The vRouter implementation of GRE complies with the following standards:

• RFC 1702: Generic Routing Encapsulation over IPv4 Networks
• RFC 2784: Generic Routing Encapsulation

The vRouter implementation of NHRP complies with the following standard:

• RFC 2332: NBMA Next Hop Resolution Protocol (NHRP)

The vRouter implementation of IPsec complies with the following standards:

• RFC 2401, Security Architecture for the Internet Protocol
• RFC 2402, IP Authentication Header (AH)
• RFC 2406, IP Encapsulating Security Payload (ESP)
• RFC 2407, The Internet IP Security Domain of Interpretation for ISAKMP
• RFC 2408, Internet Security Association and Key Management Protocol (ISAKMP)
• RFC 2409, The Internet Key Exchange (IKE)
• RFC 2412, The OAKLEY Key Determination Protocol
• RFC 3526, More Modular Exponential (MODP) Diffie-Hellman groups for Internet Key Exchange (IKE)
• RFC 3706, A Traffic-Based Method of Detecting Dead Internet Key Exchange (IKE) Peers
• RFC 4307, Cryptographic Algorithms for Use in the Internet Key Exchange Version 2 (IKEv2)
• RFC 4478, Repeated Authentication in Internet Key Exchange (IKEv2) Protocol
• RFC 7296, Internet Key Exchange Protocol Version 2 (IKEv2)
• RFC 7815, Minimal Internet Key Exchange Version 2 (IKEv2) Initiator Implementation