Translator for IP networks, network system using the translator, and IP network coupling method therefor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 14, 2000
Grant Date -
N/A
app pub date -
Jul 2, 1997
filing date -
Jul 4, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A translator for coupling a first network such as an internet protocol version 4 (IPv4) and a second network such as an internet protocol version 6 (IPv6) having different addressing architectures for IP addresses due to a difference in version or the like so as not to exhaust the IP addresses of one of the two networks, a network system using the translator, and a network coupling method therefor are provided. When a packet is transferred from the IPv6 network to the IPv4 network, the translator assigns any of a plurality of previously prepared IPv4 addresses to an IPv6 address stored in a source storing field of the IPv6 packet. The assigned address is stored in a source storing field of an IPv4 packet. A packet translation unit is provided for assigning the foregoing IPv6 address to an IPv4 address stored in a destination storing field of the IPv4 packet, when a packet is transferred from the IPv4 network to the IPv6 network, and for storing this address in a destination storing field of the IPv6 packet.
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