Cisco 2950 Software Configuration Guide - Page 228
x Configuration Guidelines
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Configuring 802.1x Authentication Chapter 10 Configuring 802.1x Port-Based Authentication Table 10-1 Default 802.1x Configuration (continued) Feature Quiet period Retransmission time Maximum retransmission number Host mode Guest VLAN Client timeout period Authentication server timeout period Default Setting 60 seconds (number of seconds that the switch remains in the quiet state following a failed authentication exchange with the client). 30 seconds (number of seconds that the switch should wait for a response to an EAP request/identity frame from the client before resending the request). 2 times (number of times that the switch will send an EAP-request/identity frame before restarting the authentication process). Single-host mode. None specified. 30 seconds (when relaying a request from the authentication server to the client, the amount of time the switch waits for a response before resending the request to the client. 30 seconds (when relaying a response from the client to the authentication server, the amount of time the switch waits for a reply before resending the response to the server. This setting is not configurable.) 802.1x Configuration Guidelines These are the 802.1x authentication configuration guidelines: • When 802.1x is enabled, ports are authenticated before any other Layer 2 features are enabled. • The 802.1x protocol is supported on Layer 2 static-access ports and voice VLAN ports, but it is not supported on these port types: - Trunk port-If you try to enable 802.1x on a trunk port, an error message appears, and 802.1x is not enabled. If you try to change the mode of an 802.1x-enabled port to trunk, the port mode is not changed. - Dynamic ports-A port in dynamic mode can negotiate with its neighbor to become a trunk port. If you try to enable 802.1x on a dynamic port, an error message appears, and 802.1x is not enabled. If you try to change the mode of an 802.1x-enabled port to dynamic, the port mode is not changed. - Dynamic-access ports-If you try to enable 802.1x on a dynamic-access (VLAN Query Protocol [VQP]) port, an error message appears, and 802.1x is not enabled. If you try to change an 802.1x-enabled port to dynamic VLAN assignment, an error message appears, and the VLAN configuration is not changed. - EtherChannel ports-Do not configure a port that is an active or a not-yet-active member of an EtherChannel as an 802.1x port. If you try to enable 802.1x on an EtherChannel port, an error message appears, and 802.1x is not enabled. 10-10 Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide 78-11380-10
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