09-13-2009 03:42 PM - edited 03-06-2019 07:42 AM
Hello,
we have a setup where our monitoring box has to go through a linux box to get to 3560 to get snmp data, so i have a DNAT setup.
For some strange reason snmpwalk always times out on the same spot.
Right after
IF-MIB::ifHCOutBroadcastPkts.10152 = Counter64: 0
And before
IF-MIB::ifLinkUpDownTrapEnable.1 = INTEGER: enabled(1)
every single time.
snmpwalk -t 60 -v2c udp:linux_box:16108 -c community
(port 16108 DNAT'd to 161/udp)
everything works fine if i go to the switch directly
I figured i could use snmp over tcp, but it does not look like this switch even supports it...
does anyone know how to enable this?
thanks
09-13-2009 08:43 PM
SNMP over TCP is not supported. This sounds like some kind of buffer problem with Linux's DNAT module.
Since it looks like you're using net-snmp, you might try using its SNMP Proxy capabilities instead of DNAT. You just need to run the net-snmp snmpd on the Linux box.
See http://net-snmp.sourceforge.net/wiki/index.php/Snmpd_proxy on how to configure the proxy.
09-15-2009 07:31 AM
thank you so much! this solved my problem!
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