3com 5500-SI Manual De Usuario

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HAPTER

 21: 802.1

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ONFIGURATION

Table 455   Setting the Maximum Retransmitting Times of Stopping Accounting Reques

t

By default, the stopping accounting request can be retransmitted up to 500 times.

Perform the following configurations in RADIUS Scheme View. 

Table 456   Enabling the Selection of RADIUS Accounting Option

This command can also be configured in ISP Domain View. For details, refer to 
Configuring Relevant Attributes of the ISP Domain.

This section contains information for User Re-authentication at Reboot.

In an AAA scheme implemented jointly by the switch and CAMS, if the switch reboots 
after an exclusive user (a user whose concurrent online number is set to 1 on the 
CAMS) passes the authentication, gets authorized and begins being charged, the 
switch will give a prompt that the user has already been online when the user re-logs 
onto the network before the CAMS makes online detection. Therefore, the user 
cannot access network resources as usual. In this situation, the user can log onto the 
network again only after the network administrator manually removes the user's 
online information.

The user re-authentication at reboot feature is designed to resolve this problem. After 
this feature is enabled, every time the switch reboots:

■

The switch generates an Accounting-On packet, which mainly contains the 
following information: NAS-ID, NAS-IP (source IP address), and session ID.

■

The switch sends the Accounting-On packet to the CAMS at regular intervals.

■

Once the CAMS receives the Accounting-On packet, it sends a response to the 
switch. At the same time it finds and deletes the existing online information of the 
users who were accessing the network through the switch before the reboot 
based on the NAS-ID, NAS-IP and session ID contained in the Accounting-On 
packet, and ends the charging of the users according to the last accounting 
update packet.

■

Once the switch receives the response from the CAMS, it stops sending other 
Accounting-On packets.

■

If the switch has tried the set maximum times to transmit the Accounting-On 
packet but still does not receive any response from the CAMS, it stops the sending 
of the Accounting-On packet.

Set the maximum retransmitting times of stopping 
accounting request

Restore the maximum retransmitting times of 
stopping accounting request to the default value

Enable the selection of RADIUS accounting option

Disable the selection of RADIUS accounting option