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Method for processing two-layer data packet in Ether net exchanger

A layer 2 data packet and switch technology, applied in the field of Ethernet switches, can solve problems such as difficult implementation and expansion, and achieve the effect of suppressing broadcast behavior.

Active Publication Date: 2010-05-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The feature of the switch is that the above forwarding process is generally completed by an integrated ASIC chip, that is to say, the above forwarding process is automatically completed by the hardware, which is cheap, but not easy to expand, and difficult to implement some such as VPLS (VPLS: Virtual Private Advanced functions of LAN Service, virtual private local area network service), VPWS (VPWS: Virtual Private Wire Service virtual private line service)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] First introduce the QINQ function. The QINQ function is the tag stacking function, which is to add a layer of VLAN TAG (label) to the original data packet entering the switch and send it out of the switch. QINQ is divided into CUSTOM port and UPLINK port.

[0011] The CUSTOM port needs to set PVID (PVID: Port Vlan ID, also known as port default VLAN ID, that is, port default Vlan ID). This PVID is the VLAN TAG to be added to the original data packet. When a data packet enters the CUSTOM port, if the original data packet does not have a VLAN TAG, the data packet will add a layer of PVID VLAN TAG and go out from the UPLINK port. If the original data packet has a layer of VLAN TAG, the data packet will add another layer The VLAN TAG of PVID goes out from the UPLINK port, so the original VLAN TAG is the inner label, and the newly added VLAN TAG is the outer label.

[0012] When the data packet enters the UPLINK port, if the original data packet has two layers of VLAN TAG, ...

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PUM

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Abstract

The invention disclose a method for dealing with the two-layer package in Ethernet Switch, in which, the switch special operation port is set to the QINQ CUSTOM port, and PVID to be a special value without any other ports bundled. The special operation means VPLS and VPWS or other two-layer advanced function operation. Compared to existing technology, the invention achieves the special functions in the distributed switch, effectively inhibits the acts of finding no MAC address and VLAN broadcasting.

Description

technical field [0001] The invention relates to an Ethernet switch in the field of communication, in particular to a method for suppressing the processing of layer-2 data packets in a distributed switch. Background technique [0002] In a switch, when processing a layer-2 data packet, it first uses the destination MAC to look up the MAC table. If there is such a MAC address in the MAC table, the data packet is forwarded out from the outgoing port in the MAC table. If there is no such address in the MAC table, the data packet will be broadcast and forwarded in the VLAN carried by the data packet or in the default PVLAN. [0003] The feature of the switch is that the above forwarding process is generally completed by an integrated ASIC chip, that is to say, the above forwarding process is automatically completed by the hardware, which is cheap, but not easy to expand, and difficult to implement some such as VPLS (VPLS: Virtual Private Advanced functions of LAN Service, virtua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/931
Inventor 范成法宋晓娟李新宇
Owner ZTE CORP