Hi,
If BW/connection box wide/context wide usage is more than allocated, then traffic would be dropped. Once the connections/BW fall below the max allocated, then it will start to accept traffic again.
There is no redirect here unless you are talking about backup real server in a serverfarm or backup serverfarm/partial failover etc.
A document regarding resource allocation and best practices.
http://docwiki.cisco.com/wiki/Cisco_Application_Control_Engine_%28ACE%29_Troubleshooting_Guide_--_Managing_Resources
Regards,
Kanwal
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