公开(公告)号：US20070064593A1

公开(公告)日：2007-03-22

申请号：US11515302

申请日：2006-09-01

申请人： Tim Scale ,  Greg Gohman ,  Dmitri Fridman ,  Alan Doucette ,  Paul Fischer ,  John Pokropinski ,  John Dougherty ,  Jim Allen

发明人： Tim Scale ,  Greg Gohman ,  Dmitri Fridman ,  Alan Doucette ,  Paul Fischer ,  John Pokropinski ,  John Dougherty ,  Jim Allen

IPC分类号： H04L12/26

CPC分类号： H04L43/0894 ,  H04L12/2801 ,  H04L41/0654

摘要： A Cable Access Module is periodically monitored to detect lock-up condition on an upstream channel. Traffic activity on an upstream channel of the CAM is compared to predetermined criteria to determine lock-up. If CMs are detected being coupled to the CAM, a PING message is sent to a group of CMs. If the PING is not acknowledged, a round robin counter is used to cycle through modems sending PINGs thereto. If no PINGs are acknowledged, the CAM is deemed satisfactory if upstream bytes over the upstream channel are detected. If not, an escalating maintenance subroutine implements corrective action of increasing magnitude during based on a recovery count variable that increments with each successive pass before returning to the monitor period parent routine. If CMs were detected as coupled to the CAM, but some data has been passed over the upstream channel being evaluated, the escalating maintenance subroutine is invoked.

摘要翻译： 周期性地监视有线接入模块以检测上行信道上的锁定状态。 将CAM上游信道上的业务活动与预定标准进行比较，以确定锁定。 如果检测到CM被耦合到CAM，则将PING消息发送到一组CM。 如果PING未被确认，则循环计数器用于循环通过向其发送PING的调制解调器。 如果没有PING被确认，则如果检测到上游信道上的上游字节，则CAM被认为是令人满意的。 如果不是，升级的维护子程序在恢复计数变量之前，根据恢复计数变量执行增加幅度的校正动作，恢复计数变量在返回监视周期父程序之前，每次连续通过。 如果CM被检测为耦合到CAM，但是一些数据已经通过被评估的上行信道传递，则升级的维护子程序被调用。