The main differences between APN and VPDN

	VPDN	Apn
Security	Two authentication, encryption	One authentication, no encryption
Enterprise cost	High	Low
Requirements for GGSN	The dynamic configuration of the LNS parameter information is acceptable, which has little effect on GGSN performance.	The static configuration of GRE tunnel parameters, the performance impact is large, some manufacturers on the GRE tunnel has a number of restrictions.
Wireless Terminal address Assignment	Supports address assignment, which can be made by LNS or AAA	Can only be assigned by GGSN address
Application situations	Enterprises require a high level of security, the number of users, large-scale, need to distinguish between management users.	Small number of users, low maintenance

VPDN Concise Business Development process

(1) Understand user needs (user-owned intranet platform or proposed intranet platform system, requiring high safety factor),

(2) Signing VPDN cooperation Agreement,

(3) Fill in the application form for VPDN network,

(4) Apply for VPDN package (existing package, then the application package is decentralized, there is no package, you need to apply for a package),

(5) Open VPDN circuit and configuration PVDN data,

(6) Establish VPDN Group and open an account,

(7) Mobile terminal parameter setting and VPDN system access debugging,

(8) put into use.

The main differences between APN and VPDN