topic ACS authentication to devices in Network Access Control https://community.cisco.com/t5/network-access-control/acs-authentication-to-devices/m-p/2434414#M87881 <HTML><HEAD></HEAD><BODY><P>please check whether the network device or AAA Client has any known RADIUS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;compatibility issues.</P></BODY></HTML> Tue, 25 Feb 2014 08:08:18 GMT Naveen Kumar 2014-02-25T08:08:18Z ACS authentication to devices https://community.cisco.com/t5/network-access-control/acs-authentication-to-devices/m-p/2434413#M87877 <P>Hi All,</P><P></P><P>ACS intermittiently authenticates---</P><P></P><P>e.g first login failed</P><P></P><P>second login failed</P><P></P><P>third attempt successful</P><P></P><P>Any idea why? We are running ACS 5.5 patch 6</P><P></P><P>Thanks</P> Mon, 11 Mar 2019 04:25:44 GMT https://community.cisco.com/t5/network-access-control/acs-authentication-to-devices/m-p/2434413#M87877 rakeshvelagala 2019-03-11T04:25:44Z ACS authentication to devices https://community.cisco.com/t5/network-access-control/acs-authentication-to-devices/m-p/2434414#M87881 <HTML><HEAD></HEAD><BODY><P>please check whether the network device or AAA Client has any known RADIUS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;compatibility issues.</P></BODY></HTML> Tue, 25 Feb 2014 08:08:18 GMT https://community.cisco.com/t5/network-access-control/acs-authentication-to-devices/m-p/2434414#M87881 Naveen Kumar 2014-02-25T08:08:18Z