As stated in the description of the sysName.0 MIB object in the SNMPv2-MIB, this command returns an administratively assigned name for this managed node. By convention, this is the node's fully qualified domain name. If the name is unknown, the value returned is the zero-length string.
For example:
% snmpget SNMP_agent sysName.0 sysObjectID.0 SNMPv2-MIB::sysName.0 = STRING: SUNSPHOSTNAME SNMPv2-MIB::sysObjectID.0 = OID: SUN-HW-TRAP-MIB::products.200.2.1.1
In addition to the sysName.0 object, this command displays the content of the sysObjectID.0 MIB objects. Notice that the MIB file name is given for each MIB object as part of the reply.
The following descriptions of the MIB objects are taken from the MIB files.
sysName – An administratively assigned name for this managed node. By convention, this is the node's fully qualified domain name. If the name is unknown, the value is the zero-length string.
sysObjectID – The vendor's authoritative identification of the network management subsystem contained in the entity. This value is allocated within the SMI enterprises sub-tree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining ”what kind of box” is being managed.