Error handling when getting multiple values (in Perl)

Hi!

A problem with snmpget for multiple values is error handling: You can find out that something went wrong, but not easily which of multiple requested values had a problem getting.

So I'm considering using Perl instead of a shell script. In Perl you can "$sess->get(<vars> [,<callback>])" to get multiple values, also. Unfortunately the error handling is no specified either:

---
       $sess->get(<vars> [,<callback>])
           do SNMP GET, multiple <vars> formats accepted.  for syncronous
           operation <vars> will be updated with value(s) and type(s) and will
           also return retrieved value(s). If <callback> supplied method will
           operate asyncronously
---

Can I sanely guess that "undef" will be returned where a value couldn't be got?

For efficiency I'd like to get as many values with one request as possible...

Regards,
Ulrich



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