Paradyne COMSPHERE 6800 Series Communications Products Support Configuration Manual

Also see for COMSPHERE 6800 Series: Release note Release note Release note Installation and Enabling/Disabling Instructions Multiplexer Management and Configuration Guide

Paradyne COMSPHERE 6800 Series Communications Products Support Configuration Manual Manual pdf 18 page image

Managing Modems and DSUs1-96800-A2-GB20-20 January 1997Advanced Diagnostic NetworkThe Advanced diagnostic network uses a true tree topology. (A tree is composed of point-to-pointand multipoint circuits.) Note that the circuits are not designated as outboard, backbone andextended as in DATAPHONE II networks. In Advanced diagnostic networks, a circuit’s position isspecified by its level in the tree.Follow these guidelines when working with Advanced diagnostic networks:• Up to five circuit links can be cascaded in any combination of point-to-point or multipointcircuits.• Up to 256 local devices on each control channel can be supported by the NMS.• Up to 32 tributary modems (multipoint drops) can be polled by a control modem on itssecondary channel.• Up to 256 downstream devices can be polled by a tributary modem on its diagnosticchannel.• Multipoint circuits can be installed behind multipoint circuits. (Note that in a DATAPHONEII network, extended tail circuits are the lowest level in the diagnostic tree.)Each COMSPHERE device on the same diagnostic, secondary, and control channel must have aunique network address. If a control modem is connected to the NMS control channel, the networkaddress of the modem must be added to the NMS poll list. If the control modem is located furtherdownstream, its network address must be added to the upstream tributary modem’s poll list. Eachdevice must have a device profile in ADp mode.NOTEThe ADp mode in which the Advanced diagnostic network operatesrequires the long-form addressing scheme. Therefore, the addressof each intermediate tributary modem must be included in theaddress. For more information on addressing, refer to Appendix D ofthe COMSPHERE 6800 Series Network Management SystemUser’s/System Administrator’s Guide.Changing Protocol ModesAs your type of diagnostic network changes, you must change the diagnostic protocol mode inwhich your devices operate. When you created device profiles, you indicated a device’s link-leveladdress and protocol mode. Unless this information has been changed locally at a device, theprofiles have remained synchronized with the devices.There are two ways in which the protocol mode can be changed: from the NMS or from thedevice’s front panel. The method of synchronization is different for these two choices.