I started this thread with very little knowledge of net::snmp. I got some very good feedback and started working on a script that tries to use snmp to issue a 'copy run tftp' on a cisco router.
The script I am toying with is:

#!/usr/bin/perl -w 
use strict;
use Net::SNMP;

my $router = "10.8.10.133";
my $community = "secretstring";
my $tftpdir = "/company/configs/";
my $tftpserver = "10.15.145.15";
my $oid = ".1.3.6.1.4.1.9.2.1.55.";
$oid = "$oid$tftpserver";
my $s; my $e;

($s, $e) = Net::SNMP->session( -hostname => $router -community => $com
+munity );
my @param = qw($oid OCTET_STRING "host.cfg");
$s->set_request(@param);
$s->close;
[download]

When I run this code, I receive the following errors:

Argument "community" isn't numeric in subtraction (-) at ./tftp.pl lin
+e 14.
Argument "57.8.10.133" isn't numeric in subtraction (-) at ./tftp.pl l
+ine 14.
Odd number of elements in hash assignment at
/usr/lib/perl5/site_perl/5.6.0/Net/SNMP.pm line 196.
Can't call method "set_request" on an undefined value at ./tftp.pl lin
+e 20.
[download]

I am thinking that I am putting an incorrect ASN.1 value in my @param, but I am not sure. The errors I am seeing seem to imply that they are expecting a numeric value.
Can anyone comment on the right path to correct this?

humbly -c