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    • 7. 发明授权
    • Method for measuring performance of MPLS LSP
    • 测量MPLS LSP性能的方法
    • US07561524B2
    • 2009-07-14
    • US11510405
    • 2006-08-25
    • Kyung Gyu ChunSoon Seok Lee
    • Kyung Gyu ChunSoon Seok Lee
    • H04L12/26
    • H04L69/40H04L43/00H04L43/0823H04L69/22
    • Provided is a method for measuring performance of a multi-protocol label switching label switched path (MPLS LSP), using a fast failure detection (FFD) packet among MPLS operation and management (OAM) packets recommended by International Telecommunication Union-Telecommunication standardization sector (ITU-T) Y.1711 to detect a packet error generated in the MPLS LSP and newly defining bytes not used in the FFD frame to use the bytes for parity check.An ingress node performs the steps of: calculating a parity value of an MPLS packet as byte interleaved parity (BIP)-8 before transmitting the MPLS packet; storing the calculated parity value of the MPLS packet in an MPLS OAM packet of an FFD structure; and transmitting the MPLS OAM packet whenever transmitting the MPLS packet. And an egress node performs the steps of: calculating a parity value of a received MPLS packet; comparing a parity value of an MPLS packet stored in the MPLS OAM packet with the parity value of the received MPLS packet; and when the two parity values are not identical, determining that an error has occurred in the MPLS packet and discarding the MPLS packet.
    • 提供了一种使用国际电信联盟电信标准化部门推荐的MPLS操作和管理(OAM)分组中的快速故障检测(FFD)分组来测量多协议标签交换标签交换路径(MPLS LSP)的性能的方法( ITU-T)Y.1711检测在MPLS LSP中生成的分组错误,并且新定义FFD帧中未使用的字节,以使用字节进行奇偶校验。 入口节点执行以下步骤:在发送MPLS分组之前,计算MPLS分组的奇偶校验值作为字节交织奇偶校验(BIP)-8; 将所计算的所述MPLS分组的奇偶校验值存储在FFD结构的MPLS OAM分组中; 并在发送MPLS报文时发送MPLS OAM报文。 并且出口节点执行以下步骤:计算接收的MPLS分组的奇偶校验值; 将存储在MPLS OAM分组中的MPLS分组的奇偶校验值与接收的MPLS分组的奇偶校验值进行比较; 并且当两个奇偶校验值不相同时,确定在MPLS分组中已经发生错误并丢弃MPLS分组。