SNMPTCPTrapMgr Class

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The SNMPTCPTrapMgr class provides a TCP-based listening point for SNMP traps.

Syntax

class ipworkssnmp.SNMPTCPTrapMgr

Remarks

The SNMPTCPTrapMgr class provides a TCP-based listening point for SNMP traps and informs as specified by the SNMP RFCs. The class supports v1, v2c, and v3 traps.

The class provides both encoding/decoding and transport capabilities, making the task of developing a custom SNMP Trap manager as simple as setting a few key properties and handling a few events. SNMP data, such as for instance SNMP object id-s (OID-s) are exchanged as text strings, thus further simplifying the task of handling them.

The class is activated/deactivated by setting the Active property. This property enables or disables sending and receiving.

Messages are received through events such as on_trap, on_inform_request, or on_discovery_request.

SNMP OIDs, types, and values are provided in the objects collection of SNMP objects for both sent and received packets.

SNMPv3 USM security passwords are requested through the on_get_user_password event, and event parameters such as User and SecurityLevel provide information about the security attributes of received requests, and enable granular decision capability about what to provide and what not to provide.

The add_user, remove_user, show_cache, clear_cache, add_engine, and remove_engine methods are used to manage an internal authentication cache. This internal cache can be used as an alternative to the on_get_user_password event, automatically checking the cache against the security parameters provided in the request signature.