I had just moved one server farm from round-robin to leastconns with slowstart of 300 second and no new rservers had been added (or failed), they are all the same as before the change.
What I see is that one rserver gets much more hits than other and one of them is practically idle. I know that CSCso93479 states that current connections count in "show serverfarm" is inaccurate, but I cannot understand such a difference....
Nope. I was trying to see what I can do about this, so I removed the leastconn (reverting back to round-robin) then configured leastconn back, but without slow-start parameter. What I immediately noticed is that servers started to be hit in a more equal manner, which is what I expected. I then reapplied the leastconn command, but with slow-start parameter and it would seem that session distribution was as expected. I assume that maybe removing and reapplying leastconn command did the trick, or maybe slow-start parameter was somehow misbehaving when I first applied it....
Now what I noticed is there are some sessions under failure column of "show serverfarm" output and I don't believe I had those before I switched to leastconn. The number is very low, like 5 failed versus 30,000 total, but still I was wondering if there is anything different with leastconn from round-robin that would cause some of the sessions to fail ?
Why do you need native HA: The native HA feature allows two Cisco DCNM
appliances to run as active and standby applications, with their
embedded databases synchronized in real time. Therefore, when the active
DCNM is not functioning, the standby DCNM will...
This document will provide screenshots to outline the steps to setup
TACACS+ configuration to ACI and also the configuration required on
Cisco ACS server. Please find the official Cisco guide for configuring
TACACS+ Authentication to ACI:
Is it supported or NOT supported? It's a frequently asked question.
Before APIC, release 2.3(1f), transit routing was not supported within a
single L3Out profile. In APIC, release 2.3(1f) and later, you can
configure transit routing with a single L3Out pr...