Hello Team
We faced with following issue:
We have ISE deployment with several NAD. All NAD works properly, but 1 switch catalyst 4510R every 20 min gets error:
%RADIUS-4-RADIUS_DEAD: RADIUS server x.x.x.x:1812,1813 is not responding
%RADIUS-4-RADIUS_ALIVE: RADIUS server x.x.x.x:1812,1813 is being marked alive
and some supplicant has no connectivity for network until we reboot them or clear authentication.
We collected dump from ISE and SPAN port and we see that for some supplicant ISE does not send Accounting-Response on Accounting-Request message. And after this switch marked radius server as dead.
What the reason of this behavior?
