Multicast implementing method based on independent multicast-special source protocol in flexible wire type tunnel
An independent multicast and soft line technology, applied in the branch office to provide special service devices, data exchange details, data exchange through path configuration, etc., can solve the problem of not solving the implementation method of edge network multicast
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[0019] In softwire, the most basic composition is several E-IP networks and an I-IP core network, wherein E-IP and I-IP can take IPv4 or IPv6 respectively, that is to say, the scheme of the present invention is applicable to IPv4 over IPv6 and IPv6 over IPv4 scenarios. Such a network connection can be used figure 1 to describe.
[0020] From the perspective of the establishment of the static multicast tree in the I-IP transmission network, at the beginning, each PE router needs to inform all other PE routers of the multicast address of the multicast tree with itself as the source, which is through MP-BGP The protocol is implemented, and the format of the message is as follows figure 2 shown. In the figure, SAFI_STATIC_SSM indicates the SAFI value corresponding to this message, the Next Hop field is filled with the multicast address to be announced, and the SNPA and NLRI information are both 0.
[0021] From the perspective of the establishment of the multicast tree, when ...
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