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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 40 Configuring 802.1X Authentication
Configuring 802.1X Authentication on the Switch
Enabling and Disabling RADIUS Keepalive
Use the set radius-keepalive enable command to check if configured RADIUS servers are alive. When
the command is enabled, the switch sends out a test username for authentication. In reply to the test
username, the RADIUS servers send an access rejection. To turn off authentication attempts that test the
RADIUS servers, enter the set radius-keepalive disable command. If you disable this feature, the
switch does not check the status of the servers, and the RADIUS server logs do not record the test
attempts.
Note In software releases 7.5 through 8.2, the command that you used to enable or disable the RADIUS
keepalive feature was the set feature dot1x-radius-keepalive command. In software release 8.3 through
8.5, the command that you used to enable or disable the RADIUS keepalive feature was the set dot1x
radius-keepalive command. In software release 8.6 and later releases, the command to enable or disable
the RADIUS keepalive feature is the set radius keepalive command.
To enable or disable the RADIUS keepalive feature, perform this task in privileged mode (the default is
enabled):
This example shows how to globally enable the RADIUS keepalive feature:
Console> (enable) set radius keepalive enable
Radius Keepalive enabled.
Console> (enable)
To set the RADIUS keepalive time in seconds, perform this task in privileged mode (the default is
60 seconds):
This example shows how to set the RADIUS keepalive time:
Console> (enable) set radius keepalive time 120
Radius keepalive time set to 120 seconds.
Console> (enable)
Task Command
Enable or disable the RADIUS keepalive
feature.
set radius keepalive {enable | disable}
Task Command
Set the RADIUS keepalive time. The time can
be set from 1–6,000 seconds. The default is
60 seconds.
set radius keepalive time seconds
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