CN108566326A - It is a kind of industry looped network fault detect and restorative procedure - Google Patents
It is a kind of industry looped network fault detect and restorative procedure Download PDFInfo
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- CN108566326A CN108566326A CN201810178974.7A CN201810178974A CN108566326A CN 108566326 A CN108566326 A CN 108566326A CN 201810178974 A CN201810178974 A CN 201810178974A CN 108566326 A CN108566326 A CN 108566326A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
- H04L41/0661—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities by reconfiguring faulty entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/55—Prevention, detection or correction of errors
- H04L49/557—Error correction, e.g. fault recovery or fault tolerance
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Abstract
Present invention is disclosed a kind of fault detect of industrial looped network and restorative procedures, industrial looped network includes the network equipment of multiple physics cyclization that link together, after each network equipment starts, it is initialized by looped network, set one of maximum network equipment of NIC address port looped network state to blocked state, after the completion of initialization, if detecting network equipment port disconnection, by the port, looped network state is set as disabled status, and set the port in blocked state to forwarding state, each network equipment by heartbeat machine contracting system judgment method and send loopback message method judge adjacent network device whether failure, if hair conventional network equipment breaks down, then set the port looped network state being connected with the network equipment to break down to blocked state immediately, and set the port in blocked state to forwarding state.The fault detect of the industrial looped network of the present invention and restorative procedure can make to restore to avoid failed switches or faulty link as early as possible, restore communication again to reduce loss.
Description
Technical field
The present invention relates to a kind of fault detect of industrial looped network and restorative procedures.
Background technology
The looped network principle of work and power of applicable industry ethernet switch is mostly to detect looped network port status, i.e. port Up, Down
Init state to complete looped network is arranged, and sets its looped network state to Down in the member port link Down of looped network
And by the other members of this event notification looped network, one side subsequent communications avoid the link of this disconnection；In addition, other before will be in
The port of Block states is set as Forward states to complete convergence function again.
But the recovery and convergent scheme for carrying out looped network state as trigger point using port links state change merely exist
There are problems that obvious shortcoming in some cases, for example, when interchanger exchange chip or looped network port break down (as exchanged
Indirect fiber termination box of machine, fused fiber splice problem) lead to not forwarding data frame, but the link state of port at this time is still normal,
In this case, neighbours' ring exchanger can not lead to certain friendships by the link state event perception of port to such case
The communication changed planes is interrupted and can not be restored in the case of no human intervention completely.
Invention content
It is an object of the invention in view of the above-mentioned drawbacks in the prior art, provide a kind of fault detect of industrial looped network and
Restorative procedure, what this method can be as fast as possible avoids failed switches or faulty link, reselects link to extensive as early as possible
Multiple communication is influenced and is lost caused by communicating interrupt to reduce.
For achieving the above object, present invention employs following technical solutions：It is a kind of industry looped network fault detect and
Restorative procedure, the industry looped network include it is multiple link together, the physically network equipment circlewise, the industry looped network
Fault detect and restorative procedure include the following steps：
S1：After each network equipment starts, two ports of each network equipment are disposed as disabled status first；
S2：Looped network initialization is carried out to each network equipment, process includes：
The physical state of each network equipment looped network member port is detected, according to testing result, to each network equipment end
The looped network state of mouth re-starts setting, and method is as follows：
S2.1：If the physical state for detecting network equipment looped network member port is off-state, it is not processed；
S2.2：If the physical state for detecting network equipment looped network member port is connection status, and the port is the
When the port of one connection status, then port status is set to forwarding state, if the port is second connection status
Port then sets port status to blocked state, then by comparing the method for NIC address, by the maximum net of NIC address
One of network equipment port looped network state is set as blocked state；
S3：After the completion of looped network initialization, when the physical state for being detected with network equipment looped network member port is to disconnect shape
When state, by the port, looped network state is set as disabled status immediately, and the event is noticed in looped network, other to receive this
The event and network equipment for having port to be in blocked state immediately opens its own port blocked, is set as forwarding state；
S4：After the completion of looped network initialization, when the physical state for detecting network equipment looped network member port is connection status
When, the network equipment judges whether to send loopback message to the adjacent network equipment by heartbeat machine contracting system judgment method；
S5：If desired send loopback message, the network equipment sent according to loopback message after feedback result, make it is as follows
Processing：
S5.1：If after sending, the loopback message of itself transmission capable of being received from another port, is disregarded；
S5.2：If after sending, the loopback message of itself transmission cannot being received from another port, then sends loopback report
The network equipment of text sets the port that itself connect with the dont answer network equipment to blocked state, and by this event in looped network
Notice, other network equipments for receiving this event and having port to be in blocked state immediately open its own port blocked,
It is set as forwarding state；
S6：If loopback message need not be sent, do not deal with.
In addition, the present invention also proposes following attached technical scheme：
The relatively method of NIC address includes：By two looped network member ports of each network equipment into looped network
Each port Broadcast Port of other network equipments is the message of connection status, and it is connection status that other network equipments, which receive port,
After message, by the NIC address of transmitting terminal compared with the NIC address of itself, and the port ring of itself is adjusted according to comparison result
Net state.
The process of the port looped network state that itself is adjusted according to comparison result includes：
If 1), the NIC address of transmitting terminal is bigger than itself NIC address, its own is in the port of blocked state
It opens, is set as forwarding state；
2), if the NIC address of transmitting terminal is smaller than itself NIC address, do not deal with；
If 3), the NIC address of transmitting terminal is equal to itself NIC address, other network equipment looped networks in looped network are notified
State is completed.
The heartbeat machine contracting system judgment method includes：Each network equipment is periodically sent to the adjacent network equipment
Heartbeat packet message shows its normal operation, disregards if the adjacent network equipment gives response after receiving heartbeat packet message,
If continuous N number of heartbeat packet time-out dont answer sends a loopback message from port to the dont answer network equipment.
The network equipment includes interchanger.
The heartbeat packet includes multicast message.
Compared with the prior art, the advantage of the invention is that：The fault detect and reparation of industry looped network provided by the invention
Method, the interchanger in looped network occur having other network communication apparatus to break down in certain failure and specials or looped network
What either communication link can be as fast as possible in the case of disconnecting avoids failed switches or faulty link, reselects link
It influences and loses caused by communicating interrupt to reduce to restore communication as early as possible.
Description of the drawings
Fig. 1 be the present invention industrial looped network in the initialization of each network equipment looped network flow chart；
Fig. 2 is the schematic diagram of industrial looped network in the embodiment of the present invention；
Fig. 3 is the schematic diagram for respectively having in industrial looped network in the embodiment of the present invention network equipment failure.
Specific implementation mode
The present invention basic thought be：It is detected in conjunction with heartbeat detection and link state, a kind of simple and effective industry is provided
The fault detect of looped network and restorative procedure.
Technical solution of the present invention is further non-limitingly described in detail below in conjunction with preferred embodiment and its attached drawing.
Fig. 1 be the present invention industrial looped network in the initialization of each network equipment looped network flow chart, industrial looped network includes multiple
It links together, physically the network equipment circlewise, referring to Fig. 1, after all-network equipment all starts, industrial looped network carries out
Fault detect and reparation, method are as follows：
S1：After each network equipment starts, it temporarily sets two ports of each network equipment to disabled status (i.e. first
Disable states)；
S2：Each network equipment row looped network is initialized, process includes：Detect the physics of each looped network member port of the network equipment
State re-starts setting, method is as follows to the looped network state of each network equipment port according to testing result：
S2.1：If the physical state for detecting network equipment looped network member port is off-state (i.e. Down state),
It is not processed.
S2.2：If the physical state for detecting network equipment looped network member port is connection status (i.e. Up states), and
When the port is the port of first connection status, then port status is set to forwarding state, if the port is second
The port of connection status then sets port status to blocked state, then by comparing the method for the addresses mac, by the addresses mac
One of maximum network equipment port looped network state is set as blocked state (i.e. Block), compares the side of NIC address
Method is as follows：
Each port Broadcast Port by the other network equipments of from two looped network member ports to looped network is connection status
(Link-Up) message, after other network equipments receive the message of port Link-Up, by the addresses mac of transmitting terminal and itself
The addresses mac are compared, and the port looped network state of itself is adjusted according to comparison result, and process is as follows：
1), if the addresses mac of transmitting terminal are bigger than itself address mac, the port that its own is in Block states is beaten
It opens, is set as Forward states；
2), if the addresses mac of transmitting terminal are smaller than itself address mac, do not deal with；
If 3), the addresses mac of transmitting terminal be equal to itself address mac, indicate looped network initialization complete, notice looped network in its
He completes network equipment looped network state.(note：The addresses mac of transmitting terminal are equal to itself address mac and illustrate that having received oneself sends out
(looped network in around one circle) Link-Up message, show that the ports Block of other network equipments looped network Nei all have been set to
Forward states also illustrate that itself mac is the maximum addresses mac in looped network, the port status of its script Block remains unchanged,
Only this port is in Block states in looped network at this time, and looped network initialization is completed).
S3：After the completion of looped network initialization, when the physical state for detecting network equipment looped network member port is Down shapes
After state, the port looped network state which is related to equipment immediately is set as Disable states, and the event is carried out in looped network
Notice, other network equipments for receiving the event and having port to be in Block states immediately open its own port blocked,
It is set as Forward states.
S4：After the completion of looped network initialization, when the physical state for detecting network equipment looped network member port is connection status
When, the network equipment judges whether to send loopback message, the side of judgement to the adjacent network equipment by heartbeat machine contracting system judgment method
Method is as follows：
Each network equipment periodically sends heartbeat packet message to the adjacent network equipment, and heartbeat packet is multicast message, if
Adjacent interchanger gives response after receiving heartbeat packet message, shows its normal operation, disregards；If continuous N number of heartbeat packet
Overtime dont answer then sends a loopback message from port to the interchanger of dont answer；
S5：If desired send loopback message, the network equipment sent according to loopback message after feedback result, make it is as follows
Processing：
S5.1：If after sending, the loopback message of itself transmission can be received from another port, showing its operation just
Often, it disregards；(since data are forwarded by pure hardware, it is also possible to there are the continuous N number of heartbeat packet dont answers of neighbouring device, but
The case where can still provide for normal data forwarding, so even if N number of heartbeat packet dont answer, but the loopback message sent can be from another
Single port receives, then illustrates that neighbouring device can still provide for data forwarding, then disregard.)
S5.2：If after sending, the loopback message of itself transmission cannot be received from another port, show that event occurs in it
Barrier, the then network equipment for sending loopback message set the port that itself connect with the dont answer network equipment to Block states, and
This event is noticed in looped network, other network equipments for receiving this event and thering is port to be in blocked state immediately by its from
Body port blocked is opened, and Forward states are set as.
S6：If loopback message need not be sent, do not deal with.
Fig. 2 is the schematic diagram of industrial looped network in the embodiment of the present invention, and the wherein network equipment is by taking interchanger as an example, interchanger
SW1, SW2, SW3, SW4, SW5 and SW6 physically constitute a ring, and wherein interchanger SW1 includes port P1.1 and P1.2, exchange
Machine SW2 include port P2.1 and P2.2, interchanger SW3 include port P3.1 and P3.2, interchanger SW4 include port P4.1 and
P4.2, interchanger SW5 include that port P5.1 and P5.2, interchanger SW6 include port P6.1 and P6.2, set and hand in the present embodiment
Change planes SW4 NIC address (i.e. the addresses mac) be maximum.
With further reference to Fig. 2, after each interchanger starts, first temporarily set two ports of each interchanger to
Disable states, i.e., by P1.1, P1.2, P2.1, P2.2, P3.1, P3.2, P4.1, P4.2, P5.1, P5.2, P6.1 and P6.2
Disable states are temporarily set as, looped network initialization then is carried out to each interchanger, detects each interchanger looped network member port
Physical state, if detect interchanger looped network member port physical state be Down states, be not processed, if detecting
The physical state of interchanger looped network member port is Up states, and when the port is the port of first Up state, then should
Port looped network state is set as Forward states, if the port is the port of second connection status, by the port looped network
State is temporarily set as Block states, by taking interchanger SW1 as an example, it is assumed that P1.1 is the port of first Up detected, P1.2
It is the port of second Up detected, then sets P1.1 to Forward states, sets P1.2 to Block states, then
Pass through each port Broadcast Port of the other interchangers (SW2, SW3, SW4, SW5, SW6) of port P1.1 and P1.2 into looped network
The message of Link-Up, after each ports (SW2, SW3, SW4, SW5, SW6) of other interchangers receives the message of port Link-Up,
The addresses mac of transmitting terminal are compared with the addresses mac of itself, if the addresses mac of transmitting terminal are bigger than itself address mac,
The port that its own is then in Block states is opened, and Forward states is set as, if the addresses mac of transmitting terminal are than itself
The addresses mac are small, then do not deal with, if the addresses mac of transmitting terminal are equal to itself address mac, indicate that looped network initialization is completed, notice
Other network equipment looped network states are completed in looped network.
Since the addresses mac of setting interchanger SW4 are maximum, by multiple Broadcast Port Link-Up message and into
The addresses row mac relatively after, final interchanger SW4's is not opened in the port of blocked state, looped network state still in
Block states, and being opened in the port of blocked state for other interchangers, are set as Forward states, at this time looped network
Initialization.
With reference to Fig. 3, after the physical state of the looped network member port of interchanger SW2 is Down, adjacent interchanger or from
After body detects that the physical state of the looped network member port of interchanger SW2 is Down, immediately by the port looped network shape of interchanger SW2
State is set as Disable states, and the event is noticed in looped network, after interchanger SW4 receives the event, immediately by it
Itself port blocked is opened, and Forward states are set as.
With further reference to Fig. 3, if either looped network port P2.1 breaks down or hands over ring exchanger SW2 exchange chips
It changes planes and has been also connected with optical fiber box (not shown) among SW1 (or SW3) and SW2, fused fiber splice goes wrong, can not be from this looped network
Port forward data, but port status and it is uninfluenced (i.e. the physical state of port P2.1 is still Up states, but its at this time without
Method forwards data), and neighbor switch SW1 (or SW3) is periodically sent to interchanger SW2 by port P1.1 (or P3.1)
Heartbeat packet after continuous N number of heartbeat packet (dotted line 1-3 in figure) time-out is unresponsive, then from port P1.1 (or P3.1) sends a ring
Return is literary (arrow line 4 in figure), if can finally receive the message of itself transmission at port P1.2 (or P3.2), shows to exchange
Machine SW2 may be only that CPU is hung extremely, and exchange chip forwarding is normal, is disregarded to such case, if cannot be in port
P1.2 (or P3.2) receives the message of itself transmission, then sets the port P2.1 of interchanger SW2 to Block states, and by this
Event is noticed in looped network, and interchanger SW4 opens the port for being in Block states before after receiving this event, is set as
Forward states, to restore to communicate.Later, interchanger SW1 (or SW3) confirms the event of interchanger SW2 yet by heartbeat machine contracting system
The convergence for the retaining ring net state that (changes port or restarting equipment etc.) whether barrier restores.But should be noted that only and failure
The connected interchanger of interchanger just can detect mechanism by neighbours and perceive this kind of situation, and other interchangers are unaffected.
The fault detect of industry looped network provided by the invention and restorative procedure, it is certain special that the interchanger in looped network occurs
Failure either has in looped network other network communication apparatus to break down or in the case that communication link disconnects, can be as far as possible
Fast avoids failed switches or faulty link, reselects link to restore communication as early as possible to reduce because communicating interrupt is made
At influence and loss.
It is pointed out that the technical concepts and features of above-mentioned preferred embodiment only to illustrate the invention, its object is to
Those skilled in the art can understand the contents of the present invention and implements according to this, and the protection of the present invention can not be limited with this
Range.Any equivalent change or modification in accordance with the spirit of the invention should be covered by the protection scope of the present invention.
Claims (6)
1. it is a kind of industry looped network fault detect and restorative procedure, it is described industry looped network include it is multiple link together, physically
The network equipment circlewise, it is characterised in that the fault detect of the industry looped network and restorative procedure include the following steps：
S1：After each network equipment starts, two ports of each network equipment are disposed as disabled status first；
S2：Looped network initialization is carried out to each network equipment, process includes：
The physical state for detecting each network equipment looped network member port, according to testing result, to each network equipment port
Looped network state re-starts setting, and method is as follows：
S2.1：If the physical state for detecting network equipment looped network member port is off-state, it is not processed；
S2.2：If the physical state for detecting network equipment looped network member port is connection status, and the port is first
When the port of connection status, then port status is set to forwarding state, if the port is the port of second connection status,
It then sets port status to blocked state, then by comparing the method for NIC address, the maximum network of NIC address is set
One of standby port looped network state is set as blocked state；
S3：After the completion of looped network initialization, when the physical state for being detected with network equipment looped network member port is off-state,
By the port, looped network state is set as disabled status immediately, and the event is noticed in looped network, other to receive the event
And there is the network equipment that port is in blocked state immediately to open its own port blocked, be set as forwarding state；
S4：After the completion of looped network initialization, when the physical state for detecting network equipment looped network member port is connection status, net
Network equipment judges whether to send loopback message to the adjacent network equipment by heartbeat machine contracting system judgment method；
S5：If desired send loopback message, the network equipment sent according to loopback message after feedback result, make following place
Reason：
S5.1：If after sending, the loopback message of itself transmission capable of being received from another port, is disregarded；
S5.2：If after sending, the loopback message of itself transmission cannot being received from another port, then sends loopback message
The network equipment sets the port that itself connect with the dont answer network equipment to blocked state, and this event is led in looped network
It accuses, other network equipments for receiving this event and having port to be in blocked state immediately open its own port blocked, if
It is set to forwarding state；
S6：If loopback message need not be sent, do not deal with.
2. fault detect and the restorative procedure of industry looped network according to claim 1, it is characterised in that：The relatively network interface card
The method of address includes：
Each port Broadcast Port by the other network equipments of from the two looped network member ports of each network equipment to looped network is
The message of connection status, after other network equipments receive the message that port is connection status, by the NIC address of transmitting terminal and certainly
The NIC address of body compares, and the port looped network state of itself is adjusted according to comparison result.
3. fault detect and the restorative procedure of industry looped network according to claim 2, it is characterised in that：It is described according to comparing
As a result the process for adjusting the port looped network state of itself includes：
If 1), the NIC address of transmitting terminal is bigger than itself NIC address, the port that its own is in blocked state is opened,
It is set as forwarding state；
2), if the NIC address of transmitting terminal is smaller than itself NIC address, do not deal with；
If 3), the NIC address of transmitting terminal is equal to itself NIC address, other network equipment looped network states in looped network are notified
It completes.
4. fault detect and the restorative procedure of industry looped network according to claim 1, it is characterised in that：The heartbeat chartered plane
Judgment method processed includes：
Each network equipment periodically sends heartbeat packet message to the adjacent network equipment, if the adjacent network equipment receives
Give response after heartbeat packet message, show its normal operation, disregard, if continuous N number of heartbeat packet time-out dont answer, from end
Mouth sends a loopback message to the dont answer network equipment.
5. fault detect and the restorative procedure of industry looped network according to claim 1, it is characterised in that：The network equipment
Including interchanger.
6. fault detect and the restorative procedure of industry looped network according to claim 1, it is characterised in that：The heartbeat packet packet
Include multicast message.
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| CN110602339B (en) * | 2019-08-29 | 2021-04-20 | 深圳震有科技股份有限公司 | Fault detection method, system and storage medium based on voice gateway |
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