Can you give us some network traces when the user hits the sorry server for th first time ? I suspect the sorry page and its components being marked as cachable at the HTTP level, you can change the code on the server farm, or create a rewrite rule on the ACE to mark all objects on the sorry server as non cachable.
Have you compared the headers that are being sent by the servers in the primary farm with those of the sorry serverfarm? If the sorry servers are marking the content as cacheable but the primary servers are not then you could perhaps configure the sorry servers with the same settings.
Is the sorry server giving actual application content or just a sorry page telling the user the site is unavailable?
Also when you refresh is the browser making a new tcp connection to the vip or is it just sending a get on the existing tcp conversation? A wireshark trace on the client would show if it is a new connection or a continuation of the existing one. If the connection is still established and you are just sending another get on the same tcp stream you may want to try and disable connection keepalive on the web server. When the primary farm comes back up only new tcp connections should be sent there. The existing connection will stay on the server they were initially sent to.
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...