H3C AR 18-2 Series Installation Manual

Installation ManualH3C AR 18-2X Series Routers Chapter 1 Product Overview1-1Chapter 1 Product Overview1.1 IntroductionH3C AR 18-2X Series Routers (hereinafter referred to as the AR18-2X series) are Ethernet access routers designed for small officehome office (SOHO) subscribers. By far, the series have six models:AR 18-21/18-22/18-22-8/18-22S-8/18-23-1/18-23S-1. They providean uplink Ethernet interface and four downlink layer 2 (L2) switched10/100BASE-T Ethernet interfaces that can be isolated.The AR 18-2X series support multiple virtual private network(VPN) services, such as layer 2 tunneling protocol (L2TP) VPN, IPsecurity (IPSec) VPN, generic routing encapsulation (GRE) VPN, anddynamic VPN (DVPN). They can provide tunnel connections to remoteusers to build VPNs that can be internets, intranets, or accessnetworks.The series support firewall, AAA (authentication, authorization,accounting), network address translation (NAT), and quality of service(QoS). Therefore, they can ensure security and guaranteed servicesto the private networks constructed on the open Internet.In the series the AR 18-22S-8 and AR 18-23S-1 has a build-inhardware encryption chip, which can significantly improve encryptionperformance.The interfaces that the AR 18-2X series provide are compliantwith the international standards and can work with the products ofother vendors at every layer. The existing investment of users canthus be protected to the maximum.