Typed representation of atomic ASN.1 data types. Some types are returned in more than one format for different uses. Some include a descriptive string built by the underlying C library.

An SNMP value together with its OID. Returned by the query routines snmpGet, snmpNext, and snmpWalk.

SNMP Protocol version. It is recommended to use the constants snmp_version_1, snmp_version_2c, and snmp_version_3.

The net-snmp C library on 64-bit OS X systems still uses 32-bit oid parts in the responses. Please make sure that the library produces sane results on your system by cloning the source code and running `make test`.

SNMPv1. The first SNMP standard, using cleartext passwords ("communities")

SNMPv2c. Updated SMI and wire protocol, but still uses communities.

SNMPv3. Same SMI and protocol as SNMPv2c; stronger authentication. Unimplemented.

Initialize the Net-SNMP library. This must be called before any other NetSNMP functions, and before starting extra threads, as the mib compiler is not thread-safe.

Simple community-authenticated SNMP get. Returns the object queried, or a descriptive error message.

Examples:

• snmpGet "localhost" "public" [1,3,6,1,2,1,1,1,0]
• snmpGet "tcp:localhost:5161" "mypassword" [1,3,6,1,2,1,1,1,0]

Simple community-authenticated SNMP getnext. Returns the first object after the OID queried, or a descriptive error message.

Examples:

• snmpNext "localhost" "public" [1,3,6,1,2,1,1,1,0]
• snmpNext "tcp:localhost:5161" "mypassword" [1,3,6,1,2,1,1,1,0]

Simple community-authenticated SNMP walk. Returns a list of objects, starting with the object after the OID queried, and continuing through all objects underneath that OID in the mib tree. On failure, returns a descriptive error message.

This implementation uses a series of next operations and is not very ressource friendly. Consider using snmpBulkWalk for better performance

Examples:

• snmpWalk snmp_version_2c "localhost" "public" [1,3,6,1,2,1,1]
• snmpWalk snmp_version_2c "tcp:localhost:5161" "mypassword" [1,3,6,1,2,1,1]

Same as snmpWalk but implemented with bulk requests

Examples:

• snmpBulkWalk "localhost" "public" [1,3,6,1,2,1,1]
• snmpBulkWalk "tcp:localhost:5161" "mypassword" [1,3,6,1,2,1,1]

Show ASNValue contents in a simple string, losing type differentiation. Callers should not rely on the format of the message returned, and this function may disappear in a future version.