SNMP not working for Centos7 and some other devices

Hello Folks!

I have just built CHR with the dude to replace the server 2008 based v3.6 dude.

There arrived problems after a few hours work, simple SNMP attributes that v3.6 of the dude picked up is not at all working in the new dude 6.36.3.
In some devices like Centos7 can be snmpwalked but nothing appairs “inside” the device beneath SNMP tab, neither in appearance if I add it there.

For example Centos7 server, which works with SNMP in v3.6 is not working at all with v6.36.3, if I do snmp walking v3.6 show a LOT more details than v6.36.3.
I also snmp walked asa5510, it does not show up anything at all using v6.36.3 but v3.6 show lot of details.

Our monitoring is dependent on SNMP for monitoring other devices than mikrotik devices.

Anyone who have some suggestions ?

I found the solution for Centos 7, it was simply /etc/snmp/snmpd.conf settings which did not allow a certain IP address to read the community.
However the ASA5510 still remains.