страница 101: ...Channel is set to the ifIndex of the DDS network interface All other ifStackLowerLayer objects will have a value of zero ifStackStatus ifStackEntry3 Specifies the stack group s status compared to the...

Страница 102: ...the test in progress on the interface testLoopDTE ifTestType 2 Starts a Local Loopback DTE on the interface testMon511 ifTestType4 Starts a Monitor 511 test on the interface testSend511 ifTestType6 S...

Страница 103: ...r each IP address supported by the device If the same IP address is configured for multiple interfaces or for default IP addresses the ipAddrTable will not display all of the interfaces that support a...

Страница 104: ...Defaults to 1 hop ipRouteType Defaults to indirect ipRouteMask Defaults to what is specified in the MIB description Objects that are not used by this unit ipRouteMetric2 ipRouteMetric3 ipRoutemetric4...

Страница 105: ...through other Internet standard MIB definitions rather than within MIB II Table C 7 Transmission Group Objects Object Description rs232 transmission 33 Supported on the User Data port Management port...

Страница 106: ...User Data port which is compatible with the V 35 standard rs232PortInSig Number rs232PortEntry 3 Contains the number of input signals in the input signal table that can be detected The value is 2 for...

Страница 107: ...ured for asynchronous operation The following are not supported rs232PortInFlowType rs232PortEntry 7 rs232PortOutFlowType rs232PortEntry 8 Asynchronous Port Table Objects The Asynchronous Port Table O...

Страница 108: ...ow Table C 10 Synchronous Port Table Objects 1 of 2 Object Description Setting Contents rs232SyncPort ClockSource rs232Sync PortEntry 2 Specifies the clock source for the port Supports only the follow...

Страница 109: ...ttern rs232SyncPortEntry 13 rs232SyncPortMinFlags rs232SyncPortEntry 14 Input Signal Table Objects The Input Signal Table Objects contains entries for the input signals that can be detected by the uni...

Страница 110: ...rs232OutSigEntry 2 Contains the identification of a hardware output signal Supports only the following values cts 2 Clear To Send dsr 3 Data Set Ready dcd 6 Received Line Signal Detector rs232OutSigS...

Страница 111: ...1 area customer2 to customer1 7 Copy from factory area to active area There is only one factory area for the unit factory1 to active 8 Copy from factory area to customer 1 area factory1 to customer1 9...

Страница 112: ...veral enterprise specific traps authenticationFailure warmStart linkUp linkDown Trap authentificationFailure SNMP Trap Description Possible Cause authenticationFailure Failed attempts to access the un...

Страница 113: ...ssible Cause Physical Sublayer Represented by the entry in the MIB II Interfaces Table DDS network Supported by the media specific DDS Enterprise MIB ifIndex RFC 1573 ifAdminStatus RFC 1573 ifOperStat...

Страница 114: ...nterpriseDeviceFail 3 An internal device failure Operating software has detected an internal device failure enterpriseTestStart 5 A test is running At least one test has been started on an interface e...

Страница 115: ...ayer DDS network ifIndex RFC 1573 ifAdminStatus RFC 1573 ifOperStatus RFC 1573 ifType RFC 1573 ddsTestType DDS Enterprise MIB enterpriseTest Start Any one of the following tests is active on the inter...

Страница 116: ...ling Overview The following sections provide pin assignments Terminal Port EIA 232 Connector Management Port EIA 232 Connector V 35 User Data Port Connector Standard EIA 232 D Crossover Cable LAN Adap...

Страница 117: ...Detect CD From DSU Out 8 Data Terminal Ready DTR To DSU In 20 Management Port EIA 232 Connector The following table shows the signals and pin assignments for the Management port connector Signal Dire...

Страница 118: ...a Set Ready DSR 107 From DSU Out E Received Line Signal Detector RLSD or LSD 109 From DSU Out F Data Terminal Ready DTR 108 1 2 To DSU In H Remote Loopback RL 140 To DSU In N Local Loopback LL 141 To...

Страница 119: ...nt port to an external modem Pin 1 Pin 14 Pin 13 Pin 25 Pin 1 Pin 14 Pin 13 Pin 25 P2 Plug Chassis Ground TXD RXD RTS DSR Signal Ground CD RLSD RXC DTR XTXC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1...

Страница 120: ...e Ground Unused Plug to Modular Jack Plug to LAN Adapter 496 15179 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Tx Clock Rx Data Signal Ground Tx Data DTR CD RTS Rx Clock Management Port DB25 Plug 8 Position Modul...

Страница 121: ...a valid DDS network signal is detected The auxiliary communications port on a router Bipolar Violation A modified bipolar signaling method in which a control code is inserted Circuit Card Assembly A p...

Страница 122: ...ical communication systems that originate from the United States A switching interface that is designed to get frames from one part of the network to another as quickly as possible The capability to t...

Страница 123: ...e original MIB I A method for interleaving several access channels onto a single circuit for transmission over the network Network Management System A computer system used for monitoring and controlli...

Страница 124: ...In a subnetted network the host portion of an IP address is split into a subnet portion and a host portion using a subnet address mask This allows a site to use a single IP network address for multipl...

Страница 125: ...3 option areas 3 3 3 4 option tables A 1 A 26 option worksheets B 1 B 4 configuration examples 1 3 connectors rear panel E 1 E 5 control menu 2 2 2 3 create login ID 4 2 crossover EIA 232 cable E 4 CT...

Страница 126: ...otocols 1 3 5 1 5 4 login ID 4 1 4 3 loopbacks 7 3 7 7 M main menu 2 2 2 3 A 1 A 2 management of SNMP DSU 1 1 port access 4 1 4 5 port options A 1 A 13 A 17 messages alarm and device 8 1 8 6 health an...

Страница 127: ...6 features 1 4 1 6 setup traps 8 3 system entries 3 1 traps 3 5 7 1 D 1 D 4 SNMP communication options A 1 A 22 start up ATI 2 1 instructions See Document 7610 A2 GN10 statistics of network performan...

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