When configure the routing and remote server we can not make more than 800 connection. some times we will get connection timed out error and intranet sites open very slowly. Users will experience this even if the number of users connected are less than 800.
To this solve this issue we can disable IGMP. To disable IGMP follow these steps:
1. Click Start, click Administrative Tools, and then click Routing and Remote Access.
2. Expand Routing and Remote Access_server_name, and then expand IP Routing.
3. Right-click IGMP, and then click Delete.