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S12700 V200R011C10 Configuration Guide - User Access and Authentication

This document describes the working mechanisms, configuration procedures, and configuration examples of User Access and Authentication features, such as AAA, DAA, NAC, PPPoE, Policy Association, and IP session.
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Overview of IP Sessions

Overview of IP Sessions

An IP session, also called DHCP proxy, is an application of the DHCP protocol. It manages DHCP users.

To flexibly manage DHCP users and meet user requirements on the network, you can use local authentication, remote authentication (RADIUS or HWTACACS authentication), and non-authentication to authenticate and authorize users during user access. When the user access status is stable, you can manage specified users, for example, charge the users and force the users to go offline.

Figure 3-1  Typical application of IP session

As shown in Figure 3-1, SwitchB is the access device of DHCP users, the IP session service runs on the aggregation SwitchA. SwitchA allocates IP addresses to users through the DHCP server, and the AAA server authenticates and authorizes users. Then the users can go online once they power on their computers. The DHCP server can be a remote server or a local server.


For the configurations of AAA function, see AAA Configuration.

Updated: 2019-10-21

Document ID: EDOC1000178117

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