发明授权
US08774191B2 Method and apparatus for auto detection of AAL5 type frames for VCC and VPC switches
有权
用于自动检测VCC和VPC交换机的AAL5型帧的方法和装置
- 专利标题： Method and apparatus for auto detection of AAL5 type frames for VCC and VPC switches
- 专利标题（中）： 用于自动检测VCC和VPC交换机的AAL5型帧的方法和装置
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申请号： US12896161申请日： 2010-10-01
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公开(公告)号： US08774191B2公开(公告)日： 2014-07-08
- 发明人: John Frank Pillar , Bernard St. Denis , Bernard Marchand
- 申请人： John Frank Pillar , Bernard St. Denis , Bernard Marchand
- 申请人地址： US MD Hanover
- 专利权人： Ciena Corporation
- 当前专利权人： Ciena Corporation
- 当前专利权人地址： US MD Hanover
- 代理机构： Muncy, Geissler, Olds & Lowe, P.C.
- 主分类号： H04L12/28
- IPC分类号： H04L12/28
摘要：
In Asynchronous Transfer Mode (ATM) communications networks, certain congestion control features, such as Partial Packet Discard (PPD) and Early Packet Discard (EPD), operate on ATM cells that have been segmented from ATM Adaptation Layer #5 (AAL5) frames (packets). AAL5 frames are automatically detected by observing transitions of an indicator in the ATM cell header unique to AAL5 traffic. Automatic detection of AAL5 traffic allows enablement of packet-aware cell discarding techniques such as PPD and EPD on a Virtual Channel Connection (VCC) basis, whether in a switch for a VCC or for a Virtual Path Connection (VPC) to which the VCC belongs.
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