发明名称 |
DATA STREAM FILTERING APPARATUS & METHOD |
摘要 |
A method and apparatus for filtering data packets in a shared-medium or point-to-multipoint communications network. A filter unit is sent a data packet carrying a filter tag value in a packet addressed to the filter unit. The value is stored in the filter unit and subsequently received packets not addressed to the filter unit itself are forwarded only if they carry the stored filter tag. An embodiment of particular interest applies the method to Ethernet frames over a telecommunications access network (including optical or wireless networks), and uses the VLAN tag field to carry the filter tag information. |
申请公布号 |
EP1389379(A2) |
申请公布日期 |
2004.02.18 |
申请号 |
EP20020722499 |
申请日期 |
2002.05.13 |
申请人 |
NORTEL NETWORKS LIMITED |
发明人 |
UNITT, BRIAN;GRANT, MICHAEL;PHILLIPS, DAVID;ALLEN, MATTHEW |
分类号 |
H04L12/44;H04L12/18;H04L29/06 |
主分类号 |
H04L12/44 |
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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