Problem with Detect SNMP in MIKROTIK ROUTER BOARD RB750G

some times a day I have problem to detect SNMP in MIKROTIK ROUTER BOARD RB750G , when i use network monitoring for example OpManager , Solarwins, PRTG and etc otfen i have problem to this issue. what shall i do? :frowning:
for your information , Cable - Configure - Setting are OK.

  1. Make sure /snmp is enabled.
  2. Make sure SNMP packets are not filtered.
  3. Check RB750G routing configuration and confirm, that SNMP packets enters/exits router via the same interface/gateway.