Because VPN performance is mostly determined by the routers on the Internet, you are limited to tuning each VPN server's Internet Service Provider (ISP) connection to increase your VPN's performance. Depending on which path is used through the Internet, increasing the bandwidth of your ISP connections might or might not improve the performance of your VPN. However, if a slow link exists, try the following adjustments:
Tune the Internetwork Packet ExchangeTM (IPXTM) timeouts for the client and for the server using NIASCFG.
Increase the IPX application timeouts.
Increase the TCP/IP application timeouts.
Turn off UDP checksumming.
Use the NetWare Link Services ProtocolTM (NLSPTM) software instead of the Routing Information Protocol (RIP) and Service Advertising Protocol (SAP) for IPX.
Increase the number of packet receive buffers as allowed by the amount of available memory.
