CN101588303B - Link status notice information interaction method and OSPF device - Google Patents
Link status notice information interaction method and OSPF device Download PDFInfo
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Abstract
The embodiment of the invention provides a link status notice information interaction method and an OSPF device, wherein the method comprises: obtaining link status notice information; and selecting alink in the range of the notice to transmit the link status notice information to the opposite terminal according to the link status notice information and the notice range thereof. Through the inven tive method and device, when a plurality of links between two OSPF devices are interconnected with each other through the OSPF protocol, at the premise of correct interaction of both messages, some necessary link interaction LSA information is selected to avoid the redundant notice of other links, thereby effectively reducing the bandwidth consumption of message and CPU consumption of two device for processing the messages.
Description
Technical field
The present invention relates to Internet technology, relate in particular to a kind of link status notice information interaction method and OSPF equipment.
Background technology
OSPF (Open Shortest Path First, OSPF Open Shortest Path First) is IETF (The Internet Engineering Task Force, the Internet engineering duty group) Interior Gateway Protocol of Zhi Dinging, regulation according to ospf protocol, the link information that router has by the direct link information that links to each other of mutual transmission and it to other routers, finally learn the topology information of the whole network, every router independently calculates separately shortest path tree according to these network topological informations then, generates the routing table of equipment.
In OSPF, ospf router need with set up syntople with the neighbor router that it directly links to each other, to carry out message interaction, and set up in the process of syntople at ospf router and neighbor router, ospf router need carry out data description (DD with neighbor router, DatabaseDescription) message interaction, and by Link State request message LS-Req, Link State Update Packet LS-Update and Link State response message LS-Ack synchronization link state advertisement (LSA, Link State Advertisement) information.
Wherein, Data Description (DD) packet has comprised the summary info of LSA, and LSA has described all link informations of this router, comprises interface message, router neighbor information and their state information.Ospf router can be announced to neighbor router by the LSA that self is known, when neighbor router is received LSA, the LSA information announcement of learning can be given other ospf neighbor router.By this mechanism, finally all OSPF equipment is all learnt whole net OSPF topology information, and by this topology information, calculates correct route.In LSA, also carried Router Distinguisher information, this Router Distinguisher information is used to discern that this LSA describes is the link-state information of which platform router.According to the ospf protocol regulation, dissimilar LSA has different announcement scopes, and at present, the announcement scope of LSA is divided into 3 classes, is respectively: link range, represent that this LSA has only carried the information of this OSPF link, and this LSA only announces in this OSPF link; Regional extent, expression LSA loaded information is the information of ospf area attribute, this LSA announces in the ospf area of correspondence; And whole ospf domain scope, expression LSA loaded information is whole ospf domain, this LSA need announce in whole ospf domain.
The inventor finds in realizing process of the present invention, when passing through a plurality of link interconnect between two OSPF equipment RTA and the RTB, stipulate according to ospf protocol standard (RFC 2328), these a plurality of links all need to set up the ospf neighbor relation, and LSA information is learnt in announcement mutually, will cause the message of bulk redundancy like this.
For example, between two OSPF equipment RTA and the RTB, set up syntople by link Eth1 and Eth2, increase one this moment newly and connect Eth3, when setting up ospf adjacency and concerning, according to the ospf protocol standard, OSPF equipment RTA need with the mutual Data Description (DD) packet of neighbor router RTB, announce all LSA information that this machine RTA has acquired to neighbor router RTB; Again for example, when two OSPF equipment RTA and RTB have set up syntople by a plurality of link Eth1 and Eth2, this moment is if RTA learns a new LSA information, stipulate according to ospf protocol, need announce all links in the scope by LSA, announce this LSA by the LS-Update message to neighbor router RTB, when neighbor router RTB receives LSA information, need to reply a LS-Ack message simultaneously, expression has received this LSA.
Summary of the invention
Set up syntople in order to solve two OSPF equipment by multilink, may there be a large amount of redundant messages, the problem of Data Description (DD) packet, LS-Update message and LS-Ack message etc. for example, the embodiment of the invention provides a kind of link status notice information interaction method and OSPF equipment.
The above-mentioned purpose of the embodiment of the invention is achieved by the following technical solution:
A kind of link status notice information interaction method, described method comprises: obtain link state notification information; According to described link state notification information and announcement scope thereof, in the announcement scope of described link state notification information, select a link to transmit described link state notification information to the opposite end.
A kind of ospf reason agreement OSPF equipment, described OSPF equipment comprises: acquiring unit is used to obtain link state notification information; Selected cell is used for the announcement scope of each link state notification information of the link state notification information obtained according to described acquiring unit and ospf protocol regulation, selects a link in the announcement scope of described link state notification information; Transfer unit is used for transmitting described link state notification information to the opposite end according to the selected link of described selected cell by selected link.
The method and apparatus that provides by the embodiment of the invention, when existing multilink to pass through ospf protocol when interconnected between two the OSPF equipment, guaranteeing under the mutual prerequisite of both sides' message correctly, only select the mutual LSA information of some necessary link wherein, avoided the redundancy announcement of other link, effectively reduce the bandwidth consumption of message, and terminal device is handled the CPU consumption of message.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is the method flow diagram of the embodiment of the invention;
Fig. 2 is the OSPF equipment network schematic diagram of the embodiment of the invention;
Fig. 3 is the OSPF equipment composition frame chart of the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is described in further details below in conjunction with embodiment and accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
Embodiment one
The embodiment of the invention provides a kind of link status notice information interaction method, below in conjunction with accompanying drawing present embodiment is elaborated.
Fig. 1 is the method flow diagram of present embodiment, please refer to Fig. 1, and the link status notice information interaction method of present embodiment comprises:
101: obtain link state notification information;
102:, in the announcement scope of described link state notification information, select a link to transmit described link state notification information to the opposite end according to described link state notification information and announcement scope thereof.
According to the step 101 of present embodiment, link state notification information can be to set up the summary info of the LSA that is generated in the process of syntople with the opposite end, transmitting by the data description Data Description (DD) packet; Also can be the details of the LSA after setting up syntople, newly learnt,, specifically will in following embodiment, be elaborated by the Link State Update Packet transmission with the opposite end.
Wherein, when link state notification information is to set up the summary info of the LSA that is generated in the syntople process with the opposite end, and when transmitting by the data description Data Description (DD) packet, if this link state notification information is to set up in the process of syntople with the opposite end first by a new link connection to generate, then according to ospf protocol specified standard flow process, this link state notification information is uploaded in above-mentioned new link connection and is passed, and in this case, and has only a link between the opposite end; And if this link state notification information is not to set up in the process of syntople with the opposite end first to generate, that is to say, before syntople is set up in new link connection and opposite end by this, set up syntople by other link and opposite end, then according to the method for present embodiment, if the link state notification information of different announcement scopes is delivered to the opposite end by other links, then no longer transmit, and, still can in announcement scope separately, select a link to be delivered to the opposite end for the link state notification information that is not passed to the opposite end.
Wherein, when link state notification information the details of the LSA after setting up syntople, newly learnt with the opposite end, and when transmitting by Link State Update Packet, if this link state notification information is generated by this locality, then at each neighbour, the method for present embodiment will select a link to transmit respectively in each announcement scope the link state notification information of different announcement scopes in this link state notification information; If this link state notification information receives from some neighbours, then at other neighbours except that these neighbours, the method for present embodiment will select a link to transmit respectively in each announcement scope the information of different announcement scopes in this link state notification information.
According to the method for present embodiment, if in the link state notification information transmittance process, the announcement link of link state notification information correspondence breaks, and is the link state notification information of announcing in the link for the announcement scope then, no longer selects other link transmission; For the announcement scope is the link state notification information of announcement in the zone, then selects a link transmission in above-mentioned zone in addition; For the announcement scope is the link state notification information of announcing in the scope of autonomous territory, then selects a link transmission in the scope of above-mentioned autonomous territory in addition.Wherein, the mode of selection link repeats no more as hereinbefore here.
Method by present embodiment, guaranteeing that link state notification information passes under neighbours' the prerequisite by a link, on more link, do not carry out redundant transmission, effectively reduced in the multilink application, the redundancy announcement of OSPF message (for example Data Description (DD) packet, Link State renewal and response message etc.) has reduced the extra receiving of link bandwidth consumption and CPU and has handled consumption.
For the method that makes present embodiment is clear more understandable, be elaborated below in conjunction with the flow process of LSA information interaction between two concrete OSPF equipment method to present embodiment.
Fig. 2 is in the network environment, the networking schematic diagram of two OSPF equipment RTA and RTB, please refer to Fig. 2, the ID of RTA is 1.1.1.1, the ID of RTB is 2.2.2.2, sequentially respectively by belonging to the link Eth 1 of regional area0, the link Eth 2 that belongs to regional area0 sets up syntople with the link Eth 3 that belongs to regional area1 between RTA and the RTB.
Use the present embodiment method, when RTA and RTB when setting up syntople by Eth 1, owing to be to set up syntople first, RTA detects the neighbours RTB that router-id is 2.2.2.2 first, so RTA need join all in the DD summary sheet to the LSA information that this neighbours RTB transmits, DD gathers tabulation and is used to gather all LSA information mutual with neighbours, generates Data Description (DD) packet according to this DD summary sheet again, on Eth1 with the mutual above-mentioned Data Description (DD) packet of RTB.
Use the present embodiment method, when RTA and RTB when setting up syntople by Eth 2, when RTA detects RTB, owing in the area0 of one's respective area, set up syntople by Eth 1 and RTB, be that RTA has issued neighbours RTB by Eth 1 with LSA information, so RTA is when carrying out the DD announcement by Eth2, the LSA that announces scope at difference need carry out following different processing:
For the announcement scope is the LSA of link, because it is not mutual to carry out Data Description (DD) packet on this link Eth2, therefore, need be that the LSA of link adds in the DD summary sheet of neighbours RTB with the announcement scope, and it is mutual to carry out Data Description (DD) packet by link Eth2 and neighbours RTB.
For the announcement scope is the LSA in zone, owing in the area0 scope of one's respective area, set up syntople by link Eth1 and RTB, i.e. announcement scope has been announced to RTB by link Eth1 for the LSA in zone, therefore, the announcement scope is the LSA of announcement in the zone, does not add that to carry out Data Description (DD) packet in the DD summary sheet mutual.
For the announcement scope is LSA in the whole ospf domain, owing to set up syntople by link Eth1 and RTB in whole general area, i.e. announcement scope is that the LSA of ospf domain announces to RTB by link Eth1, therefore, announcement scope is that the LSA of ospf domain does not add that to carry out Data Description (DD) packet in the DD summary sheet mutual.
Use the present embodiment method, when RTA and RTB when setting up syntople by Eth 3, when RTA detects RTB, owing in zones of different area0, set up syntople by Eth 1 and RTB, promptly in regional area0, RTA has issued neighbours RTB with LSA information, so RTA is being undertaken by Eth3 DD when announcement, need carry out following different processing at the LSA of difference announcement scope:
For the announcement scope is the LSA of link, because it is not mutual to carry out Data Description (DD) packet on this link Eth3, therefore, need be that the LSA of link adds in the DD summary sheet of neighbours RTB with the announcement scope, and it is mutual to carry out Data Description (DD) packet by link Eth3 and neighbours RTB.
For the announcement scope is the LSA in zone, owing in the area1 scope of one's respective area, do not have link and RTB to set up syntople, i.e. announcement scope is that the LSA in zone does not also give RTB by any link advertisement in regional area1 scope, therefore, the announcement scope is the LSA of announcement in the zone, still will add in the DD summary sheet, it is mutual to carry out Data Description (DD) packet by link Eth3 and RTB.
For the announcement scope is LSA in the whole ospf domain, owing to set up syntople by link Eth1 and RTB in whole general area, i.e. announcement scope is that the LSA of ospf domain announces to RTB by link Eth1, therefore, announcement scope is that the LSA of ospf domain does not add that to carry out Data Description (DD) packet in the DD summary sheet mutual.
Use the method for present embodiment, when RTA and RTB set up syntople by multilink, at this moment, if RTA newly learns a LSA, for example receive a LS-Update message from a certain neighbours, RTA need confirm the LSA information in this message, and selects a link advertisement to other neighbours except that above-mentioned neighbours in its announcement scope corresponding LSA information.
Receive a LSA information with RTA (1.1.1.1) below, give neighbours RTB (2.2.2.2) for example describes, wherein by the link advertisement of selecting:
When from regional area 0, can be the link Eth 1 of regional area 0, when the neighbours on the link in the link Eth2 of regional area 0 or other any area 0 received a LSA information, the LSA at difference announcement scope selected different links, comprising:
For the announcement scope is the LSA of link, and according to inundation (FLOOD) rule of agreement regulation, this LSA only announces to other neighbours at receiving interface, not by other interface announcements.Wherein, the corresponding link of receiving interface, but not necessarily have only neighbours, and connect by hub as device A, B, C, when then device A received the LSA of equipment B announcement, equipment C was given in announcement.
For the announcement scope is the LSA in zone, inundation rule according to the agreement regulation, this LSA need announce to all neighbours in the area 0, comprise the neighbours with 2 mouthfuls of foundation of Eth by 1 mouthful of Eth, method according to present embodiment, this moment, LSA only sent to neighbours for 1 mouthful by Eth, and not to 2 mouthfuls of transmissions of Eth.
For the announcement scope is LSA in the whole ospf domain, and according to the inundation rule of agreement regulation, this LSA need announce all neighbours to general area, method according to present embodiment, the neighbours of announcement are optimized for, only send to neighbours for 1 mouthful, saved bandwidth by Eth.
When the neighbours on the link in regional area 1 received a LSA information, the LSA at difference announcement scope selected different links, comprising:
For the announcement scope is the LSA of link, according to the agreement regulation, announces to other neighbours at receiving port Eth3, not other interface in area 1 (figure does not show) this LSA of inundation.
For the announcement scope is the LSA in zone, and according to the inundation rule of agreement regulation, this LSA need announce to all other neighbours in the area 1, comprises by Eth 3 announcements to give neighbours RTB.
For the announcement scope is LSA in the whole ospf domain, inundation rule according to the agreement regulation, this LSA need announce all neighbours to general area, comprise by Eth 1, Eth 2, and 3 three interface inundations of Eth are given RTB, according to the method for present embodiment, be to the packet optimization of RTB announcement, only by 1 mouthful of transmission of Eth.For this LSA, the CPU that has saved 2/3 bandwidth and handled message consumes.
Use the method for present embodiment, when the link that transmits a certain class LSA information breaks, for example the neighbours RTB of Eth1 interface correspondence breaks, and then selects link transmission in addition according to the announcement scope of these LSA information, comprising:
For the announcement scope is the LSA of link, because a link only can set up one with neighbours and link, and this link has broken, so this class LSA need not re-transmission.
For the announcement scope is the LSA in zone, need this moment to judge in the regional area0 of Eth1 interface correspondence, whether also to exist another link and RTB to set up syntople, in the present embodiment, link Eth 2 and RTB have also set up syntople, therefore, according to the method for present embodiment, pass RTB by Eth 2 oral instructions with this class LSA.Guarantee that the correct announcement of this LSA information is to RTB.
For the announcement scope is LSA in the whole ospf domain, need this moment to judge in all general area, whether to exist extra link and RTB to set up syntople, in the present embodiment, link Eth 2 and Eth 3 have set up syntople with RTB, therefore, according to the method for present embodiment, one of them that select above-mentioned intact link announced this class LSA again to RTB.
In prior art, OSPF equipment is being set up in the syntople process by multilink and neighbours, can be by the summary info of Data Description (DD) packet interactive link state advertisement, and after OSPF equipment and neighbours have set up syntople, can be by the details of Link State Update Packet and Link State response message interactive link state advertisement, method according to present embodiment, between two OSPF equipment, use in the application of multilink backup, guaranteeing that LSA information passes under neighbours' the prerequisite by a link, on more link, do not carry out redundant transmission, effectively reduce the quantities of messages of communication, reduced the extra receiving of link bandwidth consumption and CPU and handled consumption.
Embodiment two
The embodiment of the invention also provides a kind of OSPF equipment, is elaborated below in conjunction with the OSPF equipment of accompanying drawing to present embodiment.
Fig. 3 is the OSPF equipment composition frame chart of present embodiment, please refer to Fig. 3, and the OSPF equipment of present embodiment mainly comprises:
Acquiring unit 31 is used to obtain link state notification information;
Selected cell 32 is used for the announcement scope of each link state notification information of the link state notification information obtained according to described acquiring unit and ospf protocol regulation, selects a link in the announcement scope of described link state notification information;
Transfer unit 33 is used for transmitting described link state notification information to the opposite end according to the selected link of described selected cell by selected link.
According to a preferred embodiment mode of present embodiment, this OSPF equipment also comprises:
First judging unit 34 is used for the link state notification information that gets access to according to acquiring unit 31, judges in the described link state notification information whether had the link state notification information of different announcement scopes to be passed to the opposite end in each announcement scope.
In the present embodiment mode, if in the described link state notification information, had the link state notification information of different announcement scopes to be passed to the opposite end in each announcement scope, then transfer unit 33 no longer sends the link state notification information that has been delivered to the opposite end.
According to another preferred embodiment mode of present embodiment, acquiring unit 31 can comprise:
First selects module 311, and being used for selecting this link is the relays link of the link state notification information announced in the link range as the announcement scope of link state notification information;
Second selects module 312, and being used for selecting in the one's respective area link is the relays link of the link state notification information announced in the regional extent as the announcement scope of link state notification information;
The 3rd selects module 313, and being used for selecting in this ospf domain a link is the relays link of the link state notification information announced in the scope of autonomous territory as the announcement scope of link state notification information.
In the present embodiment, second select module 312 in the one's respective area, to select the link of an interface bandwidth maximum as relays link; Perhaps, also can be when the maximum corresponding multilink of one's respective area inner joint bandwidth, select the maximum or minimum link of interface index value in the described multilink as relays link.The 3rd selects module 313 to select the link of an interface bandwidth maximum as relays link in this ospf domain; Perhaps, also can be when the maximum corresponding multilink of this ospf domain inner joint bandwidth, select the maximum or minimum link of interface index value in the described multilink as relays link.
According to another preferred embodiment mode of present embodiment, this OSPF equipment also comprises:
Second judging unit 35, just be used to judge whether the link in relays link state advertisement information lost efficacy, and described just in the link failure of relays link state advertisement information, and when in the announcement scope of described link state notification information, also having at least one link, by the announcement scope of selected cell 32 according to described link state notification information, in the announcement scope, reselect a link, so that transfer unit 33 transmits described link state notification information on selected link.
The OSPF equipment of present embodiment is used to realize the function of each step of the method for previous embodiment, owing in preceding method embodiment, each step is had been described in detail, so do not repeat them here.
OSPF equipment by present embodiment, guaranteeing that link state notification information passes under neighbours' the prerequisite by a link, on more link, do not carry out redundant transmission, effectively reduced in the multilink application, the redundancy announcement of OSPF message (for example Data Description (DD) packet, Link State renewal and response message etc.) has reduced the extra receiving of link bandwidth consumption and CPU and has handled consumption.
In prior art, OSPF equipment is being set up in the syntople process by multilink and neighbours, can be by the summary info of Data Description (DD) packet interactive link state advertisement, and after OSPF equipment and neighbours have set up syntople, can be by the details of Link State Update Packet and Link State response message interactive link state advertisement, OSPF equipment according to present embodiment, between two OSPF equipment, use in the application of multilink backup, guaranteeing that LSA information passes under neighbours' the prerequisite by a link, on more link, do not carry out redundant transmission, by optimization to the data description message of the summary info of relays link state advertisement, with to the Link State Update Packet of the details of relays link state advertisement and the optimization of Link State response message, effectively reduce the quantities of messages of communication, reduced the extra receiving of link bandwidth consumption and CPU and handled consumption.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a link status notice information interaction method is characterized in that, described method comprises:
Obtain link state notification information;
If in the described link state notification information, there has been the link state notification information of different announcement scopes in each announcement scope, to be passed to the opposite end, then in described each announcement scope, do not send the link state notification information that has been delivered to the opposite end; Otherwise, in the announcement scope of described link state notification information, select a link to transmit described link state notification information to the opposite end according to described link state notification information and announcement scope thereof;
If the link failure of relays link state advertisement information, and in the announcement scope of described link state notification information, also there is at least one link, then, in the announcement scope, reselect a link and transmit described link state notification information according to the announcement scope of described link state notification information.
2. method according to claim 1 is characterized in that, the described step of obtaining link state notification information comprises:
The local link state notification information that generates; Perhaps
Receive the link state notification information that neighbours send.
3. method according to claim 1 is characterized in that, selects a link to transmit described link state notification information in the announcement scope of described link state notification information and comprises to the step of opposite end:
In described link state notification information, the announcement scope is that the link state notification information of announcement in the link range is transmitted on described link;
In described link state notification information, the announcement scope is that the link state notification information of announcement in the regional extent is selected a link transmission in described zone;
In described link state notification information, the announcement scope is that the link state notification information of announcement in the scope of autonomous territory is selected a link transmission in described autonomous territory.
4. method according to claim 3 is characterized in that, the step of a link transmission of described selection comprises:
Select the link transmission of an interface bandwidth maximum; Perhaps
If the maximum corresponding multilink of interface bandwidth is then selected the maximum or minimum link transmission of interface index value in the described multilink.
5. method according to claim 1 is characterized in that:
Described link state notification information is the summary info of LSA, and then described link state notification information is transmitted by the data description message; Perhaps
Described link state notification information is the details of LSA, and then described link state notification information is by the Link State Update Packet transmission.
6. ospf reason agreement OSPF equipment is characterized in that described OSPF equipment comprises:
Acquiring unit is used to obtain link state notification information;
First judging unit is used for the link state notification information that gets access to according to described acquiring unit, judges in the described link state notification information whether had the link state notification information of different announcement scopes to be passed to the opposite end in each announcement scope;
Selected cell is used for the announcement scope of each link state notification information of the link state notification information obtained according to described acquiring unit and ospf protocol regulation, selects a link in the announcement scope of described link state notification information;
Transfer unit, the judged result that is used at described first judging unit is a link state notification information, when having had the link state notification information of different announcement scopes in each announcement scope, to be passed to the opposite end, no longer send the link state notification information that has been delivered to the opposite end; Otherwise, transmit described link state notification information to the opposite end by selected link according to the selected link of described selected cell;
Second judging unit, just be used to judge whether the link in relays link state advertisement information lost efficacy, and described just in the link failure of relays link state advertisement information, and when in the announcement scope of described link state notification information, also having at least one link, by the announcement scope of described selected cell according to described link state notification information, in the announcement scope, reselect a link, and transmit described link state notification information by described transfer unit.
7. OSPF equipment according to claim 6 is characterized in that, described acquiring unit comprises:
Generation module is used in this locality generation link state notification information; And or
Receiver module is used to receive the link state notification information that neighbours send.
8. OSPF equipment according to claim 6 is characterized in that, described selected cell comprises:
First selects module, and being used for selecting this link is the relays link of the link state notification information announced in the link range as the announcement scope of link state notification information;
Second selects module, and being used for selecting in the one's respective area link is the relays link of the link state notification information announced in the regional extent as the announcement scope of link state notification information;
The 3rd selects module, and being used for selecting in this ospf domain a link is the relays link of the link state notification information announced in the scope of autonomous territory as the announcement scope of link state notification information.
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| CN2009101507065A CN101588303B (en) | 2009-06-22 | 2009-06-22 | Link status notice information interaction method and OSPF device |
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| US8964732B2 (en) * | 2011-03-25 | 2015-02-24 | Futurewei Technologies, Inc. | System and method for topology transparent zoning in network communications |
| CN102882779A (en) * | 2011-07-14 | 2013-01-16 | 中兴通讯股份有限公司 | VRRP (Virtual Router Redundancy Protocol) advertisement link protection method and system |
| CN103178983A (en) * | 2011-12-26 | 2013-06-26 | 中兴通讯股份有限公司 | Method and device for configuring shortest path first protocol interface area identifications |
| CN102685005B (en) * | 2012-04-28 | 2016-03-30 | 华为技术有限公司 | Method for routing and router |
| CN103004150B (en) * | 2012-06-27 | 2015-07-08 | 华为技术有限公司 | Shortest path first neighbor establishing method, node and system thereof |
| CN103001879B (en) * | 2012-06-29 | 2015-09-23 | 杭州华三通信技术有限公司 | Reduce the method and apparatus of LSA inundation number of times |
| CN102904817B (en) * | 2012-10-24 | 2015-05-20 | 福建星网锐捷网络有限公司 | Transmitting method for link state advertisement (LSA), OSPF (open shortest path first interior gateway protocol) equipment and network system |
| CN104378294B (en) * | 2014-11-26 | 2018-02-13 | 上海斐讯数据通信技术有限公司 | A kind of method and system for reducing LSD size |
| CN105721320B (en) * | 2014-12-05 | 2020-01-07 | 中兴通讯股份有限公司 | Method, device and system for synchronously realizing link state notification information |
| CN112558504B (en) * | 2019-09-10 | 2021-11-02 | 中国电信股份有限公司 | Method, device and system for forwarding critical path information based on OSPF protocol |
| CN110896377B (en) * | 2019-11-19 | 2021-08-17 | 迈普通信技术股份有限公司 | OSPF routing control method and device |
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