code: def _login_snmp(self):
          
          logger.info("Trying to grab stats by SNMP...")
  
          from glances.stats_client_snmp import GlancesStatsClientSNMP
  
          # Init stats
          self.stats = GlancesStatsClientSNMP(config=self.config, args=self.args)
  
          if not self.stats.check_snmp():
              self.log_and_exit("Connection to SNMP server failed")
              return False
  
          return True
docs: Login to a SNMP server