3Com Switch 8800 Family IPsec Module Configuration and Command reference Guide

40 CHAPTER 4: AAA AND RADIUS/HWTACACS PROTOCOL CONFIGURATION
authentication/authorization port and accounting port). When doing this, make
sure that the port settings on the security gateway and the RADIUS server are
consistent.
You can use the display radius command to view the IP addresses and port
number of the primary and secondary accounting servers in the RADIUS scheme.
Configuring optional accounting
If a user is configured with the accounting optional command, the device does
not disconnect the user during the accounting even when it finds no available
accounting server or fails to communicate with the accounting server.
Perform the following configuration in RADIUS domain view.
By default, when an RADIUS scheme is created, optional accounting is disabled.
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, 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.
By default, the stop-accounting packet buffer is disabled and the maximum
number of packet transmission attempts is 500.
Tabl e 26 Enable/disable optional accounting
Operation Command
Enable optional accounting. accounting optional
Disable optional accounting. undo accounting optional
Tabl e 27 Enable the stop-accounting packet buffer and set the maximum number of
transmission attempts
Operation Command
Enable the stop-accounting packet buffer. stop-accounting-buffer enable
Disable the stop-accounting packet buffer. undo stop-accounting-buffer enable
Enable stop-accounting packet retransmission
and specify the maximum number of
transmission attempts.
retry stop-accounting retry-times
Restore the default maximum number of
transmission attempts.
undo retry stop-accounting