Method and device for setting up black hole media access control (MAC) forwarding table
A medium access control and forwarding table technology, applied in the field of communication networks, can solve the problems of occupying link bandwidth, affecting the wireless service application layer business of the base station, impacting other base stations, etc.
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Embodiment 1
[0048] The embodiment of the present invention provides a method for setting a black hole MAC forwarding table, the execution subject of the method provides an edge device SPE for the upper layer service, such as figure 1 As shown, the method includes the following steps:
[0049] Step 101, the SPE detects that the low-level service provider UPE connected to the SPE has an access circuit AC failure;
[0050] In this example, if figure 2 As shown, the base station is connected under the access ring formed by the lower-layer service provider edge equipment UPE, and a virtual leased line (Vi rtual Leased Line, VLL) is deployed on the UPE and connected to two upper-layer service provider edge equipment SPEs, and a virtual leased line is deployed (Private Wire, PW) redundancy, deploy BFD FOR PW at the same time. Wherein, the UPE deploys the VLL to connect to the SPE to form a PW, and the PW can also be understood as a logical pseudowire between the UPE and the SPE. Deploy BFD f...
Embodiment 2
[0064] Embodiments of the present invention provide a method for setting a blackhole MAC forwarding table, such as Figure 3A As shown, the method includes:
[0065] In step 301, the SPE receives a Label Distribution Protocol LDP notification based on the label distribution protocol LDP message of canceling the label interaction path LSP message sent by the UPE connected to the SPE, and then determines that the UPE connected to the SPE has an AC failure;
[0066] In this embodiment, the LDP notification received by the SPE may be an LDP NOTIFICATION message. The LSP is a packet forwarding path established by using a multi-protocol label switching (multi-protocol label switching, MPLS) protocol, and is a data transmission path formed by a set of label switching routers passed through during transmission.
[0067] It should be noted that step 305 is executed after this step is executed.
[0068] Step 302, when the SPE detects that the BFDFOR PW deployed between the SPE and the...
Embodiment 3
[0093] An embodiment of the present invention provides a device for setting a blackhole MAC forwarding table, which can provide an edge device SPE for upper-layer services, such as Figure 4 As shown, the device includes: a detection unit 401, a setting unit 402;
[0094] The detection unit 401 is configured to detect that the low-level service provider UPE connected to the SPE has an access circuit AC fault;
[0095] AC failure means that the link between the UPE and the base station fails, and it can also be understood as a failure of the base station;
[0096] The setting unit 402 is configured to set the dynamic medium access control MAC forwarding table learned on the virtual private line PW established with the UPE as a black hole MAC forwarding table.
[0097] The dynamic MAC forwarding table refers to the MAC forwarding table that can age according to the aging time configured by the user. SPEs or switches can add dynamic MAC forwarding table entries through the MAC a...
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