CN106301997A - Gateway device response to network connectedness method and apparatus - Google Patents
Gateway device response to network connectedness method and apparatus Download PDFInfo
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- CN106301997A CN106301997A CN201510369825.5A CN201510369825A CN106301997A CN 106301997 A CN106301997 A CN 106301997A CN 201510369825 A CN201510369825 A CN 201510369825A CN 106301997 A CN106301997 A CN 106301997A
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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
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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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
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Abstract
The invention discloses a kind of gateway device response to network connectedness method, when receiving control protocol message i.e. icmp message between the net that terminal sends, line card obtains ip address, source and the purpose ip address of described icmp message；Mate with the ip address of the gateway device at its place in described purpose ip address, and when ip address, described source is mated with the IP address in the routing table of described gateway device, described line card generates response icmp message based on described icmp message；Described line card feeds back described response icmp message to described terminal.The invention also discloses a kind of gateway device response to network connectivity means.The present invention improves the speed of gateway device response terminal ping request.
Description
Technical field
The present invention relates to computer communication field, particularly relate to a kind of gateway device response to network connectedness side
Method and device.
Background technology
Network connectivty detection technique ping technology is a kind of skill connective for test network in ip network
Art.Gateway device currently as operator or enterprise data center is essentially all by master control and line card group
Becoming, gateway device, when receiving the ping request that terminal sends, is essentially all and is obtained eventually by line card
The control protocol message icmp message of end, then the icmp message got is reported entering of master control by line card
Row processes, and when great amount of terminals user ping gateway device simultaneously, and other protocol massages is also in master control
During process, the master control utilization rate of gateway device can raise, and causes master control to process the overlong time of icmp message,
The time of response terminal ping request also extends, thus reduces gateway device response terminal ping request
Speed.
Summary of the invention
Present invention is primarily targeted at a kind of gateway device response to network connectedness method and apparatus of proposition,
When aiming to solve the problem that great amount of terminals user ping gateway device simultaneously, gateway device response terminal ping request
The technical problem that speed is low.
For achieving the above object, a kind of gateway device response to network connectedness method that the present invention provides, institute
State gateway device response to network connectedness method to comprise the following steps:
When receiving control protocol message i.e. icmp message between the net that terminal sends, line card obtains described
The ip address, source of icmp message and purpose ip address；
Mate with the ip address of the gateway device at its place in described purpose ip address, and ip address, described source
When mating with the IP address in the routing table of described gateway device, described line card is raw based on described icmp message
Become response icmp message；
Described line card feeds back described response icmp message to described terminal.
Preferably, the step that described line card generates response icmp message based on described icmp message includes:
Whether described line card calculates the verification of described icmp message and and judges described verification and be 0；
If described verification and be 0, described line card exchanges ip address, source and purpose ip of described icmp message
Address；
Described line card calculate exchange icmp heading in the icmp message behind ip address verification and, and will
The position that verification after calculating is corresponding with being written to icmp heading；
Described line card calculate whole icmp message verification and, and will calculate after verification and be written to icmp
The position that message is corresponding；
Described line card using the mac address of the described network equipment as mac address, source and by described terminal pair
The mac address answered is as purpose mac address, and is encapsulated in mac address, described source and purpose mac address
To described icmp message, to generate response icmp message.
Preferably, the described response icmp message of described line card feedback includes to the step of described terminal:
Described line card searches the output port of next skip list corresponding with ip address, described source in routing table；
Described response icmp message is sent to terminal by described output port by described line card.
Preferably, described when receiving control protocol message i.e. icmp message between the net that terminal sends, institute
Before stating the ip address, source of the line card described icmp message of acquisition and the step of purpose ip address, described gateway
Equipment response to network connectedness method includes:
When receiving the message that terminal sends, described line card detects whether described gateway device is in quickly
The pattern of response icmp message；
If detecting, gateway device is in the pattern quickly responding icmp message, and described line card judges currently to connect
Whether the message received is icmp message.
Preferably, described gateway device response to network connectedness method also includes:
Receiving the message that terminal sends, and when described message is not icmp message, described line card will connect
The message received is sent to master control, responds described message for master control.
Additionally, for achieving the above object, the present invention also proposes a kind of gateway device response to network connectedness dress
Putting, described gateway device response to network connectivity means includes:
Acquisition module, is used for when receiving control protocol message i.e. icmp message between the net that terminal sends,
Obtain ip address, source and the purpose ip address of described icmp message；
Generation module, for mating with the ip address of the gateway device at its place in described purpose ip address,
And ip address, described source is when mating with the ip address in the routing table of described gateway device, based on described icmp
Message generates response icmp message；
Feedback module, is used for feeding back described response icmp message to described terminal.
Preferably, described generation module includes:
Whether computing unit, for calculating the verification of described icmp message and and judging described verification and be 0；
Exchange unit, if for described verification and be 0, exchanging ip address, source and the mesh of described icmp message
Ip address；
Processing unit, for calculate the verification exchanging icmp heading in the icmp message behind ip address and,
And the verification position corresponding with being written to icmp heading after calculating；
Described processing unit, be additionally operable to calculate whole icmp message verification and, and the verification after calculating
The position corresponding with being written to icmp message；
Signal generating unit, is used for the mac address of the described network equipment as mac address, source and by described
Mac address corresponding to terminal is as purpose mac address, and by mac address, described source and purpose mac ground
In location encapsulation extremely described icmp message, to generate response icmp message.
Preferably, described feedback module includes:
Search unit, for searching the outfan of next skip list corresponding with ip address, described source in routing table
Mouthful；
Transmitting element, for being sent to terminal by described response icmp message by described output port.
Preferably, described gateway device response to network connectivity means also includes:
Detection module, for when receiving the message that terminal sends, detecting whether described gateway device is located
In quickly response icmp message pattern；
Judge module, if for detecting that gateway device is in quickly response icmp message pattern, it is judged that when
Before the message that receives whether be icmp message.
Preferably, described gateway device response to network connectivity means also includes:
Processing module, for receiving the message that terminal sends, and when described message is not icmp message,
The message received is sent to master control, responds described message for master control.
The gateway device response to network connectedness method and apparatus that the present invention proposes, the line card of gateway device is first
Obtain ip address, source and the purpose ip address of icmp message, more described icmp message is processed with life
Become response icmp message, finally described response icmp message is sent to terminal, to respond terminal ping
The icmp message asking rather than being obtained by line card terminal of gateway device, then line card will obtain again
To icmp message report master control and process because master control to process all kinds of message, therefore respond icmp
The time of message can be elongated, and by the way of line card directly processes icmp message and is sent to terminal, carries
The high speed of gateway device response terminal ping request.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of gateway device response to network connectedness method first embodiment of the present invention；
Fig. 2 is that line card of the present invention generates response icmp message preferred embodiment based on described icmp message
Schematic flow sheet；
Fig. 3 is that line card of the present invention feeds back described response icmp message to described terminal preferred embodiment
Schematic flow sheet；
Fig. 4 is the schematic flow sheet of gateway device response to network connectedness method the 4th embodiment of the present invention；
Fig. 5 is the functional module signal of gateway device response to network connectivity means first embodiment of the present invention
Figure；
Fig. 6 is the preferred embodiment refinement high-level schematic functional block diagram of generation module in Fig. 5；
Fig. 7 is the preferred embodiment refinement high-level schematic functional block diagram of feedback module in Fig. 5；
Fig. 8 is the functional module signal of gateway device response to network connectivity means the 4th embodiment of the present invention
Figure.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
The present invention provides a kind of gateway device response to network connectedness method.
With reference to the flow process that Fig. 1, Fig. 1 are gateway device response to network connectedness method first embodiment of the present invention
Schematic diagram.
The present embodiment proposes a kind of gateway device response to network connectedness method, described gateway device response net
Network connectedness method includes:
Step S10, when receiving control protocol message i.e. icmp message between the net that terminal sends, line card
Obtain ip address, source and the purpose ip address of described icmp message；
In the present embodiment, if the message receiving terminal transmission is icmp message, described line card first extracts
The pointer of described icmp message, described pointer is the pointer of 2 layers of heading, needs by skew 12
Byte, points to the vlan field of message, and described line card judges whether described icmp message is many vlan mark again
Sign the message of type, obtain the number of the vlan-label of icmp message further, it is to be understood that icmp
Message source mac address and purpose mac address respectively take 6 bytes, take altogether 12 bytes, one
Vlan takies 4 bytes, then the number of tags being multiplied by vlan obtains the byte number that vlan information takies altogether,
The byte number that so mac address takies altogether plus vlan is exactly that 3 layers of heading are relative to 2 layers of heading
Side-play amount, 2 layers of head pointer of message will point to 3 layers of information header of message plus this side-play amount, 3
Front 4 bytes of layer information header are exactly the purpose ip address of message, and 5-8 byte is the source ip ground of message
Location, we have just got source ip and the purpose ip address of message by this method.
Step S20, mates with the ip address of the gateway device at its place in described purpose ip address, and institute
Stating ip address, source when mating with the IP address in the routing table of described gateway device, described line card is based on described
Icmp message generates response icmp message；
In the present embodiment, described step S20 includes step:
Step A, described line card judges that whether described purpose ip address is the gateway of the gateway device at its place
Ip address；
In the present embodiment, described line card judges that whether described purpose ip address is the gateway ip of gateway device
Address optimal way is: after line card gets purpose ip of icmp message, it is judged that whether described ip is net
Close ip.In general, configuring gateway ip when, gateway device can issue Host routes to hardware core
The gateway ip of sheet routing table, i.e. gateway device, gateway device also can preserve a identical record and exists simultaneously
In software routing table, different types of ip has different type marks, and gateway ip can be by device flag
Local ip mark, the loopback port address of gateway also has loopback (loop-back address) mark.With
Purpose ip goes to search software routing table, if find this ip in Host routes table, and the mark of this ip
It is local ip mark or loopback mark, then proves that this icmp message is other equipment ping net
Close ip address, need us quickly to return bag and process, i.e. need to carry out the response of ping request.
Step B, described line card judges in the routing table whether ip address, described source exists described gateway device；
In the present embodiment, described line card judges whether ip address, described source exists the road of described gateway device
By optimal way in table it is: described line card judges that whether the ip address, source of icmp message is on the road of gateway device
By in table, the purpose done so be need to judge follow-up middle ip address, source and purpose ip address are exchanged after,
Purpose ip (the source ip of the icmp message i.e. received) of the message finally sent can find the road of response
By table, that i.e. can find reality goes out port.Further, if it is determined that ip address, source is not at gateway
In the routing table of equipment, then flow process below would not be continued, but icmp message up sending to master control
Carrying out process.
Step C, described line card processes described icmp message, to generate the icmp message of response.
In the present embodiment, the most described line card to the verification of described icmp message and calculates and checks
Deng operation, and according to the assay of verification sum, ip address, source and purpose ip address are interchangeable, with
Purpose ip (the source ip of the icmp message i.e. received) of the icmp message for finally sending can find
The routing table of response, i.e. can find the output port of reality, and finally, described line card obtains described network
The mac address, source of equipment and the purpose mac address of described routing table, by mac address, described source and purpose
In mac address encapsulation extremely described icmp message, to generate response icmp message.Step S30, described line
Card feeds back described response icmp message to described terminal.
The gateway device response to network connectedness method that the present embodiment proposes, the line card of gateway device first obtains
The ip address, source of icmp message and purpose ip address, then process described icmp message to generate sound
Answer icmp message, finally described response icmp message is sent to terminal, to respond terminal ping gateway
The request of equipment rather than obtained the icmp message of terminal by line card, then line card will get again
Icmp message reports master control and processes, because master control to process all kinds of message, therefore response icmp report
The time of literary composition can be elongated, and by the way of line card directly processes icmp message and is sent to terminal, improves
The speed of gateway device response terminal ping request.
Further, the motility connective in order to increase gateway device response to network, implement based on first
Example proposes the second embodiment of gateway device response to network connectedness method of the present invention, in the present embodiment, ginseng
According to Fig. 2, described step S20 includes:
Step S21, described line card calculates the verification of described icmp message and and judges described verification and whether
It is 0；
In the present embodiment, whether line card first calculates the verification of icmp message and and judges described verification and be
0, specific algorithm is exactly: the stem of icmp message is regarded as the numeral composition in units of 16, successively
Carrying out complement of one's summation, such as, the stem of the current icmp message obtained is the numeral of 32,
The numeral of 32 is divided into two 16 system numbers, carries out complement of one's calculating, and the knot that will calculate respectively
Structure is sued for peace；Whether the result then checking the verification sum calculated is 0, if not being 0 to represent verification exactly
Do not carry out follow-up process with wrong, return mistake, i.e. stop the following step operation.
Step S22, if described verification and be 0, described line card exchanges the ip address, source of described icmp message
With purpose ip address；
In the present embodiment, described line card according to find before point to message 3 layers of head pointer information,
Get ip address, source and the purpose ip address of message, then the purpose ip address after changing is write 3 layers and refer to
In front 4 bytes of pin, the ip address, source after changing is write in 5 to 8 bytes of 3 layers of pointer offset,
So complete ip address, source and the exchange of purpose ip address of message.
Step S23, described line card calculates the school of icmp heading in the icmp message after exchanging ip address
Test and, and the verification position corresponding with being written to icmp heading after calculating；
In the present embodiment, the described line card school to having exchanged the message behind ip address, source and purpose ip address
Testing and recalculate, the algorithm of calculating is: the data that need to verify are regarded as the number in units of 16
Word forms, and carries out complement of one's summation successively；The result obtained is deposited into icmp heading corresponding
In position.
Step S24, described line card calculate whole icmp message verification and, and will calculate after verification and
It is written to the position that icmp message is corresponding；
In the present embodiment, described line card also can arrange the ttl value of ip message in advance, preferably by ttl value
Use as default 255, it is to be understood that the time to live field of described ip message is i.e. specified
Ip is coated router and abandons the maximum web hop count amount allowing to pass through before and use as default 255, and again counts
Calculate whole ip message verification and, the position corresponding with being written to icmp message by the verification of calculating.
Step S25, the mac address of the described network equipment as mac address, source and is incited somebody to action by described line card
Mac address corresponding to described terminal is as purpose mac address, and by mac address, described source and purpose
In mac address encapsulation extremely described icmp message, to generate response icmp message.
In the present embodiment, mac address, described source and purpose mac address are encapsulated to described by described line card
Mode in icmp message is preferably described line card and first adds next skip list that described routing table is associated
Mac address is in the purpose mac address of icmp message, and the gateway mac address adding gateway device is arrived
In the mac address, source of icmp message, then by the ip address, source according to described icmp message at described net
The next skip list of the corresponding routing table in the equipment of pass, finds next of routing table of ip address, described source
Skip list, using the described next skip list found as going out port, and will encapsulate mac address, source and purpose
The icmp message of mac address is sent to terminal, to complete to respond the request of terminal ping gateway device.
Further, the motility connective in order to increase gateway device response to network, implement based on first
Example proposes the 3rd embodiment of gateway device response to network connectedness method of the present invention, in the present embodiment, ginseng
According to Fig. 3, described step S30 includes:
Step S31, described line card searches next skip list corresponding with ip address, described source in routing table
Output port；
Step S32, described response icmp message is sent to terminal by described output port by described line card.
In the present embodiment, it is to be understood that routing table stores the address information that ip address, source is corresponding,
But, but not to be ip address, source corresponding goes out port for this address information, the address in the most described routing table
Information is quickly to respond the index information of icmp message, when finding ip address pair, described source in described routing table
When answering address information, according in described index for address information to next skip list, and confirm described next skip list
The position of middle correspondence is the output port of response icmp message.
Further, the motility connective in order to increase gateway device response to network, implement based on first
Example proposes the 4th embodiment of gateway device response to network connectedness method of the present invention, in the present embodiment, ginseng
According to Fig. 4, before described step S10, described gateway device response to network connectedness method includes:
Step S40, when receiving the message that terminal sends, whether described line card detects described gateway device
It is in quickly response icmp message pattern；
Step S50, if detecting, gateway device is in quickly response icmp message pattern, and described line card is sentenced
Whether the disconnected message being currently received is icmp message.
In the present embodiment, include before step S40 that the step quickly responding ping request instruction is opened in configuration
Suddenly, i.e. user can quickly respond the finger of ping gateway device by the instruction triggers of quickly response icmp message
Order, when user is in the pattern of quickly response ping gateway device, is receiving the ping that terminal sends
During request, gateway device is by triggering command, and enters the flow process quickly processing icmp message；If detecting
Gateway device is in quickly response icmp message pattern, and whether the message that the judgement of described line card is currently received
First obtain, for icmp message, i.e. line card, the message that described terminal is corresponding, and judge that the message of described acquisition is
No for icmp message, whether the described message judging described acquisition is that the mode of icmp message is preferably passed through
Acl rule (a kind of access control technology) judges, the mode that the described acl of utilization judges preferably is passed through
Obtain unique mark such as protocol number of message, i.e. can determine whether the message currently obtained according to the protocol number obtained
Type whether with the type matching of icmp message, if coupling, line card i.e. can determine whether that the message received is
Icmp message.And quickly respond the process that ping asks, if it is not, enter message normal process stream
Journey, i.e. by line card obtain message, line card again by obtain message up sending to master control, carried out by master control
A series of response processes.
Further, the motility connective in order to increase gateway device response to network, implement based on first
Example proposes the 5th embodiment of gateway device response to network connectedness method of the present invention, in the present embodiment, institute
State gateway device response to network connectedness method also to include:
Receiving the message that terminal sends, and when described message is not icmp message, described line card will connect
The message received is sent to master control, responds described message for master control.
In the present embodiment, whether what preferably judgement received is icmp message, if it is not, according to normally
Flow process send master control, for master control respond described message.
The present invention further provides a kind of gateway device response to network connectivity means.
With reference to the function that Fig. 5, Fig. 5 are gateway device response to network connectivity means preferred embodiment of the present invention
Module diagram.
It is emphasized that it will be apparent to those skilled in the art that functional block diagram shown in Fig. 5 is only
The exemplary plot of one preferred embodiment, those skilled in the art responds around the gateway device shown in Fig. 5
The functional module of network connectivty device, can carry out supplementing of new functional module easily；Each functional module
Title be self-defined title, be only used for assisting and understand each of this gateway device response to network connectivity means
Individual program function block, is not used in restriction technical scheme, and the core of technical solution of the present invention is,
The function that the functional module of each self-defined title is to be reached.
The present embodiment proposes a kind of gateway device response to network connectivity means, described gateway device response net
Network connectivity means includes:
Acquisition module 10, is used for when receiving control protocol message i.e. icmp message between the net that terminal sends,
Obtain ip address, source and the purpose ip address of described icmp message；
In the present embodiment, if the message receiving terminal transmission is icmp message, described acquisition module 10
First extracting the pointer of described icmp message, described pointer is the pointer of 2 layers of heading, needs by skew
12 bytes, point to the vlan field of message, then judge whether described icmp message is many vlan-labels
The message of type, described acquisition module 10 obtains the number of the vlan-label of icmp message further, can
To be understood by, icmp message source mac address and purpose mac address respectively take 6 bytes, Yi Gongzhan
By 12 bytes, a vlan takies 4 bytes, then the number of tags being multiplied by vlan obtains vlan information
The byte number taken altogether, the byte number that such mac address takies altogether plus vlan is exactly 3 layers of message
Head will point to plus this side-play amount relative to the side-play amount of 2 layers of heading, 2 layers of head pointer of message
3 layers of information header of message, front 4 bytes of 3 layers of information header are exactly the purpose ip address of message, 5-8
Byte is the ip address, source of message, and we have just got source ip and purpose ip of message by this method
Address.
Generation module 20, for mating with the ip address of the gateway device at its place in described purpose ip address,
And ip address, described source is when mating with the IP address in the routing table of described gateway device, based on described icmp
Message generates response icmp message；
In the present embodiment, described generation module 20 includes:
Judging unit, for judging that whether described purpose ip address is the gateway ip of the gateway device at its place
Address；
In the present embodiment, described judging unit judges that whether described purpose ip address is the net of gateway device
Closing ip address optimal way is: after acquisition module 10 gets purpose ip of icmp message, it is judged that unit
Judge whether described ip is gateway ip.In general, configure gateway ip when, gateway device can under
Send out Host routes to the gateway ip of hardware chip routing table, i.e. gateway device, gateway device also can be protected simultaneously
Depositing a identical record in software routing table, different types of ip has different type marks, net
Closing ip to be identified for local ip by device flag, the loopback port address of gateway also has a loopback (ring
Go back to address) mark.With purpose ip go search software routing table, if find this ip in Host routes table,
And the mark of this ip is local ip mark or loopback mark, then prove that this icmp message is
Other equipment ping gateway ip address, need us quickly to return bag and process, i.e. need to carry out ping
The response of request.
Described judging unit, is additionally operable to judge the route whether ip address, described source exists described gateway device
In table；
In the present embodiment, described judging unit judges whether ip address, described source exists described gateway device
Routing table in optimal way be: described judging unit judges that whether the ip address, source of icmp message is at gateway
In the routing table of equipment, the purpose done so be need to judge follow-up middle by ip address, source and purpose ip address
After exchange, purpose ip (the source ip of the icmp message i.e. received) of the message finally sent can be looked for
To the routing table of response, that i.e. can find reality goes out port.Further, if described judging unit
Ip address, judgement source is not in the routing table of gateway device, then would not continue flow process below, and
It is that the carrying out of icmp message up sending to master control is processed.
Signal generating unit, is used for processing described icmp message, to generate the icmp message of response.
In the present embodiment, the most described signal generating unit the verification of described icmp message and carrying out is calculated and
The operations such as inspection, and according to the assay of verification sum, ip address, source and purpose ip address are interchangeable,
Purpose ip (the source ip of the icmp message i.e. received) for the icmp message finally sent can be looked for
To the routing table of response, i.e. can find the output port of reality, finally, obtain the described network equipment
Mac address, source and the purpose mac address of described routing table, by mac address, described source and purpose mac ground
In location encapsulation extremely described icmp message, generate response icmp message for signal generating unit.
The gateway device response to network connectivity means that the present embodiment proposes, the line card of gateway device first obtains
The ip address, source of icmp message and purpose ip address, then process described icmp message to generate sound
Answer icmp message, finally described response icmp message is sent to terminal, to respond terminal ping gateway
The request of equipment rather than obtained the icmp message of terminal by line card, then line card will get again
Icmp message reports master control and processes, because master control to process all kinds of message, therefore response icmp report
The time of literary composition can be elongated, and by the way of line card directly processes icmp message and is sent to terminal, improves
The speed of gateway device response terminal ping request.
Further, the motility connective in order to increase gateway device response to network, implement based on first
Example proposes the second embodiment of gateway device response to network connectivity means of the present invention, in the present embodiment, ginseng
According to Fig. 6, described generation module 20 includes:
Whether computing unit 21, for calculating the verification of described icmp message and and judging described verification and be
0；
In the present embodiment, computing unit 21 first calculates the verification of icmp message and and judges described verification
Whether be 0, specific algorithm is exactly: the stem of icmp message is regarded as the blockette in units of 16
Becoming, carry out complement of one's summation successively, such as, the stem of the current icmp message obtained is 32
Numeral, the numeral of 32 is divided into two 16 system numbers, carries out complement of one's calculating respectively, and will
The structure summation calculated；Whether the result then checking the verification sum calculated is 0, if not being 0 to be exactly
Represent verification and do not carry out follow-up process with wrong, return mistake, i.e. stop the following step operation.
Exchange unit 22, if for described verification and be 0, exchange described icmp message ip address, source and
Purpose ip address；
In the present embodiment, described exchange unit 22 is according to the 3 layers of head pointer pointing to message found before
Information, gets ip address, source and the purpose ip address of message, then the purpose ip address write after changing
In front 4 bytes of 3 layers of pointer, the ip address, source after changing is write 5 to 8 words of 3 layers of pointer offset
In joint, so complete ip address, source and the exchange of purpose ip address of message.
Processing unit 23, for calculating the verification of icmp heading in the icmp message after exchanging ip address
With, and the verification position corresponding with being written to icmp heading after calculating；
In the present embodiment, after described processing unit 23 is to having exchanged ip address, source and purpose ip address
The verification of message and recalculating, the algorithm of calculating is: the data that need to verify are regarded as with 16 be
The numeral composition of unit, carries out complement of one's summation successively；The result obtained is deposited into icmp message
In the position that head is corresponding.
Described processing unit 23, be additionally operable to calculate whole icmp message verification and, and the school after calculating
Test the position corresponding with being written to icmp message；
In the present embodiment, described processing unit 23 also can arrange the ttl value of ip message in advance, preferably
Ttl value is used as default 255, it is to be understood that the time to live field of described ip message
I.e. specify ip to be coated router to abandon the maximum web hop count amount allowing to pass through before and use as default 255,
And again calculate whole ip message verification and, the position corresponding with being written to icmp message by the verification of calculating
Put.
Signal generating unit 24, is used for the mac address of the described network equipment as mac address, source and by institute
State mac address corresponding to terminal as purpose mac address, and by mac address, described source and purpose mac
In address encapsulation extremely described icmp message, to generate response icmp message.
In the present embodiment, first mac address, described source and purpose mac address are encapsulated to described icmp
Mode in message is preferably described signal generating unit 24 and first adds the mac address of described routing table to icmp
In the purpose mac address of message, add the gateway mac address source mac to icmp message of gateway device
In address, then by corresponding road in described gateway device, the ip address, source according to described icmp message
By the next skip list of table, find the next skip list of the routing table of ip address, described source, find described
Next skip list as going out port, and the icmp message of mac address, source and purpose mac address will be encapsulated
It is sent to terminal, to complete to respond the request of terminal ping gateway device.
Further, the motility connective in order to increase gateway device response to network, implement based on first
Example proposes the 3rd embodiment of gateway device response to network connectivity means of the present invention, in the present embodiment, ginseng
According to Fig. 7, described feedback module 30 includes:
Search unit 31, for searching the output of next skip list corresponding with ip address, described source in routing table
Port；
Transmitting element 32, for being sent to terminal by described response icmp message by described output port.
In the present embodiment, it is to be understood that routing table stores the address information that ip address, source is corresponding,
But, but not to be ip address, source corresponding goes out port for this address information, the address in the most described routing table
Information is quickly to respond the index information of icmp message, when finding ip address pair, described source in described routing table
When answering address information, search unit 31 according in described index for address information to next skip list, and confirm institute
State the output port that position corresponding in next skip list is response icmp message.
Further, the motility connective in order to increase gateway device response to network, implement based on first
Example proposes the 4th embodiment of gateway device response to network connectivity means of the present invention, in the present embodiment, ginseng
According to Fig. 8, described gateway device response to network connectivity means also includes:
Whether detection module 40, for when receiving the message that terminal sends, detecting described gateway device
It is in quickly response icmp message pattern；
Judge module 50, if for detecting that gateway device is in quickly response icmp message pattern, it is judged that
Whether the message being currently received is icmp message.
In the present embodiment, detection module 40 also includes dispensing unit, is used for configuring unlatching and quickly responds ping
Request, i.e. user can quickly respond ping gateway device by the instruction triggers of quickly response icmp message
Instruction, when user is in the pattern of quickly response ping gateway device, is receiving the ping that terminal sends
During request, gateway device is by triggering command, and enters the flow process quickly processing icmp message；If detecting
Gateway device is in quickly response icmp message pattern, and the judgement of described judge module 50 is currently received
Whether message is icmp message, the most first obtains the message that described terminal is corresponding, and judges the report of described acquisition
Whether literary composition is icmp message, and whether the described message judging described acquisition is that the mode of icmp message is preferred
Being judged by acl rule (a kind of access control technology), the described mode utilizing acl to judge is preferred
By obtaining unique mark such as protocol number of message, i.e. can determine whether currently to obtain according to the protocol number of acquisition
The type of message whether with the type matching of icmp message, if coupling, described judge module 50
Judge that the message received is icmp message.And quickly respond the process that ping asks, if it is not, enter
Enter message normal process flow process, i.e. obtain message by line card, then by the message up sending of acquisition to master control,
A series of response process is carried out by master control.
Further, the motility connective in order to increase gateway device response to network, implement based on first
Example proposes the 5th embodiment of gateway device response to network connectivity means of the present invention, in the present embodiment, institute
State gateway device response to network connectivity means also to include:
Processing module, for receiving the message that terminal sends, and when described message is not icmp message,
The message received is sent to master control, responds described message for master control.
In the present embodiment, whether what the judgement of the most described processing module received is icmp message, if not
It is to send master control according to normal flow process, responds described message for master control.
It should be noted that in this article, term " include ", " comprising " or its other variant any
Be intended to comprising of nonexcludability so that include the process of a series of key element, method, article or
Person's system not only includes those key elements, but also includes other key element being not expressly set out, or also
Including the key element intrinsic for this process, method, article or system.In the feelings not having more restriction
Under condition, statement " including ... " key element limited, it is not excluded that include this key element process,
Method, article or system there is also other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive above-mentioned
Embodiment method can add the mode of required general hardware platform by software and realize, naturally it is also possible to logical
Cross hardware, but a lot of in the case of the former is more preferably embodiment.Based on such understanding, the present invention's
The part that prior art is contributed by technical scheme the most in other words can be with the form body of software product
Revealing to come, this computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, light
Dish) in, including some instructions with so that a station terminal equipment (can be mobile phone, computer, service
Device, air-conditioner, or the network equipment etc.) perform the method described in each embodiment of the present invention.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or
Connect and be used in other relevant technical field, be the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. a gateway device response to network connectedness method, it is characterised in that described gateway device responds
Network connectivty method comprises the following steps:
When receiving control protocol message i.e. icmp message between the net that terminal sends, line card obtains described
The ip address, source of icmp message and purpose ip address；
Mate with the ip address of the gateway device at its place in described purpose ip address, and ip address, described source
When mating with the IP address in the routing table of described gateway device, described line card is raw based on described icmp message
Become response icmp message；
Described line card feeds back described response icmp message to described terminal.
2. gateway device response to network connectedness method as claimed in claim 1, it is characterised in that institute
State line card step based on described icmp message generation response icmp message to include:
Whether described line card calculates the verification of described icmp message and and judges described verification and be 0；
If described verification and be 0, described line card exchanges ip address, source and purpose ip of described icmp message
Address；
Described line card calculate exchange icmp heading in the icmp message behind ip address verification and, and will
The position that verification after calculating is corresponding with being written to icmp heading；
Described line card calculate whole icmp message verification and, and will calculate after verification and be written to icmp
The position that message is corresponding；
Described line card using the mac address of the described network equipment as mac address, source and by described terminal pair
The mac address answered is as purpose mac address, and is encapsulated in mac address, described source and purpose mac address
To described icmp message, to generate response icmp message.
3. gateway device response to network connectedness method as claimed in claim 1, it is characterised in that institute
The step stating the line card described response icmp message of feedback extremely described terminal includes:
Described line card searches the output port of next skip list corresponding with ip address, described source in routing table；
Described response icmp message is sent to terminal by described output port by described line card.
4. gateway device response to network connectedness method as claimed in claim 1, it is characterised in that institute
Stating when receiving control protocol message i.e. icmp message between the net that terminal sends, described line card obtains described
Before the ip address, source of icmp message and the step of purpose ip address, described gateway device response to network connects
Property method includes:
When receiving the message that terminal sends, described line card detects whether described gateway device is in quickly
Response icmp message pattern；
If detecting, gateway device is in quickly response icmp message pattern, and described line card judges current reception
To message whether be icmp message.
5. the gateway device response to network connectedness method as described in any one of claim 1-4, its feature
Being, described gateway device response to network connectedness method also includes:
Receiving the message that terminal sends, and when described message is not icmp message, described line card will connect
The message received is sent to master control, responds described message for master control.
6. a gateway device response to network connectivity means, it is characterised in that described gateway device responds
Network connectivty device includes:
Acquisition module, is used for when receiving control protocol message i.e. icmp message between the net that terminal sends,
Obtain ip address, source and the purpose ip address of described icmp message；
Generation module, for mating with the ip address of the gateway device at its place in described purpose ip address,
And ip address, described source is when mating with the IP address in the routing table of described gateway device, based on described icmp
Message generates response icmp message；
Feedback module, is used for feeding back described response icmp message to described terminal.
7. gateway device response to network connectivity means as claimed in claim 6, it is characterised in that institute
State generation module to include:
Whether computing unit, for calculating the verification of described icmp message and and judging described verification and be 0；
Exchange unit, if for described verification and be 0, exchanging ip address, source and the mesh of described icmp message
Ip address；
Processing unit, for calculate the verification exchanging icmp heading in the icmp message behind ip address and,
And the verification position corresponding with being written to icmp heading after calculating；
Described processing unit, be additionally operable to calculate whole icmp message verification and, and the verification after calculating
The position corresponding with being written to icmp message；
Signal generating unit, is used for the mac address of the described network equipment as mac address, source and by described
Mac address corresponding to terminal is as purpose mac address, and by mac address, described source and purpose mac ground
In location encapsulation extremely described icmp message, to generate response icmp message.
8. gateway device response to network connectivity means as claimed in claim 6, it is characterised in that institute
State feedback module to include:
Search unit, for searching the outfan of next skip list corresponding with ip address, described source in routing table
Mouthful；
Transmitting element, for being sent to terminal by described response icmp message by described output port.
9. gateway device response to network connectivity means as claimed in claim 6, it is characterised in that institute
State gateway device response to network connectivity means also to include:
Detection module, for when receiving the message that terminal sends, detecting whether described gateway device is located
In quickly response icmp message pattern；
Judge module, if for detecting that gateway device is in quickly response icmp message pattern, it is judged that when
Before the message that receives whether be icmp message.
10. the gateway device response to network connectivity means as described in any one of claim 6-9, its feature
Being, described gateway device response to network connectivity means also includes:
Processing module, for receiving the message that terminal sends, and when described message is not icmp message,
The message received is sent to master control, responds described message for master control.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510369825.5A CN106301997A (en) | 2015-06-29 | 2015-06-29 | Gateway device response to network connectedness method and apparatus |
| PCT/CN2016/086017 WO2017000790A1 (en) | 2015-06-29 | 2016-06-16 | Gateway device network connectivity response method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510369825.5A CN106301997A (en) | 2015-06-29 | 2015-06-29 | Gateway device response to network connectedness method and apparatus |
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| CN106301997A true CN106301997A (en) | 2017-01-04 |
Family
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|---|---|---|---|
| CN201510369825.5A Withdrawn CN106301997A (en) | 2015-06-29 | 2015-06-29 | Gateway device response to network connectedness method and apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN106301997A (en) |
| WO (1) | WO2017000790A1 (en) |
Cited By (3)
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| CN111937358A (en) * | 2018-04-17 | 2020-11-13 | 思科技术公司 | Multiple VRF generic device internet protocol addresses for fabric edge devices |
| CN112333048A (en) * | 2020-11-23 | 2021-02-05 | 中盈优创资讯科技有限公司 | Method and device for detecting on-line user and connectivity of opened service |
| CN113890838A (en) * | 2021-09-24 | 2022-01-04 | 天津津航计算技术研究所 | Network connectivity judgment method based on ICMP (Internet control protocol) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110162437B (en) * | 2019-05-15 | 2023-10-27 | 杭州迪普科技股份有限公司 | Frame type equipment internal connectivity detection method and system |
| CN113364793A (en) * | 2021-06-17 | 2021-09-07 | 北京天融信网络安全技术有限公司 | ICMP hidden tunnel detection method, device and storage medium |
| CN115941560A (en) * | 2021-08-23 | 2023-04-07 | 中兴通讯股份有限公司 | Network diagnosis method and network access device for cross-device link aggregation networking |
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| CN111937358A (en) * | 2018-04-17 | 2020-11-13 | 思科技术公司 | Multiple VRF generic device internet protocol addresses for fabric edge devices |
| CN111937358B (en) * | 2018-04-17 | 2022-09-13 | 思科技术公司 | Multiple VRF generic device internet protocol addresses for fabric edge devices |
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| WO2017000790A1 (en) | 2017-01-05 |
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