icontrol for .net - session issues

Patrick, There could be a couple different reasons for the errors, have you looked at the httpd and audit logs? You could just be exhausting the management interface. The preferred max session value is generally based on security requirements, versus automation. Personally for your situation, it sounds like a shorter timeout would be best.

Default session time out for the management interface is 20 minutes. You can view your current settings from the CLI with the following:

root@ve-lab(Active)(/Common)(tmos) list sys httpd all-properties
sys httpd {
    allow { All }
    auth-name BIG-IP
    auth-pam-dashboard-timeout off
    auth-pam-idle-timeout 1200
    description none
    fastcgi-timeout 300
    hostname-lookup off
    include none
    log-level warn
    max-clients 10
    ssl-certchainfile none
    ssl-certfile /etc/httpd/conf/ssl.crt/server.crt
    ssl-certkeyfile /etc/httpd/conf/ssl.key/server.key
    ssl-ciphersuite ALL:!ADH:!EXPORT:!eNULL:!MD5:!DES:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2
    ssl-include none
}
root@ve-lab(Active)(/Common)(tmos) modify sys httpd auth-pam-idle-timeout 300
root@ve-lab(Active)(/Common)(tmos) save sys config