HP 6120G/XG HP ProCurve Series 6120 Blade Switches Access Security Guide - Page 204
Determining the Maximum Amount of Time Before Client Session, Termination.
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RADIUS Authentication, Authorization, and Accounting Cached Reauthentication authentication have been changed from their default values. The period of time represented by X is how long 802.1X or Web MAC authentication will wait for a RADIUS response. For example: 1. A cached-reauth-period is set to 900 seconds (15 minutes) and the reauth period is 180 seconds. 2. A client is successfully authenticated or reauthenticated. 3. The RADIUS server becomes unavailable. In 180 seconds from the authen tication in step 1, 802.1X or Web/MAC authentication initiates reauthenti cation. 4. In X seconds after the initiation of authentication in step 3 (1 to 30 seconds if default values for 802.1X or Web/MAC authentication are used), 802.1x or Web/MAC authentication receives notification that the RADIUS server is unavailable. 5. 802.1X or Web/MAC authentication allows the first cached reauthentica tion and starts the cached reauth period. 6. A number of cached reauthentications occur within the 900 seconds after the start of the cached reauth period in step 5. These have a period of 180 + X seconds. 7. The cached reauthentication period (900 seconds) ends. 8. The next reauthentication begins 180 seconds after the last cached reau thentication. 9. In X seconds after the reauthentication in step 8, 802.1X or Web/MAC authentication receives notification that the RADIUS server is still unavailable. 10. 802.1X or Web/MAC authentication terminates the client's session. Determining the Maximum Amount of Time Before Client Session Termination. 1. The maximum amount of time between step 2 and step 3 is 180 seconds. 2. The amount of time between step 3 and step 5 is X seconds. 3. The reauthentication in step 8 happens less than 180 seconds after step 7, and step 7 happens in 900 seconds after step 5. The maximum amount of time between step 5 and step 8 is 900 + 180 seconds. 5-28