发明名称 |
Network units for use in and organisation of cascade systems |
摘要 |
A multi-port network unit for use in a cascade system of network units sends from a cascade port a packet including a special header having a source port ID, a destination port ID and a 'destination port known' field. The port IDs identify both a unit and a port within a unit. A routing database is set up, optionally by a discovery protocol, in terms of ports and either destination units (within the cascade) or source units (within the cascade). The database includes a mesh table, indicating from which cascade port a packet with a known destination port ID should be forwarded, without needing a fresh look-up. The database also includes a multicast exclusion table which allows ingress of packets with source unit IDs matched to an ingress port. The scheme allows a general mesh type of cascade while dynamically preventing closed loops. |
申请公布号 |
US2004095928(A1) |
申请公布日期 |
2004.05.20 |
申请号 |
US20030337299 |
申请日期 |
2003.01.07 |
申请人 |
O'NEILL EUGENE;CHOI KAM;O'MALLEY EDELE;GOODFELLOW MAURICE A. |
发明人 |
O'NEILL EUGENE;CHOI KAM;O'MALLEY EDELE;GOODFELLOW MAURICE A. |
分类号 |
H04L12/46;H04L12/56;(IPC1-7):H04L12/28 |
主分类号 |
H04L12/46 |
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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