snmpset - communicates with a network entity using SNMP SET requests
snmpset [COMMON OPTIONS] AGENT OID TYPE VALUE [OID TYPE VALUE]...
snmpset is an SNMP application that uses the SNMP SET request to set information on a network entity. One or more object identifiers (OIDs) must be given as arguments on the command line. A type and a value to be set must accompany each object identifier. Each variable name is given in the format specified in variables(5).
The TYPE is a single character, one of:
- i
INTEGER
- u
UNSIGNED
- s
STRING
- x
HEX STRING
- d
DECIMAL STRING
- n
NULLOBJ
- o
OBJID
- t
TIMETICKS
- a
IPADDRESS
- b
BITS
Most of these will use the obvious corresponding ASN.1 type. 's', 'x', 'd' and 'b' are all different ways of specifying an OCTET STRING value, and the 'u' unsigned type is also used for handling Gauge32 values.
If you have the proper MIB file loaded, you can, in most cases, replace the type with an '=' sign. For an object of type OCTET STRING this will assume a string like the 's' type notation. For other types it will do "The Right Thing".
For example:
snmpset -c private -v 1 test-hub system.sysContact.0 s dpz@noc.rutgers.edu ip.ipforwarding.0 = 2
will set the variables sysContact.0 and ipForwarding.0:
system.sysContact.0 = STRING: "dpz@noc.rutgers.edu"
ip.ipForwarding.0 = INTEGER: not-forwarding(2)
If the network entity has an error processing the request packet, an error packet will be returned and a message will be shown, helping to pinpoint in what way the request was malformed.
snmpset takes the common options described in the snmpcmd(1) manual page. Note that snmpset REQUIRES an argument specifying the agent to query and at least one set of OID/type/value arguments, as described in there.