Hello,
When you configure Authentication on access device using the command below, you will need to input the IP of the first server:
<AC6605> system-view
[AC6605] radius-server template group1
[AC6605-radius-group1] radius-server authentication 10.163.155.13 1812
For authorization, you need to input the second IP :
<AC6605> system-view
[AC6605] radius-server authorization 10.1.1.116 shared-key cipher Huawei
@2012 Hope to be useful:)