CN102437932B - Method, device and system for managing link status information of low-speed link - Google Patents
Method, device and system for managing link status information of low-speed link Download PDFInfo
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Abstract
The embodiment of the invention provides a method for managing link status information of a low-speed link. The method comprises the following steps that: a first notification message sent by a second network device through the low-speed link, is received by a first network device; the first notification message is an HDLC (High-level Data Link Control) protocol message or a PPP (Point-to-point Protocol) protocol message of the link status information of the low-speed link at the side of the second network device; the first notification message is analyzed by the first network device to obtain the link status information of the low-speed link at the side of the second network device; and the link status information of the low-speed link at the side of the second network device is stored into a management information base. In addition, the embodiment of the invention further provides a device and system for managing the link status information of the low-speed link. According to the invention, the transmission of the link status information of the low-speed link between the network devices is realized and the management of the link status information of the low-speed link is realized.
Description
Technical field
The embodiment of the present invention relates to communication technical field, particularly relates to method, the Apparatus and system of the management of a kind of link status information of low-speed link.
Background technology
Many network management system all use automatic discovery feature (Automated Discovery) to carry out the change of tracking network topology, but this automatic discovery feature at most also can only trace into three-layer network, the network equipment is grouped into each internetworking protocol (Internet Protocol, IP) subnet.Two layers of discovery (Layer2Discovery) then may be used for the port and the LA Management Room Port Connection Information that find the network equipment, and can find client, switch, path between router and the webserver.The root of so detailed information to plan and requester network failure is very important.Link Layer Discovery Protocol (Link Layer Discovery Protocol, LLDP) be the two-layer protocol defined in 802.1ab, the network equipment can utilize LLDP to send the notification packet comprising link-state information to other adjacent network equipments, link-state information can be stored in the management information bank of NMP (Simple Network Management Protocol Management Information Base, SNMP MIB) by the neighbor device receiving this notification packet.Network manager can utilize network management system to pass through two layers of connection of the network link-state information understanding current network be stored in MIB, and then know whole topology of networks, these link-state informations can effectively help network manager to carry out network failure location and performance evaluation.At present, LLDP agreement can only be applied in Ethernet, for low speed chain circuit network, as: asynchronous transfer mode (Asynchronous Transfer Mode, ATM), the network of time division multiplexing (E1/T1) link, prior art does not effectively realize the method that link status information of low-speed link transmits in a network and manages.
Summary of the invention
Embodiments provide method, the Apparatus and system of the management of a kind of link status information of low-speed link, to realize in the network equipment comprising low speed chain circuit link status information of low-speed link in LA Management Room transmission, and then realize effective management to link status information of low-speed link.
Embodiments provide the method for a kind of link status information of low-speed link management, be applied to first network equipment and second network equipment by the direct-connected scene of low speed chain circuit, the method comprises:
Described first network equipment and described second network equipment do not run Link Layer Discovery Protocol LLDP, run point-to-point protocol PPP or high-level data link control procedure agreement HDLC and communicate;
Described first network equipment receives the first notification packet that described second network equipment is sent by low speed chain circuit, and described first notification packet is HDLC protocol massages or the ppp protocol message of the link-state information of the described low speed chain circuit carrying described second network equipment side; Protocol fields in described HDLC protocol massages or ppp protocol message frame form is link-state identification field, identifies described HDLC protocol massages or ppp protocol message for transmitting low speed chain circuit state information; Described low speed chain circuit state information is included in the information field in described HDLC protocol massages or ppp protocol message;
Described first network equipment is resolved described first notification packet, obtain the link-state information of the described low speed chain circuit of described second network equipment side, and the link-state information of the described low speed chain circuit of described second network equipment side is stored into management information bank.
Embodiments provide the device of a kind of link status information of low-speed link management, be deployed on first network equipment, it is direct-connected that described first network equipment and second network equipment pass through low speed chain circuit, described first network equipment and described second network equipment do not run Link Layer Discovery Protocol LLDP, run point-to-point protocol PPP or high-level data link control procedure agreement HDLC and communicate; Described device comprises:
Receiving element, for the first notification packet that first network equipment reception second network equipment is sent by low speed chain circuit, described first notification packet is HDLC protocol massages or the ppp protocol message of the link-state information of the described low speed chain circuit carrying described second network equipment side; Protocol fields in described HDLC protocol massages or ppp protocol message frame form is link-state identification field, identifies described HDLC protocol massages or ppp protocol message for transmitting low speed chain circuit state information; Described low speed chain circuit state information is included in the information field in described HDLC protocol massages or ppp protocol message;
Memory cell, for described first network equipment, described first notification packet is resolved, obtain the link-state information of the described low speed chain circuit of described second network equipment side, and the link-state information of the described low speed chain circuit of described second network equipment side is stored into management information bank.
Embodiments provide the system of a kind of link status information of low-speed link management, the direct-connected scene of low speed chain circuit is passed through for first network equipment and second network equipment, described first network equipment and described second network equipment do not run Link Layer Discovery Protocol LLDP, run point-to-point protocol PPP or high-level data link control procedure agreement HDLC and communicate; Described system comprises the device of a kind of link status information of low-speed link management that the embodiment of the present invention provides.
By method, Apparatus and system that the embodiment of the present invention provides a kind of link status information of low-speed link to manage, link status information of low-speed link can be realized in LA Management Room transmission in the network equipment comprising low speed chain circuit, and then the storage administration that can realize link status information of low-speed link, there is provided Informational support for network management system forms complete network topology structure to the network equipment comprising low speed chain circuit, favorable network management system carries out management and maintenance to the network comprising low speed chain circuit.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the method flow schematic diagram of a kind of link status information of low-speed link management that the embodiment of the present invention one provides;
Fig. 2 is HDLC message frame form schematic diagram in prior art of the present invention;
Fig. 3 is that in the method for a kind of link status information of low-speed link management that the embodiment of the present invention provides, low speed chain circuit state information is encapsulated in the encapsulation format schematic diagram in HDLC message in LLDPDU mode;
Fig. 4 is the device schematic diagram of a kind of link status information of low-speed link management that the embodiment of the present invention one provides;
Fig. 5 is the device schematic diagram of the another kind of link status information of low-speed link management that the embodiment of the present invention one provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one:
Embodiments provide the method for a kind of link status information of low-speed link management, see the method flow schematic diagram of a kind of link status information of low-speed link management that Fig. 1, Fig. 1 provide for the embodiment of the present invention, the method comprises:
102, first network equipment receives the first notification packet that second network equipment is sent by low speed chain circuit, and described first notification packet is HDLC protocol massages or the ppp protocol message of the link-state information of the described low speed chain circuit carrying described second network equipment side;
The link layer that LLDP agreement provides a kind of standard finds mode, the neighboring net-work device direct-connected with this local terminal network equipment can be given, for network management system inquiry and the communication conditions judging link by Information issued such as the management address of the local terminal network equipment, device identification, interface identifier.The present inventor finds for low speed chain circuit through research, as: ATM, E1/T1 link, MAC Address can not be encapsulated because message on these low speed chain circuits sends, LLDP agreement is caused to run, low speed chain circuit state information between the low speed chain circuit network equipment cannot be realized in LA Management Room transmission, and then the low speed chain circuit state information that cannot obtain between these low speed chain circuit network equipments each other, low speed chain circuit topology of networks cannot be formed, be not easy to network management.Due to low speed chain circuit all can run point-to-point protocol (Point-to-Point Protocol, or high-level data link control procedure agreement (High Level Data Link Control PPP), HDLC), HDLC is a kind of at Synchronization Network transmitting data, data link layer protocol towards position, network layer data bag can be encapsulated, be in the second layer of transmission control protocol/Internet Protocol (Transmission Control Protocol/Internet Protocol, TCP/IP).HDLC is bit-oriented synchronous communications protocol, is mainly the data transparency that full duplex point-to-point operation provides complete, is easy to expand.Inventor, through research, can carry low speed chain circuit state information by HDLC or ppp protocol message.Due to HDLC and ppp protocol message frame form similar, the embodiment of the present invention is described for HDLC agreement.Comprise in the network of low speed chain circuit network equipment in existence, first network equipment receives the first notification packet that second network equipment is sent by low speed chain circuit, this first notification packet is HDLC protocol massages or the ppp protocol message of the link-state information of this low speed chain circuit carrying this second network equipment side, preferably, can also comprise before or after this first network equipment receives this first notification packet that this second network equipment sent by this low speed chain circuit: this first network equipment sends the second notification packet by this low speed chain circuit to this second network equipment, this second notification packet is high-level data link control procedure agreement HDLC message or the point-to-point protocol PPP message of the link-state information of this low speed chain circuit carrying this first network equipment side.It is direct-connected that this first network equipment and this second network equipment pass through this low speed chain circuit.This low speed chain circuit state information at least comprises device identification, port-mark, one in the link-state information time-to-live or its combination, this device identification is used for marked network equipment, this port-mark is for identifying this low speed chain circuit port, this link-state information time-to-live is for identifying the time of this low speed chain circuit state information survival, when this time-to-live is to after date, this link-state information is invalid.In prior art, HDLC message frame form as shown in Figure 2, wherein information field is used for the data message that identifying user transmits, protocol type field is used for the protocol type of the data message that identifying user transmits, this low speed chain circuit state information is carried in the information field of PPP message or HDLC message frame form, carrying mode can combine (Type-Length-Value for type-length-value, TLV) mode of mode or other user's self-definings, the embodiment of the present invention is not done and is forced restriction.Protocol fields in this HDLC protocol massages or ppp protocol message is defined as link-state identification field in embodiments of the present invention, for identifying described first notification packet and described second notification packet for transmitting low speed chain circuit state information, this low speed chain circuit state information field value is arbitrary not by value that other agreements use, alternatively, the embodiment of the present invention is defined as 254.Such as, when this first network equipment receives the first notification packet that this second network equipment sent by this low speed chain circuit, by judging that the link-state identification field of this first notification packet is 254, then think that described second network equipment is sending the message comprising low speed chain circuit state information, described first network equipment needs to store this low speed chain circuit state information.
Alternatively, described low speed chain circuit state information is carried at can with Link Layer Discovery Protocol data cell (Link Layer Discovery Protocol Data Unit in the information field in HDLC message frame form, LLDPDU) form realizes, specific implementation adopts type-length-value combination (Type-Length-Value, TLV) mode encapsulates realization, device identification is comprised with link-state information, port-mark, the link-state information time-to-live is example, specific implementation as shown in Figure 3, Class1-length 1-information 1 field is used for marking equipment mark, type 2-length 2-information 2 field is used for identification port mark, type 3-length 3-information 3 field is for identifying the time-to-live of link-state information, correspondingly, link-state identification field is LLDP protocol type, wherein described in each, between link-state information, the order embodiment of the present invention does not do pressure restriction, as long as the described link-state information that can realize any sequential system correctly transmits all within the scope of the message of the embodiment of the present invention.Due to information field in PPP with HDLC protocol massages frame format and protocol fields meaning similar, this low speed chain circuit state information to be carried in PPP message frame form form and to be carried in HDLC message similar, is not repeated at this.
104, described first network equipment is resolved described first notification packet, obtain the link-state information of the described low speed chain circuit of described second network equipment side, and the link-state information of the described low speed chain circuit of described second network equipment side is stored into management information bank.
When this first network equipment receives this first notification packet, according to 102, the carrying mode of low speed chain circuit state information in PPP or HDLC described in 104 steps, by resolving the link status information of low-speed link that can obtain this second network equipment, this first network equipment is stored in the described link status information of low-speed link obtained in management information bank, and carry out unified management, so that network manager utilizes network management system to inquire about, described management information bank can be local management information bank, also can be the management information bank of far-end server.
Visible, by a kind of method that the embodiment of the present invention provides link status information of low-speed link to manage, link status information of low-speed link can be realized in LA Management Room transmission in the network equipment comprising low speed chain circuit, by the storage administration of management information bank to link status information of low-speed link, provide Informational support for network management system forms complete network topology structure to the low speed chain circuit network equipment.
Embodiment two:
Embodiments provide the device of a kind of link status information of low-speed link management, see the device schematic diagram of a kind of link status information of low-speed link management that Fig. 4, Fig. 4 provide for the embodiment of the present invention, this device comprises, this device comprises receiving element 402, memory cell 404.
Receiving element 402, for the first notification packet that first network equipment reception second network equipment is sent by low speed chain circuit, described first notification packet is HDLC protocol massages or the ppp protocol message of the link-state information of the described low speed chain circuit carrying described second network equipment side;
The link layer that LLDP agreement provides a kind of standard finds mode, the neighboring net-work device direct-connected with this local terminal network equipment can be given, for network management system inquiry and the communication conditions judging link by Information issued such as the management address of the local terminal network equipment, device identification, interface identifier.The present inventor finds for low speed chain circuit through research, as: ATM, E1/T1 link, MAC Address can not be encapsulated because message on these low speed chain circuits sends, LLDP agreement is caused to run, low speed chain circuit state information between the low speed chain circuit network equipment cannot be realized in LA Management Room transmission, and then the low speed chain circuit state information that cannot obtain between these low speed chain circuit network equipments each other, low speed chain circuit topology of networks cannot be formed, be not easy to network management.Due to low speed chain circuit all can run point-to-point protocol (Point-to-Point Protocol, or high-level data link control procedure agreement (High Level Data Link Control PPP), HDLC), HDLC is a kind of at Synchronization Network transmitting data, data link layer protocol towards position, network layer data bag can be encapsulated, be in the second layer of transmission control protocol/Internet Protocol (Transmission Control Protocol/Internet Protocol, TCP/IP).HDLC is bit-oriented synchronous communications protocol, is mainly the data transparency that full duplex point-to-point operation provides complete, is easy to expand.Inventor, through research, can carry low speed chain circuit state information by HDLC or ppp protocol message.Due to HDLC and ppp protocol message frame form similar, the embodiment of the present invention is described for HDLC agreement.Comprise in the network of low speed chain circuit network equipment in existence, first network equipment receiving element 402 receives the first notification packet that second network equipment is sent by low speed chain circuit, and this first notification packet is HDLC protocol massages or the ppp protocol message of the link-state information of this low speed chain circuit carrying this second network equipment side.This low speed chain circuit state information at least comprises device identification, port-mark, one in the link-state information time-to-live or its combination, this device identification is used for marked network equipment, this port-mark is for identifying this low speed chain circuit port, this link-state information time-to-live is for identifying the time of this low speed chain circuit state information survival, when this time-to-live is to after date, this link-state information is invalid.In prior art, HDLC message frame form as shown in Figure 2, wherein information field is used for the data message that identifying user transmits, protocol type field is used for the protocol type of the data message that identifying user transmits, this low speed chain circuit state information is carried in the information field of PPP message or HDLC message frame form, carrying mode can combine (Type-Length-Value for type-length-value, TLV) mode of mode or other user's self-definings, the embodiment of the present invention is not done and is forced restriction.Protocol fields in this HDLC protocol massages or ppp protocol message is defined as link-state identification field in embodiments of the present invention, for identifying described first notification packet and described second notification packet for transmitting low speed chain circuit state information, this low speed chain circuit state information field value is arbitrary not by value that other agreements use, alternatively, the embodiment of the present invention is defined as 254.Such as, when this first network equipment receiving element 402 receives the first notification packet that this second network equipment sent by this low speed chain circuit, by judging that the link-state identification field of this first notification packet is 254, then think that described second network equipment is sending the message comprising low speed chain circuit state information, described first network equipment needs to store this low speed chain circuit state information.
Alternatively, described low speed chain circuit state information is carried at can with Link Layer Discovery Protocol data cell (Link Layer Discovery Protocol Data Unit in the information field in HDLC message frame form, LLDPDU) form realizes, specific implementation adopts type-length-value combination (Type-Length-Value, TLV) mode encapsulates realization, device identification is comprised with link-state information, port-mark, the link-state information time-to-live is example, specific implementation as shown in Figure 3, Class1-length 1-information 1 field is used for marking equipment mark, type 2-length 2-information 2 field is used for identification port mark, type 3-length 3-information 3 field is for identifying the time-to-live of link-state information, correspondingly, link-state identification field is LLDP protocol type, wherein described in each, between link-state information, the order embodiment of the present invention does not do pressure restriction, as long as the described link-state information that can realize any sequential system correctly transmits all within the scope of the message of the embodiment of the present invention.Due to information field in PPP with HDLC protocol massages frame format and protocol fields meaning similar, this low speed chain circuit state information to be carried in PPP message frame form form and to be carried in HDLC message similar, is not repeated at this.
Memory cell 404, resolves described second notification packet for described first network equipment, obtains the link-state information of described second low speed chain circuit, and the link-state information of described second low speed chain circuit is stored into management information bank.
When this receiving element 402 receives this first notification packet, according to the carrying mode of low speed chain circuit state information in PPP or HDLC described in receiving element 402, this memory cell 404 is by resolving the link status information of low-speed link that can obtain this second network equipment, and the described link status information of low-speed link obtained is stored in management information bank, and carry out unified management, so that network manager utilizes network management system to inquire about, described management information bank can be local management information bank, also can be the management information bank of far-end server.
Preferably, this device can also comprise transmitting element 502 further, as shown in Figure 5.
Transmitting element 502, send second notification packet by described low speed chain circuit to second network equipment for described first network equipment, described second notification packet is high-level data link control procedure agreement HDLC message or the point-to-point protocol PPP message of the link-state information of the described low speed chain circuit carrying described first network equipment side.
This transmitting element 502 can perform before receiving element 402, also can perform after receiving element 402, and it is direct-connected that this first network equipment and this second network equipment pass through this low speed chain circuit.
Visible, by the device that the embodiment of the present invention provides a kind of link status information of low-speed link to manage, link status information of low-speed link can be realized in LA Management Room transmission in the network equipment comprising low speed chain circuit, by the storage administration of management information bank to link status information of low-speed link, provide Informational support for network management system forms complete network topology structure to the low speed chain circuit network equipment.
Embodiment three:
Embodiments provide the system of a kind of link status information of low-speed link management, described system comprises the device of a kind of link status information of low-speed link management that the embodiment of the present invention two provides.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, foregoing routine can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a method for link status information of low-speed link management, is applied to first network equipment and second network equipment by the direct-connected scene of low speed chain circuit, it is characterized in that, comprising:
Described first network equipment and described second network equipment do not run Link Layer Discovery Protocol LLDP, run point-to-point protocol PPP or high-level data link control procedure agreement HDLC and communicate;
Described first network equipment receives the first notification packet that described second network equipment is sent by low speed chain circuit, and described first notification packet is HDLC protocol massages or the ppp protocol message of the link-state information of the described low speed chain circuit carrying described second network equipment side; Protocol fields in described HDLC protocol massages or ppp protocol message frame form is link-state identification field, identifies described HDLC protocol massages or ppp protocol message for transmitting low speed chain circuit state information; Described low speed chain circuit state information is included in the information field in described HDLC protocol massages or ppp protocol message;
Described first network equipment is resolved described first notification packet, obtain the link-state information of the described low speed chain circuit of described second network equipment side, and the link-state information of the described low speed chain circuit of described second network equipment side is stored into management information bank.
2. method according to claim 1, is characterized in that, comprising:
Described first network equipment sends the second notification packet by described low speed chain circuit to described second network equipment, and described second notification packet is high-level data link control procedure agreement HDLC message or the point-to-point protocol PPP message of the link-state information of the described low speed chain circuit carrying described first network equipment side.
3. method according to claim 1 and 2, is characterized in that, described low speed chain circuit state information comprises one in following information or its combination:
Device identification, port-mark, link-state information time-to-live, wherein device identification is used for marked network equipment, port-mark is for identifying low speed chain circuit port, the link-state information time-to-live is for identifying the time of described link-state information survival, when the described time-to-live is to after date, described link-state information is invalid.
4. method according to claim 1 and 2, is characterized in that, comprising:
Described link-state identification field is LLDP Protocol Type value, and correspondingly, described low speed chain circuit state information is included in described HDLC protocol massages or ppp protocol message by LLDPDU form.
5. the device of a link status information of low-speed link management, be deployed on first network equipment, it is direct-connected that described first network equipment and second network equipment pass through low speed chain circuit, it is characterized in that, described first network equipment and described second network equipment do not run Link Layer Discovery Protocol LLDP, run point-to-point protocol PPP or high-level data link control procedure agreement HDLC and communicate;
Described device comprises:
Receiving element, for the first notification packet that first network equipment reception second network equipment is sent by low speed chain circuit, described first notification packet is HDLC protocol massages or the ppp protocol message of the link-state information of the described low speed chain circuit carrying described second network equipment side; Protocol fields in described HDLC protocol massages or ppp protocol message frame form is link-state identification field, identifies described HDLC protocol massages or ppp protocol message for transmitting low speed chain circuit state information; Described low speed chain circuit state information is included in the information field in described HDLC protocol massages or ppp protocol message;
Memory cell, for described first network equipment, described first notification packet is resolved, obtain the link-state information of the described low speed chain circuit of described second network equipment side, and the link-state information of the described low speed chain circuit of described second network equipment side is stored into management information bank.
6. device according to claim 5, is characterized in that, comprising:
Transmitting element, the second notification packet is sent by described low speed chain circuit to second network equipment for described first network equipment, described second notification packet is high-level data link control procedure agreement HDLC message or the point-to-point protocol PPP message of the link-state information of the described low speed chain circuit carrying described first network equipment side, described transmitting element can perform before described receiving element, also can perform after described receiving element.
7. the system of a link status information of low-speed link management, the direct-connected scene of low speed chain circuit is passed through for first network equipment and second network equipment, it is characterized in that, described first network equipment and described second network equipment do not run Link Layer Discovery Protocol LLDP, run point-to-point protocol PPP or high-level data link control procedure agreement HDLC and communicate; Described system comprises the device described in claim 5 or 6.
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| CN105376162B (en) * | 2014-08-30 | 2019-05-10 | 华为技术有限公司 | A kind of link-state information notifying method and equipment |
| CN107210963B (en) * | 2015-01-29 | 2021-04-09 | 罗伯特·博世有限公司 | Method for operating a computer network system and computer network system |
| CN110266530B (en) * | 2019-06-14 | 2022-05-27 | 浪潮思科网络科技有限公司 | Link discovery method and device based on Opendataright framework |
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| CN102223312A (en) * | 2011-07-26 | 2011-10-19 | 杭州华三通信技术有限公司 | Flow control method and equipment based on link status |
| CN102223278A (en) * | 2011-05-17 | 2011-10-19 | 中兴通讯股份有限公司 | Realization method and system for enabling LLDP function on non-Ethernet link |
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| CN102223278A (en) * | 2011-05-17 | 2011-10-19 | 中兴通讯股份有限公司 | Realization method and system for enabling LLDP function on non-Ethernet link |
| CN102223312A (en) * | 2011-07-26 | 2011-10-19 | 杭州华三通信技术有限公司 | Flow control method and equipment based on link status |
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