h3cRS485SessionLocalPort 1.3.6.1.4.1.43.45.1.10.2.109.2.2.1.6

Local socket port. When session type is 'udp', this is local UDP socket port. When session type is 'tcpClient', this is invalid, it will return 0. When session type is 'tcpServer', this is the local port which will be listened.