3Com Switch 4200G Configuration Guide

186 CHAPTER 23: AAA&RADIUS CONFIGURATION
The user re-authentication upon device restart function is designed to resolve the
above problem. After this function is enabled, every time the switch restarts:
1 The switch generates an Accounting-On packet, which mainly contains the following
information: NAS-ID, NAS-IP address (source IP address), and session ID.
2 The switch sends the Accounting-On packet to CAMS at regular intervals.
3 Once the CAMS receives the Accounting-On packet, it sends a response to the
switch. At the same time it finds and deletes the original online information of the
users who access the network through the switch before the restart according to the
information contained in this packet (NAS-ID, NAS-IP address and session ID), and
ends the accounting of the users based on the last accounting update packet.
4 Once the switch receives the response from the CAMS, it stops sending other
Accounting-On packets.
5 If the switch does not receives any response from the CAMS after the number of the
Accounting-On packets it has sent reaches the configured maximum number, it does
not send any more Accounting-On packets.
The switch can automatically generate the main attributes (NAS-ID, NAS-IP address
and session ID) in the Accounting-On packets. However, you can also manually
configure the NAS-IP address with the nas-ip command. If you choose to manually
configure the attribute, be sure to configure an appropriate and legal IP address. If
this attribute is not configured, the switch will automatically use the IP address of the
VLAN interface as the NAS-IP address.
Displaying
AAA&RADIUS
Information
After the above configurations, you can execute the display commands in any view
to view the operation of AAA and RADIUS and verify your configuration.
You can use the reset command in user view to clear the corresponding statistics.
Table 153 Enable the user re-authentication upon device restart function
Operation Command Description
Enter system view system-view —
Enter RADIUS scheme
view
radius scheme
radius-scheme-name
—
Enable the user
re-authentication upon
device restart function
accounting-on enable [
send times | interval
interval ]
By default, this function is disabled, and
the system can send at most 15
Accounting-On packets consecutively at
intervals of three seconds.
Table 154 Display AAA information
Operation Command
Display the configuration information
about one specific or all ISP domains
display domain [ isp-name ]
Display the information about specified
or all user connections
display connection [ access-type { dot1x |
mac-authentication } | domain isp-name | interface
interface-type interface-number | ip ip-address | mac
mac-address | radius-scheme radius-scheme-name |
vlan vlan-id | ucibindex ucib-index | user-name
user-name ]
Display the information about specified
or all local users
display local-user [ domain isp-name | idle-cut
{ disable | enable } | vlan vlan-id | service-type { ftp |
lan-access | ssh | telnet | terminal } | state { active |
block } | user-name user-name ]