Hello guys,
In this post, we are going to introduce you the configuring guide for Cisco RADIUS authentication server.
When CiscoSecure ACS is used as the RADIUS authentication server and hosts are connected to IP phones in inline mode, bind user names and passwords of IP phones to the voice VLAN on the RADIUS server, as shown in Figure 2-21.
Figure 2-21 Networking of the RADIUS server
S Switch V200R006 provides the following optimization:
In earlier versions of S Switch V200R006, the voice VLAN attribute (device-traffic-class=voice) is configured on the RADIUS server to identify the voice VLAN and authenticate voice services, as shown in Figure 2-22.
In S Switch V200R006 and later versions, the voice VLAN attribute (device-traffic-class=voice) does not need to be configured. The voice-vlan X enable command is configured on the switch to identify the voice VLAN and authenticate voice services.
Figure 2-22 Configuring the voice VLAN attribute (device-traffic-class=voice) on the RADIUS server 
In earlier versions of S Switch V200R006, data and voice services for a VLAN on an interface can be authenticated simultaneously. In V200R006 and later versions, authentication is performed one at a time.
See more please visit S2700, S3700, S5700, S6700, S7700, and S9700 Series Switches Typical Configuration Examples
That's all for it, hope you like it.
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