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    • 2. 发明申请
    • INFRASTRUCTURE-EXCLUSIVE SERVICE FORWARDING
    • 基础设施专用服务转发
    • WO2017095815A1
    • 2017-06-08
    • PCT/US2016/064017
    • 2016-11-29
    • CISCO TECHNOLOGY, INC.
    • KUMAR, Surendra M.BOSCH, Hendrikus G. P.LEUNG, Kent K.PATRA, Abhijit
    • H04L12/701
    • H04L45/74H04L45/00H04L45/7453H04L49/3009
    • A method is provided in one example embodiment and includes receiving at a network element a packet including a Network Services Header ("NSH"), in which the NSH includes an Infrastructure ("I") flag and a service path header comprising a Service Index ("SI"), and a Service Path ID ("SPI") and determining whether the I flag is set to a first value. The method further includes, if the I flag is set to the first value, setting the I flag to a second value and forwarding the packet to the service function that corresponds to the SI for processing. The method still further includes, if the I flag is not set to the first value, decrementing the SI and making a forwarding decision based on a new value of the SI and the SPI.
    • 在一个示例实施例中提供了一种方法,并且包括在网络元件处接收包括网络服务报头(“NSH”)的分组,其中NSH包括基础设施(“I”), 标志和包括服务索引(“SI”)和服务路径ID(“SPI”)的服务路径首标,并且确定I标志是否被设置为第一值。 该方法还包括:如果I标志被设置为第一值,则将I标志设置为第二值并且将该分组转发到对应于用于处理的SI的服务功能。 该方法还包括,如果I标志没有被设置为第一值,则递减SI并且基于SI和SPI的新值进行转发决定。