But the IP address have limited resource, this paper introduces the formers of IP address and sub-netaddress.
由于IP地址资源有限，本文介绍IP地址的格式，并且说明怎样进行IP地址的分配和子网地址的划分。
2
IP-based location awareness USES the user's network information, including subnet, net mask, and the Mac address of the router.
基于IP的位置识别利用了用户的网络信息，包括子网、网络掩码和路由器的mac地址。
3
Name, address, contact and person in charge of the direct selling enterprises and their branches, and name, address, contact and person in charge of the service net;