Q: Are there other issues that will prevent latency-related VPN SLAs?
Yes. IT managers will not see end-to-end latency SLAs for VPNs as they get for other services such as a Frame Relay service that carriers time-sensitive SNA terminal to host traffic. One of the reasons end-to-end latency SLAs will not be practical for VPN s is that there are many variables, such as the type of encryption used and the client's process power, that determine end-to-end performance in VPN applications.