Method and device for realizing double-virtual local area network (VLAN) cross forwarding

Abstract

The invention discloses a method and a device for realizing double-virtual local area network (VLAN) cross forwarding in a network bridge; the method comprises the following steps that: (A10) a VLAN conversion table and a VLAN function configuration table are configured, the VLAN conversion table is used for converting system V interface definition (SVID) and common variable immunodeficiency (CVID) carried in dataflow into INTER_SVID and INTER_CVID; (A20) a VLAN exchange mode configuration table is configured, the forwarding mode of the input dataflow is determined according to the VLAN exchange mode configuration table, and traditional network bridge exchange business is processed according to a traditional network bridge; otherwise, the step (A30) is executed; (A30) a VLAN cross connection table is configured, the information of a corresponding result is searched in the VLAN cross connection table according to the searched information of the input dataflow; if the information of the result is found, the dataflow is forwarded according to the information of the result; and otherwise, processing is carried out according to a traditional network bridge method. According to the invention, forwarding is carried out directly according to the link information of an access point, so that the one point-to-more point cross connection is realized; the cross forwarding of different grain sizes is realized flexibly based on the SVID or SVID+CVID; and the more point-to-one point VLAN cross setting can be completed based on the convergence of the SVID and the CVID.

Description

technical field [0001] The present invention relates to the Ethernet switching technology in the technical field of data communication, in particular to a method and a device for realizing double-VLAN cross-forwarding, which can be used for Ethernet convergence networks and access nodes defined in TR101 (for example, when the access node adopts GPON technology), it can also be used in other places that need to exchange data streams according to VLAN. Background technique [0002] With the rapid development of data communication technology, a variety of network applications continue to emerge, such as: basic Internet applications, entertainment videos (including broadcast TV, video on demand, etc.), video conferencing, VOIP (Internet telephony), games and various commercial applications, etc. However, in actual network applications, such a situation is often encountered: most of the same type of network services (such as IPTV) correspond to a specific broadband gateway (serv...

AI Technical Summary

Problems solved by technology

[0010] (1) Only bidirectional VLAN point-to-point cross-connection is supported, and one forwarding direction cannot be cross-connected according to VLAN, and the other direction is forwarded according to address lookup

Cannot support point-to-multipoint cross-connect

[0011] (2) The cross granularity cannot be flexibly configured

[0012] It can be seen that the existing two-way VLAN cross-connect method and device can not meet the user's requirements well.

Images