ZebOS Advanced Routing Suite
•	ZebOS Advanced Routing Suite Brochure (PDF: 364 KB)
•	Integrated Management
•	Layer 2 Switching
•	Metro Ethernet
•	IPv4/IPv6 Unicast Routing
•	IPv4/IPv6 Multicast Routing
•	Quality of Service
•	Multi-protocol Label Switching
•	Virtual Router Redundancy
•	Virtual Private LAN Service
•	Virtual Routing and Switching
•	IPv6 Tunneling and Transition
Videos
The Need for ZebOS Kunihiro Ishiguro
What does ZebOS do? Vividh Siddha

IP Infusion offers a set of IPv4-to-IPv6 transition software packages, including 6to4, ISATAP, GRE, and IP-in-IP tunneling support. These protocols offer a mechanism for vendors to provide their users with methods for simultaneously supporting both IPv4 and IPv6. The information below briefly describes Tunneling and Transition tools offered with the ZebOS® Advanced Routing Suite.

Transition and Tunneling Tools

6to4 – The IPv4 to IPv6 transition (6to4) mechanism allows isolated IPv6 routing domains to communicate with other IPv6 routing domains, even in the total absence of native IPv6 service providers. It is a powerful IPv6 transition tool that allows both traditional IPv4-based Internet end-user sites and new IPv6-only Internet sites to utilize IPv6 and operate successfully over the existing IPv4-based Internet routing infrastructure.

ISATAP – The Intra-Site Automatic Tunneling Addressing Protocol is a transition mechanism to used to transmit IPv6 packets between dual-stack nodes on top of an IPv4 network, by using IPv4 as a virtual non-broadcast multiple access network data link layer. Consequently, support is provided for multicast without an underlying IPv4 network infrastructure.

GRE – The Generic Routing Encapsulation protocol is a tunneling mechanism which encapsulates a wide variety of network layer packets inside IP tunneling packets. GRE creates a virtual point-to-point link with routers at remote points on an IP inter-network.

IPIP – IP-in-IP tunneling is a method by which an IP datagram is encapsulated (carried as  a payload) within an IP datagram. Encapsulation is a way to alter the normal IP routing, by delivering the datagram to an intermediate destination that would not have otherwise been selected. An outer IP header is inserted before the datagram’s existing IP header and then the datagram is sent. At the intermediate destination, it is de-capsulated, thereby yielding the original IP datagram, which is then delivered to the destination indicated by the original Destination Address field.