To change which VLANs need to access the port from the IVM, simply change the trunk-allowed VLANs Numbers.
要想改变从ivm访问这个端口所需的VLAN，只需修改允许聚合的vlan号。
2
Implement basic switch security (including: port security, trunk access, management vlan other than vlan1, etc.)
实施基本的交换机安全策略(包括：端口安全、聚合访问、除VLAN1之外的其他VLAN的管理等等)。
3
At the end of 2008, the first 50,000-ton container berth of Gaolan port was put to trial. It symbolized the key step forward in transition from a feeder port to a trunk line port.