Method for notifying multicast source between MSDP and PIM

A multicast source and advertisement technology, applied in the field of cross-domain multicast, can solve the problems of inflexible networking application and increase the complexity of networking, and achieve the effect of flexible unified deployment and flexible configuration

Active Publication Date: 2008-07-30
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The essence is that RP and MSDP need to be deployed on the same device, the networking

Method used

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  • Method for notifying multicast source between MSDP and PIM
  • Method for notifying multicast source between MSDP and PIM

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0030] The method for notifying the multicast source between PIM and MSDP of the present invention includes two parallel aspects of PIM notifying the multicast source to MSDP and MSDP notifying the multicast source to PIM. Know each other's current active source information, and enable RP and MSDP to be deployed on different devices. Figure 1 is a schematic diagram of a PIM notifying a multicast source to an MSDP, and Figure 2 is a schematic diagram of an MSDP notifying a multicast source to a PIM. The present invention relates to 5 kinds of message types: Active Source Query (Active Source Query), Active Source Reply (Active Source Reply), Active Source Register (Active Source Register), Active Source Register stop (Active Source Register stop), Active Source Message (Active Source Message).

[0031] Because in the method of the present inv...

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Abstract

The invention discloses a method for notifying multicast source between PIM and MSDP boundary routers with flexible and simple networking application. A cross-domain multicast is implemented by adopting the method and when RP and MSDP are disposed in different devices, the RP and the MSDP can be notified of current active information with each other. The method comprises that the PIM notifies multicast source to the MSDP, and the MSDP notifies multicast source to the PIM. The PIM wherein notifies multicast source to the MSDP by a method that the MSDP transmits an active source inquire to an RP; and if effective multicast source exists in local area, the RP constitutes an inquire response message containing information of the multicast source and replies the message to the MSDP. The MSDP notifies multicast source to the PIM by a method that the MSDP transmits an active source registration message to an RP in the same domain according to new active source message in active source buffer; and if corresponding multicast is added on the RP in the domain and no corresponding multicast source/multicast source pair exists, and a PIM (S, G) additional message is transmitted to the active source.

Description

technical field [0001] The invention belongs to the field of cross-domain multicast technology, and in particular relates to a method for announcing a multicast source between MSDP and PIM. Background technique [0002] At present, PIM SM (protocol-independent-sparse mode) is still a recognized standard for intra-domain multicast. With the development of multicast services, more users will need to extend IP multicast services beyond the network boundaries of ISPs. In order to successfully implement inter-domain multicast services, in common networking methods, a solution combining PIM-SM / MBGP (Multi-Protocol BGP) / MSDP (Multicast Source Discovery Protocol: Multicast Source Discovery Protocol) is often used. PIM-SM is run on the entire network, MBGP is used to propagate multicast topology information between domains, and MSDP is used to propagate multicast source information. [0003] When there are multiple PIM-SM domains in the network, the MSDP edge router can enable the R...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04L12/56H04L12/715H04L29/06
Inventor 朱彩霞
Owner ZTE CORP
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