COMSPHERE 3600 Series Data Service Units6-56 July 1999 3610-A2-GB91-90Table 6-18(1 of 2)LPDA-2 Configuration OptionsLPDA-2: DisabNext Enab Disab PrevLPDA-2 Operation. Allows the DSU to respond to LPDA-2 commands issued from NetView. Thisconfiguration option must be enabled at the control DSU and each tributary DSU for proper SNA DiagnosticInterface operation.When a disruptive test is running at the control DSU, the FEP reports Test in Progress to the NetViewoperator when the operator issues an LPDA-2 command. If the Test Mode (TM) jumper at the control DSU isdisabled, the control DSU may respond to an LPDA-2 command while running a test initiated by the NMS orDCP. (The LPDA-2 command cannot propagate any farther than the control.) However, if the control DSU isperforming a Device Test or an End-to-End test, it ignores any NetView-initiated command.Enab — The 3600 Series DSU responds to LPDA-2 commands. When enabled, it is recommended thatDSR FrcOn be set to Enab and CTS Cntrl set to RTS.Disab — The 3600 Series DSU does not respond to LPDA-2 commands.LPDA Address: 001Next Chang PrevLPDA Address. Allows the LPDA-2 address used by NetView to be set. Choices are 1 through 255, indecimal.The following rules apply to control DSU address assignment:1.Link Segment Level 1 (Primary Circuit). The control DSU closest to the NetView host is typicallyassigned the address 1.2.Link Segment Level 2 (Extended Circuit). The extended control DSU is typically assigned the address 2.The following rules apply to tributary DSU address assignment:1.Valid Addresses. Valid addresses for tributary DSUs range from 1 to 255.2.Single DTE. The tributary DSU address is set to the Physical Unit (PU) address of the attached terminaldevice. This constraint is imposed by NetView.3.Extended Circuit. For configurations having extended circuits, the tributary DSU in the primary circuit isset to 253. Address 253 (FD hex) is the broadcast LPDA-2 address.Order theCOMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Time Division Multiplexer,Multichannel Multipoint, and Digital Bridge Options, User’s Guide Supplement for additional addressing rulesapplying to TDM, MCMP, and digital sharing.
