Incompletely - HP 7102dl - ProCurve Secure Router Configuration Manual

Content Filtering
Troubleshooting Web Content Filtering
7-20
No matter what you discover, remember to define the router's behavior while
you fix the problem, enabling Allow mode if you want to grant users tempo-
rary, complete Internet access.
Web Sites Do Not Load, Load Slowly, or Load Incompletely
Filtering traffic adds a bit of latency while the router waits for the Websense
server to issue policy decisions. Sometimes Web sites will load slowly. Some-
times a Web site may time out or load only partially. Tell users to refresh their
browsers—a process that should fix the problem.
If this problem occurs frequently, the router might not be buffering enough
responses from Web servers. Or, the router might be dropping HTTP requests
because the maximum number of outstanding requests to the Websense server
has been reached.
When you debug filtering, this message indicates that the maximum number
of buffered responses may be too low:
Reached maximum number of buffered responses
This message indicates that the maximum number of outstanding requests
may be too low:
Reached maximum number of outstanding requests
Check the thresholds with the show ip urlfilter command and, if necessary,
raise them using these commands:
ProCurve(config)# ip urlfilter max-response <1 to 100>
ProCurve(config)# ip urlfilter max-request <1 to 500>
You might also check Websense servers' timeout settings. A very high setting
would prevent the router from applying Allow mode in a timely manner should
the Websense server fail. On the other hand, a setting that is too low can cause
the router to time out the Websense server without adequate cause.
Finally, remember that latency increases:
when the Websense server is located across a WAN connection
when the Websense server must control many users
You might want to assign priority handling to traffic that is sent to and from
the Websense server. (See Chapter 8: Setting Up Quality of Service). You
should also evaluate the demands that your network places on the Websense
solution and consider adding servers in more locations. (See the "Websense
Enterprise Deployment Guide" available at http://www.websense.com/global/
en/SupportAndKB/ProductDocumentation.)