[mrtg] Mrtg with snmpV3

[Croulder Croulder]

HI,

I have the next problem:

I want connect to a Cisco 4948 Multilayer switch with snmpv3 and when
i try to do .cfg file cfgmaker say:

SNMPWALK Problem for 1.3.6.1.2.1.1 on public at x.x.x.x::::::v4only: No
response from remote host 'x.x.x.x' at /usr/local/mrtg-3/bin/cfgmaker
line 940
WARNING: Skipping public at x.x.x.x: as no info could be retrieved

My command line:

/usr/local/mrtg-3/bin/cfgmaker --global "Language: spanish" --global
"WorkDir: /home/mrtg/temporal" --global "Options[_]: bits,growright"
--output /home/mrtg3/cfg/sr-01.cfg --show-op-down --ifref=name
--enablesnmpv3 --authprotocol=md5 --username=AAAAA
--authpassword=AAAAA  x.x.x.x

x.x.x.x = switch ip

perl version = 5.8.4
my kernel dont have ipv6 support

help!! :)