发明名称 |
Filterung and disposition of messages in a bridge using a single address and protocol table. |
摘要 |
<p>An arrangement for selective filtering, e.g. one-way filtering, of messages received by a 2-port bridge from stations connected to two LANs of an extended LAN is provided. The bridge includes a message filtering database containing the addresses of all stations connected to one of the LANs. The database also contains a list of higher-level protocols employed by the stations. Associated with each protocol-type is information used by the bridge to dispose of the message. The message filtering database comprises a single table memory capable of supporting both ports of the bridge. The selective filtering process involves a two-step analysis by the bridge to determine whether to discard the message or forward it to another port. The analysis is based on a destination address and a protocol-type of the received message. <IMAGE></p> |
申请公布号 |
EP0508886(A1) |
申请公布日期 |
1992.10.14 |
申请号 |
EP19920400969 |
申请日期 |
1992.04.07 |
申请人 |
DIGITAL EQUIPMENT CORPORATION |
发明人 |
METZGER, STEPHEN D.;LOMICKA, JEFFREY A.;VACON, GARY;GILI, PAT |
分类号 |
H04L12/46 |
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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