Forwarding method based on virtual LAN mapping and access equipment

A virtual local area network and access device technology, applied in the forwarding method based on virtual local area network mapping and the field of access devices, can solve the problems of increasing software processing complexity, MAC address aging, and occupying more system resources, so as to reduce the burden of software processing , reduce occupancy, and realize the effect of business forwarding

Active Publication Date: 2010-10-27
北京紫光通信科技集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] 1. Since VLAN Mapping uses flow rules in both directions, it takes up more system resources
[0015] 2. Since the source MAC addresses of bidirectional data streams are learned in different VLANs, broadcast flooding will occur
[0016] 3. In order to avoid the possible flooding of MAC address learning in different VLANs, the software needs to add the MAC address to the mapped VLAN. At the same time, the aging of the MAC address must be considered, which increases the complexity of software processing.

Method used

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  • Forwarding method based on virtual LAN mapping and access equipment
  • Forwarding method based on virtual LAN mapping and access equipment
  • Forwarding method based on virtual LAN mapping and access equipment

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specific example

[0106] Such as Figure 5 As shown, the port Port X of the access device supports two kinds of services. The MAC addresses of the two service devices are MAC 1 and MAC 2 respectively. The home gateway is configured with VLAN 1 for service device 1 and VLAN 2 for service device 2; The VLAN mapping table configured for Port X of the access device is: VLAN 1-->VLAN 101; VLAN 2-->VLAN 201. At the same time, delete the MAC address forwarding entries corresponding to MAC 1 and MAC 2; configure the MAC address learning mode of Port X as software learning mode. The access device receives a packet from service device 1 from Port X, but the source MAC address of the packet is not found in the MAC based VLAN table: MAC 1, and the source MAC address of the packet is not found in the MAC address forwarding table Address: MAC 1 and C_VLAN in the message: VLAN 1, then send the message to the CPU, and the CPU finds the SP_VLAN corresponding to C_VLAN: VLAN 1 in the message in the VLAN mapping...

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Abstract

The invention discloses a forwarding method based on VLAN mapping and an access device thereof. In the method, a VLAN distribution table based on MAC is maintained according to a VLAN mapping table. The VLAN distribution table comprises the corresponding relation between MAC addresses of devices on the user side and VLAN labels on the network side. The VLAN labels on the network side are corresponding to the VLAN labels of the devices on the user side. A source MAC address of a message which is sent out from the user side is used for searching for the VLAN distribution table. According to thesearching result, the VLAN label of the message on the network side is determined. And the VLAN label of the message on the user side is replaced by the determined VLAN label on the network side. Themessage is forwarded according to the target MAC address of the message and the replaced VLAN label on the network side. The resource occupation of the system is reduced.

Description

technical field [0001] The invention relates to the technical field of service processing, in particular to a forwarding method and access equipment based on virtual local area network mapping. Background technique [0002] At present, it is increasingly proposed in operator networks that different services of users can be finely managed, and each user and each service can be identified through virtual local area network (VLAN, Virtual Local Area Network) information. Multiple service types of users, such as Internet service, IP TV (IPTV) service, IP voice (VOIP, Voice Over IP) service, are aggregated to the home gateway (HG, Home Gateway), and the home gateway allocates different VLANs for each service Information, for the sake of ease of maintenance, the home gateway configuration requirements of different users are unified. The concept of VLAN mapping (Mapping) is proposed under this background. Since the home gateway of each user allocates the same VLAN for the same ty...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/46H04L45/50H04L45/74
Inventor 朱严峰胡元章何戟
Owner 北京紫光通信科技集团有限公司
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