Hi,
As per title, we are seeing very random RPCPing times, even from servers in the server VLAN, so not a WAN issue or anything like that.
We have a farm of 7 Exchange 2013 Enterprise servers, All CU12. All running on 2012 R2. They are all in a DAG. There is a NetScaler load balancer in front of these servers which the clients point to. Generally works OK, though we do sometimes get Outlook issues where it drops off and we do not know why.
Testing with the following command:
rpcping -t ncacn_http -o RPCProxy=netscalerVIP.domain.com -P "username,domain,*" -H 1 -F 3 -a connect -u 9 -v 3 -s MailServer1 -I "username,domain,*" -e 6001 -i 20
In the last few minutes alone (while it is working OK) we have seen it as slow as 1293MS for a single RPCping (-i 1) and as fast as 20 RPCpings in 200ms.
Clearly something is not right somewhere for it to be that erratic.
How do I now look at this from the Exchange server side to ensure the issue is not with the Exchange server itself?
Thanks
James