Label information transmission method and device
A technology of tag information and transmission method, which is applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of wasting transmission resources, BGPUpdate message waste, discarding, etc., to reduce the number of transmissions, reduce equipment burden and network burden Effect
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[0041] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a label information transmission method, which is applied to an MPLS L2VPN network including a first PE device and a second PE device that are BGP neighbors to each other (the MPLS L2VPN network Specifically, it can be an MPLS L2VPN network in the Kompella mode), with figure 1 The application scenario shown is an example. The first PE device is PE1, and the second PE device is PE2; or, the first PE device is PE2, and the second PE device is PE1; The device is PE2 as an example for illustration.
[0042] Based on the above application scenarios, such as image 3 As shown, the method includes the following steps:
[0043] Step 301, after the second PE device successfully establishes a BGP neighbor relationship with the first PE device (that is, the BGP neighbor state machine is in the ESTABLISHED (established) state), the second PE device collects the Import RT attributes ...
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