1-8z An extended linkUp/linkDown trap is the standard linkUp/linkDown trap (defined in RFC) appendedwith interface description and interface type information. If the extended messages are notsupported on the NMS, disable this function to let the device send standard linkUp/linkDown traps.z If the sending queue of traps is full, the system will automatically delete some oldest traps toreceive new traps.z The system will automatically delete the traps whose holding time expires.Displaying and Maintaining SNMPTo do… Use the command… RemarksDisplay SNMP agent systeminformation, including thecontact, location, and version ofthe SNMPdisplay snmp-agent sys-info[ contact | location | version ]*Display SNMP agent statistics display snmp-agentstatisticsDisplay the SNMP agentengine IDdisplay snmp-agentlocal-engineidDisplay SNMP agent groupinformationdisplay snmp-agent group[ group-name ]Display basic information of thetrap queuedisplay snmp-agent trapqueueDisplay the modules that cansend traps and whether theirtrap sending is enabled or notdisplay snmp-agent trap-listDisplay SNMPv3 agent userinformationdisplay snmp-agentusm-user [ engineid engineid |username user-name | groupgroup-name ] *Display SNMPv1 or v2c agentcommunity informationdisplay snmp-agentcommunity [ read | write ]Display MIB view informationfor an SNMP agentdisplay snmp-agentmib-view [ exclude | include |viewname view-name ]Available in any viewSNMPv1/SNMPv2c Configuration ExampleNetwork requirementsz As shown in Figure 1-3, the NMS connects to the agent through an Ethernet.z The IP address of the NMS is 1.1.1.2/24.z The IP address of the agent is 1.1.1.1/24.z The NMS monitors and manages the agent using SNMPv1 or SNMPv2c. The agent reports errorsor faults to the NMS.
