CN101667968A - IPv6 message forwarding method, equipment and system - Google Patents
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Abstract
The invention discloses an IPv6 message forwarding method, equipment and a system, relating to the internet technical field, which can realize IPv6 message forwarding based on a single IPv4 network, thus significantly reducing the complexity of network evolution and the difficulty of network maintenance and having good network performance. The embodiment of the invention provides an IPv6 message forwarding method which comprises that an IPv6 prefix is searched according to the prefix of the IPv6 message, and next hop information is obtained according to the correspondence of the next hop information on a backbone network of an IPv4 network, wherein, the next hop information belongs to the IPv4 information; and the IPv6 message is forwarded on the backbone network according to the next hopinformation. The invention is applicable to the occasion of evolution from IPv4 to IPv6.
Description
Technical field
The present invention relates to Internet technical field, relate in particular to a kind of IPv6 message forwarding method, apparatus and system.
Background technology
(Internet Protocol Version 4 IPv4) has obtained using widely Internet protocol the 4th edition, becomes the foundation stone of Internet technology for a long time.Yet along with popularizing fast and the evolution trend of all-IP (ALLIP) network integration of the network terminal, existing problem also can not be ignored more among the IPv4.
For example, the increasing network equipment enters the Internet (Internet), need for its distributing IP address to communicate, can progressively exhaust the IP address that IPv4 can provide like this, cause the address scarcity.Statistics shows that the address distributed in IPv4 address pool in 2012 will be used up.The IPv6 of existing IPv4 has been considered to the core standard of Next Generation Internet as an alternative, and adopting the IPv6 address to solve the deficient problem in address is the unique feasible selection scheme of present industry.
Yet, IPv4 is still supporting the Internet well, complete upgrading needs very big cost to IPv6, and, because the IPv4 network equipment has adopted a lot of optimization and corrective measure, especially in backbone network, the process that issues to route agreement and route all has special measure, the two-way forwarding that for example is used for IPv4 detects (BFD) technology, and (Border Gateway Protocol, BGP) next jumped rule of detachment etc. to Border Gateway Protocol.But the improvement of these every aspects and optimization do not embody in the IPv6 network equipment at present.Because these improvement and optimization have comprised very many hardware and software development work, thereby in certain phase, the performance of IPv6 is difficult to reach the current performance of present IPv4.
A kind of method that carries out the transition to IPv6 from IPv4 that prior art provides is two stack schemes, and IPv6 is the network that is independent of IPv4 in this scheme, adopts the Routing Protocol formation IPv6 of IPv6 to transmit, to carry out the IPv6 message forwarding.
The another kind that prior art provides is the two stack schemes in edge from the method that IPv4 carries out the transition to IPv6, edge network adopts IPv4 and the two stacks of IPv6 in this scheme, core network adopts single stack, IPv6 uses tunnel style to pass through core network, and this tunnel can be multiprotocol label switching (mpls) tunnel or softwire tunnel.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
In two stack schemes, all routers all need to support simultaneously IPv4 and IPv6 in the network, have increased the complexity of network evolution greatly, and the difficulty of network operation, cause the reduction of network performance.For example, on the one hand, adjacent two bgp peers (PEER) need to set up and safeguard two BGP syntoples, and one is IPv4, and another is IPv6.On the other hand, the IGP agreement also needs to move respectively IPv4 and IPv6.
In the two stack schemes in edge, the edge service message must carry out MPLS encapsulation or softwire encapsulation, wherein, requires network support MPLS when carrying out the MPLS encapsulation, and many networks can not satisfy this function; And carry out softwire when encapsulation, because technology limitation, decreased performance is very serious.
Summary of the invention
For solving problems of the prior art, embodiments of the invention provide a kind of IPv6 message forwarding method, apparatus and system, can realize the IPv6 message forwarding based on independent IPv4 network, and low to network requirement, network performance is good.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The embodiment of the invention provides a kind of IPv6 message forwarding method, and described method comprises:
On the backbone network of IPv4 network, the corresponding relation of searching IPv6 prefix and next hop information with the prefix of IPv6 message obtains described next hop information, and wherein, described next hop information belongs to IPv4 information;
According to described next hop information described IPv6 message is transmitted on described backbone network.
The embodiment of the invention provides a kind of network equipment, and described equipment comprises:
Routing iinformation is known the unit, is used for the backbone network at the IPv4 network, and the corresponding relation of searching IPv6 prefix and next hop information with the prefix of IPv6 message obtains described next hop information, and wherein, described next hop information belongs to the IPv4 address;
Retransmission unit is used for knowing the next hop information that the unit obtains according to described routing iinformation, and described IPv6 message is transmitted on described backbone network.
The embodiment of the invention also provides a kind of communication system to comprise at least two above-mentioned network equipments.
The technical scheme that the embodiment of the invention provides, can on the backbone network of IPv4 network, realize the IPv6 message forwarding, because what have the deficient problem in address is great amount of terminals equipment in the edge network, and the network equipment limited amount in the backbone network, required IP address is also limited, as long as in the backbone network of IPv4 network, realized the IPv6 message forwarding, just can solve the deficient problem in address in the existing IPv4 network, realize of the successful transition of IPv4 network to the IPv6 network.
The technical scheme of the embodiment of the invention, low to network requirement, need not in network, to set up the tunnel, also need not to require to move simultaneously in the network IPv4 and IPv6 two cover route agreements, can be based on independent IPv4 network, realize the IPv6 message forwarding, significantly reduced the complexity of network evolution and the difficulty of network operation, network performance is better.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The IPv6 message forwarding method flow schematic diagram that Fig. 1 provides for the embodiment of the invention one;
The network architecture schematic diagram that Fig. 2 provides for the embodiment of the invention two;
The method flow schematic diagram of setting up IPv6 message forwarding routing table that Fig. 3 provides for the embodiment of the invention two;
The network equipment structural representation that Fig. 4 provides for the embodiment of the invention three.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Technical conceive of the present invention mainly is to make full use of effective combination of IPv4 control plane and IPv6 Forwarding plane in backbone network, on the backbone network router of the Interior Gateway Protocol of only having moved IPv4 (IGP), utilize the prefix of IPv6 message, search the IPv6 converting route of having safeguarded, realize the forwarding of IPv6 message in backbone network by " next jumps IPv6 prefix-IPv4 ".Utilize technical scheme of the present invention, can under newly-built IPv6BGP neighbours' the situation, not arrive IPv6 at the IGP Routing Protocol of not upgrading with IPv4 network simple transition, and make IPv6 reach the performance that IPv4 has reached fast, reduced cost consumption and the O﹠M input of IPv4 when the IPv6 transition.
The embodiment of the invention one provides a kind of IPv6 message forwarding method, and referring to shown in Figure 1, described method comprises:
Step 11: on the backbone network of IPv4 network, the corresponding relation of searching IPv6 prefix and next hop information with the prefix of IPv6 message obtains described next hop information, and wherein, described next hop information belongs to IPv4 information;
Step 12: described IPv6 message is transmitted on described backbone network according to described next hop information.
Wherein, described next hop information can comprise that next hop address, outgoing interface information and the link layer information of IPv4 and other carry out message required information when transmitting.
The technical scheme that the embodiment of the invention provides, can on the backbone network of IPv4 network, realize the IPv6 message forwarding, because what have the deficient problem in address is great amount of terminals equipment in the edge network, and the network equipment limited amount in the backbone network, required link address is also limited, as long as in the backbone network of IPv4 network, realized the IPv6 message forwarding, just can solve the deficient problem in address in the existing IPv4 network, realize of the successful transition of IPv4 network to the IPv6 network.
The technical scheme of the embodiment of the invention, low to network requirement, need not in network, to set up the tunnel, also need not to require to move simultaneously in the network IPv4 and IPv6 two cover route agreements, can be based on independent IPv4 network, realize the IPv6 message forwarding, significantly reduced the complexity of network evolution and the difficulty of network operation, network performance is better.
The IPv6 message forwarding method that the embodiment of the invention two is provided is elaborated below.
Referring to Fig. 2, exemplarily, shown a kind of network architecture, in this network architecture, comprise the IPv4 backbone network, in this backbone network, comprise aggregation router 1 (Aggregated Router, AR1), aggregation router 2 (AR2), core router 1 (Core Router, CR1), core router 2 (CR2) and Router Reflector (Router Reflector, RR).In a single autonomous system (AS), can be with wherein a router as Router Reflector, (Router Reflector RR) can reduce the quantity of bgp neighbor network element by introducing Router Reflector.Other router among the AS is connected as setting up Interior Border Gateway Protocol (IBGP) between client computer (Client) and the Router Reflector.Router Reflector transmits (reflection) routing iinformation between client computer, do not connect and do not need to set up BGP between the client computer.But be not limited to this, the embodiment of the invention is equally applicable to have the backbone network of other type network framework, and for example, the embodiment of the invention is equally applicable to not comprise the backbone network framework of Router Reflector.That mentions in the following description utilizes BGP that routing iinformation is announced to relevant bgp neighbor network element can be to utilize the BGP that directly sets up to connect to realize, also can be to realize by Router Reflector.
As shown in Figure 2, in this backbone network, require AR1, AR2, CR1, operation IPv4IGP agreement between CR2, the routing iinformation support of supporting bgp protocol to transmit IPv6 prefix-IPv4 next hop address is transmitted according to the message that the IPv6 prefix-the IPv4 next hop address is carried out.
Can in the IPv4 backbone network, set up IPv6 message forwarding routing table by the following method in the embodiment of the invention,, comprise the steps: referring to Fig. 3
Step 31: the border network element generates local IPv6 converting route.
In embodiments of the present invention, described IPv6 converting route comprises the corresponding relation of IPv6 prefix and next hop information, and described next hop information comprises next hop address, outgoing interface information and the link layer information of IPv4.Describe hereinafter in the generative process of converting route, mainly the corresponding relation with the next hop address that generates IPv6 prefix and IPv4 is that example describes, when those of ordinary skills can be informed in the next hop address of the IPv6 prefix that obtains and IPv4 by disclosed content, can access corresponding outgoing interface information and link layer information.
Utilize the IPv4 address of IPv6 prefix and border network element to generate new routing iinformation, utilize this new routing iinformation to generate the described IPv6 converting route of border network element.
Embodiment shown in Fig. 2, exemplary, border network element AR2 as the outlet network element, can be transmitted on backbone network from the IPv6 message of IPv6 network 1, be forwarded to IPv6 network 2 through AR2.Yet, as required also can be with the edge router (ASBR) of other AS in the backbone network as the outlet network element, for example, also can be with border network element AR1 as the outlet network element.
Because in the backbone network all is the IPv4 address, like this when receiving the IPv6 prefix at border network element place, Routing Protocol (normally bgp protocol), the IPv4 address of border network element as the next hop address in the routing iinformation of this IPv6 prefix correspondence, is formed BGP route " IPv6 prefix-IPv4 next hop address ".
In the embodiment shown in Figure 2, when AR2 receives the routing iinformation of external IP v6 network delivery, this routing iinformation comprises IPv6 prefix (following table is shown prefix Prefix6), AR2 is in conjunction with the router IPv4 address of self, generate new routing iinformation: " prefix Prefix6--next hop address is the IPv4 address of AR2 ", AR2 will this new routing iinformation as the IPv6 converting route of this locality, preserve and safeguard.
Then, neighbours' network element of border network element is as the bgp neighbor network element of AR2, this neighbours' network element comprises AR1, CR2, CR1, utilize above-mentioned new routing iinformation (being the IPv6 converting route of border network element) to obtain IPv6 converting route required when in backbone network, transmitting the IPV6 message, specifically comprise:
Step 32: described new routing iinformation is announced the extremely bgp neighbor network element of described border network element.
AR2 announces by BGP above-mentioned new routing iinformation " prefix Prefix6--next hop address is the IPv4 address of AR2 " in AS, utilize notification packet to inform the bgp neighbor AR1 that AR2 is all, CR2, CR1.
Step 33: each bgp neighbor network element of border network element generates local IPv6 converting route.
Utilize Interior Gateway Protocol IGP routing iinformation and described new routing iinformation, determine the local direct-connected next hop address of the pairing IPv6 prefix of above-mentioned each bgp neighbor network element, generate the local IPv6 converting route of each bgp neighbor network element.
Receive each bgp neighbor network element of described new routing iinformation among the AS, the routing iinformation of all " the direct-connected next hop address of IPv4 prefix-IPv4 " in BGP route " IPv6 prefix-IPv4 next hop address " and the local routing table is made comparisons, generate the routing table " the direct-connected next hop address of IPv6 prefix-IPv4 " that is used for the IPv6 forwarding.This process can be called the route iterative process.
In the embodiment shown in Figure 2, AR1, CR2, after CR1 receives the announcement routing iinformation, according to the prefix of IPv6 message, the routing iinformation in conjunction with local is generally the IGP routing iinformation, produce AR1, CR2, the local direct-connected next hop address of the pairing IPv6 message of CR1, generate the local IPv6 converting route of AR1, CR2, CR1.
Wherein, with CR1 is example, CR1 needs to search how to arrive AR2 in conjunction with local IGP routing iinformation, local IGP routing iinformation indication " prefix AR2--next hop address is the IPv4 address of CR2 " and corresponding outgoing interface information as CR1, CR1 is known by CR1 when AR2 sends the IPv6 message, should send to the nearer CR2 from AR2 earlier, then generate new IPv6 route: " prefix Prefix6--next hop address is the IPv4 address of CR2 " forms local IPv6 converting route.
In the present example, AR1, CR2 can adopt the method identical with above-mentioned CR1 according to announcement routing iinformation and local IGP routing iinformation, obtains AR1, the local direct-connected next hop address of the pairing IPv6 message of CR2.
Obtained IPv6 message forwarding routing table information by each bgp neighbor network element dynamic learning of above-mentioned steps, perhaps, also can be in advance the static described IPv6 converting route of configuration so that comprise the corresponding relation of IPv6 prefix and described next hop address in the IPv6 converting route that related network elements is safeguarded.The IPv6 converting route of safeguarding in each bgp neighbor network element can be expressed as follows:
Table 1
| IPv6 prefix (IPv6 Prefix) | Next jumping of IPv4 (IPv4 nexthop) | Outgoing interface information/link layer packaging information (Out Interface/L2 Encapuslation) |
| ??2001：3a0a::/32 | ??8.0.0.1 | ??Eth2，00-16-EC-93-E6-07 |
| ??2001：da8::/32 | ??211.1.1.4 | ??Pos1 |
| ??... | ??... | ??... |
As shown in table 1, IPv4 next hop address and outgoing interface/link layer packaging information that different IP v6 prefix is corresponding different.Above-mentioned IP v6 converting route is preserved and safeguarded to each bgp neighbor network element.
Know after the above-mentioned IP v6 converting route, on the backbone network of IPv4 network, know the next hop address and the outgoing interface information of described IPv6 message according to the prefix of IPv6 message and the IPv6 converting route safeguarded, wherein, described next hop address belongs to the IPv4 address; In backbone network, transmit above-mentioned IP v6 message according to described next hop address and outgoing interface information, and described IPv6 message is transferred described backbone network from described border network element.
For example, still with above-mentioned example explanation, AR1, after CR2 or CR1 receive the IPv6 message that edge network (as IPv6 network 1) sends, according to the prefix of IPv6 message, search the IPv6 converting route, find and AR1, CR2 or CR1 local direct-connected IPv4 next hop address and outgoing interface information forward this IPv6 message.With CR1 is example, after CR1 receives that prefix is the IPv6 message of PrefixN, in the IPv6 converting route, prefix PrefixN is mated, the next hop address of finding the IPv4 of this IPv6 prefix correspondence is address and the outgoing interface information of CR2, CR1 goes up the pairing link information of CR2 to this IPv6 message encapsulation, this IPv6 message is sent to CR2, and CR2 handles after the same method until this IPv6 message is sent to border network element AR2.
The technical scheme that the embodiment of the invention provides, can on the backbone network of IPv4 network, realize the IPv6 message forwarding, because what have the deficient problem in address is great amount of terminals equipment in the edge network, and the network equipment limited amount in the backbone network, required IP address is also limited, as long as in the backbone network of IPv4 network, realized the IPv6 message forwarding, just can solve the deficient problem in address in the existing IPv4 network, realize of the successful transition of IPv4 network to the IPv6 network.
The technical scheme of the embodiment of the invention, low to network requirement, need not in network, to set up the tunnel, also need not to require to move simultaneously in the network IPv4 and IPv6 two cover route agreements, can be based on independent IPv4 network, realize the IPv6 message forwarding, significantly reduced the complexity of network evolution and the difficulty of network operation, network performance is better.
The embodiment of the invention three provides a kind of network equipment, and as shown in Figure 4, described equipment comprises:
Routing iinformation is known unit 41, is used for the backbone network at the IPv4 network, and the corresponding relation of searching IPv6 prefix and next hop information with the prefix of IPv6 message obtains described next hop information, and wherein, described next hop information belongs to the IPv4 address;
Further, under first kind of mode, when generating the corresponding relation of above-mentioned IP v6 prefix and next hop information, the described network equipment also comprises:
First generation module is used to resolve routing iinformation from external network to obtain described IPv6 prefix, and the routing iinformation of this external network comprises described IPv6 prefix; IPv4 address by described IPv6 prefix and border network element generates the IPv6 prefix of this border network element and the corresponding relation of next hop information; Perhaps, first configuration module is used for the IPv6 prefix of pre-configured described border network element and the corresponding relation of next hop information;
Described routing iinformation is known unit 41, be used for backbone network at the IPv4 network, search IPv6 prefix that described first generation module or first configuration module obtain and the corresponding relation of next hop information obtains described next hop information with the prefix of IPv6 message, wherein, described next hop information belongs to the IPv4 address.
At this moment, the described network equipment can as the AR2 among Fig. 2, be realized by the border network element.This network equipment can obtain above-mentioned IPv6 prefix from external network or automatic configuration.
Further, under the second way, when generating the corresponding relation of above-mentioned IP v6 prefix and next hop information, the described network equipment also comprises:
Second generation module is used to resolve the notification packet from the border network element that receives, with the IPv6 prefix of obtaining this border network element and the corresponding relation of next hop information; Generate the local IPv6 prefix and the corresponding relation of next hop information by the IPv6 prefix of described border network element and the corresponding relation of next hop information; Perhaps,
Second configuration module is used for the IPv6 prefix of pre-configured this locality and the corresponding relation of next hop information;
Described routing iinformation is known unit 41, be used for backbone network at the IPv4 network, search IPv6 prefix that described second generation module or second configuration module obtain and the corresponding relation of next hop information obtains described next hop information with the prefix of IPv6 message, wherein, described next hop information belongs to the IPv4 address.
Wherein, described second generation module also comprises:
Search generation module, be used for next hop information, search the IPv4 routing iinformation of local coupling, obtain the local direct-connected next hop information of described IPv6 prefix according to described border network element; Generate the local IPv6 prefix and the corresponding relation of next hop information by IPv6 prefix in the corresponding relation of the IPv6 prefix of described border network element and next hop information and the local direct-connected next hop information of this IPv6 prefix found.
At this moment, the described network equipment can be by neighbours' network element of above-mentioned border network element, and as the bgp neighbor network element, as the AR1 among Fig. 2, CR2 or CR1 realize.This network equipment need internally network (IPv4 backbone network) or automatically configuration obtain above-mentioned IPv6 prefix.
Each functional unit or module can realize separately among apparatus of the present invention embodiment, also can be integrated in one or several unit and realize, the concrete working method of each functional unit and module is referring to the inventive method embodiment among apparatus of the present invention embodiment.
The technical scheme that the embodiment of the invention provides, can on the backbone network of IPv4 network, realize the IPv6 message forwarding, because what have the deficient problem in address is great amount of terminals equipment in the edge network, and the network equipment limited amount in the backbone network, required IP address is also limited, as long as in the backbone network of IPv4 network, realized the IPv6 message forwarding, just can solve the deficient problem in address in the existing IPv4 network, realize of the successful transition of IPv4 network to the IPv6 network.
The technical scheme of the embodiment of the invention, low to network requirement, need not in network, to set up the tunnel, also need not to require to move simultaneously in the network IPv4 and IPv6 two cover route agreements, can realize the IPv6 message forwarding based on independent IPv4 network, significantly reduced the complexity of network evolution and the difficulty of network operation, network performance is better.
The embodiment of the invention five also provides a kind of communication system, described system comprise under above-mentioned first kind of mode any the network equipment and the second way under any network equipment.
The technical scheme that the embodiment of the invention provides, can on the backbone network of IPv4 network, realize the IPv6 message forwarding, because what have the deficient problem in address is great amount of terminals equipment in the edge network, and the network equipment limited amount in the backbone network, required IP address is also limited, as long as in the backbone network of IPv4 network, realized the IPv6 message forwarding, just can solve the deficient problem in address in the existing IPv4 network, realize of the successful transition of IPv4 network to the IPv6 network.
The technical scheme of the embodiment of the invention, low to network requirement, need not in network, to set up the tunnel, also need not to require to move simultaneously in the network IPv4 and IPv6 two cover route agreements, can be based on independent IPv4 network, realize the IPv6 message forwarding, significantly reduced the complexity of network evolution and the difficulty of network operation, network performance is better.
Those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can software product form embody, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of IPv6 message forwarding method is characterized in that described method comprises:
On the backbone network of IPv4 network, the corresponding relation of searching IPv6 prefix and next hop information with the prefix of IPv6 message obtains described next hop information, and wherein, described next hop information belongs to IPv4 information;
According to described next hop information described IPv6 message is transmitted on described backbone network.
2, IPv6 message forwarding method according to claim 1 is characterized in that, described next hop information comprises next hop address, outgoing interface information and the link layer information of IPv4.
3, IPv6 message forwarding method according to claim 1 and 2 is characterized in that, generates the corresponding relation of described IPv6 prefix and next hop information in the following way:
To obtain described IPv6 prefix, the routing iinformation of this external network comprises described IPv6 prefix from the routing iinformation of external network in parsing; IPv4 address by described IPv6 prefix and border network element generates the IPv6 prefix of this border network element and the corresponding relation of next hop information; Perhaps,
The IPv6 prefix of pre-configured described border network element and the corresponding relation of next hop information.
4, IPv6 message forwarding method according to claim 1 and 2 is characterized in that, generates the corresponding relation of described IPv6 prefix and next hop information in the following way:
The notification packet from the border network element that parsing receives is with the IPv6 prefix of obtaining this border network element and the corresponding relation of next hop information; Generate the local IPv6 prefix and the corresponding relation of next hop information by the IPv6 prefix of described border network element and the corresponding relation of next hop information; Perhaps,
The IPv6 prefix of pre-configured this locality and the corresponding relation of next hop information.
5, IPv6 message forwarding method according to claim 4 is characterized in that, when the notification packet from the border network element that adopts described parsing to receive, with the IPv6 prefix of obtaining this border network element and the corresponding relation of next hop information; When being generated the mode of corresponding relation of local IPv6 prefix and next hop information by the corresponding relation of the IPv6 prefix of described border network element and next hop information, described method also comprises:
According to the next hop information of described border network element, search the IPv4 routing iinformation of local coupling, obtain the local direct-connected next hop information of described IPv6 prefix;
Generate the local IPv6 prefix and the corresponding relation of next hop information by IPv6 prefix in the corresponding relation of the IPv6 prefix of described border network element and next hop information and the local direct-connected next hop information of this IPv6 prefix found.
6, a kind of network equipment is characterized in that, the described network equipment comprises:
Routing iinformation is known the unit, is used for the backbone network at the IPv4 network, and the corresponding relation of searching IPv6 prefix and next hop information with the prefix of IPv6 message obtains described next hop information, and wherein, described next hop information belongs to the IPv4 address;
Retransmission unit is used for knowing the next hop information that the unit obtains according to described routing iinformation, and described IPv6 message is transmitted on described backbone network.
7, the network equipment according to claim 6 is characterized in that, the described network equipment also comprises:
First generation module is used to resolve routing iinformation from external network to obtain described IPv6 prefix, and the routing iinformation of this external network comprises described IPv6 prefix; IPv4 address by described IPv6 prefix and border network element generates the IPv6 prefix of this border network element and the corresponding relation of next hop information; Perhaps,
First configuration module is used for the IPv6 prefix of pre-configured described border network element and the corresponding relation of next hop information;
Described routing iinformation is known the unit, also be used for backbone network at the IPv4 network, search IPv6 prefix that described first generation module or first configuration module obtain and the corresponding relation of next hop information obtains described next hop information with the prefix of IPv6 message, wherein, described next hop information belongs to the IPv4 address.
8, the network equipment according to claim 6 is characterized in that, the described network equipment also comprises:
Second generation module is used to resolve the notification packet from the border network element that receives, with the IPv6 prefix of obtaining this border network element and the corresponding relation of next hop information; Generate the local IPv6 prefix and the corresponding relation of next hop information by the IPv6 prefix of described border network element and the corresponding relation of next hop information; Perhaps,
Second configuration module is used for the IPv6 prefix of pre-configured this locality and the corresponding relation of next hop information;
Described routing iinformation is known the unit, also be used for backbone network at the IPv4 network, search IPv6 prefix that described second generation module or second configuration module obtain and the corresponding relation of next hop information obtains described next hop information with the prefix of IPv6 message, wherein, described next hop information belongs to the IPv4 address.
9, the network equipment according to claim 8 is characterized in that, described second generation module also comprises:
Search generation module, be used for next hop information, search the IPv4 routing iinformation of local coupling, obtain the local direct-connected next hop information of described IPv6 prefix according to described border network element; Generate the local IPv6 prefix and the corresponding relation of next hop information by IPv6 prefix in the corresponding relation of the IPv6 prefix of described border network element and next hop information and the local direct-connected next hop information of this IPv6 prefix found.
10, a kind of communication system is characterized in that, described system comprises as claim 6 or the 7 described network equipments with as claim 6, the 8 or 9 described network equipments.
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| CN102143050A (en) * | 2010-09-29 | 2011-08-03 | 华为终端有限公司 | Network connection processing method and device for internet protocol version 6 (IPv6) network |
| WO2020142875A1 (en) * | 2019-01-07 | 2020-07-16 | 华为技术有限公司 | Routing distributing method, device and system |
| CN115314436A (en) * | 2022-07-11 | 2022-11-08 | 烽火通信科技股份有限公司 | BIER message forwarding method and device |
| WO2023169364A1 (en) * | 2022-03-11 | 2023-09-14 | 华为技术有限公司 | Routing generation method and apparatus, and data message forwarding method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102143050A (en) * | 2010-09-29 | 2011-08-03 | 华为终端有限公司 | Network connection processing method and device for internet protocol version 6 (IPv6) network |
| WO2020142875A1 (en) * | 2019-01-07 | 2020-07-16 | 华为技术有限公司 | Routing distributing method, device and system |
| US11888722B2 (en) | 2019-01-07 | 2024-01-30 | Huawei Technologies Co., Ltd. | Route advertisement method, device, and system |
| WO2023169364A1 (en) * | 2022-03-11 | 2023-09-14 | 华为技术有限公司 | Routing generation method and apparatus, and data message forwarding method and apparatus |
| CN115314436A (en) * | 2022-07-11 | 2022-11-08 | 烽火通信科技股份有限公司 | BIER message forwarding method and device |
| CN115314436B (en) * | 2022-07-11 | 2023-05-23 | 烽火通信科技股份有限公司 | BIER message forwarding method and device |
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| Publication number | Publication date |
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| CN101667968B (en) | 2011-12-07 |
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