Use this command to display SNMP traffic counter values:
show snmp counters
System(su)->show snmp counters --- mib2 SNMP group counters: snmpInPkts = 396601 snmpOutPkts = 396601 snmpInBadVersions = 0 snmpInBadCommunityNames = 0 snmpInBadCommunityUses = 0 snmpInASNParseErrs = 0 snmpInTooBigs = 0 snmpInNoSuchNames = 0 snmpInBadValues = 0 snmpInReadOnlys = 0 snmpInGenErrs = 0 snmpInTotalReqVars = 403661 snmpInTotalSetVars = 534 snmpInGetRequests = 290 snmpInGetNexts = 396279 snmpInSetRequests = 32 snmpInGetResponses = 0 snmpInTraps = 0 snmpOutTooBigs = 0 snmpOutNoSuchNames = 11 snmpOutBadValues = 0 snmpOutGenErrs = 0 snmpOutGetRequests = 0 snmpOutGetNexts = 0 snmpOutSetRequests = 0 snmpOutGetResponses = 396601 snmpOutTraps = 0 snmpSilentDrops = 0 snmpProxyDrops = 0 --- USM Stats counters: usmStatsUnsupportedSecLevels = 0 usmStatsNotInTimeWindows = 0 usmStatsUnknownUserNames = 0 usmStatsUnknownEngineIDs = 0 usmStatsWrongDigests = 0 usmStatsDecryptionErrors = 0