As the first service convergence routers based on a multi-core processor, the HP A6600 series routers dramatically enhance service processing capacity. Distributed processing architecture, isolated routing, and service engines, as well as isolated control and service panels, provide higher reliability and continual services. Different software service engines can handle different services such as network address translation (NAT), quality of service (QoS), IPSec, and NetStream, with no further cost from additional hardware service modules. A6600 routers feature a modular design and an embedded hardware encryption capacity, as well as flexible deployment configurations, including High-speed Interface Modules (HIMs), Multi-function Interface Modules (MIMs), and Open Application Architecture (OAA)-enabled modules that provide network customization and investment protection. These routers provide carrier-class reliability from network, device, link, and service layers.