OID of the ARP table is 188.8.131.52.184.108.40.206. Can you check this is available on the device?
many thanks for your answer.
When trying to snmpget the oid I only get this:
"IP-MIB::ipNetToMediaTable = No Such Object available on this agent at this OID"
Any other suggestion?
Maybe I should ask cisco guys too.
Thanks in advance
It looks like your device doesn't support the ipNetToMediaTable. This may be because it is older and needs updating or it is very new and the ipNetToMediaTable support has been removed in favor of the ipNetToPhysicalTable. Contact Cisco to find out for sure. Upgrading the Switch Port Mapper to support the ipNetToPhysicalTable is on our roadmap but I am not allowed by company policy to provide any dates for future releases.
The device may not provide the table. You should check that in the documentation for it.
Switch Port Mapper allows you to set another device than the switch as layer 3 device. Have you tried that?