Mackie V7.0 manual 269

Appendix SNMP Agent

The Xprint V7.0 objects supported by the SNMP agent are hosts, devices, device groups, servers, supervisors, gateways and jobs. For each of these objects, there is a table in the Xprint V7.0 MIB. These tables contain all the attributes displayed by the xpshow and xpstat commands for the corresponding objects. The description of each attribute can be found in the comments of the MIB file. The MIB file (Xprint V7.0-MIB.txt) is installed in the SNMP subdirectory of the Xprint V7.0 installation directory.

For all supported object types except jobs, the complete domain configuration is accessible. In the specific case of jobs, only jobs managed by local servers to the agent host are visible.

The purpose of this agent is the monitoring of Xprint V7.0 activity but not the administration. Therefore, only read access is allowed via SNMP agent. Moreover, no SNMP trap functionality is supported.

Be aware that objects from another domain (for instance the partner gateway...) are always shown as not active. The purpose of the SNMP agent is to monitor objects from the domain, not the objects from another one.

For efficiency, the Xprint V7.0 information is first completely stored in a "Cache area" responsible for collecting the complete definition and state of each supported object. This "cache" is notified about configuration updates except for hosts becoming "unreachable" due to system or network crash or devices in error but located on another host than the agent system. The latter situations are anyway detected via a polling mechanism.

The SNMP agent has also a copy of this information in order to boost access. This copy is automatically resynchronised with the "Cache" contents after a given delay.

The information accuracy is determined according to two extended options of the host object (where the SNMP agent is running):

–XP_CM_POLL_TIME: period for devices and hosts state refreshing in the "Cache" area. This time determines the maximum time before detection of a host no longer reachable or of a DEVICE_ERROR state occurring on another host than the SNMP system. The value must be a number expressing the time in seconds. The default value is "300" (5 min). A value "0" disables this refresh operation and could lead to incorrect states of devices and hosts.

–XP_CM_DISABLE_JOBS: When the monitoring of jobs via the SNMP agent is not requested, performances will highly improve. A non null value disable the monitoring of jobs and a value of "0" resets to the default behaviour. This option is only taken into account at startup.

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