Rajesh_07_16489
Jan 12, 2015Nimbostratus
What happens when clients send request to downed DC
My scenario is, we have 2 DCs with pair of LTM at each DC and single GTM is deployed for load balancing the traffic across both the DCs and we configured Round Robin at GTM end to manage both the DCs in parallel way. Assume, we have configured http service in LTM and when clients do DNS query, GTM responded with 2nd DC’s LTM IP, which was healthy. However, after responding to clients, 2nd DC is down completely due to some reason. As clients have valid DNS responses, it would forward http request to 2nd DC’s LTM, which is down now. Moreover, http request also would be failed due to unavailability of 2nd DC. Do we have any mechanism at GTM end to effectively manage this scenario. Thanking you in advance for your help