System for transmitting data between bus and network having device comprising first counter for providing transmitting rate and second counter for limiting frames exceeding rate
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United States of America Patent
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Feb 18, 1997
Grant Date -
N/A
app pub date -
Jul 22, 1994
filing date -
Jul 22, 1994
priority date (Note) -
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Abstract
Multicast and broadcast frames transmission rate logic limiting the rate at which multicast or broadcast frames are forwarded by a MAC layer device interconnecting local area networks such as a bridge or switching hub, so as to prevent multicast or broadcast storms from propagating from one local area network to another local area network. Such logic is distributed among a plurality of local area network (LAN) ports of a switching hub, allowing the overall maximum rate at which such frames may be transmitted to be individually tuned on a per LAN port basis. The transmission rate logic includes a burst capability, in which the overall rate to which multicast and broadcast frames may be limited can be exceeded for a finite number of such frames. The burst capability may also be individually tuned on a per LAN port basis.
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