发明名称 |
METHOD AND APPARATUS FOR COMMUNICATION OF DATA PACKETS BETWEEN LOCAL NETWORKS |
摘要 |
<p>Method and arrangement for communication of data packets between a first device (D1) in a first local network (A) and a second device (D2) in a second local network (B), where private IP addresses are used for devices present in the first and second local networks. A first gateway (100) of the first network updates (1:1) a local name server record (100a) with a domain name and an IP address of a second gateway (102) of the second network, each gateway having a local DNS function. When an outgoing DNS request is received (1:2) from the first device referring to a hostname of the second device, the IP address of the second gateway is determined (1:3) from the local name server record based on a domain name in the hostname. A DNS request is then sent (1:4) to the second gateway using the determined IP address, to obtain a current private IP address of the second device in a DNS response (1:5) from the second gateway. A DNS response is then forwarded (1:8) to the first device, referring to the current private IP address of the second device.</p> |
申请公布号 |
EP2253123(A1) |
申请公布日期 |
2010.11.24 |
申请号 |
EP20090721670 |
申请日期 |
2009.03.20 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
KOELHI, JOHAN;GOTARE, CHRISTIAN;THYNI, TOMAS;WELIN, ANNIKKI |
分类号 |
H04L29/12;H04L12/28;H04L12/46 |
主分类号 |
H04L29/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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