Re: net-snmp 5.3.1 snmptrapd doesn't log traps

On 18/08/06, Bruce Penrod <[email protected]> wrote:
> I've been using ucd-snmp for several years and recently upgraded to
> net-snmp for its IPV6 capabilities.

Which version of Net-SNMP are you using?

>                            However I'm running into a problem
> with snmptrapd.  It doesn't seem to want to log the traps it receives,
> and it does receive them.  In fact, it even responds to informs that it
> receives as well.  I can tell this by using the -d command line
> argument.

That sounds very much like the new trapd access control.
By default, trapd won't accept anything unless it's configured to allow it.


>      I haven't figured out any combination of switches to get it
> to print the trap info anywhere.  Here is how I invoke it, with no
> snmptrapd.conf file:
>
> snmptrapd --authcommunity="log trappists" -Lo -d -n -f -m ALL -Os
> udp6:162 udp:162

I haven't personally tried '--authcommunity' as a command-line option,
but that ought to work.
A couple of things to try:

    a)  create an snmptrapd.conf file, containing
             authcommunity   "log trappists"
         and run snmptrapd using that.

   b)  try using a community string that doesn't contain white space
           That shouldn't cause any problems, but it's worth checking

   c)  look closely at the packet dump of the incoming trap.
        Does it contain the "log trappists" string?

The dump should start with something like:

0000: 30 xx 02 01  00 04 0D 6C  6F 67 20 74  72 61 70 70    0......log trapp
0016: 69 73 74 73  xx xx xx xx  xx xx xx xx  xx xx xx xx    ists............

(or possibly 30 xx 02 01 01 ....)
Is that what you're seeing?


Dave

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