Figure 2-1
Network access
Enterprise A
FE
Enterprise B
3G
AR
AR
AR
AR
Enterprise D
Enterprise C
E1/CE1
G.SHDSL
Internet
Internet
Internet
Internet
ADSL
2.2 VPN Access
The headquarters and branches use the ARs establish a VPN and connect to the Internet. The
enterprise establishes a VPN and uses GRE, or IPSec VPN to ensure data security. The
employees on a business trip use IPSec VPN tunnels to communicate with the headquarters.
As shown in
Figure 2-2
, the headquarters is connected to the Internet by using the
AR2200&3200, and provides services for all employees. The LAN of the branch connects to
the Internet by using the AR1200-S, so the employees in the branch can access the headquarters
network.
The headquarters and branch use GRE VPN, or IPSec VPN tunnels to establish an intranet. The
employees on a business trip set up IPSec VPN tunnels, and access the intranet after passing
authentication.
Huawei AR1200-S Series Enterprise Routers
Product Description
2 Network Applications
Issue 01 (2011-08-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6
