This paper demonstrates that real-time encryption of protection traffic in IP/MPLS-based communications networks is possible with negligible impact on performance and system operation. It is also shown how the impact of jitter and asymmetrical delay in real communications networks can be eliminated. These results will provide confidence to power utilities that modern IP/MPLS infrastructure can securely and reliably cater for even the most demanding aplications Solution tailored for grid communication, but also was praised for its ability to provide comprehensive protection for both IP and non-IP traffic, with minimal management overhead and complexity.