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Multicast data forwarding method and device capable of supporting virtual terminal

A multicast data and virtual terminal technology, applied in the field of network communication, can solve the problems that VM1 cannot receive multicast data, multicast filtering mechanism error filtering, etc.

Active Publication Date: 2012-09-19
ZTE CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0013] If an Extended Port of the Port Extender is not directly connected to a single terminal, that is, when an E-channel contains data of several terminals, the multicast filtering mechanism will cause false filtering
For example, when the terminal equipment uses the VEPA technology defined by the Qbg standard, such as Figure 4 As shown, when a multicast group member includes VM1 and VM3 in End Station 2, 3 and End Station 4, when VM3 sends multicast data, in this case, if the existing source port filtering technology is used, VM1 cannot receive The multicast data

Method used

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  • Multicast data forwarding method and device capable of supporting virtual terminal
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  • Multicast data forwarding method and device capable of supporting virtual terminal

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Embodiment Construction

[0047] The present invention specifically adopts the following technical solutions:

[0048] When a terminal using virtual terminal technology sends a non-unicast data frame to the Extended Bridge, the Port Extender passing through it adds / deletes the E-tag for it and forwards it to the Controlling Bridge. The internal Port Extender in the Controlling Bridge sends the data frame from the corresponding instantiated port to the bridge forwarding module (VLAN-aware Bridge Component) according to the E-CID of the data frame. VLAN-aware Bridge Component looks up the output port according to the destination address of the frame, and generates the destination E-CID value of the E-channel that forwards the data. Afterwards, the VLAN-aware Bridge Component passes the generated destination E-CID value to the Port Extender of the Controlling Bridge through the EM_UNITDATA.request primitive. In order to perform effective source port filtering, the information may also include the value of...

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Abstract

The invention discloses a multicast data forwarding method and a device capable of supporting a virtual terminal. A bridging forwarding module receives multicast data sent by the terminal and determines output ports, and when one output port is identical to an input port of the multicast data and the input port enables a reflection relaying function, Ingress_E-CID is not carried in forwarding message information, or the value of the Ingress_E-CID equals zero; and when the output port is identical to the input port of the multicast data and the input port is prohibited to enable the reflection relaying function, the Ingress_E-CID is carried in the forwarding message information, and the value of the carried Ingress_E-CID equals E-CID which is used when the multicast data are input. According to the multicast data forwarding method and the device capable of supporting the virtual terminal, a source port filtering mechanism is modified, so that a port extender (PE) which supports a virtual terminal technology can normally send and receive the data when the PE is subjected to multicast.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a multicast data forwarding method and device supporting virtual terminals. Background technique [0002] With the development of data communication network, the network bandwidth is getting bigger and bigger, and there are more and more terminal devices. In order to reduce the cost, the concept of converging the network and the data center is proposed, and it is supported by operators and equipment manufacturers. It has a good reputation. Prospects. DCB (Data Center Bridging, Data Center Bridge), as a device supporting the next-generation data center Ethernet, needs to meet the requirements of the next-generation data center network, including support for a large number of terminal server devices that have proliferated. [0003] For this reason, the IEEE802.1 DCB task group created two standard projects IEEE802.1Qbh and IEEE802.1Qbg to solve this problem. The Qbh...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L12/18H04L12/54H04L45/16
CPCH04L12/18H04L12/46H04L45/10H04L12/56H04L49/201H04L45/16H04L12/287
Inventor 李琳魏月华喻敬海敖婷
Owner ZTE CORP
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