Method for multicast data uninterrupted repeat

A multicast data and multicast technology, which is applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problem of unacceptable multicast data blocking at the minute level, and meet the requirements of real-time performance and improve efficiency Effect

Inactive Publication Date: 2006-11-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Therefore, in the current technical solution, when the root port of the spanning tree protocol is switched, minute-level multicast data blocking will be generated between the switches. Broadcast data blocking is not allowed

Method used

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  • Method for multicast data uninterrupted repeat
  • Method for multicast data uninterrupted repeat
  • Method for multicast data uninterrupted repeat

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Embodiment Construction

[0029] The present invention is further elaborated below in conjunction with accompanying drawing and embodiment:

[0030]In the present invention, the three-layer switch is docked by VLANs that include multiple physical ports, and the multicast routing protocol is run on the docked VLAN interface, and the spanning tree protocol is run on all Ethernet ports included in the docked VLAN; the state of the port It is defined as two types: multicast forwarding state and blocked multicast forwarding state.

[0031] Such as figure 2 As shown, two Layer 3 switches are interconnected, Layer 3 switch L3(A) and Layer 3 switch L3(B) run the multicast routing protocol, and they are interconnected through Layer 3 interfaces with the same VLAN number, Layer 3 switch L3(A) ), P3 and P4 ports of Layer 3 switch L3(B) are Ethernet ports connected to the VLAN, and these ports are configured in the same VLAN. P1 port and P3 port are physically connected, and P2 port It is physically connected t...

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Abstract

The present invention discloses a multicasting data no-break transmitting method, referring to computer network communication technology field. It contains when non-root bridge three-layer equipment protocol root port switching, non-root bridge three-layer equipment configuring new root port as multicasting transmitting port, and through new root port transmitting neighbor finding protocol message to root bridge three-layer equipment appointed port, root bridge three-layer equipment receiving neighbor finding protocol message configuring appointed port multicasting transmitting port, through said appointed port responding neighbor finding protocol message to new root port, non-root bridge three-layer equipment receiving root bridge three-layer equipment responded neighbor finding protocol message, continue transmitting link establishment and multicasting data between new root port and said appointed port through said link. The present invented method can shorten multicasting retransmission blockage time interval duo to root port switching, to make time interval dropping to 10 millisecond level, satisfying multicasting service real time requirement, and raising multicasting retransmission efficiency.

Description

[technical field] [0001] The invention relates to the technical field of computer network communication, in particular to a method for maintaining uninterrupted forwarding of multicast data. [Background technique] [0002] Such as figure 1 As shown, it is a basic structural diagram of a computer communication network. User traffic is connected to a layer-3 switch through the access network, and multiple layer-3 switches converge the traffic to the upper-level layer-3 switch (as shown in the dotted line box in the figure). Through the aggregation function of the three-layer switch, the user's traffic is finally sent to the Internet service provider through the core network, and the service provided by the Internet service provider for the user is transmitted to the user in the opposite direction, thereby realizing the end-to-end connection of the service. Among them, the connection of these three-layer switches forms the aggregation network of the access layer. Generally spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/753H04L29/06
Inventor 牛乐宏
Owner HUAWEI TECH CO LTD
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