Hi,

In some cases, the default value of 5 for the 

ZBX_SNMP_DEFAULT_NUMBER_OF_RETRIES

parameter is not suitable. Sometimes it is not worth repeating the request more than once. And sometimes, on the contrary, you need to increase their number in case of an unreliable network or a long response. It would be very nice to make this parameter configurable through the interface settings, or at least through the server/proxy configuration file. 
It is also worth noting that this parameter affects two retries at once:

• retry for same OID in one walk
• retry for different OIDs in row in one walk

Perhaps it makes sense to separate them.