公开(公告)号：US20160337258A1

公开(公告)日：2016-11-17

申请号：US14710822

申请日：2015-05-13

Applicant: Cisco Technology, Inc.

Inventor： Mohammadreza Alizadeh Attar ,  Vinod Mitulal ,  Krishnan Subramani ,  Georges Akis ,  Peter Newman

IPC: H04L12/863 ,  H04L12/925 ,  H04L12/823

CPC classification number: H04L49/107 ,  H04L49/201 ,  H04L49/205 ,  H04L49/3036

Abstract: A network switch includes a buffer to store network packets linked to queues to feed the packets to output ports of the switch associated with the queues. The buffer is shared dynamically among multiple traffic pools. The network switch determines per-pool dynamic thresholds each based on an amount of unused buffer space, and per-queue dynamic thresholds based on amounts of unused buffer space available in the pools with which the queues are associated. The network switch receives packets, and for each received packet, the network switch admits the packet to the pool with which the packet is associated and the queue for which the packet is destined if (i) occupancy of the associated pool is less than the corresponding per-pool dynamic threshold, and (ii) occupancy of the queue for which the packet is destined is less than the corresponding per-queue dynamic threshold, and otherwise drops the packet.

Abstract translation: 网络交换机包括缓冲器，用于存储链接到队列的网络分组，以将分组提供给与队列相关联的交换机的输出端口。 缓冲区在多个流量池之间动态共享。 网络交换机基于未使用的缓冲区空间量确定每个池的动态阈值，并且基于与队列相关联的池中可用的未使用的缓冲区空间的每个队列的动态阈值。 网络交换机接收分组，并且对于每个接收到的分组，网络交换机将分组接纳到与分组相关联的池和分组所针对的队列，如果（i）相关联的池的占用小于相应的 每池动态阈值，（ii）分组目的地队列的占用率小于相应的每队列动态阈值，否则丢弃该分组。

公开(公告)号：US20150271081A1

公开(公告)日：2015-09-24

申请号：US14221373

申请日：2014-03-21

Applicant: Cisco Technology, Inc.

Inventor： Subbarao Arumilli ,  Peter Newman

IPC: H04L12/825 ,  H04L12/801

CPC classification number: H04L47/25 ,  G06F13/385 ,  G06F2213/3808 ,  H04L47/11 ,  H04L47/29 ,  H04L47/31 ,  H04L47/32 ,  H04L47/6215

Abstract: Systems and methods are provided that enable flow aware buffer management. The method includes storing in a queue of a buffer a first type of traffic, storing in the queue of the buffer a second type of traffic, wherein the first type of traffic is less sensitive to latency than the second type of traffic, and when an amount of the first type of traffic meets or exceeds a first threshold, effecting flow control of the first type of traffic to slow a flow of the first type of traffic into the buffer. Flow control can be effected using packet marking or discarding packets. The methodology has particular utility in connection with managing elephant and mouse flows in a network switch.

Abstract translation: 提供了启用流感知缓冲区管理的系统和方法。 该方法包括在缓冲器的队列中存储第一类型的业务，在缓冲器的队列中存储第二类型的业务，其中第一类型的业务对第二类型业务的等待时间较不敏感，并且当 第一类型的流量的量满足或超过第一阈值，实现第一类型的流量的流量控制，以将第一类型的流量的流量减慢到缓冲器中。 可以使用分组标记或丢弃分组来实现流控制。 该方法对于在网络交换机中管理大象和鼠标流具有特别的实用性。

公开(公告)号：US09705808B2

公开(公告)日：2017-07-11

申请号：US14221373

申请日：2014-03-21

Applicant: Cisco Technology, Inc.

Inventor： Subbarao Arumilli ,  Peter Newman

IPC: H04L12/825 ,  H04L12/801 ,  G06F13/38 ,  H04L12/833 ,  H04L12/823 ,  H04L12/863

CPC classification number: H04L47/25 ,  G06F13/385 ,  G06F2213/3808 ,  H04L47/11 ,  H04L47/29 ,  H04L47/31 ,  H04L47/32 ,  H04L47/6215

Abstract: Systems and methods are provided that enable flow aware buffer management. The method includes storing in a queue of a buffer a first type of traffic, storing in the queue of the buffer a second type of traffic, wherein the first type of traffic is less sensitive to latency than the second type of traffic, and when an amount of the first type of traffic meets or exceeds a first threshold, effecting flow control of the first type of traffic to slow a flow of the first type of traffic into the buffer. Flow control can be effected using packet marking or discarding packets. The methodology has particular utility in connection with managing elephant and mouse flows in a network switch.