3Com 3C13636 Configuration Manual page 1022

3Com Router 3000 Ethernet Family
Configuration Guide
II. Enabling the stop-accounting packet buffer and retransmission
Since the stop-accounting packet affects the bill and eventually the charge to a user, it
has importance for both users and the ISP. Therefore, the NAS should make its best
effort to send every stop-accounting packet to the RADIUS accounting server. If the
NAS receives no response from the RADIUS accounting server to a stop-accounting
packet that it has sent for a specified period of time, it buffers and resends the packet
until the RADIUS accounting server responds, or discards the packet if the number of
transmission attempts reaches the configured limit. You can use the following
commands to enable the NAS to buffer stop-accounting packets and set the maximum
number of transmission attempts.
Perform the following configuration in RADIUS view.
Table 2-17 Enable the stop-accounting packet buffer and set the maximum number of
transmission attempts
Enable the stop-accounting packet buffer.
Disable the stop-accounting packet buffer.
Enable
retransmission and specify the maximum
number of transmission attempts.
Restore the default maximum number of
transmission attempts.
By default, the stop-accounting packet buffer is enabled and the maximum number of
packet transmission attempts is 500.
III. Configuring the maximum number of real-time accounting request
attempts
A RADIUS server usually determines the online state of a user using the connection
timeout timer. If the RADIUS sever receives no real-time accounting packets from the
NAS for a long time, it considers that the line or device fails and stops user accounting.
To work with this feature of the RADIUS server, the NAS is required to terminate user
connections simultaneously with the RADIUS server when unpredictable faults occur.
3Com Series Routers allow you to set the maximum number of continuous real-time
accounting request attempts. The NAS terminates a user connection if it receives no
response after the number of transmitted real-time accounting requests exceeds the
configured limit.
You can use the following command to set the maximum number of real-time
accounting request attempts.
Operation
stop-accounting
3Com Corporation
2-21
Chapter 2 AAA and RADIUS/HWTACACS Protocol
stop-accounting-buffer enable
undo
enable
packet
retry stop-accounting retry-times
undo retry stop-accounting
Configuration
Command
stop-accounting-buffer