VPN optimization

If you are using the CNA system to optimize VPN traffic, your network should meet the following minimum requirements:

• Multi-homed connectivity in at least one direction between your headquarters and remote sites (either two Internet service providers, or one ISP and a private line, such as frame relay)
• Edge routers must support BGP4 (as defined in RFC 1771 and RFC 1657) and Policy Based Routing (PBR) or equivalent.