发明名称 |
Programmable pseudo virtual lanes for fibre channel systems |
摘要 |
A method and switch element for assigning priority to pseudo virtual lanes ("PVL") using a fibre channel switch element is provided. The method includes, assigning received R_RDYs based on a PVL distribution scheme; and determining traffic congestion on a PVL if there is no credit available to transfer frames from the PVL. A minimum bandwidth feature is enabled to avoid lower priority PVLs from getting no credit for transmitting frames; and distributing credit and R_RDYs based on frame age bits, wherein a lower priority PVL gets credit if a frame is waiting in the PVL for a longer duration compared to a higher priority PVL. The switch element includes, a PVL module having credit counters for plural PVLs; and a timer that monitors frame traffic for each PVL lane. If a PVL gets congested, then a state machine adjusts priority of R_RDY distribution scheme of other PVLs to transmit frames.
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申请公布号 |
US2005018676(A1) |
申请公布日期 |
2005.01.27 |
申请号 |
US20040894597 |
申请日期 |
2004.07.20 |
申请人 |
DROPPS FRANK R.;ROSS EDWARD C. |
发明人 |
DROPPS FRANK R.;ROSS EDWARD C. |
分类号 |
H04L12/56;(IPC1-7):H04L12/56 |
主分类号 |
H04L12/56 |
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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