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Multicast message transmission method in bidirectional PIM (Personal Information Management) of communication equipment and communication equipment

A technology for multicast messages and communication equipment, which is applied to devices that provide special services in branches, data exchange through path configuration, data exchange details, etc. It can solve the problems of restricting the use and occupation of existing methods, and save hardware forwarding. The effect of resources

Active Publication Date: 2012-05-16
NEW H3C TECH CO LTD
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Problems solved by technology

However, when the number of VLAN ports used as incoming interfaces is large, the existing method needs to create more multicast forwarding tables in the routing device, which takes up more hardware (routing device) forwarding resources, especially In the case of limited hardware forwarding resources, the use of existing methods is restricted

Method used

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  • Multicast message transmission method in bidirectional PIM (Personal Information Management) of communication equipment and communication equipment
  • Multicast message transmission method in bidirectional PIM (Personal Information Management) of communication equipment and communication equipment
  • Multicast message transmission method in bidirectional PIM (Personal Information Management) of communication equipment and communication equipment

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Embodiment Construction

[0040] In order to solve the problems existing in the prior art, the multicast packet forwarding method and communication equipment adopted in the present invention are to determine that the interface that the multicast packet arrives at is determined by the communication equipment according to the ACL issued for each interface. When the multicast message should reach the interface, modify the VLAN information or VPN information of the received multicast message to the reserved VLAN information or VPN information of the RP where the interface is located, and search and modify through the created multicast forwarding table The outbound interface corresponding to the multicast packet following the VLAN information or VPN information is forwarded. Therefore, the method of the present invention can not only realize the forwarding of multicast messages in bidirectional PIM, but also the communication equipment does not need to create multicast table items according to the number of ...

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Abstract

The invention discloses a multicast message transmission method in bidirectional protocol-independent multicast PIM (Personal Information Management) of communication equipment. The method comprises the following steps of: establishing a multicast transmission list by route equipment according to a route protocol; when receiving a multicast message, revising virtual local area network (VLAN) information or virtual private network (VPN) information of a message when the route equipment judges that an interface reached by the multicast message is the interface needing to be reached by the multicast message according to an access control list (ACL) sent by each interface, so as to match the information with the established multicast transmission list; and transmitting the multicast message with the revised information at a corresponding output interface of the multicast transmission list matched with the multicast message. The invention further discloses the communication equipment; with the adoption of the multicast message transmission method and the communication equipment of the invention, the multicast message transmission in the bidirectional PIM can be realized, the multicast transmission list does not need to be established by the communication equipment according to the quantity of VLAN openings of an input interface, so that hardware transmission resources are saved.

Description

technical field [0001] The invention relates to the technical field of multicast message processing, in particular to a method for forwarding multicast messages in bidirectional protocol-independent multicast (PIM) of a communication device and a communication device. Background technique [0002] PIM is a technology that uses the unicast routing table generated by static routing or any unicast routing protocol to provide routing for multicast. The routing device in the PIM network uses a VLAN port as the inbound interface of the routing device. For a general PIM (non-bidirectional PIM) multicast routing protocol, only a multicast forwarding table corresponding to a VLAN port is stored in the routing device. When the multicast message arrives at the routing device, the multicast forwarding table corresponding to the VLAN port is queried in the routing device, and the multicast message can be forwarded. [0003] Bidirectional PIM is a PIM that can be forwarded in both direct...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18H04L12/46H04L29/12H04L12/56H04L45/16
Inventor 谢瑞涛
Owner NEW H3C TECH CO LTD
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