ACCULINK 316x DSU/CSU1-4 December 1996 3160-A2-GB22-10SNMP is an industry-standard network managementsystem that is used to monitor network performance andstatus, and to report alarms (i.e., traps). To function,SNMP requires a manager consisting of a softwareprogram housed within a workstation; an agent consistingof a software program housed within a device (e.g.,3160/3164 DSU/CSU); and a MIB consisting of adatabase of managed objects, accessible to agents andcontrolled via SNMP, to provide network managementinformation.The 3160/3164 DSU/CSU supports a MIB that can beaccessed using SNMP protocol by external SNMPmanagers. The following MIBs are supported:• MIB II – Defines the general objects for use with anetwork management protocol in TCP/IP internetsand provides general information about theDSU/CSU. MIB II is backward-compatible withMIB I.• DS1/E1 MIB – Defines objects for managing DS1interfaces and supports the network and DTEdrop/insert T1 interfaces.• RS-232-like MIB – Defines objects for managingRS-232 type interfaces (e.g., RS-422, RS-423, etc.)and supports synchronous data ports andmanagement communication ports on theDSU/CSU.• Generic-Interface MIB Extensions – An extensionto MIB II that defines additional objects for controlof generic interfaces in MIB II. It supports controlof tests on the DSU/CSU’s T1 and synchronousdata interfaces that are not supported by otherMIBs.Two link layer protocols are supported for connectionto an external SNMP manager or network device,Point-to-Point Protocol (PPP) and Serial Line InternetProtocol (SLIP). The protocol type is configurable usingthe configuration options (see Appendix C, ConfigurationOptions).Communication with the external SNMP managementsystem can be through a serial connection on either theCOM port or the MODEM port. Only one port can beconfigured as the management link at one time. However,the 3160/3164 DSU/CSU can be accessed simultaneouslyby either the front panel or front panel emulation softwareon one port, and an SNMP management system on theother port. Users on the external SNMP manager can issue“Get” and “Set” SNMP commands to an object in theSNMP database maintained by the DSU/CSU. TheDSU/CSU can be configured to issue SNMP traps to theSNMP manager under various alarm conditions.ACCULINK 316x DSU/CSUPhysical DescriptionThe ACCULINK 316x DSU/CSU series of productsconsists of a standalone 2-port Model 3160 DSU/CSU, astandalone 4-port Model 3164 DSU/CSU and a 2-portcarrier-mounted Model 3161 DSU/CSU.Standalone Model 3160/3164 DSU/CSUsThe 3160/3164 DSU/CSUs are housed in a compact,standalone unit containing a front panel for control andmonitoring of the DSU/CSU and a rear panel forconnections. This standalone unit can be mounted on awall, an equipment shelf, or an RS-310-C equipmentcabinet with the optional wall-mount kit.3160/3164 DSU/CSU Front PanelThe 3160/3164 DSU/CSU front panel contains,• One 2-line, 16-alphanumeric character per lineliquid crystal display (LCD)• One 7-button keypad (three Function and fourdirectional keys)• Twelve light-emitting diodes (LEDs), five of whichare shared between the DSX-1 (DTE) Drop/InsertT1 interface and the data ports.• Six test jacksThe front panel is shown in Figure 1-1.3160/3164 DSU/CSU Rear PanelThe 3160/3164 DSU/CSU rear panel contains theconnectors required for the operation of the DSU/CSU(Figures 1-3 and 1-4). The connectors and their functionsare listed in Table 1-1.
