Administering TCP/IP Networks, IPMP, and IP Tunnels in Oracle® Solaris 11.2

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Updated: July 2014
 
 

Types of Tunnels

Tunneling involves the encapsulation of an IP packet within another packet. This encapsulation enables the packet to reach its destination through intermediary networks that do not support the packet's protocol. Tunnels differ depending on the type of packet encapsulation that is used.

    The following types of tunnels are supported in Oracle Solaris:

  • IPv4 tunnels IPv4 packets are encapsulated in an IPv4 header and sent to a preconfigured unicast IPv4 destination. To indicate more specifically the packets that flow over the tunnel, IPv4 tunnels are also called either IPv4 over IPv4 tunnels or IPv6 over IPv4 tunnels.

  • 6to4 tunnels IPv6 packets are encapsulated in an IPv4 header and sent to an IPv4 destination that is automatically determined on a per-packet basis. This determination is based on an algorithm that is defined in the 6to4 protocol.

  • IPv6 tunnels – IPv6 packets are encapsulated in an IPv4 header and sent to an IPv4 destination that is automatically determined on a per-packet basis. The determination is based on an algorithm that is defined in the 6to4 protocol.