CN103858388A - Loop detection method and apparatus - Google Patents
Loop detection method and apparatus Download PDFInfo
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- CN103858388A CN103858388A CN201380001520.8A CN201380001520A CN103858388A CN 103858388 A CN103858388 A CN 103858388A CN 201380001520 A CN201380001520 A CN 201380001520A CN 103858388 A CN103858388 A CN 103858388A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses a loop detection method and an apparatus, relating to the technology field of the communication, which solves the problems that in prior art non-standard LLDP message carrying self-defined specific protocol number conflicts with other self-defined user message. A first apparatus transmits a first link layer discovery protocol (LLDP) data unit protocol to a second apparatus. The first LDDP protocol comprises a first loop detection information including loop detection types, an apparatus identification of the first apparatus and a port number of a first port. The first apparatus acquires the second LLDP message transmitted by the second apparatus from a second port. The second LLDP message comprises the first loop detection information. The second port is the one different from the first port. The first apparatus determines the presence between the first port and the second port. The embodiment of the invention is applied in the process of the loop detection.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of loop detecting method and device.
Background technology
Power over Ethernet (Power Over Ethernet, POE) is when being ethernet client transmission of data signals by five class netting twines of standard, and the technology of direct current supply is also provided for it.A complete POE system comprises feeder ear equipment PSE(Power Sourcing Equipment, PSE feeder ear equipment) and receiving end equipment PD(Powered Device, PD receiving end equipment) two parts, wherein, PSE is the equipment for the power supply of ethernet client equipment, also be the manager of whole POE Power over Ethernet process simultaneously, and PD is the client device of accepting power supply, as micro-base station, WLAN AP wireless local network connecting point (Wireless Local Area Network Access Point, WLAN AP wireless local network connecting point) etc.
Link Layer Discovery Protocol (Link Layer Discovery Protocol, LLDP) be that a kind of link layer is found mode, the Information Organization of local device can be become to different types, length, value (Type, Length, Value, TLV) cell of formal definition is encapsulated in Link Layer Discovery Protocol data cell (LLDP Data Unit, LLDPDU) in, send to direct-connected neighbours, simultaneously also the LLDPDU receiving from neighbours with standard mib (Management Information Base, MIB) form saves, inquire about for network management system, and judge the communication conditions of link.
LLDP message format as shown in Figure 1, comprise object Media Access Controlled layer (Destination Media Access Control, DMAC) address, source Media Access Controlled layer (Source MAC, SMAC) address, virtual local area network tags (Virtual Local Area Network tag, VLAN tag), EtherType (Ethernet type) and payload (Data), the protocol number that wherein EtherType comprises is the fixed value of LLDP protocol definition, the LLDP message of all transmissions all can carry described protocol number, wherein, namely LLDPDU of payload.
IEEE802.3af(2003) standard has stipulated that PSE can be by the Ethernet PD below 13W power supply to power, IEEE802.3at(2009) power that defined PSE and can provide is about 30W.But, adopting at present in the wireless network of POE power supply, the power of micro-base station far exceedes the 30W power of IEEE802.3at regulation, therefore, when micro-base station is during as PD, adopts two solutions that netting twine is powered to micro-base station.Power because described micro-base station exists two netting twines, described micro-base station just exists two ports to carry out data-signal transmission, can form loop, causes the waste of bandwidth resources, therefore needs to take loop detecting method to detect and removes loop.
In the prior art, define specially a message that carries customizing messages, between local device and opposite equip., transmit, carry out loop detection.In described message, the MAC Address of local device will be carried in the DMAC shown in Fig. 1; EtherType is set to self-defining specific protocol number, for example 0x9000; Payload comprises the port number information that sends described message.After local device sends the message that carries customizing messages, to monitor in real time the message that other ports receive, the information of carrying according to reception message determines whether described customizing messages, if it is there is loop with the port that sends described message in the port of explanation reception message, and loop is removed.
State in realization in the process of loop detection, inventor finds that in prior art, at least there are the following problems: the message that carries customizing messages of definition is not the LLDP message of standard, for example in EtherType, carry self-defining specific protocol number, may conflict mutually with other self-defining user's messages, or in the time carrying out protocol number expansion, conflict mutually in the future.
Summary of the invention
Embodiments of the invention provide a kind of loop detecting method and device, have avoided adopting non-standard LLDP message and the afoul problem of user's message.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, the invention provides a kind of loop detecting method, comprising:
The first equipment sends to the second equipment by the first port by the first Link Layer Discovery Protocol data cell LLDP message, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Described the first equipment obtains from the second port and receives the 2nd LLDP message that described the second equipment sends, and wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port;
Described the first equipment is determined between described the first port and described the second port and is had loop.
Second aspect, the invention provides another kind of loop detecting method, comprising:
The second equipment receives the first Link Layer Discovery Protocol data cell LLDP message that the first equipment sends by the first port, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Obtain the first loop detection information in a described LLDP message;
Described the second equipment is according to described the first loop detection Information generation the 2nd LLDP message, and described the 2nd LLDP message comprises the first loop detection information;
Described the second loop detection message is sent to described the first equipment by described the second equipment.
The third aspect, the invention provides a kind of network equipment, comprising:
Transmitting element, for the first Link Layer Discovery Protocol data cell LLDP message being sent to the second equipment by the first port, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Acquiring unit, receives for obtaining from the second port the 2nd LLDP message that described the second equipment sends, and wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port;
Determining unit, determines between described the first port and described the second port and has loop for described the first equipment.
Fourth aspect, the invention provides a kind of network equipment, comprising:
Receiving element, the the first Link Layer Discovery Protocol data cell LLDP message sending by the first port for receiving the first equipment, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Acquiring unit, for obtaining the first loop detection information of a described LLDP message;
Generation unit, for described the second equipment, according to described the first loop detection Information generation the 2nd LLDP message, described the 2nd LLDP message comprises the first loop detection information;
Transmitting element, for sending to described the first equipment by described the second loop detection message.
The 5th aspect, the invention provides a kind of network equipment, comprising:
Memory, for storing software program and message;
Communication port, for sending and receiving message;
Processor, for the software program of execute store, specifically carry out:
By the first port, the first Link Layer Discovery Protocol data cell LLDP message is sent to the second equipment, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Described the first equipment obtains from the second port and receives the 2nd LLDP message that described the second equipment sends, and wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port;
Described the first equipment is determined between described the first port and described the second port and is had loop.
The 6th aspect, the invention provides a kind of network equipment, comprising:
Memory, for storing software program and message;
Communication port, for sending and receiving message;
Processor, for the software program of execute store, specifically carry out:
Receive the first Link Layer Discovery Protocol data cell LLDP message that the first equipment sends by the first port, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Obtain the first loop detection information in a described LLDP message;
According to described the first loop detection Information generation the 2nd LLDP message, described the 2nd LLDP message comprises the first loop detection information;
Described the second loop detection message is sent to described the first equipment.
A kind of loop detecting method and device that the embodiment of the present invention provides, the first equipment generates the first loop detection message according to local device mark and first end slogan, described the first loop detection message comprises Link Layer Discovery Protocol data cell LLDPDU, described LLDPDU comprises that type is the type lengths values TLV of loop detection, value in described TLV comprises local device mark and first end slogan, described first end slogan is the port numbers corresponding to the first port of described the first loop detection message to be sent, at least there are two ports in described the first equipment, described the first port be described in any one at least two ports, and by described the first port, described the first loop detection message is sent to the second equipment, then described the first equipment receives by the second port the message that described the second equipment sends, and judge whether described message is the second loop detection message, LLDPDU in described the second loop detection message comprises that type is the TLV of loop detection, value in described TLV comprises local device mark and first end slogan, described the second port is other arbitrary ports except described the first port in described the first equipment, in the time judging that described message is the second loop detection message, obtain the first end slogan in described the second loop detection message, determine between the first port that described first end slogan is corresponding and described the second port and have loop.The embodiment of the present invention has solved utilizes the non-standard LLDP message that has carried self-defining specific protocol number in prior art, cause conflicting mutually with other self-defining user's messages, or afoul problem in the time carrying out protocol number expansion in the future.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in the embodiment of the present invention be briefly described below, apparently, described accompanying drawing is only some embodiments of the present invention below, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is LLDP message format schematic diagram;
The flow chart of a kind of loop detecting method that Fig. 2 provides for the embodiment of the present invention;
The flow chart of the another kind of loop detecting method that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the structural representation of POE system;
The flow chart of another loop detecting method that Fig. 5 provides for the embodiment of the present invention;
Fig. 6 is the internal virtual structure chart of PD or PSE in prior art;
The structure chart of a kind of network equipment that Fig. 7 provides for the embodiment of the present invention;
The structure chart of the another kind of network equipment that Fig. 8 provides for the embodiment of the present invention;
The structure chart of another network equipment that Fig. 9 provides for the embodiment of the present invention;
The hardware structure diagram of a kind of network equipment that Figure 10 provides for the embodiment of the present invention;
The hardware structure diagram of the another kind of network equipment that Figure 11 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 2, a kind of loop detecting method that the embodiment of the present invention provides, described method comprises the steps:
201, the first equipment sends to the second equipment by the first port by a LLDP message.
Wherein, a LLDP message comprises the first loop detection information, and described the first loop detection information comprises loop detection type, the port numbers of the device identification of the first equipment and the first port.Wherein, the target MAC (Media Access Control) address in a described LLDP message is the MAC Address of described the second equipment, and source MAC is the MAC Address of described the first equipment.
The first equipment and the second equipment are all the equipment in POE system, can be PD or PSE, if the first equipment is PD, the second equipment is PSE accordingly, if the second equipment is PD, the first equipment is PSE accordingly.
Wherein, the first loop detection information can adopt the cell based on TLV formal definition, be for example loop detection by the type definition in the cell of TLV formal definition, represent that described LLDP message is for detection of whether there being loop between the port of described the first equipment, length in the cell of TLV formal definition represents the length of the cell of described TLV formal definition, value in the cell of TLV formal definition comprises the device identification of the first equipment and the port numbers of the first port, the device identification of the first equipment is the unique identification of the first equipment in POE system, described the first port is the port that sends described the first loop detection message, for example, in the time there is two ports in described the first equipment, port one and port 2, send the port-for-port 1 of described the first loop detection message, the first port is port one.
Optionally, a described LLDP message is that described the first equipment generated according to the time interval arranging, and the time for example arranging is 10s, and described the first equipment is according to the time interval 10s arranging, generate a LLDP message, the port in the first equipment is carried out to loop detection.Utilize the time interval arranging to carry out loop detection to the first equipment, and do not need to generate incessantly described the first loop detection message always, save the power consumption of described the first equipment.
In addition, in order to find more quickly the loop in the first device port, also can all send the first loop detection message by each port of described the first equipment, wherein, the port numbers of carrying in the first loop detection message that each port sends is the port numbers of corresponding transmit port.For example, in the time that the first loop detection message will send by port 2, the port numbers of carrying in the first loop detection message is port 2.
202, described the first equipment obtains from the second port and receives the 2nd LLDP message that described the second equipment sends.
Wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port.
Described the 2nd LLDP message comprises the first loop detection information, the LLDPDU that comprises the 2nd LLDP message comprises that type is the TLV of loop detection, value in described TLV comprises the device identification of the first equipment and the port numbers of the first port, and described the second port is other arbitrary ports except described the first port in described the first equipment.Owing to will detecting between the port of described the first equipment whether have loop, check whether the message that other ports except described the first port receive is the 2nd LLDP message, described the 2nd LLDP message, similar with a described LLDP message, just the target MAC (Media Access Control) address in the 2nd LLDP message is the MAC Address of the first equipment, and source MAC is the MAC Address of the second equipment.
203, described the first equipment is determined between described the first port and described the second port and is had loop.
When judging while carrying the first loop detection information in the 2nd LLDP message, illustrate that described the first equipment sends by the first port a LLDP message that includes the first loop detection information, after being received by described the second equipment, through the processing of described the second equipment, the first loop detection information is carried in the 2nd LLDP message, send to again the first equipment, illustrate between the port of described the first equipment and have loop, namely between the first port and the second port, have loop.
Alternatively, after step 203, can also comprise step 204:
Step 204: the first equipment forbids that in described the first port or described the second port one is for message transmission.
Between port due to equipment, exist loop can make some message constantly forward, for example broadcast, causes the waste of bandwidth resources, therefore can adopt some measures, the message transmissions between the port of generation loop is disconnected, only for POE.
The first equipment forbids that in the first port or the second port can disconnect the loop between the first port and the second port for message transmission.
For example, can pass through following manner open-loop:
Mode one: display alarm prompting, there is loop for pointing out between the first port of described the first equipment and the second port in described alarm; Receive configuration-direct, described configuration-direct is used for forbidding that described the first port or described the second port are for message transmission, only for Power over Ethernet POE.According to described configuration-direct, forbid that described the first port or described the second port are for message transmission again.
Can point out and notify user by display alarm, between the first port of the first equipment and the second port, there is loop, and receive the configuration-direct of user for port, described the first port or described the second port blocking are carried out to message transmissions, only for Power over Ethernet POE.
Mode two: initiatively disconnect described the first port or the data link for message transmission corresponding to described the second port.
In the time there is loop between the port on described the first device discovery local device, directly disconnect described the first port or the data link for message transmission corresponding to described the second port that there are loop, only for POE.
If there is not loop between the port of described the first equipment, namely described the first equipment does not receive described the second loop detection message, and described the first equipment is left intact to port one and port 2.
The embodiment of the present invention can realize based on existing LLDP message, to carrying out loop detection between the port of equipment, avoid generating the non-standard LLDP message of self-defining specific protocol number, and cause conflicting mutually with other self-defining user's messages, or afoul problem in the time carrying out protocol number expansion in the future.
Correspondingly, as shown in Figure 3, a kind of loop detecting method that the embodiment of the present invention provides, described method comprises the steps:
301, the second equipment receives the first Link Layer Discovery Protocol data cell LLDP message that the first equipment sends by the first port.
Wherein, a described LLDP message comprises the first loop detection information, and described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port.
Optionally, can receive after message by the 3rd port at the second equipment, judge whether described message is the first loop detection message, described the first loop detection message is the LLDP message that is packaged with LLDPDU, described LLDPDU comprises that type is the TLV of loop detection, value in described TLV comprises the first device identification and first end slogan, described first end slogan is port numbers corresponding to the first port that sends described the first loop detection message, at least there are two ports in described the first equipment, described the first port be described in any one at least two ports, at least there are two ports in described the second equipment, described the 3rd port be described in any one at least two ports, described the 3rd port and described the first direct port connection.
Wherein, in the time that described the first equipment is PD, described the second equipment is PSE, or described the first equipment is while being PSE, and described the second equipment is PD, and described PD and PSE all have at least two ports.
Described the second equipment, after receiving message, first by judging whether the type in the TLV that described message carries is loop detection, thereby judges whether described message is the first loop detection message.Described the first loop detection message is based on existing LLDP message, in LLDPDU in message, carry TLV, wherein the type in TLV is loop detection, represent that described LLDP message is for detection of whether there being loop between the port of described the first equipment, length in TLV represents the length of described TLV, value in TLV comprises the first device identification and first end slogan, described the first device identification is the unique identification of described the first equipment in POE system, described first end slogan is port numbers corresponding to the first port that sends described the first loop detection message, for example, in the time there is two ports in described the first equipment, port one and port 2, described first end slogan is port one or port 2.
302, obtain the first loop detection information in a described LLDP message.
For example: in the time judging that described message is the first loop detection message, obtain described the first loop detection information, comprise the first device identification, first end slogan and the loop detection type in the first loop detection message in the first loop detection information;
303, described the second equipment is according to described the first loop detection Information generation the 2nd LLDP message.
Wherein, described the second loop detection message is LLDP message, and described the 2nd LLDP message comprises the first loop detection information.Such as: described the second loop detection message is the LLDP message that is packaged with LLDPDU, and described LLDPDU comprises that type is the TLV of loop detection, and the value in described TLV comprises the first device identification and first end slogan.
Described the second equipment is in the time judging that described message is the first loop detection message, by obtaining the first device identification and the first end slogan in described the first loop detection message, and the first device identification and first end slogan are carried at and in new LLDP message, send to described the first equipment.Wherein, the TLV that comprises the first device identification and first end slogan is carried in the second loop detection message.
304, described the second loop detection message is sent to described the first equipment by described the second equipment.
Wherein, described the 4th port is other arbitrary ports except described the 3rd port.
Owing to will detecting whether there is loop in POE system, therefore by receiving other ports outside the first loop detection message, described the second loop detection message is sent, by the 4th port, described the second loop detection message is sent to described the first equipment.
The embodiment of the present invention can realize based on existing LLDP message, to carrying out loop detection between the port of equipment, avoid generating the non-standard LLDP message of self-defining specific protocol number, and cause conflicting mutually with other self-defining user's messages, or afoul problem in the time carrying out protocol number expansion in the future.
For ease of understanding, the present invention carries out loop detection to POE system as shown in Figure 4, wherein PD1 represents to exceed the powerful device of IEEE802.3at regulation power, for example micro-base station, PD2 is the low-power equipment that meets IEEE802.3at regulation power, for example, be the low-power equipments such as WLAN AP, microwave, and PSE can be POE switch, when carrying out message transmissions with PD1 and PD2, power.Wherein, solid line represents ethernet line, dotted line represents AC power cord, in the time adopting many netting twines to power to PD1, because netting twine also transmits for data-signal, cause may forming loop in link, therefore in embodiments of the present invention take PD1 as the first equipment, PSE is that the second equipment is example, describe loop detecting method, for ease of understanding, following example only for the purpose of illustration, the present invention is not done to any restriction, wherein, the ports having 1 of PD1 shown in Fig. 4 and port 2, PSE ports having 3 and port 4, port one and port 3 are direct-connected, port 2 and port 4 are direct-connected, as shown in Figure 5, the method comprises the steps:
1, between PD1 and PSE, carry out POE capability negotiation.
With reference to prior art, because PSE is in charge of the parameter such as output power, size of current of PD1, above-mentioned power supply parameter is arranged, and reach two ends when consistent, carry out power supply below.
2, PD1 generates the first loop detection message according to local device mark and first end slogan.
In LLDPDU in described the first loop detection message, carry TLV, wherein the type in TLV is loop detection, represent that described LLDP message is for detection of whether there being loop between the port of described the first equipment, value in TLV comprises local device mark and first end slogan, described local device is designated PD1 device identification, the port numbers that described first end slogan is port one.
3, PD1 sends to PSE by port one by described the first loop detection message.
Wherein, the MAC Address that the target MAC (Media Access Control) address in described the first loop detection message is PSE, the MAC Address that source MAC is PD1.
Optionally, the port numbers that can be also port 2 by described first end slogan, and send to PSE by port 2.
4, PSE receives the first loop detection message by port 3, and judges whether the type in the TLV that message carries is loop detection.
5,, in the time judging that described message is the first loop detection message, PSE obtains PD1 device identification in described the first loop detection message and the port numbers of port one.
6, PSE generates the second loop detection message according to the port numbers of PD1 device identification and port one.
Wherein, the MAC Address that the target MAC (Media Access Control) address in described the second loop detection message is PD1, the MAC Address that source MAC is PSE.
7, described the second loop detection message is sent to PD1 by PSE.
Wherein, owing to only carrying the MAC Address of PD1 in described the second loop detection message, therefore need PSE, by port 4 and port 5, described the second loop detection message is sent to PD1, in the time that PD2 receives described the second loop detection message, directly abandon.
8, PD1 receives the second loop detection message by port 2, and judges the device identification that whether carries PD1 in described message.
9,, in the time judging that described message is the second loop detection message, PD1 obtains the port numbers of the port one in described the second loop detection message.
10, PD1 determines between port one and port 2 and has loop.
PD1 can adopt some measures that the loop between port one and port 2 is disconnected, and described in the mode one and mode two in embodiment, for example, the data link between port 2 and port 4 is disconnected as shown in Figure 2.
In the present embodiment, the first equipment can be also PSE, and the second equipment is PD1, and flow process and Fig. 5 of carrying out loop detection are similar, just repeat no more here.
In addition, in prior art, for all there being structure chart as shown in Figure 6 in PD and PSE, describe as an example of PD1 example, described PD comprises application module, LLDP administration module, management information library module, LLDP Agent module, port one and port 2.Wherein, LLDP Agent module reports LLDP administration module by message after receiving message by port one or port 2.LLDP administration module is in charge of LLDP agreement and the local information of equipment, for example device identification and port numbers.LLDP administration module is also responsible for the opposite equip. receiving, and namely the information of PSE deposits management information bank in, inquires about for application module.Wherein, complete the loop detection flow process shown in Fig. 5 by LLDP administration module, and testing result is reported to application module, in the time there is loop, application module will display alarm prompting be notified user, and receive user's configuration, or automatically disconnect a wherein link for transfer of data, only for POE.
The embodiment of the present invention provides a kind of network equipment 70, as shown in Figure 7, comprising:
Transmitting element 71, for the first Link Layer Discovery Protocol data cell LLDP message being sent to the second equipment by the first port, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Acquiring unit 72, receives for obtaining from the second port the 2nd LLDP message that described the second equipment sends, and wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port;
Determining unit 73, determines between described the first port and described the second port and has loop for described the first equipment.
A kind of network equipment that the embodiment of the present invention provides, generate the first loop detection message according to local device mark and first end slogan, described the first loop detection message comprises Link Layer Discovery Protocol data cell LLDPDU, described LLDPDU comprises that type is the type lengths values TLV of loop detection, value in described TLV comprises local device mark and first end slogan, described first end slogan is the port numbers corresponding to the first port of described the first loop detection message to be sent, at least there are two ports in described the first equipment, described the first port be described in any one at least two ports, and by described the first port, described the first loop detection message is sent to the second equipment, then receive by the second port the message that described the second equipment sends, and judge whether described message is the second loop detection message, LLDPDU in described the second loop detection message comprises that type is the TLV of loop detection, value in described TLV comprises local device mark and first end slogan, described the second port is other arbitrary ports except described the first port in described the first equipment, in the time judging that described message is the second loop detection message, obtain the first end slogan in described the second loop detection message, determine between the first port that described first end slogan is corresponding and described the second port and have loop.The embodiment of the present invention has solved utilizes the non-standard LLDP message that has carried self-defining specific protocol number in prior art, cause conflicting mutually with other self-defining user's messages, or afoul problem in the time carrying out protocol number expansion in the future.
Optionally, described generation unit, also for the time interval according to arranging, generates the first loop detection message according to local device mark and first end slogan.
Further, as shown in Figure 8, in the network equipment 70, can also comprise:
Generation unit 74, for generating a described LLDP message according to the time interval arranging.
Control unit 75, for after determining in described determining unit and having loop between described the first port and described the second port, forbids that in described the first port or described the second port one is for message transmission.
Optionally, described control unit 75 comprises:
Show subelement 751, for display alarm prompting, described alarm is used for pointing out between described the first port and described the second port and has loop;
Receive subelement 752, for receiving configuration-direct, described configuration-direct is used for forbidding that described the first port or described the second port are for message transmission;
Port limit subelement 753, also, for according to described configuration-direct, forbids that described the first port or described the second port are for message transmission.
Wherein, if described the first equipment is receiving end equipment PD, described the second equipment is feeder ear equipment PSE; If or described the first equipment is PSE, described the second equipment is PD.
Correspondingly, the embodiment of the present invention also provides a kind of network equipment 90, as shown in Figure 9, comprising:
Receiving element 91, the the first Link Layer Discovery Protocol data cell LLDP message sending by the first port for receiving the first equipment, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Acquiring unit 92, for obtaining the first loop detection information of a described LLDP message;
Generation unit 93, for described the second equipment, according to described the first loop detection Information generation the 2nd LLDP message, described the 2nd LLDP message comprises the first loop detection information;
Transmitting element 94, for sending to described the first equipment by described the second loop detection message.
Wherein, if described the first equipment is receiving end equipment PD, described the second equipment is feeder ear equipment PSE; If or described the first equipment is PSE, described the second equipment is PD.
The embodiment of the present invention provides a kind of network equipment, receive message by the 3rd port, and judge whether described message is the first loop detection message, described the first loop detection message is the LLDP message that is packaged with LLDPDU, described LLDPDU comprises that type is the TLV of loop detection, value in described TLV comprises the first device identification and first end slogan, described first end slogan is port numbers corresponding to the first port that sends described the first loop detection message, at least there are two ports in described the first equipment, described the first port be described in any one at least two ports, at least there are two ports in described the second equipment, described the 3rd port be described in any one at least two ports, described the 3rd port and described the first direct port connection, in the time judging that described message is the first loop detection message, the first device identification and the first end slogan that obtain in described the first loop detection message generate the second loop detection message according to described the first device identification and first end slogan, described the second loop detection message is the LLDP message that is packaged with LLDPDU, described LLDPDU comprises that type is the TLV of loop detection, value in described TLV comprises the first device identification and first end slogan, by the 4th port, described the second loop detection message is sent to described the first equipment, described the 4th port is other arbitrary ports except described the 3rd port.The embodiment of the present invention has solved utilizes the non-standard LLDP message that has carried self-defining specific protocol number in prior art, cause conflicting mutually with other self-defining user's messages, or afoul problem in the time carrying out protocol number expansion in the future.
The specific implementation process of the each unit in the described network equipment 90, can be referring to the processing procedure of above-mentioned loop detecting method.
The network equipment shown in above-mentioned Fig. 7 and Fig. 8 can be realized based on hardware configurations such as computers, and as shown in figure 10, the hardware configuration of the network equipment 10 comprises memory 1001, communication port 1002 and processor 1003.
Wherein, memory 1001 can be read-only memory (Read Only Memory, ROM), static storage device, dynamic memory or random access memory (Random Access Memory, RAM).Memory 1001 can storage operation system and instruction and the application data of other application programs.In memory 1001, the instruction of storage moves execution by processor 1003.
In the embodiment of the present invention memory 1001 can be used for storage realize Fig. 7 and embodiment illustrated in fig. 8 in instruction and the message of each functional unit.
Communication port 1002 is used for realizing communicating by letter between the network equipment 10 and other equipment.
In the embodiment of the present invention, communication port 1002 is for sending and receiving message.
Processor 1003 can adopt general central processing unit (Central Processing Unit, CPU), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, for carrying out relative program.
In the embodiment of the present invention, processor 1003, for the instruction of execute store 1001, is specifically carried out:
By the first port, the first Link Layer Discovery Protocol data cell LLDP message is sent to the second equipment, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Described the first equipment obtains from the second port and receives the 2nd LLDP message that described the second equipment sends, and wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port;
Described the first equipment is determined between described the first port and described the second port and is had loop.
Wherein, the concrete processing procedure in processor 1003 can reference method embodiment part and Fig. 7 and Fig. 8 shown in device embodiment part, repeat no more here.
The network equipment shown in above-mentioned Fig. 9 can be realized by computer based hardware configuration, and as shown in figure 11, the hardware configuration of the network equipment 11, comprises memory 1101, communication port 1102 and processor 1103.
Wherein, memory 1101 can be read-only memory (Read Only Memory, ROM), static storage device, dynamic memory or random access memory (Random Access Memory, RAM).Memory 1101 can storage operation system and instruction and the application data of other application programs.In memory 1101, the instruction of storage moves execution by processor 1103.
In the embodiment of the present invention memory 1101 can be used for storage realize embodiment illustrated in fig. 9 in instruction and the message of each functional unit.
In the embodiment of the present invention, communication port 1102 is for sending and receiving message;
In the embodiment of the present invention, processor 1103, for the instruction of execute store 1101, is specifically carried out:
Receive the first Link Layer Discovery Protocol data cell LLDP message that the first equipment sends by the first port, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Obtain the first loop detection information in a described LLDP message;
According to described the first loop detection Information generation the 2nd LLDP message, described the 2nd LLDP message comprises the first loop detection information;
Described the second loop detection message is sent to described the first equipment.
Wherein, the concrete processing procedure in processor 1103 can reference method embodiment part and Fig. 9 shown in device embodiment part, repeat no more here.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can above-mentioned functions be distributed and completed by different functional modules as required, be divided into different functional modules by the internal structure of device, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.
In the several embodiment that provide in the application, should be understood that, disclosed system, apparatus and method, can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described module or unit, be only that a kind of logic function is divided, when actual realization, can have other dividing mode, for example multiple unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized and during as production marketing independently or use, can be stored in a computer read/write memory medium using the form of SFU software functional unit.Based on such understanding, the all or part of of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) or processor (processor) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (21)
1. a loop detecting method, is characterized in that, comprising:
The first equipment sends to the second equipment by the first port by the first Link Layer Discovery Protocol data cell LLDP message, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Described the first equipment obtains from the second port and receives the 2nd LLDP message that described the second equipment sends, and wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port;
Described the first equipment is determined between described the first port and described the second port and is had loop.
2. loop detecting method according to claim 1, is characterized in that, a described LLDP message is
Described the first equipment generated according to the time interval arranging.
3. according to the loop detecting method described in claim 1 or 2, it is characterized in that, there is loop between described definite described the first port and described the second port after, described method also comprises:
The first equipment forbids that described the first port or described the second port are for message transmission.
4. loop detecting method according to claim 3, is characterized in that, described the first equipment forbids that described the first port or described the second port comprise for message transmission:
Described the first equipment display alarm prompting, described alarm is used for pointing out between described the first port and described the second port and has loop;
Described the first equipment receives configuration-direct, and described configuration-direct is used for forbidding that described the first port or described the second port are for message transmission;
Described the first equipment, according to described configuration-direct, forbids that described the first port or described the second port are for message transmission.
5. according to the loop detecting method described in any one in claim 1-4, it is characterized in that, if described the first equipment is receiving end equipment PD, described the second equipment is feeder ear equipment PSE;
If or described the first equipment is PSE, described the second equipment is PD.
6. a loop detecting method, is characterized in that, comprising:
The second equipment receives the first Link Layer Discovery Protocol data cell LLDP message that the first equipment sends by the first port, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Obtain the first loop detection information in a described LLDP message;
Described the second equipment is according to described the first loop detection Information generation the 2nd LLDP message, and described the 2nd LLDP message comprises the first loop detection information;
Described the second loop detection message is sent to described the first equipment by described the second equipment.
7. loop detecting method according to claim 6, is characterized in that, if described the second equipment is feeder ear equipment PSE, described the first equipment is receiving end equipment PD;
If or described the second equipment is PD, described the first equipment is PSE.
8. a network equipment, is characterized in that, comprising:
Transmitting element, for the first Link Layer Discovery Protocol data cell LLDP message being sent to the second equipment by the first port, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Acquiring unit, receives for obtaining from the second port the 2nd LLDP message that described the second equipment sends, and wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port;
Determining unit, determines between described the first port and described the second port and has loop for described the first equipment.
9. the network equipment according to claim 8, is characterized in that, also comprises: generation unit, and for generating a described LLDP message according to the time interval arranging.
10. the network equipment according to claim 8 or claim 9, is characterized in that, also comprises:
Control unit, for after determining in described determining unit and having loop between described the first port and described the second port, forbids that in described the first port or described the second port one is for message transmission.
11. network equipments according to claim 10, is characterized in that, described control unit comprises:
Show subelement, for display alarm prompting, described alarm is used for pointing out between described the first port and described the second port and has loop;
Receive subelement, for receiving configuration-direct, described configuration-direct is used for forbidding that described the first port or described the second port are for message transmission;
Port limit subelement, also, for according to described configuration-direct, forbids that described the first port or described the second port are for message transmission.
The network equipment in 12. according to Claim 8 to 11 described in any one, is characterized in that, if described the first equipment is receiving end equipment PD, described the second equipment is feeder ear equipment PSE; If or described the first equipment is PSE, described the second equipment is PD.
13. 1 kinds of network equipments, is characterized in that, comprising:
Receiving element, the the first Link Layer Discovery Protocol data cell LLDP message sending by the first port for receiving the first equipment, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Acquiring unit, for obtaining the first loop detection information of a described LLDP message;
Generation unit, for described the second equipment, according to described the first loop detection Information generation the 2nd LLDP message, described the 2nd LLDP message comprises the first loop detection information;
Transmitting element, for sending to described the first equipment by described the second loop detection message.
14. network equipments according to claim 13, is characterized in that, if described the second equipment is feeder ear equipment PSE, described the first equipment is receiving end equipment PD; If or described the second equipment is PD, described the first equipment is PSE.
15. 1 kinds of network equipments, is characterized in that, comprising:
Memory, for storing software program and message;
Communication port, for sending and receiving message;
Processor, for the software program of execute store, specifically carry out:
By the first port, the first Link Layer Discovery Protocol data cell LLDP message is sent to the second equipment, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Described the first equipment obtains from the second port and receives the 2nd LLDP message that described the second equipment sends, and wherein, described the 2nd LLDP message comprises described the first loop detection information, and described the second port is the port different from described the first port;
Described the first equipment is determined between described the first port and described the second port and is had loop.
16. network equipments according to claim 15, is characterized in that, described processor, also for carrying out:
The time interval according to setting generates a described LLDP message.
17. according to the network equipment described in claim 15 or 16, it is characterized in that, and there is loop between the first port corresponding to described definite described first end slogan and described the second port after, described processor, also for carrying out:
Forbid that in described the first port or described the second port one is for message transmission.
18. network equipments according to claim 7, is characterized in that, described processor, specifically for carrying out:
Display alarm prompting, described alarm is used for pointing out between described the first port and described the second port and has loop;
Receive configuration-direct, described configuration-direct is used for forbidding that described the first port or described the second port are for message transmission;
According to described configuration-direct, forbid that described the first port or described the second port are for message transmission.
19. according to claim 15 to the network equipment described in any one in 18, it is characterized in that, if described the first equipment is receiving end equipment PD, described the second equipment is feeder ear equipment PSE; If or described the first equipment is PSE, described the second equipment is PD.
20. 1 kinds of network equipments, is characterized in that, comprising:
Memory, for storing software program and message;
Communication port, for sending and receiving message;
Processor, for the software program of execute store, specifically carry out:
Receive the first Link Layer Discovery Protocol data cell LLDP message that the first equipment sends by the first port, wherein, a described LLDP message comprises the first loop detection information, described the first loop detection information comprises loop detection type, the port numbers of the device identification of described the first equipment and described the first port;
Obtain the first loop detection information in a described LLDP message;
According to described the first loop detection Information generation the 2nd LLDP message, described the 2nd LLDP message comprises the first loop detection information;
Described the second loop detection message is sent to described the first equipment.
21. network equipments according to claim 20, is characterized in that, if described the second equipment is feeder ear equipment PSE, described the first equipment is receiving end equipment PD; If or described the second equipment is PD, described the first equipment is PSE.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/084834 WO2015051493A1 (en) | 2013-10-08 | 2013-10-08 | Loop detection method and apparatus |
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| Publication Number | Publication Date |
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| CN103858388A true CN103858388A (en) | 2014-06-11 |
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|---|---|---|---|
| CN201380001520.8A Pending CN103858388A (en) | 2013-10-08 | 2013-10-08 | Loop detection method and apparatus |
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| WO (1) | WO2015051493A1 (en) |
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