Configuring Ip Session; Establishing The Configuration Task - Huawei S9300 Configuration Manual

S9300&S9300E Terabit Routing Switch
Configuration Guide - IP Service
The S9300&S9300E can terminate DHCP packets on sub-interfaces. You can configure a remote
DHCP server or a local DHCP server to allocate IP addresses. You need to configure the IP
session access function on the Layer 3 sub-interface. This indicates that the sub-interface can
terminate DHCP packets. In addition, you need to configure the access domain and
authentication mode for the users on this sub-interface. After the IP session function is enabled
on the interface, the default values of other parameters are generated automatically. You can
change the parameter values through commands.
l
l
l
l
l
l
l

4.3 Configuring IP Session

This section describes how to create an IP session and set related parameters.

4.3.1 Establishing the Configuration Task

This section describes the applicable environment, pre-configuration tasks, and data preparation
for configuring IP session.
Applicable Environment
When a user connects to the S9300&S9300E, the S9300&S9300E authenticates the user,
performs lease management, and forwards data.
Pre-configuration Tasks
Before configuring IP session, complete the following tasks:
Issue 01 (2012-03-15)
NOTE
At present, the IP session function is only supported on the S24XA, T24XA, G24CFAT.
A board supporting Layer 3 interfaces can be configured with a maximum of 4096 sessions.
Trunk sub-interfaces support IP sessions. The member interfaces of a trunk interface cannot be located on
different boards or subcards.
The IP sessions can access sub-interfaces.
The DHCP packets can be sent to the CPU.
The DHCP packets can be processed, for example, parsed and encapsulated.
The users can be authenticated.
The users can be charged based on the online duration.
The ARP probe can be performed for online users.
If a user goes offline abnormally (that is, the user does not request the server to release the
address), the S9300&S9300E can detect this user by performing ARP probe on online users.
Then the S9300&S9300E deletes the data of the offline user to ensure the effective resource
usage.
Users can join multicast groups.
After a DHCP user, maybe IPTV terminal, joins a multicast group, the user can receive the
video data normally.
NOTE
To make access users go online successfully, you must configure a static route between the egress gateway
and the DHCP server on the S9300&S9300E. The address of the egress gateway is set according to the
actual situation and the configuration of the static route is described in IP Static Route Configuration.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 IP Session Configuration
91