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Metadata transmission method and device

A technology of transmission method and transmission device, which is applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve the problem of not supporting BIER message carrying metadata, etc., and achieve the effect of improving data transmission efficiency and accuracy

Inactive Publication Date: 2018-03-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for BIER networks, the current data plane encapsulation and control plane protocols do not support BIER packets to carry metadata

Method used

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  • Metadata transmission method and device

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Experimental program
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Effect test

specific Embodiment 1

[0078] The embodiment of the present invention describes the detailed process of using the ISIS protocol to advertise the attribute of the cross-domain forwarding capability in the present invention.

[0079] Figure 8 It is the networking diagram of BIER, such as Figure 8 As shown, BFIR11 is a bit index ingress router, BFR11 and BFR12 are bit index forwarding routers, BFER11 is a bit index egress router, and the bit index routers run the ISIS protocol.

[0080]When a bit index router (any bit index router in BFIR11, BFR11, BFR12, BFER11) encapsulates LSPDU (link State Packet Data Unit, link state data message unit), it encapsulates ISIS BIER info-Sub-TLV information, where BIER info Sub-TLV carries BIER Metadata Sub-Sub-TLV. After encapsulating the LSPDU, the bit index router uses the ISIS flooding mechanism to flood in the BIER domain. When other bit index routers in the BIER domain receive the LSPDU After that, it can be judged that the index router supports Metadata dat...

specific Embodiment 2

[0081] The embodiment of the present invention describes the detailed process of using the OSPF protocol to advertise the attribute of the cross-domain forwarding capability in the present invention.

[0082] still with Figure 8 For example, when a bit index router (any bit index router in BFIR11, BFR11, BFR12, BFER11) encapsulates LSA (link State Advertise, Link State Advertisement), it encapsulates OSPF BIER Sub-TLV information, where BIER Sub-TLV Carrying the BIER Metadata Sub-Sub-TLV, the bit index router uses the OSPF flooding mechanism to flood the BIER domain after encapsulating the LSA. When other bit index routers in the BIER domain receive the LSA, they can The content indicated by the carried BIER metadata Sub-Sub-TLV determines that the bit index router supports Metadata data.

specific Embodiment 3

[0083] still with Figure 8 For example, the bit index routers of the BIER network only support the BGP protocol and do not run the intra-domain routing protocol. BGP peers are established between BFIR11 and BFR11 and BFR12, and BGP peers are established between BFR11, BFR12 and BFER11 to communicate with each other through BGP. routing.

[0084] When the bit index router (any bit index router between BFIR11, BFR11, BFR12 and BFIR11) encapsulates the BGP update message message, the BGP BIER TLV information is encapsulated, and the BIER TLV information carries the BIER metadata Sub-TLV proposed by the present invention , the Sub-TLV carries the bit index router metadata capability attribute information, after the peer position index router receives the update message, it can judge the bit index according to the content indicated by the BIER metadata Sub-Sub-TLV carried in the message The index router supports metadata data, and supports the receiving and processing of metadata...

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Abstract

The invention discloses a metadata transmission method and device. The method comprises the steps of expanding a protocol message in a routing protocol, wherein the expanded protocol message supportsan announcement that devices in a bit indexed explicit replication BIER network have the capacity of processing metadata.

Description

technical field [0001] The present invention relates to a metadata transmission technology in a Bit Indexed Explicit Replication (BIER, Bit Indexed Explicit Replication) network, in particular to a metadata transmission method and device. Background technique [0002] IP multicast technology realizes efficient data transmission from point to multipoint in IP network. It can effectively save network bandwidth and reduce network load, so it is widely used in real-time data transmission, multimedia conference, data copy, Internet TV (IPTV, Internet Protocol Television), games and simulation. The current multicast technology is generally implemented by Protocol Independent Multicast (PIM, Protocol Independent Multicast) protocols (including PIM-SM, PIM-DM), Multicast Source Discovery Protocol (MSDP, Multicast Source Discovery Protocol), etc. These multicast protocols A common feature of all is the need to build a control plane multicast tree, using this multicast tree to make t...

Claims

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Application Information

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IPC IPC(8): H04L12/761H04L29/08H04L45/16
CPCH04L45/16H04L67/561H04L65/40
Inventor 胡方伟
Owner ZTE CORP
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