公开(公告)号：US20160127249A1

公开(公告)日：2016-05-05

申请号：US14898720

申请日：2014-06-23

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yasuyuki Itoh ,  Sadayuki Yasuda ,  Shoko Ohteru ,  Masami Urano ,  Tsugumichi Shibata

IPC: H04L12/873 ,  H04L12/46

CPC classification number: H04L47/522 ,  H04L12/46 ,  H04L12/4625 ,  H04L12/66 ,  H04L47/30 ,  H04L47/6275 ,  H04L49/901 ,  H04L49/9084

Abstract: A write preference determination unit (30A) compares a reception rate of packets received from the lines of a first network (NW1) with a reception rate threshold for write preference determination, and in a case where the reception rate exceeds the reception rate threshold, determines that preference of a write operation is necessary. A write preference control unit (30B) increases, out of a total access bandwidth of a packet buffer (BUF), a write bandwidth for a packet write operation to the packet buffer (BUF) as compared to a read bandwidth for a packet read operation from the packet buffer (BUF) in a case where the write preference determination unit (30A) determines that the preference is necessary, thereby preferentially executing the packet write operation to the packet buffer. This suppresses occurrence of linked discard of reception packets caused by a shortage of the write bandwidth.

Abstract translation: 写入偏好确定单元（30A）将从第一网络（NW1）的线路接收的分组的接收速率与用于写入偏好确定的接收速率阈值进行比较，并且在接收速率超过接收速率阈值的情况下，确定 写入操作的偏好是必要的。 与分组读取操作的读取带宽相比，写入偏好控制单元（30B）从分组缓冲器（BUF）的总接入带宽中增加用于分组缓冲器（BUF）的分组写入操作的写入带宽 在写入偏好确定单元（30A）确定需要偏好的情况下，从分组缓冲器（BUF）中，优先地对分组缓冲器执行分组写入操作。 这抑制了由写入带宽不足导致的接收分组的丢弃的发生。

公开(公告)号：US09894007B2

公开(公告)日：2018-02-13

申请号：US14898720

申请日：2014-06-23

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yasuyuki Itoh ,  Sadayuki Yasuda ,  Shoko Ohteru ,  Masami Urano ,  Tsugumichi Shibata

IPC: H04L12/873 ,  H04L12/66 ,  H04L12/46 ,  H04L12/865 ,  H04L12/835 ,  H04L12/861 ,  H04L12/879

CPC classification number: H04L47/522 ,  H04L12/46 ,  H04L12/4625 ,  H04L12/66 ,  H04L47/30 ,  H04L47/6275 ,  H04L49/901 ,  H04L49/9084

Abstract: A write preference determination unit (30A) compares a reception rate of packets received from the lines of a first network (NW1) with a reception rate threshold for write preference determination, and in a case where the reception rate exceeds the reception rate threshold, determines that preference of a write operation is necessary. A write preference control unit (30B) increases, out of a total access bandwidth of a packet buffer (BUF), a write bandwidth for a packet write operation to the packet buffer (BUF) as compared to a read bandwidth for a packet read operation from the packet buffer (BUF) in a case where the write preference determination unit (30A) determines that the preference is necessary, thereby preferentially executing the packet write operation to the packet buffer. This suppresses occurrence of linked discard of reception packets caused by a shortage of the write bandwidth.