Re: [pysnmp-users] SNMP not getting a value

[Ilya E. <il...@gl...>]

A non-empty "errorIndication" means request failure, in your case - 
requestTimeout, what leads to empty result.

SNMP protocol supports 32-bit width integers so 2^32 values will pass 
through.

>From your description it looks like your SNMP Agent is sometimes slow 
responding to your requests. You may want to try increasing timeout value 
in your SNMP Manager script:

UdpTransportTarget(
  transportAddr,
  timeout,
  retries
)

-ilya

[ skipped ]

> The code to get a value is:
> --------
> newmibs=tuple(newmibs)
> errorIndication, errorStatus, errorIndex, varBinds =
> apply(cmdgen.CommandGenerator().getCmd,(cmdgen.CommunityData('my-agent',PASSWD,0),cmdgen.UdpTransportTarget((IP, PORT))) + newmibs)
> print varBinds
> print errorIndication,errorStatus,errorIndex
> --------
> 
> If it's working I get:
> --------
> [(ObjectName('1.3.6.1.2.1.2.2.1.4.1'), Integer32('1500'))]
> None 0 0
> --------
> 
> If it's not working:
> --------
> ()
> requestTimedOut 0 0
> --------