Tran:3512 DSU/CSU User`s Manual:Ch9:DualVIEW
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1. 4 DOMAIN COMC D LINE D X LINE X CTRL 4 DESCRIPTION PROBABLE CAUSE NO CRITICAL ERROR NO PRBABLE CAUSE IDENTIFIED LOCAL DSU CSU REMOTE DSU CSU EXPECTED RLSD LOST AGE NO NO NO LINE QUALITY WORST GOOD 0 GOOD 0 GOOD 0 GOOD 0 GOOD 0 0 4 BIPOLAR CODE ERRORS AGE 0 0 0 15 15 MIN REINITIALIZATION AGE NO NO NO FAILURE ALARM AGE NO NO NO POWER OFF ALARM AGE NO NO NO DSU CSU FAILURE NO NO NO OUT OF SERVICE CODE AGE NO NO NO OUT OF FRAME CODE AGE NO NO NO DDS INITIATED LOOPBACK AGE NO NO NO SEE NEXT PAGE FOR REMOTE DTE INTERFACE SUMMARY 22 CMD gt Figure 9 4 Page 1 of 3 of the MLS Function The Domain diagram shows Link Segment 1 and if applicable to the line configuration Link Segment 2 The diagram includes the Domain Communications Controller and Line names and the Cluster Controller station and PU addresses The 3512s under test are displayed as highlighted boxes labeled D The Description Probable Cause field shows the type of error and the probable failing component if a line error occurs Parameter values that differ from the values in the Expected column are highlighted Dual VIEW 9 7 9 8 DualVIEW The Digital MLS Panel Page 1 of 3 displays the following fields RLSD Lost Age reports the time since the last link down condition was detected Age is the elapsed time since the last2. 8 128 9 144 10 160 The local and remote 3512 front panels display TRT CMD RCVD The TST LED indicates that the test was initiated 9 14 DualVIEW The digital TRT screen displays the following fields Type Model describes the device attached to Net View either 3512 Pn where Pn indicates the port number 1 4 or an IBM equivalent e g 5822 10 based upon the user selected type number in the 3512 xDUALVIEW main menu tree DSU CSU Address identifies the station address of both the local and remote device This address is the one that the user has entered in the device s DUALVIEW main menu tree Current Transmit Speed reports line or port speed depending on the DTE Config option When DTE Config Normal or BitSteal the reported speed corresponds to the DSU line rate When DTE Config Muxed the reported speed corresponds to the port s assigned channel rate Speed in Use NetView displays N A for this field RLSD Lost indicates whether link down has occurred during the test If so YES displays otherwise NO displays Line Quality reports the current line quality Bipolar Code Errors During Test reports the number of invalid bipolar code violations detected during the test Number of Blocks Received indicates the total number of blocks received during the TRT test Number of Blocks Received with One or More Errors indicates the total number of block errors received during the TRT test Using Modem Control MDMC
3. DSU CSU Management from NetView NetView supports the Modem Control MDMCNTL command to initiate and terminate restoral and the Modem and Line Status MLS and Transmit and Receive Test TRT diagnostic commands for DSU CSU and line management MLS and TRT are part of the Network Problem Determination Application NPDA Test command NPDA is also known as Hardware Monitor NPDA collects and stores data from physical resources in the network and issues alerts about problems Diagnostic Commands From NPDA the NetView operator can monitor transmission devices DSU CSUs and line conditions in the network NPDA commands are channel specific in a multiplexed environment each channel responds to NPDA commands independently Speed and EIA readings are reported on the port under test The MLS command lets you diagnose hardware errors and monitor remote EJA status When MLS is initiated by the NetView operator it is solicited when initiated by the FEP it is unsolicited MLS is similar to the Motorola NMS EIA Status Report If the device is configured for channel sharing EIA status can be reported for each port based on its address The remote address sent by NetView must match the highest six bits of the remote device s station address The address s lowest bits indicate the shared port as follows Address s Lowest Bits Port 00 1 01 2 10 3 11 4 The TRT command initiates a block error test that helps diagnose trans
4. loss was detected at least once in the last two minutes Test Control YES in the activity column indicates a V 54 Loop 3 Local Loop Back Wrap has terminated within the last two minutes Streaming Detected Age YES indicates that a port has been disconnected because RTS has been ON for an extended period of time If streaming occurs the age of the last streaming condition is displayed If the port is still streaming CURRENTLY appears as the age if RTS has dropped an age between 8 and 112 seconds is displayed NOTE To reconnect a port after a streaming condition is corrected use the Port Restore parameter MODIFY main menu MODIFY PORT category DTE Interface Error Age is not supported and always reports NO Digital MLS Panel Page 3 of 3 To view Page 3 of the digital MLS parameters press ENTER This panel provides a summary of 3512 configuration data Figure 9 6 is a sample of this panel NETVIEW SESSION DOMAIN CNMO1 NPDA 22C DSU CSU AND LINE STATUS PAGE 2 OF 3 CONFIGURATION SUMMARY LINK SEGMENT LEVEL 1 CNMO1 CDX024 LINE064 PU164 4 DOMAIN COMC D LINE D X LINE X CTRL 4 LINK CONFIGURATION POINT TO POINT LOCAL DSU CSU TYPE MODEL TEST MODE 3512 02 SOLICITED SPEED 56 0 KBPS NETWORK FUNCTION PRIMARY DSU CSU IN IDLE STATE NO LPDA MICROCODE CARD LEVEL 5 0 SERIAL NUMBER 0000124 TYPE OF LIN
5. CSU TYPE MODEL 3512 01 3512 04 DSU CSU ADDRESS 01 40 CURRENT TRANSMIT SPEED 56 0 KBPS 56 0 KBPS SPEED IN USE N A N A RLSD LOST NO NO LINE QUALITY GOOD 0 GOOD 0 BIPOLAR CODE ERRORS DURING TEST 0 0 NUMBER OF BLOCKS RECEIVED 16 16 RECEIVED WITH ONE OR MORE ERRORS 0 0 Figure 9 7 Sample TRT Panel Dual VIEW 9 13 NOTES e This test is interruptive it suspends requests issued to the 3512 until the test is completed However it does not disrupt user sessions Ina TDM configuration all channels are affected by the test e In Dual Management mode the Motorola NMS must reestablish control following a TRT If you attempt to execute a command from either network management system shortly after you requesting a TRT you may get a timeout message In this situation reissue the command e For DDS I applications when DTE Con Normal the MLS and TRT signaling causes DCD to toggle This toggling is reported in the MLS status screen To initiate TRT select the appropriate option number from the LPDA 2 Command menu and press ENTER or invoke the TRT command from NPDA The test is performed for 16 blocks of data which is the default value Alternately specify an option a shown in Table 9 1 NOTE In BitSteal and Muxed modes a low number 1 3 may cause the test to exceed acceptable timeout limits Table 9 1 TRT Block Exchange Specification Enter To Exchange 1 16 2 32 3 48 4 64 5 80 6 96 7 112
6. Chapter 9 DualVIEW Contents AONE ia pi gdh wi say eal ose nina un nd patie natant cereals 9 2 DualVIEW Operation LPDA 2 and the Motorola Control Channel 9 2 Network Topologies erriari uoin iced merarecamienizem vein wh EEN Senin camlen tition 9 3 Preparing to Use the Dual VIEW Management Feature eee 9 4 DSU CSU Management from NSU VIEW cicaiice nici on turn erotica 9 4 Diagnostic Commands ness ccnicacinensnuniierilinnnentauaasnias 9 5 Restoral Commands sinirine nioen iNET ER ESEN EPERE ATEEN tation 9 5 Netview Monitoring and Testing ssccsscstecsesnveiviaavssaness vies scansczsesicsivassotpiversicees 9 6 Modem and Line Status MLS heiii saan hind cae ndetansekpiie cucveaeeiveaaseiunes 9 6 Unsolicited MLS Command sosssccsssssscvactens cicansthieessdlasdatseriensiiadiaensedivarnties 9 6 SO Tee MLS Commmand coves ccesenryccamun serene alten shin ids ERN AET INERTE INER 9 6 Digital MLS Panel Page 1 Of 3 cssiscccsssveiccenosceussnsienscarsceoousressnnsvstossersibens 9 7 Digital MES Panel Pare 2 08 2 1 vesonswaniendelenien bein aaa 9 9 Digital MLS Panel Page Jof 3 ssssscsicusssiecoses peavsctaceunsvseemnssiceviivacirtne 9 11 Tionsmit aud Receive TRT LOSE secccccossskec ruin teczousnerrounerceetiescerinseetuassciees 9 13 Using Modem Control MDIMCN TL vissscs cscaiscssesssiosvoarsinoonsressnasrcnosnervicvy 9 15 MOMCNTL Syntax and Description scrisorii aa 9 15 Modifying the Network Control Program NCP isisciriisiiiesisssiisssrcersu
7. E DDS COMMAND RETRIED NO MANUAL TEST AGE NO DSU CSU ADDRESS 01 DTE INTERFACE CONNECTION DTE ERP CMD gt TBD1340 01 10 94 09 41 30 REMOTE DSU CSU 3512 08 SOLICITED 56 0 KBPS SECONDARY NO 5 0 0000116 DDS N A NO 40 DCE Figure 9 6 Page 3 of 3 of the MLS Function DualVIEW 9 11 9 12 Dual VIEW The Digital MLS Panel Page 3 of 3 displays the following fields Type Model Test Mode depends upon the NetView software version It may have been necessary to enter a model number other than 3512 at the front panel For details refer to the gt DUALVIEW section in Chapter 4 Test Mode identifies whether the most recent digital MLS command was initiated by an operator SOLICITED or by the controlling node UNSOLICITED Speed reports line or port speed depending on the DTE Config option With Normal or BitSteal the reported speed corresponds to the line rate With Muxed the reported speed corresponds to the port rate Network Function identifies the 3512 s place in the network topology On a point to point link the possible functions are PRIMARY and SECONDARY on a multi point link the possible functions are CONTROL and TRIBUTARY DSU CSU in Idle State indicates whether the 3512 is operating with a default station address of FF LPDA Microcode Card Level reports DualVIEW major and minor firmware levels respectively Serial Number identifies the 3512 s serial numb
8. LPDA 2 e 2 A NetView managed network with LPDA DSU CSU that is to be upgraded to include 3512s with the DualVIEW feature and LPDA 2 e 3 A NetView managed network with LPDA 2 DSU CSU that is to be upgraded to include 3512s with the Dual VIEW feature Dual VIEW 9 17 For Scenarios 1 and 2 if your 3512s are installed but LPDA has not been enabled in the NCP generation you can temporarily enable LPDA 2 on the first tier using the TYPE3 option in the LPDA command NOTE With TAILING YES LPDA cannot be dynamically changed using the LPDA command The sense code 0877 000C is displayed If on the other hand you have regenerated your lines to support LPDA 2 before installing and enabling your 3512s you can use the NCCF LPDA command with the NONE option to temporarily override LPDA support until you install your 3512s and enable Dual VIEW Then you can use the NCCF LPDA command with the TYPE3 option to reenable LPDA 2 communication The LPDA command allows you to dis able a whole line or individual drops on a multipoint line For Scenario 2 you can use the LPDA command to change LPDA support from TYPEI1 or TYPE2 to TYPE3 as long as the existing line is either point to point or multipoint and not multi tiered For a multi tiered line you must change the NCP generation to upgrade to LPDA 2 capability For Scenario 3 if you are using the existing NetView capabilities no NCP generation changes are necessary If your 3512s are installed and t
9. NTL From NetView the MDMCNTL command in NCCF is used to initiate and terminate switched analog restoral operations MDMCNTL Syntax and Description The MDMCNTL command syntax for 3512s is MDMCNTL ID major_node L ATION device_name LEVEL level MODEM modem_location CONNECT phone DISCONN where MDMCNTL ID specifies the major node major_node is the PU name 8 characters maximum of the front end processor responsible for passing the command to the local 3512 STATION specifies the controller device_name is the PU name 8 characters maximum of the controller at the end of the link with which the remote 3512 is associated Dual VIEW 9 15 9 16 Dual VIEW LEVEL specifies which tier of 3512s to change level is 1 the default or 2 It specifies the first or second tier respectively MODEM specifies which 3512 s to change modem_location is one of the following LOCAL specifies the 3512 device closest to the major node front end processor that issues the command to the link station This is the default REMOTE specifies the 3512 closest to the link station NOTE Always use the Local setting CONNECT initiates restoral operation This can be used only when Modem Local phone is the number of the remote device The phone number can contain digits and variable pauses The Pause Dly option specifies the pause length refer to Chapter 4 NOTE If the CONNECT command s phone field does not spec
10. RLSD loss it is reported in 8 second increments from 0 to 112 Line Quality Worst reports the current line quality in the form of a rating and index followed by the worst rating and index detected over the last two minutes Bipolar Code Errors Age reports the number of bipolar code errors detected in a 15 minute window A bipolar code error is defined as an invalid bipolar code violation which may be caused by impulse noise or a configuration mismatch Valid bipolar code violations are used in the DDS protocol to pass control and status information and are not included in this field Age is the elapsed time since the last bipolar code error reported in 8 second increments from 0 to 112 From two minutes until the end of the 15 minute window the age is reported as 2 min When 15 minutes have passed with no bipolar code errors Age is reported as 0 Reinitialization Age indicates whether DSU initialization power cycle or reboot occurred within the last two minutes Age is reported in 8 second increments to a maximum of 112 Failure Alarm Age is not supported and always reports NO Power Off Alarm Age is not supported and always reports NO DSU CSU Failure is not supported and always reports NO Out of Service Code Age indicates whether an out of service code has been received in the two minutes preceding the digital MLS command NetView reports N A for 3512s operating as limited distance modems LDMs Out of Frame Code Age i
11. al device converts the LPDA 2 command to Motorola s proprietary network management protocol and sends a command to the remote 3512 The remote 3512 answers with a response formatted in Motorola s network management protocol which the local device converts to LPDA 2 and forwards by way of the NCP to NetView When NetView s command response sequence is completed user data transmission continues A 3512 only responds to NetView or Motorola NMS commands it does not send unsolicited data In contrast both management systems send unsolicited polls Network Topologies Figure 9 2 shows a typical point to point configuration with two transmission devices managed independently by a NetView host and a Motorola NMS Commands Responses Primary NetView Host Ne Secondary Motorola t Control Management Channel Protocol Motorola NMS Figure 9 2 Dual Managed Point to Point Configuration The Point to Point Device that is NetView Identifies as Closer to host Primary More remote from host Secondary The primary device receives NetView commands directly from the front end processor FEP The secondary device receives them from the local device Use NV Ports to select port s on which to receive NetView commands Figure 9 3 shows a multipoint configuration with NetView and NMS management Control NetView N Cc D Host C VTAM j Motorola Management Le C
12. er Type of Line reports LDM or DDS This parameter displays the user configured values from the 3512 s DUALVIEW main menu tree Command Retried indicates whether the local 3512 has retried a command to the remote device Manual Test Age indicates any test or loopback not initiated from NetView DSU CSU Address identifies the station address as configured for both the local and remote 3512s For information on selecting an appropriate address refer to Chapter 4 Config Dual VIEW section DTE Interface Connection indicates whether the device s DTE interface is configured to be connected to a DTE or another transmission device DCE Transmit and Receive TRT Test 3512s report block errors in response to the TRT command This test checks line quality and transmission performance by causing a pair of 3512s to exchange a predetermined bit sequence The test is performed by a solicited user invoked command The number of bits per block varies with the digital line rate Line Rate Bits per Block 2400 bps 256 4800 bps 512 9600 bps 1024 19200 bps 2048 56000 bps 6144 Figure 9 7 shows a sample TRT panel NETVIEW SESSION DOMAIN CNMO1 TBD1340 01 10 94 09 45 NPDA 25B TRANSMIT RECEIVE TEST LINK SEGMENT LEVEL 1 PAGE CNMO1 CDX024 LINE064 40 PU164 4 DOMAIN COMC D LINE D X LINE X CTRL 4 LOCAL DSU CSU REMOTE DSU
13. he Dual VIEW feature is enabled 1 Perform NCP generation or use the NCCF LPDA command with the TYPE3 option to temporarily provide LPDA support and make changes to the NCP generation at a later time 2 From NetView use the NCCF LPDA command with the QUERY option to verify the generation for the line 3 Initiate the TRT function to test communication If your 3512s are not installed and you want to change the NCP generation prior to their installation do the following 1 Perform NCP generation 2 From NetView use the NCCF LPDA command with the QUERY option to verify the generation for the line 3 Use the NCCF LPDA command with the NONE option to discontinue LPDA 2 communication attempts until the Dual VIEW feature is installed and enabled in the 3512s This avoids error logs on unsolicited MLS commands 4 Install and enable the 3512s 5 From NetView use the NCCF LPDA command with the TYPE3 option to reenable LPDA 2 communication Initiate the TRT function to test communication 9 18 Dual VIEW
14. ify a phone number phone stored in the 3512 is dialed If CONNECT does specify a phone number then e If Restoral Method Integral If the phone field has a number it replaces the 3512 s phone 1 and the 3512 dials it If the phone field is empty the 3512 dials phone 1 If Restoral Method A B the phone field is ignored DISCONN terminates restoral operations and returns operation to the DDS line It can only be used with Modem Local NOTE LEVEL 1 and Modem Local are default values and can be omitted from the command CONNECT Example MDMCNTL ID PEP342A STATION P230731D CON NECT 9P1508261 4000 Specifies 9 pause 1 508 261 4000 as the telephone number that the local 3512 connects to to receive and transmit data respectively When the connect is received the front panel displays CNCT CMD RCVD DISCONN Example MDMCNTL ID PEP342A STATION P230731D DISCONN Disconnects the 3512 from the alternate line and connects on the primary line When the disconnect is received the front panel displays DISCNCT CMD RCVD Modifying the Network Control Program NCP This section should be used by the NetView systems analyst programmer or engineer or IBM field support personnel responsible for generating the NCP The NCP controls the flow of information between the FEP and the attached devices The FEP must be instructed to send and receive LPDA messages on a per port basis and must be provided with information ab
15. mission problems TRT is similar to the NMS or 3512 BER test NOTE The TRT command interrupts TDM channels in a multiplexed environment Restoral Commands From NetView s Network Communications Control Facility NCCF you can issue modem control commands The commands can enter the 3512 through any port that carries NetView traffic The MDMCNTL command manages restoral operation You can initiate terminate and configure restoral phone numbers with this command Dual VIEW 9 5 Netview Monitoring and Testing From NPDA you can perform the following tests to obtain information about the transmission device and the line status e Modem and Line Status MLS retrieves three panels of data including line status parameters like RLSD losses and remote EIA interface parameters and basic DSU CSU configuration data e Transmit and Receive TRT examines line quality and data error parameters This section explains the DSU CSU and link tests available through NPDA For information on accessing the NetView NPDA panels refer to the IBM documents NetView Operation Primer and NetView Operation Scenarios NOTE The NetView panels shown in this chapter are from NetView 1 3 The panels that appear on your NetView terminal may vary slightly from those shown Modem and Line Status MLS The MLS command reports device status and line data such as receive level line quality hardware errors remote EIA signals and an overview of config
16. ndicates whether an out of frame code has been received in the two minutes preceding the digital MLS command NetView reports N A for 3512s operating as LDMs DDS Initiated Loopback Age indicates whether the 3512 has been placed in a DSU CSU loopback in the two minutes preceding the digital MLS command While the loopback is in progress Age is reported as eight seconds NetView reports N A for 3512s operating as LDMs Digital MLS Panel Page 2 of 3 To view the Digital MLS Panel Page 2 of 3 Figure 9 5 press ENTER This panel reports the status of the remote 3512 s EIA signals NETVIEW SESSION DOMAIN CNMO1 TBD1340 01 10 94 09 41 30 NPDA 22C DSU CSU AND LINE STATUS PAGE 2 OF 3 REMOTE DSU CSU INTERFACE REMOTE DEVICE STATUS LINK SEGMENT LEVEL 1 CNMO1 CDX024 LINE064 40 PU164 DOMAIN COMC D LINE D X LINE X CTRL STATUS AT COMMAND ACTIVITY DURING TWO EXECUTION TIME MINUTES BEFORE COMMAND REQUEST TO SEND OFF NO CLEAR TO SEND OFF NO RECEIVED LINE SIGNAL DETECTOR N A YES DATA TERMINAL READY ON NO DTE POWER LOSS DETECTED OFF NO TEST CONTROL N A NO REMOTE DEVICE STREAMING DETECTED AGE NO DTE INTERFACE ERROR AGE NO SEE NEXT PAGE FOR LINK AND DSU CSU CONFIGURATIONS PER CMD gt Figure 9 5 Page 2 of 3 of the MLS Function The Status at Command Execution Time column Status indicates the sta
17. ontrol Channel Protocol Figure 9 3 Dual Managed Multipoint Configuration Tributaries A The Multipoint Device s that is NetView Identifies as Closest to host Control Remote from host Tributaries The flow of control is the same as for the point to point configuration above Dual VIEW 9 3 F SDC only 9 4 DualVIEW Dual Management mode allows for concurrent management from NetView and an NMS The devices respond to commands issued from either manager on a first come first served basis However the NMS is the dominant system With The Operator Can NMS Configure and monitor the device Monitor line status Initiate tests NetView Monitor the device Monitor line status Initiate tests In a DDS II SC network e LPDA is not supported on 3512s are managed by a Motorola NMS with DTE Con Muxed e LPDA is supported on 3512s without NMS management regardless of the DTE Con option Preparing to Use the DualVIEW Management Feature Initially the Dual VIEW feature must be configured from the 3512 front panel Chapter 4 describes Dual VIEW front panel parameters It may also be necessary to modify the NCP at the IBM host site to support the LPDA 2 management protocol and tail circuits for second tier lines See Modifying the Network Control Program at the end of this chapter NOTE Dual View is not available on the 3512 SDC Port 3 when P3 Compress
18. out the line configuration IMPORTANT The DualVIEW Management feature requires NCP revision 4 2 V4R2 or later to support the LPDA 2 protocol For information on Refer to Defining an NCP Network Control Program NCP System Support Programs configuration SSP and Emulation Program EP Resource Definition Guide NCP SSP and EP Resource Definition Reference Generating and loading NCP SSP and EP Generation and Loading Guide the Load Module System Configuration LPDA support for 3512s with the Dual VIEW feature is accomplished by re generating the NCP Making changes to the NCP generation is the most permanent means of defining your network configuration and LPDA communication From NCCE you can make some temporary changes to the LPDA definition statement with the LPDA command This command can enable LPDA communication without changing the NCP generation It can also temporarily override LPDA support already defined in the NCP generation until the 3512s have been installed and enabled in your network Changes made with LPDA remain in effect until e Another LPDA command is issued e An inactivity condition occurs e A procedure such as NCP reload or power cycle is initiated One of the following scenarios should describe your network before installation of Dual VIEW equipped 3512s e A NetView managed network with DSU CSU not using the LPDA protocol to be upgraded to include 3512s with the Dual VIEW feature and
19. tus ON or OFF of the DTE interface signals at the remote 3512 when the MLS command was executed The Activity During Two Minutes Before Command column Activity indicates whether the status of the DTE interface signals at the remote 3512 changed YES or NO within the two minutes preceding the execution of the MLS command Dual VIEW 9 9 9 10 Dual VIEW The Digital MLS Panel Page 2 of 3 displays the following fields Request To Send Status ON means that RTS is ON at the remote DTE interface Activity ON means that RTS has transitioned within the last two minutes Clear To Send Status ON means that CTS is ON at the remote DTE interface Activity YES means that CTS has transitioned within the last two minutes Received Line Signal Detector The Status column displays N A Activity YES means that DCD has transitioned within the last two minutes Data Terminal Ready Status ON means that the DTE is powered up and ready to transmit and receive data From a dial tail circuit ON may indicate that a call is in progress used in conjunction with DTR DSR control signaling described in Chapter 4 Activity YES indicates that DTR has transitioned at least once in the last two minutes DTE Power Loss Detected Status ON indicates that the DTE has lost power If DTR control signaling is enabled the field always reports OFF See Chapter 4 for information on the DTR control signal YES in the Activity column indicates that a DTE power
20. uration data This test can be either solicited user invoked or unsolicited system invoked Unsolicited MLS Command The FEP automatically invokes MLS when a predetermined throughput or retransmission threshold SRT is reached or when a shutdown or failure occurs The results of an unsolicited MLS are stored for analysis Solicited MLS Command You can initiate MLS from NPDA Enter Selection 1 from the LPDA 2 Command menu and press ENTER or invoke the MLS test command NOTES e An MLS is interruptive it suspends requests issued to the 3512 until the test is completed However it does not disrupt user sessions e For DDS I applications when DTE Con Normal the MLS and TRT signaling causes DCD to toggle This toggling is reported in the MLS status screen The front panels of the local and remote 3512s display MLS CMD RCVD indicating that the NetView command was received and accepted Refer to Chapter 3 for front panel display details The MLS function consists of three panels or pages e Page 1 Basic line and data failure conditions e Page 2 Remote EIAs e Page 3 Configuration overview 9 6 DualVIEW Digital MLS Panel Page 1 of 3 Figure 9 4 shows a sample of the digital MLS function Page 1 of 3 NETVIEW SESSION DOMAIN CNMO1 TBD1340 01 10 94 09 41 30 NPDA 22C DSU CSU AND LINE STATUS PAGE 1 OF 3 DSU CSU and LINE PARAMETERS LINK SEGMENT LEVEL 1 CNMO1 CDX024 LINE064 40 PU164 4
21. vessrsa 9 17 System Conn SS UAL DODD ae ciao nests wank does naia EEN ENER E ENESELE ITEA TEET 9 17 DualVIEW 9 1 Chapter 9 Overview 9 2 DualVIEW The DualVIEW management feature lets you control 3512 DSU CSUs from e IBM s NetView e A Motorola 9800 or 9300 Network Management System NMS e Both concurrently From NetView you can test and monitor a standard set of DSU CSU parameters DualVIEW is not available with 64k CC service DualVIEW Operation LPDA 2 and the Motorola Control Channel Link Problem Determination Aid Revision 2 LPDA 2 is the communications protocol used between host based NetView software and transmission devices for exchanging diagnostic and control information When a NetView operator issues a device related command NetView constructs a packet and routes it through VTAM at the host computer to the Network Control Program NCP at the front end processor Figure 9 1 The NCP creates an LPDA 2 command suspends user data transmission on the main channel without disrupting sessions and sends the LPDA 2 command out on the appropriate line IBM LPDA 2 Protocol Motorola Management Protocol _ gt NetView Host NE VTAM Motorola Management Protocol a Motorola NMS Figure 9 1 Network Management Command Flow The local transmission device recognizes the LPDA 2 command and matches the address in it with the device s assigned NetView address The loc
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