发明名称 |
END-TO-END INTER-DOMAIN ROUTING |
摘要 |
According to a first aspect of the present invention there is provided a method of constructing an end-to-end routing path across multiple packet switched domains. The method comprises generating a domains topology identifying all possible domains, the border elements of those domains and the inter-domain links. When a request is received for computation of a path from a source entity in a first domain to a destination entity in a second domain, all domains and inter-domain links that cannot or are unlikely to feature in the requested path are removed from the domains topology. Candidate intra-domain paths for each remaining domain are then computed, with each candidate intra-domain path being mapped to a logical link defined by its two ends, at least one end being a border element and the other being a border element or the source or destination entity. Attributes for each logical link are determined, together with attributes of the remaining inter-domain links. A virtual network topology is generated by combining the logical links and their associated attributes with the remaining inter-domain links and their associated attributes. This allows a best end-to-end route to be determined by analyzing the virtual network topology. |
申请公布号 |
EP2274879(A1) |
申请公布日期 |
2011.01.19 |
申请号 |
EP20080735588 |
申请日期 |
2008.03.28 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
IOVANNA, PAOLA;ZEMA, CRISTIANO |
分类号 |
H04L12/751;H04L12/24;H04L12/715;H04L12/721 |
主分类号 |
H04L12/751 |
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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