Hi Jul,
I think you need to configure max connections command.
Configuring Maximum TCP Connections
By default, there is no limit on the number of TCP connections on a service. To define the maximum number of TCP connections on a service, use the max connections command. Enter the maximum number of connections from 6 to 65534. The default is 65534, which indicates that there is no limit on the number of connections.
--------------------------------------------------------------------------------
Note If you configure the absolute load calculation method on a CSS and a service exceeds the configured maximum number of connections, the CSS does not include the load of that service in any content rule load that the CSS advertises.
--------------------------------------------------------------------------------
For example:
(config-service[serv1])# max connections 7
To set the maximum TCP connections to the default value, enter:
(config-service[serv1])# no max connections
--------------------------------------------------------------------------------
Note Do not use service max connections on UDP content rules. The service connection counters do not increment and remain at 0 because UDP is a connectionless protocol.
--------------------------------------------------------------------------------
What the CSS will do is removing the server from the pool when the max-connections limit is reached. At that point, new connections will be sent to the other servers if they are available, but, if all of them are in the limit, then, yes, new connections will be dropped.
As I mentioned this feature is designed to protect the real servers themselves against an overload, the CSS is powerful enough to handle several hundred thousand concurrent connections, so, increasing the max-connection parameter for a server should not be an issue.
Use "max connections" under service definition
and use sorry servers.Sorry server will be used if the maximum connections value
is exceeded.
for details
http://www.cisco.com/en/US/docs/app_ntwk_services/data_center_app_services/css11500series/v7.30/configuration/content_lb/guide/Services.html#wp1026597
Here you can find about the maximum number of connection a CSS can afford:
http://www.cisco.com/en/US/customer/products/hw/contnetw/ps792/products_data_sheet0900aecd800f851e.html
HTH
Sachin Garg
