WO2022262579A1 - Procédé et appareil de transmission de paquets - Google Patents

Procédé et appareil de transmission de paquets Download PDF

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Publication number
WO2022262579A1
WO2022262579A1 PCT/CN2022/096604 CN2022096604W WO2022262579A1 WO 2022262579 A1 WO2022262579 A1 WO 2022262579A1 CN 2022096604 W CN2022096604 W CN 2022096604W WO 2022262579 A1 WO2022262579 A1 WO 2022262579A1
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multicast
network device
correspondence
parameter set
identifier
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PCT/CN2022/096604
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English (en)
Chinese (zh)
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耿雪松
李振斌
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/16—Multipoint routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/34—Source routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/48—Routing tree calculation

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a message transmission method and device.
  • Segment routing internet protocol version 6 is a new generation of internet protocol based on internet protocol version 6 (IPv6) and segment routing (SR) , IP) bearer protocol, which can unify traditional complex network protocols.
  • Nodes in the network can specify a series of operations (instructions) in the message, and when the message is forwarded in the network, other network nodes along the way will process the message according to the specified operations.
  • the operation specified by the segment routing can control the forwarding path of the message, and it does not need to maintain the flow-by-flow state in other nodes in the network except the head node.
  • SR defines a binding segment ID (binding segment ID, BSID).
  • BSID is bound to an SR policy (Policy), and is instantiated as a list of SIDs when specifying a node.
  • Policy SRv6 policy
  • the present application provides a message transmission method and device for implementing multicast transmission of SRv6 service data that does not support unicast.
  • the first aspect of the present application provides a message transmission method, the method includes: a first network device serving as a root node receives a first data message from a second network device, the first data message includes a multicast binding segment Identify the Multicast BSID; the first network device obtains the second data packet according to the Multicast BSID, the second data packet includes a parameter set, and the parameter set is used to indicate to send the second data packet to the network device as a leaf node; the first network device Send the second data packet to the network device serving as the leaf node.
  • the root node and the leaf node in this application are nodes in the same multicast tree
  • the first network device is the root node in the multicast tree
  • the first network device can obtain the first data message
  • the first data packet includes a multicast binding segment identifier
  • the multicast binding segment identifier can be matched to a parameter set
  • the parameter set can indicate a leaf node in the multicast tree
  • the first network device can use the parameter It is encapsulated into the first data message to form the second data message
  • the service data passing through the unicast domain can be transformed into multicast transmission, which meets the multicast requirement of SRv6 service data that does not support unicast.
  • the first network device obtaining the second data message according to the Multicast BSID in the above steps includes: the first network device obtains a parameter set according to the Multicast BSID and the first correspondence, and the first correspondence includes the Multicast BSID and A parameter set: the first network device obtains the second data packet based on the first data packet and the parameter set.
  • the first network device stores a first correspondence
  • the first correspondence includes the relationship between the Multicast BSID and the parameter set, that is, the Multicast BSID is in one-to-one correspondence with the parameter set
  • the first network device can Match the parameter set from the first correspondence according to the Multicast BSID in the first data message, and encapsulate and generate the second data message for multicast transmission, facilitate the conversion from unicast to multicast, and improve the feasibility of the scheme.
  • the above steps where the first network device obtains the second data packet according to the Multicast BSID include: the first network device obtains an identifier according to the Multicast BSID and the first correspondence, and the identifier is used to identify the network as a leaf node The multicast tree to which the device belongs, the first correspondence includes the Multicast BSID and the identifier; the first network device obtains the parameter set according to the identifier and the second correspondence, and the second correspondence includes the identifier and the parameter set; the first network device obtains the parameter set based on the first The data packet and the parameter set are used to obtain the second data packet.
  • the first network device stores the first corresponding relationship and the second corresponding relationship, wherein the first corresponding relationship is the relationship between the Multicast BSID and the identifier, and the identifier is the group to which the leaf node of the multicast transmission belongs
  • the identification of the multicast tree, the second corresponding relationship is the association between the above identification and the parameter set
  • the first network device can determine the identification of the multicast tree to be transmitted according to the Multicast BSID in the first data message, and correspondingly according to the multicast
  • the identification of the tree determines the parameter set of the leaf node to encapsulate and generate the second data message for multicast transmission, facilitates the conversion from unicast to multicast, and improves the feasibility of the scheme.
  • the parameter set includes a bit string, and the set bit in the bit string corresponds to a network device serving as a leaf node; or, the parameter set includes a SID list, and the SID list includes a list indicating the network device serving as a leaf node. Information.
  • the multicast tree where the leaf node is located may be a bit index explicit replication (BIER) multicast tree, and the BIER multicast tree uses the bits set in the bit string as The network devices of the leaf nodes are corresponding; perhaps, the multicast tree where the leaf nodes are located can be a point-to-multipoint (point-to-multipoint, P2MP) multicast tree, and the parameter set can include a segment identifier list, which includes The segment identifier or bit string of the leaf node to be transmitted.
  • the parameter set includes a bit string or a segment identification list so that the parameter set can indicate a leaf node, which facilitates the conversion from unicast to multicast and improves the feasibility of the solution.
  • the method before the first network device serving as the root node receives the first data packet from the second network device in the above step, the method further includes: the first network device according to the network device to which the leaf node belongs The multicast tree determines the parameter set; the first network device obtains the first corresponding relationship according to the parameter set, and the first network device obtains the second corresponding relationship according to the first corresponding relationship, and the second corresponding relationship includes Multicast BSID and identification, and the identification is used to identify parameters The multicast tree to which the set belongs.
  • the first network device before the first network device receives the first data message, the first network device also needs to build or update the multicast tree according to the report message of the leaf node, and generate or update the first corresponding relationship accordingly, Then save the first corresponding relationship, the first network device can also determine the corresponding relationship between the Multicast BSID and the multicast tree to which the parameter set belongs according to the corresponding relationship between the Multicast BSID and the parameter set, so as to obtain the indication of the association between the Multicast BSID and the identifier Second Correspondence. The first network device may generate the second data packet according to the first data packet and the first correspondence relationship, so as to improve the feasibility of the solution.
  • the method further includes: the first network device sends the second correspondence to the second network device.
  • the first network device may send the second correspondence to the second network device, so that the second network device
  • the second network device receives the multicast message, it can determine the Multicast BSID according to the identifier in the multicast message and the stored second corresponding relationship, and encapsulate and generate the first data message to improve the feasibility of the solution.
  • the method before the first network device serving as the root node receives the first data packet from the second network device in the above step, the method further includes: the first network device according to the group to which the network device serving as the leaf node belongs The tree broadcasting determines the parameter set; the first network device obtains the second correspondence according to the parameter set; the first network device obtains the first correspondence according to the identifier in the second correspondence.
  • the first network device before the first network device receives the first data message, the first network device also needs to build or update the multicast tree according to the report message of the leaf node, and according to the established or updated multicast tree ID, correspondingly generate or update the second correspondence, and generate or update the first correspondence according to the relationship between the multicast tree indicated by the identifier and the parameter set, and save the above-mentioned first correspondence and second correspondence, so that the first network The device can generate the second message according to the first data message, the first correspondence and the second correspondence, so as to improve the feasibility of the solution.
  • the method further includes: the first network device sends the first correspondence to the second network device.
  • the second network device stores the first correspondence from the first network device, and when the second network device receives the multicast packet, it can determine the Multicast BSID by the first correspondence, and encapsulates and generates the first data packets to improve the feasibility of the solution.
  • the second aspect of the present application provides a message transmission method, the method includes: a second network device receives a multicast message from a multicast source, and the multicast message includes group information of the multicast source; The broadcast message obtains the first data message, and the first data message includes the multicast binding segment identification Multicast BSID corresponding to the multicast source group information; the second network device sends the first data to the first network device as the root node message.
  • the second network device after the second network device obtains the multicast message, it can encapsulate the multicast message according to the Multicast BSID corresponding to the multicast source group information in the multicast message to generate the first data message, and Send the first data message to the first network device, the first network device is the root node of the multicast tree, and the message of the multicast source is converted from the unicast domain to meet the requirements of SRv6 service data that does not support unicast Multicast requirements.
  • the method before the second network device receives the multicast packet from the multicast source in the above step, the method further includes: the second network device receives the first correspondence from the first network device, the first correspondence The relationship includes a Multicast BSID and an identifier, which is used to identify the multicast tree to which the network device serving as a leaf node belongs, and the multicast source group information includes the identifier.
  • the second network device stores the first correspondence from the first network device, the first correspondence indicates the association between the Multicast BSID and the identifier, and the second network device may, according to the multicast source in the multicast message, The identification included in the group information matches the corresponding Multicast BSID, and the multicast packet is encapsulated to generate the above-mentioned first data packet, which improves the feasibility of the solution.
  • the method before the second network device receives the multicast packet from the multicast source in the above step, the method further includes: the second network device receives the first correspondence from the first network device, the first correspondence The relationship includes Multicast BSID and identifier, the identifier is used to identify the multicast tree to which the network device as a leaf node belongs, and the multicast source group information includes the identifier.
  • the second network device does not need to perceive the parameter set, and only saves the first correspondence from the first network device, and the first correspondence indicates the association between the Multicast BSID and the identifier, that is, the second network device can
  • the above-mentioned Multicast BSID is determined according to the identifier in the multicast source group information, so as to encapsulate and generate the above-mentioned first data packet, and improve the feasibility of the solution.
  • the third aspect of the present application provides a message transmission device, the device is set on the first network device as the root node, including: a receiving unit, used to receive the first data message from the second network device, the first The data message includes the multicast binding segment identifier Multicast BSID; the acquisition unit is used to obtain the second data message according to the Multicast BSID, and the second data message includes a parameter set, and the parameter set is used to indicate sending to the network device as a leaf node A second data packet; a sending unit, configured to send the second data packet to a network device serving as a leaf node.
  • the device is used to execute the method of the aforementioned first aspect or any implementation manner of the first aspect.
  • the fourth aspect of the present application provides a device for message transmission, including: a receiving unit, configured to receive a multicast message from a multicast source, where the multicast message includes group information of the multicast source; The multicast message obtains the first data message, and the first data message includes the multicast binding segment identifier Multicast BSID corresponding to the multicast source group information; the sending unit is used to send the first network device as the root node. a data packet.
  • the device is used to execute the method of the aforementioned second aspect or any implementation manner of the second aspect.
  • the fifth aspect of the present application provides a communication device, including: a processor, a memory, and a communication interface, the processor is used to execute instructions stored in the memory, so that the communication device performs any one of the first aspect or the first aspect
  • the method provided by the communication interface is used to receive or send indications.
  • the sixth aspect of the present application provides a communication device, including: a processor, a memory, and a communication interface, the processor is used to execute instructions stored in the memory, so that the communication device performs any one of the above-mentioned second aspect or the second aspect
  • the method provided by the communication interface is used to receive or send indications.
  • the seventh aspect of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a program, and when the computer executes the program, it executes the above-mentioned first aspect or any optional method provided by the first aspect. method.
  • the eighth aspect of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a program, and when the computer executes the program, it executes the above-mentioned second aspect or any optional method provided by the second aspect. method.
  • a ninth aspect of the present application provides a computer program product.
  • the computer program product When the computer program product is executed on a computer, the computer executes the method provided in the foregoing first aspect or any optional manner of the first aspect.
  • the tenth aspect of the present application provides a computer program product.
  • the computer program product When the computer program product is executed on a computer, the computer executes the method provided in the aforementioned second aspect or any optional manner of the second aspect.
  • Fig. 1 is the message sending schematic diagram of the unicast mode and the multicast mode that the embodiment of the present application provides;
  • FIG. 2 is a schematic structural diagram of a multicast tree provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an embodiment of a message transmission method provided by an embodiment of the present application.
  • FIG. 4 is a message transmission scenario provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a P2MP multicast provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a SID extension application provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a message transmission device provided by an embodiment of the present application.
  • FIG. 8 is another structural schematic diagram of a device for message transmission provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another structure of a communication device provided by an embodiment of the present application.
  • the embodiment of the present application provides a message transmission method and device, which are used to meet the multicast requirement of SRv6 service data that does not support unicast.
  • Segment Routing It is a protocol designed based on the concept of source routing to forward data packets in the network. SR divides the network path into segments, and assigns segment identifiers (Segment ID, SID) to these segments and network nodes. By arranging the SIDs in an orderly manner, the SID list (SID List, also known in SR-MPLS) can be obtained. Called label stack), SID List can indicate a forwarding path. Through SR technology, you can specify the node and path through which the data packet carrying the SID List passes, so as to meet the requirements of traffic optimization. To make an analogy, the data packet can be compared to the luggage, and the SR can be compared to the label on the luggage.
  • SID Segment ID
  • the luggage can be sent to area A at the origin Affix a label "first to area B, then to area C, and finally to area D", so that each area only needs to identify the label on the luggage, and forward the luggage from one area to another area according to the label of the luggage.
  • the source node will add a label to the data packet, and the intermediate node can forward it to the next node according to the label until the data packet reaches the destination node.
  • the data packet will first be forwarded to the node corresponding to SID1, then to the node corresponding to SID2, and then to the node corresponding to SID3.
  • the full name of SR-MPLS in Chinese and English is Segment Routing Multi-Protocol Label Switching (Segment Routing Multi-Protocol Label Switching).
  • Segment routing based on Internet Protocol Version 6 (IPv6): refers to the application of SR technology in IPv6 networks. Use IPv6 address (128bits) as the representation of SID.
  • IPv6 address (128bits) as the representation of SID.
  • the network device supporting SRv6 will query the local SID table (local SID table) according to the destination address (Destination Address, DA) in the data packet.
  • DA Destination Address
  • any SID of any SID matches the longest, then according to the strategy related to the SID in the local segment identification table, perform the operation corresponding to the strategy, for example, the data packet can be forwarded from the outgoing interface corresponding to the SID); if the purpose of the data packet The address does not have the longest match with each SID in the local segment identification table, then check the IPv6 forwarding table again, and perform longest matching forwarding according to the IPv6 forwarding table.
  • Different nodes in the SRv6 network can be connected through Internet protocol (internet protocol, IP) address layer links.
  • IP Internet protocol
  • the node can publish at least one endpoint three-layer cross-connect segment identifier (End.X SID, End means endpoint, meaning endpoint; X means crossing, meaning three-layer cross-connect, SID means segment identifier ), each End.X SID is used to identify an IP layer link directly connected to the node, and other nodes in the network can determine the corresponding IP layer link of each IP layer link in the network by sending and receiving End. SID.
  • the head node When a data packet enters the SRv6 network, the head node will receive the data packet, and after determining the forwarding path of the data packet, in a possible implementation, the head node can obtain each The End.X SID corresponding to the IP layer link, write the obtained End.X SID into the data packet, and then send the data packet carrying the End.X SID to the next node.
  • the node When any node receives a data packet, the node will parse the data packet, get the End.X SID carried by the data packet, and send the data packet from the IP layer outgoing interface bound to the End.X SID, then the data packet will pass through The IP layer link corresponding to the IP layer outgoing interface reaches the next node, and the next node will continue to forward the data packet by performing similar steps until the data packet reaches the destination node.
  • the head node can obtain the endpoint segment identifier corresponding to each node (End SID, End means endpoint, which means endpoint, and SID means segment identifier) according to each node that the forwarding path needs to pass through.
  • IPv6 packet is composed of IPv6 standard header + extension header (0...n) + payload Payload.
  • SRH extension header a new IPv6 extension header is added, called the SRH extension header.
  • This extension header specifies an IPv6 explicit path and stores IPv6 Segment List information. Its function is the same as that of Segment in SR MPLS. List same.
  • the head node adds an SRH extension header to the IPv6 message, and the intermediate node can forward it according to the path information contained in the SRH extension header.
  • Binding SID (Binding SID, BSID): BSID will be bound to a SID list. When a node obtains a legal BSID, it will perform BSID-related operations. In SR-MPLS, BSID-related operations can be: pop the BSID and push it into the corresponding SID List. In SRv6, BSID-related operations can be: insert a new SRH header (End.B6.Insert), or insert a new outer IPv6 header containing SRH (End.B6.Encaps ).
  • Head Node The starting node of the SR forwarding path, responsible for encapsulating segment identification.
  • bit string (BitString) in the BIER message is used to instruct the network device to copy the multicast message to the designated receiver.
  • the BIER message encapsulates the BIER header and carries the BitString in it, and each bit in the BitString represents a receiver.
  • the intermediate node does not perceive the status of the multicast group, and only completes the copying and forwarding of the message according to the BitString.
  • a network domain that supports BIER forwarding is called a BIER domain.
  • the BIER domain can be divided into multiple sub-domains. Each BIER domain contains at least one subdomain.
  • a router supporting the BIER forwarding capability in a domain is called a bit forwarding router (BFR).
  • BFR bit forwarding router
  • BFIR bit forwarding ingress router
  • BFER bit forwarding egress router
  • BFIR and BFER also have a common name - edge BFR, which is also the source node or destination node in the BIER domain.
  • the edge BFR has a dedicated BIER forwarding router identifier (BIER forwarding router identifier, BFR-ID), represented by an integer ranging from 1 to 65535. For example, if there are 256 edge nodes in a network, each edge node needs to be configured with a unique value from 1 to 256, and the destination node set is represented by a 256-bit (or 32-byte) BitString, where each Bit in the BitString The position or index of represents an edge node.
  • BIER forwarding router identifier BFR-ID
  • BIERv6 Bit Index Explicit Replication IPv6 encapsulation
  • multicast also known as multicast
  • data can be sent to a group of users along a specific path, and there is at most one copy of the same multicast data on each link.
  • IPTV interactive network television
  • the content of the message sent by the server to different users is the same, please refer to Fig. 1, as shown in Fig. Schematic diagram of message sending in unicast mode and multicast mode.
  • the server In unicast mode, the server needs to copy the message for different users and send them to the corresponding users respectively; while in multicast mode, the server only needs to add multiple
  • the downstream routing device of the broadcast group sends a message, and then the routers at all levels replicate the message at a device granularity, and then send it to the corresponding user. Therefore, for the upstream network above the access point, the multicast mode can significantly reduce the pressure of message duplication and the waste of bandwidth.
  • FIG. 2 is a schematic structural diagram of a multicast tree provided by an embodiment of the present application.
  • a multicast tree may include a root node, intermediate nodes and leaf nodes. Intermediate nodes may refer to nodes other than edge nodes, such as nodes B and C in FIG. 2 . Edge nodes may include root nodes and leaf nodes.
  • Node A is the root node.
  • Node D, node E and node F are leaf nodes.
  • the transmission path between node E and node C can replace the transmission path between node B and node C in FIG. 2 to generate another multicast tree.
  • the node E which is a leaf node also serves as an intermediate node
  • the node E is called a mixed (bud) node.
  • the structure of the multicast tree shown in FIG. 2 is only exemplary, and does not limit this application.
  • the forwarding process of the multicast data message includes: the root node of the multicast tree receives the multicast data message sent by the multicast source, and the root node sends the multicast data message to the leaf nodes of the multicast tree.
  • the root node forwards the multicast data packet to the downstream nodes.
  • the downstream node of a certain node refers to the next hop node of the certain node on the transmission path along the direction from the root node to the leaf node in the multicast tree. If the downstream node of the root node is an intermediate node, the intermediate node sends the multicast data packet to the leaf node of the multicast tree through its downstream node.
  • the leaf node After receiving the multicast data message, the leaf node sends it to the host connected to the local port through the local port. If there is a bud node in the multicast tree, in addition to sending the multicast data message to its downstream nodes, the bud node will also send the copied multicast data message through a local port.
  • node A sends a multicast data message from a multicast source to its downstream node B.
  • Node B copies the multicast data message, and sends the multicast data message to its downstream nodes E and C respectively.
  • Node C copies the multicast data message, and sends the multicast data message to its downstream nodes F and D respectively.
  • Node F and node D can respectively send the multicast data message through their respective local ports.
  • the node E When the node E is a bud node, the node E can copy the multicast data message, and send a multicast data message through its local port and the port capable of communicating with the downstream node C respectively.
  • the BSID defined by the SR is bound to an SR policy, which is instantiated as a list of SIDs on the specified node. If the current segment of any received message is a BSID, the message is bound to an SR policy (Policy). Taking the endpoint bound to an SRv6 policy (End.B6.Insert) SID defined in RFC8986 as an example, a Segment Routing Header (SRH) extended message is inserted after the IPv6 packet header Header (including the corresponding segment list (Segment List)), and set the destination address as the first SID of SRv6Policy, in addition to setting each field of the outer IPv6 packet header, and finally check the new IPv6 packet Table forwarding.
  • SRv6 policy End.B6.Insert
  • SRH Segment Routing Header
  • the currently defined SR Policy for BSID binding is a unicast path and cannot be used in a multicast scenario.
  • the embodiment of the present application provides a message transmission method, the method is as follows.
  • an embodiment of a message transmission method as shown in Fig. 3 includes:
  • the multicast source sends a multicast packet to the second network device.
  • the point-to-point communication between the source host and the destination host is unicast. If you want to send information to multiple hosts but not all hosts, if you implement it in unicast mode, repeated IP packets will not only occupy a large amount of bandwidth, but also increase the load on the source host.
  • Multicast refers to sending data packets to a certain set of nodes (ie, multicast group) in an IP network.
  • broadcast group address all receivers in the multicast group can receive the same data copy, and only the hosts in the multicast group can receive the data, while other hosts cannot receive the data.
  • the multicast in the embodiment of this application The group takes a multicast tree as an example.
  • the data packet that the multicast source (multicast source) of the embodiment of the present application wants to transmit to the multicast tree needs to pass through the SR domain, and the SR domain can be a unicast domain or a multicast domain, wherein the SR domain can be an SRv6 domain, for the SRv6 domain
  • the SR policy bound to the BSID in ip is only a unicast path, and the data packets from the multicast source need to pass through the unicast domain and then to the multicast domain.
  • This embodiment takes a message from unicast to multicast as an example. Please refer to FIG.
  • the head node Ingress Node
  • the multicast instantiation node Multicast Initiation Node
  • the multicast leaf node (Leaf Node)
  • the number of nodes between the head node and the multicast instantiation node is not limited, and the number of intermediate nodes and the number of layers between the multicast instantiation node and the multicast leaf node are not limited either.
  • the first network device is a multicast instantiation node
  • the second network device is a head node.
  • the multicast source can transmit the multicast packets intended to be transmitted to the multicast leaf nodes to the head node, and the head node transmits the multicast packets to the multicast leaf nodes.
  • the multicast message also includes multicast source group information indicating the multicast leaf node.
  • the second network device acquires the first data packet based on the multicast packet.
  • the head node after the head node receives the multicast message, it can obtain the above-mentioned multicast source group information, and determine a multicast binding segment identifier (Multicast BSID) according to the multicast leaf node indicated by the multicast source group information .
  • the head node may encapsulate the multicast binding segment identifier into the multicast packet to form the first data packet.
  • a multicast packet enters an SRv6 domain
  • the head node encapsulates the packet with an SRv6 extension header and converts it into an SRv6 packet.
  • the SRv6 packet header includes an IPv6 header and an SRv6 extension header.
  • the source address (SA) field in the IPv6 header is set to a routable IPv6 unicast address.
  • the destination address (DA) field in the IPv6 header is set to the address of the next-hop node.
  • the multiple SIDs included in the SRH in the SRv6 extension header can indicate the transmission path of the first data packet, wherein the last SID in the SRH is a multicast binding segment identifier, and the multicast binding segment identifier is the same as the multicast source
  • the multicast leaf nodes that want to transmit have an association relationship.
  • the format of the first data packet may refer to Table 1 below.
  • the second network device sends the first data packet to the first network device serving as the root node.
  • the head node after the head node obtains the above-mentioned first data message, it can transmit the first data message according to the address of the next-hop node in the IPv6 header. Specifically, the head node and the multicast instance There can be multiple nodes between the instantiation nodes, and the nodes between the head node and the multicast instantiation node only do the forwarding work until the first data packet is sent to the multicast instantiation indicated by the last SID in the SRH node.
  • the first network device obtains the second data packet according to the Multicast BSID.
  • the multicast instantiation node after the multicast instantiation node receives the above-mentioned first data message, it can obtain the multicast binding segment identifier in the first data message, and then determine the multicast binding segment identifier according to the multicast binding segment identifier.
  • the parameter set corresponding to the fixed segment identifier can insert a multicast encapsulation header (Multicast Encap) in the first data message according to the multicast binding segment identifier.
  • the multicast encapsulation header includes the parameter set, and the parameter set can indicate Send the second data packet to a network device serving as a leaf node.
  • the format of the second data packet may refer to Table 2 below.
  • the manner in which the first network device obtains the second data message according to the multicast binding segment identifier may be that the first network device obtains the parameter set according to the Multicast BSID and the first correspondence; the first network device obtains the parameter set based on the first The data packet and the parameter set are used to obtain the second data packet.
  • the multicast instantiation node may store a first correspondence, where the first correspondence includes the multicast binding segment identifier and the parameter set, and the multicast binding segment identifier and the parameter set correspond one-to-one. That is, after the multicast instantiation node obtains the identifier of the multicast binding segment, it can match the corresponding parameter set from the first correspondence, and then encapsulate the parameter set into the Multicast Encap layer header of the second message.
  • the first corresponding relationship may be shown in Table 3 below.
  • the multicast binding segment identifier includes M-BSID-A, M-BSID-B, and M-BSID-C
  • the parameter set includes parameter set A, parameter set B, and parameter set C
  • M-BSID-A corresponds to the parameter set A
  • M-BSID-B corresponds to parameter set B
  • M-BSID-C corresponds to parameter set C
  • Multicast binding segment identifier parameter set M-BSID-A Parameter set A M-BSID-B Parameter set B M-BSID-C Parameter set C
  • the first network device determines the parameter set according to the multicast tree to which the network device serving as the leaf node belongs; the first network device obtains the first corresponding relationship according to the parameter set, and the first network device may also obtain the second corresponding relationship according to the first corresponding relationship.
  • the network device as a leaf node can report the multicast tree to which the network device belongs to the multicast instantiation node, and then the multicast instantiation node can determine the parameters included in the multicast tree according to the established or updated multicast tree set, and then configure a multicast binding segment identifier for each multicast tree parameter set, and store it in the first correspondence.
  • the multicast instantiation node may also determine a second corresponding relationship according to the identifier of the multicast tree to which the parameter set belongs, and the second corresponding relationship includes the multicast binding segment identifier and the associated relationship between the identifiers.
  • the second correspondence can be referred to as shown in Table 4 below.
  • the multicast binding segment identification includes M-BSID-A, M-BSID-B and M-BSID-C, and the identification includes multicast tree A (M-TREE-A) , Multicast tree B (M-TREE-B) and multicast tree C (M-TREE-C), wherein, M-BSID-A corresponds to M-TREE-A, and M-BSID-B corresponds to M-TREE- B, M-BSID-C corresponds to M-TREE-C.
  • M-TREE-A multicast tree A
  • M-TREE-B Multicast tree B
  • M-TREE-C multicast tree C
  • Multicast binding segment identifier logo M-BSID-A M-TREE-A M-BSID-B M-TREE-B M-BSID-C M-TREE-C
  • the first network device may also send the second correspondence to the head node. Then when the head node receives the multicast message, it can determine the multicast binding segment identifier according to the multicast tree identifier included in the multicast source group information in the multicast message, and identify the encapsulation group according to the multicast binding segment broadcast the message to generate the first data message.
  • the manner in which the first network device obtains the second data packet according to the multicast binding segment identifier may also be that the first network device obtains the identifier according to the Multicast BSID and the first correspondence; the first network device obtains the identifier according to the identifier and The second correspondence is to obtain a parameter set; the first network device obtains a second data packet based on the first data packet and the parameter set.
  • the multicast instantiation node may store a first corresponding relationship and a second corresponding relationship, wherein the first corresponding relationship includes the above-mentioned multicast binding segment identification and identification, and the multicast binding segment identification corresponds to the identification one by one.
  • the identifier may indicate the multicast tree to which the network device serving as a leaf node belongs. That is, after the multicast instantiation node obtains the identifier of the multicast binding segment, it can determine the multicast tree to which the message is to be transmitted.
  • the second corresponding relationship may include the above-mentioned identifier and the above-mentioned parameter set, and the above-mentioned identifier and the above-mentioned parameter set are in one-to-one correspondence.
  • the multicast instantiation node After the multicast instantiation node determines the multicast tree, it can match the corresponding parameter set in the second correspondence, so as to generate the above-mentioned second data message.
  • the first correspondence can be referred to as shown in Table 4 above, and the second correspondence can be referred to as shown in Table 5 below.
  • the identifier of the multicast tree includes multicast tree A (M-TREE-A), multicast tree B (M-TREE-B) and multicast tree C (M-TREE-C), and the parameter set includes parameter set A, parameter Set B and parameter set C, where M-BSID-A corresponds to M-TREE-A, M-BSID-B corresponds to M-TREE-B, M-BSID-C corresponds to M-TREE-C, and M-TREE -A corresponds to parameter set A, M-TREE-B corresponds to parameter set B, and M-TREE-C corresponds to parameter set C.
  • M-TREE-A corresponds to M-TREE-A
  • M-BSID-B corresponds to M-TREE-B
  • M-BSID-C corresponds to M-TREE-C
  • M-TREE -A corresponds to parameter set A
  • M-TREE-B corresponds to parameter set B
  • M-TREE-C corresponds to parameter set C.
  • the first network device determines the parameter set according to the multicast tree to which the network device serving as the leaf node belongs; the first network device obtains the second correspondence according to the parameter set; the first network device obtains the second correspondence according to the identifier in the second correspondence first correspondence.
  • the network device as a leaf node can report the multicast tree to which the network device belongs to the multicast instantiation node, then each multicast tree can be assigned an identifier to distinguish, and the multicast instantiation node can The multicast tree determines the parameter set included in the multicast tree, and then each identifier corresponds to a parameter set, and the association relationship can be stored in the first correspondence, and then the multicast instantiation node can be configured for each multicast tree identifier A multicast binding segment identifier is stored in the second correspondence.
  • the first network device may also send the first correspondence to the head node. The head node does not need to perceive the parameter set, so it only needs not to receive the second corresponding relationship.
  • the head node When the head node receives the multicast packet, it can use the multicast tree identifier included in the multicast source group information in the multicast packet and the The first correspondence between the multicast instantiation nodes determines the identifier of the multicast binding segment, and then encapsulates the multicast message according to the identifier of the multicast binding segment to generate the first data message.
  • the first network device sends the second data packet to a network device serving as a leaf node.
  • the multicast instantiation node after the multicast instantiation node encapsulates the first data message to generate the second data message, it can transmit the message to the network as the leaf node indicated by the parameter set according to the message transmission mode of the multicast tree.
  • the device sends the second data packet.
  • the above parameter set may include a bit string; or, the above parameter set may include a SID list.
  • the above-mentioned multicast tree is a BIERv6 multicast tree
  • the packet transmission domain it is in is the BIERv6 domain
  • the bits set in the bit string correspond to the network devices serving as leaf nodes.
  • a BIERv6 multicast tree includes 4 leaf nodes A, B, C and D.
  • the bit string corresponding to the parameter set may be expressed as 0001.
  • the bit string corresponding to the parameter set may be expressed as 0010.
  • node C is an edge node receiving the second data packet
  • the bit string corresponding to the parameter set may be expressed as 0100.
  • bit string corresponding to the parameter set When node D is an edge node receiving the second data message, the bit string corresponding to the parameter set may be expressed as 1000. When Node B and Node D are data nodes receiving the second data packet, the bit string corresponding to the parameter set may be represented as 1010 .
  • nodes A, B, C and D announce their respective bit positions to their respective upstream nodes through the tree building protocol.
  • the upstream node of a certain node is the last hop node of the certain node on the transmission path in the direction from the root node of the multicast tree to the leaf node.
  • the multicast instantiation node After the multicast instantiation node receives the notifications from the nodes A, B, C and D, it obtains and saves the bit positions of the nodes A, B, C and D. After the multicast instantiation node receives the first data message, it can determine that the second data message needs to be sent to nodes B and C according to the determined bit string in the parameter set being 0110. The multicast instantiation node obtains the BIER message according to the bit string and the first data message. The BIER packet includes a BIER header and the multicast data packet. The bit string included in the BIER header is 0110. The multicast instantiation node sends the BIER message to the next hop node (intermediate node).
  • the BIERv6 network defines a new type of SID, called End.BIER address, which is used as the IPv6 destination address to instruct the forwarding plane of the device to process the BIERv6 extension header in the packet.
  • End.BIER address a new type of SID
  • IPv6 destination address an IPv6 destination address to instruct the forwarding plane of the device to process the BIERv6 extension header in the packet.
  • each node receives and processes a BIERv6 message, it encapsulates the End.BIER SID of the next-hop node as the outer layer IPv6 destination address of the BIERv6 message (the destination node of the first data message has been defined by a bit string), so that the next One-hop nodes forward packets according to the BIERv6 process.
  • the multicast instantiation node When the first data message enters the BIERv6 domain, the multicast instantiation node encapsulates the message with the BIERv6 extension header and converts it into a BIERv6 message, and then the Multicast Encap is the BIERv6 message header.
  • the BIERv6 packet header includes an IPv6 header and a BIERv6 extension header.
  • the intermediate node BFR After receiving the BIERv6 message, the intermediate node BFR will process the data packet according to the general process of IPv6 message processing. First, process the IPv6 header.
  • IPv6 destination address is the End.BIER IPv6 unicast address of this BFR
  • instruct the network device to process the message according to the BIERv6 forwarding process, and read the BIERv6 extension header in the second data message corresponding fields of the .
  • the BFR copies the message to the next BFR node.
  • a network device serving as a leaf node When a network device serving as a leaf node receives a multicast message, if the bit corresponding to the node's BFR-ID in the bit string of the message is set, the IPv6 encapsulation is stripped and the BFIR-ID information in the BIERv6 header is taken out Determine which root node the traffic comes from, and further determine which virtual private network (virtual private network, VPN) the message belongs to through the source address of the message, so as to search the private network routing table in the corresponding VPN and continue to forward the message.
  • VPN virtual private network
  • the above-mentioned multicast tree is a point-to-multipoint (point-to-multipoint, P2MP) multicast tree
  • the message transmission domain where it is located is the SR P2MP domain
  • the SID list includes instructions as leaf
  • the information of the network device of the node which can be SID or bit string.
  • the network device as a leaf node joins the multicast tree following the multicast joining mechanism defined by SRv6P2MP
  • the above-mentioned Multicast Encap is a P2MP packet header.
  • the SID in the SRH can be extended to define the number of forks (number of branches, N-Branches) and the number of segment identifiers in the subtree (number of SIDs in sub tree, N-SIDs) two fields, which can locate the SID of the next fork node and the SID of the corresponding subtree; after the intermediate node receives the second data message, it only keeps the SID of the fork node after copying the message and the SID of the corresponding subtree, and the SIDs of other subtrees will be removed from the segment list of the SRH.
  • the P2MP multicast tree includes: head node R-M, intermediate nodes P1-M, P2-M, P3-M, P4-M, and leaf nodes L1-M, L2-M, L3-M, L4-M, wherein, the multicast tree includes 4 links, and the message output by R-M is transmitted to L1-M; the message output by R-M is transmitted to L2-M through P1-M and P2-M; the message output by R-M is transmitted to L3-M through P1-M, P3-M and P4-M; the message output by R-M The text is transmitted to L4-M through P1-M, P3-M and P4-M.
  • the Multicast Node SID Locator can identify the location of the node, and the Multicast Node SID Block is used as a prefix. Combined with the Node-X-ID to form the above Multicast Node SID Block .
  • the SID in the SRH can be extended, and a pointer (Pointer) field can be added to each SID, so that the nodes in the path can be divided according to levels, and the specified The next-level node that the node is associated with.
  • the multicast tree is divided into levels according to the replication relationship, and all nodes in the multicast tree are encoded in the message in the form of levels, and the levels are arranged from low to high, and nodes at the same level are coded in Together, messages with the same parent node are encoded together.
  • each parent node points to the position of the child node in the SRH after copying.
  • the Locator (used for the route to the parent node) remains unchanged;
  • Function is extended to Hierarchical, which is used for Indicates new multicast/multipath-related functions, such as: replication, deletion of redundant packets, load balancing, active/standby protection, etc.
  • Argument is extended to Pointer: it is used to indicate the position of the next child node in SRH after the parent node is copied;
  • Pointer includes Pointer1 and Pointer2, and there are two encoding forms, 1) Pointer1 indicates the initial segment left (SL) of the child node Value and Pointer2 indicate the offset value; 2) Pointer1 indicates the initial segment left value of the child node and Pointer2 indicates the end Segment left value.
  • the extension format of the extension of the SID can refer to Table 7 below.
  • FIG. 6 is a schematic diagram of the SID extension application provided by the present application.
  • the head node of the multicast tree is A
  • the current P2MP explicit path has problems such as dependence on the controller and low coding efficiency.
  • the SRH/RH is extended to define a new Segment type and corresponding Function for more efficient P2MP encoding.
  • Bitstring Segment includes two parts: Pointer and Bitstring, where: Pointer: the segment start position corresponding to the child node; Bitstring: used to carry the adjacent link for forwarding after copying the instruction message (Adjacency).
  • Pointer the segment start position corresponding to the child node
  • Bitstring used to carry the adjacent link for forwarding after copying the instruction message (Adjacency).
  • the message transmission in this embodiment of the application can also be from a multicast domain to a multicast domain, specifically, it can be a transmission from a branch to a subtree in a multicast tree, or it can be a transmission between different multicast trees.
  • the embodiment takes the transmission from a branch to a subtree in a multicast tree as an example. As an example, taking FIG.
  • the multicast tree with P1-M as the root node also includes a multicast tree with P2-M as the root node
  • the subtree and the subtree with P4-M as the root node, taking the subtree with P4-M as the root node as an example, the first network device of the present application can be node P4-M, and the second network device can be P3- M, network devices serving as leaf nodes may be L3-M and L4-M.
  • the node P4-M stores the corresponding relationship (the first corresponding relationship and/or the second corresponding relationship) including the parameter sets indicating L3-M and L4-M, and the node P4-M receives the first corresponding relationship from the node P3-M After a data message, the parameter set is encapsulated into the first data message according to the above corresponding relationship to generate a second data message, and the second data message is transmitted according to the parameter set.
  • FIG. 7 is a schematic diagram of an embodiment of a device 70 in the embodiment of the present application.
  • Apparatus 70 may be set on a network device serving as a root node, such as the first network device mentioned in the embodiment of the present application.
  • the embodiment of the present application provides a device for message transmission, which includes:
  • the receiving unit 701 is configured to receive a first data message from a second network device, where the first data message includes a multicast binding segment identifier Multicast BSID;
  • the obtaining unit 702 is configured to obtain a second data message according to the Multicast BSID, the second data message includes a parameter set, and the parameter set is used to indicate to send the second data message to a network device serving as a leaf node;
  • a sending unit 703, configured to send a second data packet to a network device serving as a leaf node.
  • the obtaining unit 702 is specifically configured to: obtain a parameter set according to the Multicast BSID and the first corresponding relationship, the first corresponding relationship includes the Multicast BSID and the parameter set; obtain the second datagram based on the first data message and the parameter set arts.
  • the obtaining unit 702 is specifically configured to: obtain an identifier according to the Multicast BSID and the first correspondence, the identifier is used to identify the multicast tree to which the network device as the leaf node belongs, and the first correspondence includes the Multicast BSID and the identifier; The identifier and the second corresponding relationship are used to obtain a parameter set, and the second corresponding relationship includes the identifier and the parameter set; based on the first data message and the parameter set, the second data message is obtained.
  • the parameter set includes a bit string, and the set bit in the bit string corresponds to a network device serving as a leaf node; or, the parameter set includes a SID list, and the SID list includes information indicating a network device serving as a leaf node.
  • the obtaining unit 702 is further configured to: determine the parameter set according to the multicast tree to which the network device serving as the leaf node belongs; obtain the first correspondence according to the parameter set; obtain the second correspondence according to the first correspondence, and the second correspondence
  • the relationship includes Multicast BSID and ID, which is used to identify the multicast tree to which the parameter set belongs.
  • the sending unit 703 is further configured to send the second correspondence to the second network device.
  • the acquiring unit 702 is further configured to: determine the parameter set according to the multicast tree to which the network device serving as the leaf node belongs; acquire the second corresponding relationship according to the parameter set; acquire the first corresponding relationship according to the identifier in the second corresponding relationship.
  • the sending unit 703 is further configured to send the first correspondence to the second network device.
  • FIG. 8 is a schematic diagram of another embodiment of a device 80 in the embodiment of the present application.
  • the apparatus 80 may be set on a network device serving as an intermediate forwarding node, such as a second network device.
  • a device for message transmission which includes:
  • a receiving unit 801 configured to receive a multicast message from a multicast source, where the multicast message includes group information of the multicast source;
  • An acquisition unit 802 configured to acquire a first data message based on a multicast message, where the first data message includes a multicast binding segment identifier Multicast BSID corresponding to the multicast source group information;
  • the sending unit 803 is configured to send the first data packet to the first network device serving as the root node.
  • the receiving unit 801 is further configured to: receive a first correspondence from the first network device, the first correspondence includes a Multicast BSID and an identifier, the identifier is used to identify the group to which the network device serving as a leaf node belongs broadcast tree, the multicast source group information includes identification.
  • the receiving unit 801 is further configured to: receive a first correspondence and a second correspondence from the first network device, the first correspondence includes a Multicast BSID and an identifier, and the identifier is used to identify the network device to which the leaf node belongs.
  • the multicast source group information includes identification.
  • FIG. 9 is a schematic diagram of a possible logical structure of a communication device 90 provided by an embodiment of the present application.
  • the communication device 90 includes: a processor 901 , a communication interface 902 , a storage system 903 and a bus 904 .
  • the processor 901 , the communication interface 902 and the storage system 903 are connected to each other through a bus 904 .
  • the processor 901 is used to control and manage the actions of the communication device 90, for example, the processor 901 is used to execute the steps performed by the first network device in the method embodiment in FIG. 3 .
  • the communication interface 902 is used to support the communication device 90 to communicate.
  • the storage system 903 is used for storing program codes and data of the communication device 90.
  • the processor 901 may be a central processing unit, a general processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor 901 may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the bus 904 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus or the like.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the receiving unit 701 and the sending unit 703 in the device 70 are equivalent to the communication interface 902 in the communication device 90 , and the acquisition unit 702 in the device 70 is equivalent to the processor 901 in the communication device 90 .
  • the communication device 90 in this embodiment may correspond to the first network device in the method embodiment in FIG. 3 above, and the communication interface 902 in the communication device 90 may implement the functions of the first network device in the method embodiment in FIG. 3 above. And/or various steps implemented, for the sake of brevity, details are not repeated here.
  • FIG. 10 is a schematic diagram of a possible logical structure of a communication device 100 provided by an embodiment of the present application.
  • the communication device 100 includes: a processor 1001 , a communication interface 1002 , a storage system 1003 and a bus 1004 .
  • the processor 1001 , the communication interface 1002 and the storage system 1003 are connected to each other through a bus 1004 .
  • the processor 1001 is configured to control and manage actions of the communication device 100, for example, the processor 1001 is configured to execute the steps executed by the second network device in the method embodiment in FIG. 3 .
  • the communication interface 1002 is used to support the communication device 100 to perform communication.
  • the storage system 1003 is used for storing program codes and data of the communication device 100 .
  • the processor 1001 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor 1001 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like.
  • the bus 1004 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus, etc.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the receiving unit 801 and the sending unit 803 in the apparatus 80 are equivalent to the communication interface 1002 in the communication device 100 , and the obtaining unit 802 in the apparatus 80 is equivalent to the processor 1001 in the communication device 100 .
  • the communication device 100 in this embodiment may correspond to the second network device in the method embodiment in FIG. 3 above, and the communication interface 1002 in the communication device 100 may implement the functions of the second network device in the method embodiment in FIG. 3 above. And/or various steps implemented, for the sake of brevity, details are not repeated here.
  • a computer-readable storage medium is also provided, and computer-executable instructions are stored in the computer-readable storage medium.
  • the processor of the device executes the computer-executable instructions
  • the device executes the above-mentioned steps in Figure 3. Steps of the packet transmission method performed by the first network device.
  • a computer-readable storage medium is also provided, and computer-executable instructions are stored in the computer-readable storage medium.
  • the processor of the device executes the computer-executable instructions
  • the device executes the above-mentioned steps in Figure 3. Steps of the packet transmission method performed by the second network device.
  • a computer program product includes computer-executable instructions stored in a computer-readable storage medium; when the processor of the device executes the computer-executable instructions , the device executes the steps of the packet transmission method executed by the first network device in FIG. 3 above.
  • a computer program product includes computer-executable instructions stored in a computer-readable storage medium; when the processor of the device executes the computer-executable instructions , the device executes the steps of the packet transmission method executed by the second network device in FIG. 3 above.
  • the disclosed system, device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), magnetic disk or optical disc, etc., which can store program codes. .

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Abstract

Sont décrits dans les modes de réalisation de la présente invention un procédé et un appareil de transmission de paquets qui satisfont aux exigences de multidiffusion de données de service SRv6 ne prenant pas en charge une diffusion individuelle. Le procédé dans les modes de réalisation de la présente invention comprend les étapes suivantes : un premier dispositif réseau obtient un premier paquet de données provenant d'un second dispositif réseau, le premier paquet de données comprenant un identifiant de segment de liaison de multidiffusion, l'identifiant de segment de liaison de multidiffusion pouvant être mis en correspondance avec un ensemble de paramètres, et l'ensemble de paramètres pouvant indiquer un noeud feuille dans un arbre de multidiffusion ; et le premier dispositif de réseau encapsule l'ensemble de paramètres dans le premier paquet de données pour former un second paquet de données.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116723144A (zh) * 2023-08-10 2023-09-08 北京邮电大学 组播业务数据传输方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101729274A (zh) * 2009-06-18 2010-06-09 中兴通讯股份有限公司 Pbb_vpls网络中实现组播的方法
WO2012067367A2 (fr) * 2010-11-18 2012-05-24 Samsung Electronics Co., Ltd. Appareil et procédé permettant d'allouer de façon dynamique un trajet de multidiffusion dans un système d'accès sans fil à large bande
CN109039902A (zh) * 2018-07-24 2018-12-18 新华三技术有限公司 一种组播报文的转发方法及装置
CN110417657A (zh) * 2018-04-27 2019-11-05 华为技术有限公司 一种处理组播数据报文的方法及装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111181855B (zh) * 2018-11-13 2021-06-04 北京华为数字技术有限公司 一种组播的方法及路由设备
US11012350B2 (en) * 2019-07-16 2021-05-18 Cisco Technology, Inc. Network interworking with no cross-domain state
CN112134801B (zh) * 2020-08-11 2022-02-15 中盈优创资讯科技有限公司 分段标识sid的处理方法、装置及各节点

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101729274A (zh) * 2009-06-18 2010-06-09 中兴通讯股份有限公司 Pbb_vpls网络中实现组播的方法
WO2012067367A2 (fr) * 2010-11-18 2012-05-24 Samsung Electronics Co., Ltd. Appareil et procédé permettant d'allouer de façon dynamique un trajet de multidiffusion dans un système d'accès sans fil à large bande
CN110417657A (zh) * 2018-04-27 2019-11-05 华为技术有限公司 一种处理组播数据报文的方法及装置
CN109039902A (zh) * 2018-07-24 2018-12-18 新华三技术有限公司 一种组播报文的转发方法及装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116723144A (zh) * 2023-08-10 2023-09-08 北京邮电大学 组播业务数据传输方法及装置
CN116723144B (zh) * 2023-08-10 2024-01-05 北京邮电大学 组播业务数据传输方法及装置

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