snmp

hi 

Just after -20mins cleaning up statistics, the output is below... what is your ideas? and how can be determined about the polling Method from Column-by-Column or Row-by-Row?

SNMP statistics:
  Input:
    Packets: 1616, Bad versions: 0, Bad community names: 1007,
    Bad community uses: 0, ASN parse errors: 0,
    Too bigs: 0, No such names: 0, Bad values: 0,
    Read onlys: 0, General errors: 0,
    Total request varbinds: 5939, Total set varbinds: 0,
    Get requests: 439, Get nexts: 170, Set requests: 0,
    Get responses: 0, Traps: 0,
    Silent drops: 0, Proxy drops: 0, Commit pending drops: 0,
    Throttle drops: 0, Duplicate request drops: 0
  V3 Input:
    Unknown security models: 0, Invalid messages: 0
    Unknown pdu handlers: 0, Unavailable contexts: 0
    Unknown contexts: 0, Unsupported security levels: 0
    Not in time windows: 0, Unknown user names: 0
    Unknown engine ids: 0, Wrong digests: 0, Decryption errors: 0
  Output:
    Packets: 2793, Too bigs: 0, No such names: 0,
    Bad values: 0, General errors: 0,
        Get requests: 0, Get nexts: 0, Set requests: 0,
    Get responses: 609, Traps: 2184
  Performance:
    Average response time(ms): 18.49
Number of requests dispatched to subagents in last:
      1 minute:46, 5 minutes:123, 15 minutes:279
Number of responses dispatched to NMS in last:
      1 minute:46, 5 minutes:123, 15 minutes:279