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    • 1. 发明申请
    • METHOD AND APPARATUS FOR RAPID SWITCHOVER FROM PRIMARY TO STANDBY MULTICAST TREES
    • 从主要到多媒体条的快速切换的方法和装置
    • WO2012015582A1
    • 2012-02-02
    • PCT/US2011/043491
    • 2011-07-11
    • ALCATEL-LUCENT USA INC.ALCATEL IP NETWORKS, LTD.KUDITIPUDI, SivaramakrishnaISHWAR, PrashanthVENKATARAMAN, SrikrishnanJAIN, Pradeep, G.FINE, JeremyLOCKHART, Will
    • KUDITIPUDI, SivaramakrishnaISHWAR, PrashanthVENKATARAMAN, SrikrishnanJAIN, Pradeep, G.FINE, JeremyLOCKHART, Will
    • H04L12/18H04L12/56
    • H04L12/1877H04L45/16H04L45/22H04L45/28H04L45/48H04L45/50
    • A capability is provided for switching between primary and standby multicast trees on a network egress node of a multicast network. The network egress node includes a first MPLS LABEL Record including a first tree identifier of the first multicast tree, a second MPLS LABEL Record including a second tree identifier of the second multicast tree, and a MULTICAST Record including a plurality of primary tree identifiers and a plurality of standby tree identifiers. The MPLS LABEL Records include parameters, respectively, where the values of the parameters are indicative of respective packet processing rules to be applied for determining whether to accept or discard packets. When the parameter of an MPLS LABEL Record is set to a first value, a determination as to whether to accept or discard a packet received via the associated multicast tree is performed by comparing the tree identifier of the MPLS LABEL Record only to primary tree identifiers of the MULTICAST Record. When the parameter of an MPLS LABEL Record is set to a second value, a determination as to whether to accept or discard a packet received via the associated multicast tree is performed by comparing the tree identifier of the MPLS LABEL Record to primary tree identifiers of the MULTICAST Record or standby tree identifiers of the MULTICAST Record.
    • 提供了用于在组播网络的网络出口节点上的主要和备用组播树之间进行切换的能力。 网络出口节点包括包括第一多播树的第一树标识符的第一MPLS标签记录,包括第二多播树的第二树标识符的第二MPLS LABEL记录和包括多个主树标识符的MULTICAST记录和 多个备用树标识符。 MPLS LABEL记录分别包括参数,其中参数的值表示要应用于确定是否接受或丢弃分组的各个分组处理规则。 当MPLS标签记录的参数被设置为第一值时,通过将MPLS LABEL记录的树标识符与仅主节点标识符的主树标识符进行比较来执行是否接受或丢弃经由相关联的多播树接收的分组的确定 MULTICAST记录。 当MPLS LABEL记录的参数设置为第二个值时,通过将MPLS LABEL记录的树形标识符与对应的多播树的主树标识符进行比较来执行是否接受或丢弃通过关联的多播树接收到的数据包的确定 MULTICAST MULTICAST记录的记录或备用树标识符。