Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.14.1.0 - Page 826
Disconnecting administrative users logged in through RADIUS, Configuring CoA to bounce 802.1x
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radius dynamic-auth 2 Enter the following command to configure the global shared key value: client-key encryption-type key Dell(conf-dynamic-auth#)client-key 7 password Disconnecting administrative users logged in through RADIUS Dell EMC Networking OS enables you to configure disconnect messages (DMs) to disconnect RADIUS administrative users who are logged in through an AAA interface. Before disconnecting an administrative user using the disconnect messages, ensure that the following prerequisites are satisfied: • Shared key is configured in NAS for DAC. • NAS server listens on the Management IP UDP port 3799 (default) or the port configured through CLI. • AAA session for the user is active. NAS uses the user-name or both the user-name as well as the NAS-Port attribute to identify the AAA user session. NAS disconnects all sessions related to the user, if the user-name is provided without NAS-port. 1 Enter the following command to configure the dynamic authorization feature: radius dynamic-auth 2 Enter the following command to terminate the 802.1x user session: disconnect-user NAS disconnects the administrative users who are connected through an AAA interface. Dell(conf#)radius dynamic-auth Dell(conf-dynamic-auth#)disconnect-user NAS takes the following actions: • validates the DM request and the session identification attributes. • sends a DM-Nak with an error-cause of 402 (missing attribute), if the DM request does not contain the User-Name. • sends a DM-Ack, if it is able to successfully disconnect the admin user. • sends a DM-Nak with an error-cause value of 506 (resource unavailable), if it is not able to disconnect the admin user. • sends a DM-Nak with an error-cause value of 501 (administratively prohibited), if disconnect-user feature is not enabled in NAS. Configuring CoA to bounce 802.1x enabled ports Dell EMC Networking OS provides RADIUS extension commands that enables you to configure port bounce settings for the 802.1x enabled port. Before configuring port bounce settings on a 802.1x enabled port, ensure that the following prerequisites are satisfied: • Shared key is configured in NAS for DAC. • NAS server listens on the Management IP UDP port 3799 (default) or the port configured through CLI. • The user is logged-in through 802.1X enabled physical port and successfully authenticated with Radius Server. When DAC initiates a port bounce operation, the NAS server causes the links on the authentication port to flap. This incident in turn triggers re-negotiation on one of the ports that is flapped. 1 Enter the following command to configure the dynamic authorization feature: radius dynamic-auth 2 Enter the following command to configure port-bounce setttings on a 802.1x enabled port: coa-bounce-port 826 Security
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