Method and system for managing traffic in a packet network environment
    2.
    发明授权
    Method and system for managing traffic in a packet network environment 有权
    用于管理分组网络环境中的流量的方法和系统

    公开(公告)号:US06781990B1

    公开(公告)日:2004-08-24

    申请号:US10073638

    申请日:2002-02-11

    CPC classification number: H04L45/00 H04L45/54 H04L45/7453

    Abstract: A network switch includes a first content addressable memory (CAM), a second CAM, a binding lookup table (BLT), and a packet manager. The BLT extracts two sets of header information from ingressing packets. The first set is applied the first CAM to retrieve a service policy index. The second set of header information is applied to the second CAM to determine whether a connection already exists. If a connection exists, a flow transmission control block (fTCB) pointer is retrieved from the second CAM. Otherwise, if there is no current connection for the packet, a check is made of the service policy index to determine the level of service associated with the packet. Based on the assigned service level, a new fTCB pointer is retrieved, or alternatively, client and server TCB pointers are retrieved. The packet manager then processes the packet according to which TCB pointer is retrieved.

    Abstract translation: 网络交换机包括第一内容可寻址存储器(CAM),第二CAM,绑定查找表(BLT)和分组管理器。 BLT从入口包提取两组头信息。 第一组应用第一个CAM来检索服务策略索引。 第二组头信息被应用于第二CAM以确定连接是否已经存在。 如果存在连接,则从第二CAM检索流传输控制块(fTCB)指针。 否则,如果没有该分组的当前连接,则检查服务策略索引以确定与分组相关联的服务级别。 基于分配的服务级别,检索新的fTCB指针,或者替代地,检索客户端和服务器TCB指针。 然后,分组管理器根据检索到哪个TCB指针来处理分组。

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