CN102185766A - Unicast forwarding method and forwarding equipment for responding messages by DHCP (Dynamic host configuration protocol) server - Google Patents
Unicast forwarding method and forwarding equipment for responding messages by DHCP (Dynamic host configuration protocol) server Download PDFInfo
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- CN102185766A CN102185766A CN2011101051562A CN201110105156A CN102185766A CN 102185766 A CN102185766 A CN 102185766A CN 2011101051562 A CN2011101051562 A CN 2011101051562A CN 201110105156 A CN201110105156 A CN 201110105156A CN 102185766 A CN102185766 A CN 102185766A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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Abstract
The invention discloses a unicast forwarding method and forwarding equipment for responding messages by a DHCP (dynamic host configuration protocol) server. When receiving a request message, each forwarding equipment in a DHCP group network utilizes indication sub-options in the request message to add path information of receiving the request message by the equipment; and as the DHCP server unchangeably brings back the indication sub-option when responding the message, even when the forwarding equipment is connected with more than two other forwarding equipment that are connected in parallel, the forwarding equipment can forward the response message to certain other forwarding equipment exactly in a unicasting way according to the path information added per se in the indication sub-option carried by the response message. Therefore, the unicast forwarding method and the forwarding equipment can be applied to group network situations in which the forwarding equipment have complex cascaded and/or parallel relationships.
Description
Technical field
The present invention relates to the communications field, particularly the clean culture retransmission method and the transferring equipment of DHCP (DHCP, Dynamic HostConfiguration Protoco1) server response message.
Background technology
DHCP is network configuration parameters such as the dynamic assigns the Internet protocol of the network equipment (IP, Internet Protocol) address based on the client/server communication pattern.
Fig. 1 is a kind of typical DHCP networking schematic diagram of the prior art, comprises Dynamic Host Configuration Protocol server 13, dhcp client 111～114 in this networking, reaches transferring equipment 12.Each functional entity shown in Figure 1 will be realized dynamic assignment IP address according to following steps 1～step 8.
Step 1:DHCP client 112 broadcasting DHCP-DISCOVER messages.
Step 2: transferring equipment 12 sends to Dynamic Host Configuration Protocol server 13 according to configuration with the clean culture of DHCP-DISCOVER message.
Step 3:DHCP server 13 is dhcp client 112 distributing IP addresses, IP address allocated is carried at clean culture sends to transferring equipment 12 in the DHCP-OFFER message.
Step 4: transferring equipment 12 sends to dhcp client 112 with the clean culture of DHCP-OFFER message.
Step 5:DHCP client 112 broadcasting DHCP-REQUEST messages carry Dynamic Host Configuration Protocol server 13 IP address allocated in the DHCP-REQUEST message.
Step 6: transferring equipment 12 sends to Dynamic Host Configuration Protocol server 13 according to configuration with the clean culture of DHCP-REQUEST message.
13 clean cultures of step 7:DHCP server send the DHCP-ACK message, confirm the distribution of IP address.
Step 8: transferring equipment 12 sends to dhcp client 112 with the clean culture of DHCP-ACK message.
The message of dhcp client broadcasting is referred to as request message in above-mentioned steps 1 and the step 5.The message that Dynamic Host Configuration Protocol server 13 clean cultures send in above-mentioned steps 3 and the step 7 is referred to as back message using.
If transferring equipment shown in Figure 1 12 has connected four dhcp clients respectively, transferring equipment 12 be in order to be transmitted to corresponding D HCP client with the back message using clean culture accurately of Dynamic Host Configuration Protocol server 13, can be in the following ways:
Transferring equipment 12 is supported relay agent information option (Option82, Relay Agent InformationOption) function.In above-mentioned steps 2 and step 6, receive the request message of certain dhcp client transmission when transfer equipment 12 after, in the request message that receives, add the sub-option of Option82, the information of this request message of the sub-option recorder of this Option82, for example this request message is from which VLAN, from which port etc., and these information have been indicated the dhcp client that sends request message in fact.In above-mentioned steps 3 and step 7, the back message using of Dynamic Host Configuration Protocol server 13 can be with intact the taking back of the sub-option of Option82.In above-mentioned steps 4 and step 8, the sub-option of Option82 that carries in the back message using of transferring equipment 12 according to Dynamic Host Configuration Protocol server 13 sends to the dhcp client of indicating in the sub-option of Option82 with the back message using clean culture of Dynamic Host Configuration Protocol server 13.
Fig. 2 is the typical DHCP networking of an another kind of the prior art schematic diagram, compares and networking shown in Figure 1, and structure is more complicated.As shown in Figure 2, transferring equipment 23 has also connected transferring equipment 22 and transferring equipment 24 except connecting dhcp client 211.In this case, if still adopt above-mentioned mode based on Option82, when transfer equipment 24 receives dhcp client 212 transmission request messages, the sub-option of Option82 will be added in this request message, and in the sub-option of Option82, add request message from which VLAN, from which port etc., then request message is transmitted to transferring equipment 23.Transferring equipment 23 directly is transmitted to Dynamic Host Configuration Protocol server 25 with the request message that transferring equipment 24 sends.When transfer equipment 23 receives the back message using of Dynamic Host Configuration Protocol server 25 transmissions, because the sub-option indication of the Option82 that carries in this back message using is dhcp client 212, but transferring equipment 23 does not directly link to each other with dhcp client 212, so transferring equipment 23 can not determine that it still is transferring equipment 24 that back message using should be transmitted to transferring equipment 22.
As seen, when being connected with other transferring equipment in parallel more than two on the transferring equipment in the DHCP networking, do not carry out the method that clean culture is transmitted in the prior art at the Dynamic Host Configuration Protocol server back message using.
Summary of the invention
The invention provides the method that a kind of Dynamic Host Configuration Protocol server back message using clean culture is transmitted, when being connected with other transferring equipment in parallel more than two on a transferring equipment, the Dynamic Host Configuration Protocol server back message using is transmitted in clean culture accurately.
The invention provides a kind of transferring equipment, when being connected with other transferring equipment in parallel more than two on this transferring equipment, the Dynamic Host Configuration Protocol server back message using is transmitted in the clean culture accurately of this transferring equipment.
Technical scheme of the present invention is achieved in that
A kind of clean culture retransmission method of dynamic host configuration protocol DHCP server response message, key are that this method comprises:
Add the routing information that receives the described request message in the sub-option of the indication of transferring equipment in request message, transmit the described request message then;
Transferring equipment receives the Dynamic Host Configuration Protocol server back message using, searches the routing information that oneself adds in the sub-option of the indication that described back message using is taken back, and transmits described back message using according to described routing information clean culture.
A kind of transferring equipment, key are that this equipment comprises:
The information adding device is used for adding the routing information that receives the described request message in the sub-option of the indication of request message, transmits the described request message then;
The clean culture retransmission unit, be used to receive dynamic host configuration protocol DHCP server response message, in the sub-option of the indication that described back message using is taken back, search the routing information that the information adding device in the transferring equipment adds under self, transmit described back message using according to described routing information clean culture.
As seen, because Dynamic Host Configuration Protocol server can be with intact the taking back of the sub-option of indication in back message using, so transferring equipment can be searched the routing information that oneself adds in the sub-option of the indication that back message using is taken back, and know the path that self receives request message by this routing information, be the path that current back message using should clean culture be transmitted, can transmit back message using according to the routing information clean culture that finds thus.Because all having added, each transferring equipment self receives the routing information of request message in the sub-option of indication, even so be connected with other transferring equipment in parallel more than two on certain transferring equipment, this transferring equipment is when receiving the request message of certain other transferring equipment forwarding, the routing information of this request message from these other transferring equipment will be added in the sub-option of the indication in request message, when receiving back message using, just can be according to the routing information that oneself adds in the sub-option of the indication that back message using is taken back, which other transferring equipment the accurate in locating back message using should clean culture be forwarded to.
Description of drawings
Fig. 1 is first kind of typical DHCP networking schematic diagram of the prior art;
Fig. 2 is second kind of typical DHCP networking schematic diagram of the prior art;
Fig. 3 is the flow chart of the clean culture retransmission method of Dynamic Host Configuration Protocol server back message using among the present invention;
Fig. 4 is the structural representation of the sub-option of Option82 in the embodiment of the invention;
Fig. 5 is the structural representation of the addition Item of the sub-option of Option82 in the embodiment of the invention;
Fig. 6 is the flow chart of the clean culture retransmission method of Dynamic Host Configuration Protocol server back message using in the embodiment of the invention;
Fig. 7 is the structural representation of transferring equipment among the present invention;
Fig. 8 is the structural representation of information adding device in the embodiment of the invention;
Fig. 9 is the structural representation of clean culture retransmission unit in the embodiment of the invention.
Embodiment
For making objects and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and Examples.
In the present invention, preestablish a kind of sub-option of indication that can be carried in the request message, and pre-configured Dynamic Host Configuration Protocol server is when the back message using that sends at certain request message, can be with intact the taking back of the sub-option of the indication in the request message in back message using.
Fig. 3 is the flow chart of the clean culture retransmission method of Dynamic Host Configuration Protocol server back message using among the present invention, and this flow process comprises:
Step 301: transferring equipment is added the routing information that receives this request message in the sub-option of the indication that request message carries, transmit this request message then.
Step 302: transferring equipment receives the Dynamic Host Configuration Protocol server back message using, searches the routing information that oneself adds in the sub-option of the indication that back message using is taken back, and transmits back message using according to this routing information clean culture.
In this step, if transferring equipment is the transferring equipment of directly communicating by letter with Dynamic Host Configuration Protocol server, receiving is the back message using that Dynamic Host Configuration Protocol server sends, and under other situations, what receive is the back message using that other transferring equipment are transmitted.
As seen, among the present invention in the clean culture retransmission method of Dynamic Host Configuration Protocol server back message using, because Dynamic Host Configuration Protocol server can be with intact the taking back of the sub-option of indication in back message using, so transferring equipment can be searched the routing information that oneself adds in the sub-option of the indication that back message using is taken back, and know the path that self receives request message by this routing information, be the path that current back message using should clean culture be transmitted, can transmit back message using according to the routing information clean culture that finds thus.Because all having added, each transferring equipment self receives the routing information of request message in the sub-option of the indication that request message carries, even so be connected with other transferring equipment in parallel more than two on certain transferring equipment, this transferring equipment is when receiving the request message of certain other transferring equipment forwarding, the routing information of this request message from these other transferring equipment will be added in the sub-option of the indication of carrying at request message, when receiving back message using, just can be according to the routing information that oneself adds in the sub-option of the indication that back message using is taken back, which other transferring equipment the accurate in locating back message using should clean culture be forwarded to.
Utilize method of the present invention, at the described DHCP networking structure of Fig. 2, and the ratio that exists in the practical application more complicated networking structure shown in Figure 2, each transferring equipment can both be carried out clean culture to the Dynamic Host Configuration Protocol server back message using accurately and be transmitted.
Enumerate an embodiment of the inventive method below.
In the present embodiment, indicate sub-option for setting the sub-option of Option82, Fig. 4 is the structural representation of the sub-option of setting Option82 in the embodiment of the invention, comprises in the sub-option of this setting Option82: the addition Item length field of the sub-option identification field of 1 byte, the sub-option of 1 byte, 1 byte and two above addition Item fields of N1 byte altogether.Above-mentioned N1 is an integer.Fill in the sub-option sign of setting the sub-option of Option82 in the above-mentioned sub-option identification field, this sub-option sign can be provided with according to the practical application needs.Fill in the length of setting the sub-option of Option82 in the above-mentioned sub-option.The length of filling in addition Item in the above-mentioned addition Item length field.Above-mentioned addition Item field in Fig. 4, be expressed as Si (i=1,2 ... N), N is an integer, fills in the routing information of the reception request message of a transferring equipment interpolation in each addition Item field.
Further, Fig. 5 is the structural representation of the addition Item field of the sub-option of setting Option82 in the embodiment of the invention, comprises in this addition Item field: the node identification field of the addition Item identification field of 1 byte, the addition Item length field of 1 byte, N2 byte, the VLAN identification field of 2 bytes, the module id field of 1 byte and the port-mark field of 1 byte.Above-mentioned N2 is an integer.Fill in addition Item sign in the above-mentioned addition Item identification field, the sign i that the addition Item sign can be as shown in Figure 4.The length of filling in this addition Item in the above-mentioned addition Item length field.Above-mentioned node identification field is filled in the node identification of transferring equipment.In above-mentioned VLAN identification field, module id field and the port-mark field, fill in VLAN sign, module id and port-mark that the indicated transferring equipment of node identification in the node identification field receives request message respectively.
Transferring equipment in the present embodiment may be for centralized or distributed, wherein centralized device may comprise a plurality of subcards, distributed apparatus may comprise a plurality of interface boards, and different subcards or interface board may use the port of repetition, for unique identification goes out an outlet information, just need use above-mentioned module id to indicate different subcards or interface board simultaneously like this.
The byte number of each field in the sub-option of above-mentioned setting Option82 can be provided with under the prerequisite that meets the existing protocol regulation flexibly.
Based on the structure of setting the sub-option of Option82 in the present embodiment, Fig. 6 is the flow chart of the clean culture retransmission method of Dynamic Host Configuration Protocol server back message using in the embodiment of the invention, and this flow process comprises:
Step 601: transferring equipment judges that having filled in the sub-option of setting the sub-option of Option82 in the sub-option identification field that whether comprises sub-option of Option82 and the sub-option of this Option82 in the request message that receives identifies, if, execution in step 602, otherwise execution in step 603.
Step 602: transferring equipment is selected an addition Item field in setting the sub-option of Option82, in the node identification field of this addition Item field, fill in self node identification, and in the VLAN of this addition Item field identification field, module id field and port-mark field, fill in VLAN sign, module id and the port-mark that receives request message respectively, transmit request message, execution in step 604 then.
Step 603: transferring equipment is added the sub-option of setting Option82 in the request message that receives, in setting the sub-option of Option82, select an addition Item field, in the node identification field of this addition Item field, fill in self node identification, and in the VLAN of this addition Item field identification field, module id field and port-mark field, fill in VLAN sign, module id and the port-mark that receives request message respectively, transmit request message, execution in step 604 then.
Step 604: transferring equipment receives the back message using that Dynamic Host Configuration Protocol server sends, in the sub-option of setting Option82 that back message using is taken back, search the addition Item field that comprises self node identification, transmit back message using according to the VLAN sign in the addition Item field that finds, module id and port-mark clean culture.
Fig. 7 is the structural representation of transferring equipment among the present invention, and this equipment comprises: information adding device and clean culture retransmission unit.
Above-mentioned information adding device, the sub-option of indication that is used for carrying at request message adds the routing information that receives this request message, transmits request message then.
Above-mentioned clean culture retransmission unit, be used to receive the Dynamic Host Configuration Protocol server back message using, in the sub-option of the indication that this back message using is taken back, search the routing information that the information adding device in the transferring equipment adds under self, transmit described back message using according to described routing information clean culture.
As seen, because Dynamic Host Configuration Protocol server can be with intact the taking back of the sub-option of indication in back message using, so transferring equipment can be searched the routing information that oneself adds in the sub-option of the indication that back message using carries, and know the path that self receives request message by this routing information, be the path that current back message using should clean culture be transmitted, can transmit back message using according to the routing information clean culture that finds thus.Because each transferring equipment has all been added the routing information that self receives this request message in the sub-option of the indication that request message carries, even so be connected with other transferring equipment in parallel more than two on certain transferring equipment, this transferring equipment is when receiving the request message of wherein certain other transferring equipment forwarding, the routing information of this request message from these other transferring equipment will be added in the sub-option of the indication in request message, when receiving back message using, just can be according to the routing information that oneself adds in the sub-option of the indication that back message using is taken back, which other transferring equipment the accurate in locating back message using should clean culture be forwarded to.
Transferring equipment among the present invention can be DHCP relay or DHCP Snooping.
Provide an embodiment of transferring equipment of the present invention below.
In the present embodiment, indicate sub-option for setting the sub-option of Option82, that introduces in the field in the sub-option of this setting Option82 and the preamble method is identical, repeats no more here.
Fig. 8 is the structural representation of information adding device in the embodiment of the invention, and this information adding device comprises: judge module, the first information add module and second information is added module.
Above-mentioned judge module, be used for judging whether request message comprises the sub-option sign of having filled in the sub-option of setting Option82 in the sub-option identification field of Option82 option and this Option82 option, if routing information second information that sends to of request message and reception request message is added module and is triggered second information interpolation module executable operations; Otherwise, the routing information of request message and reception request message is sent to first information interpolation module and triggers first information interpolation module executable operations.
The above-mentioned first information adds module, is used for adding the setting sub-option of Option82 and add the routing information that receives request message in the sub-option of setting Option82 at request message, transmits request message then.The first information here adds module when adding the routing information that receives request message, it specifically is an addition Item field of selecting to set in the sub-option of Option82, the node identification of transferring equipment under the interpolation self in the node identification field of this addition Item field, and in the VLAN of this addition Item field identification field, module id field and port-mark field, add VLAN sign, module id and the port-mark that receives request message respectively.
Above-mentioned second information is added module, is used for transmitting request message then setting the routing information that the sub-option of Option82 adds the reception request message.Second information is here added module when adding the routing information that receives request message, it specifically is an addition Item field of selecting to set in the sub-option of Option82, the node identification of transferring equipment under the interpolation self in the node identification field of this addition Item field, and in the VLAN of this addition Item field identification field, module id field and port-mark field, add VLAN sign, module id and the port-mark that receives request message respectively.
Fig. 9 is the structural representation of clean culture retransmission unit in the embodiment of the invention, and this clean culture retransmission unit comprises: search module and clean culture and transmit Executive Module.
The above-mentioned module of searching, be used to receive the Dynamic Host Configuration Protocol server back message using, in the sub-option of setting Option82 that back message using is taken back, search the addition Item field that comprises the node identification of transferring equipment under self, routing information with VLAN sign, module id and port-mark in the addition Item field that finds add as the information adding device in the transferring equipment under self sends to clean culture with back message using and the routing information that finds and transmits Executive Module.
Executive Module is transmitted in above-mentioned clean culture, is used for according to searching the routing information that module provides, and back message using is transmitted in clean culture.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the clean culture retransmission method of a dynamic host configuration protocol DHCP server response message is characterized in that, this method comprises:
Add the routing information that receives the described request message in the sub-option of the indication of transferring equipment in request message, transmit the described request message then;
Transferring equipment receives the Dynamic Host Configuration Protocol server back message using, searches the routing information that oneself adds in the sub-option of the indication that described back message using is taken back, and transmits described back message using according to described routing information clean culture.
2. the method for claim 1 is characterized in that, adds the routing information that receives the described request message in the sub-option of described indication in request message and comprises:
Transferring equipment judges that having filled in the sub-option of setting in the sub-option identification field that whether has comprised sub-option of indication and the sub-option of this indication in the request message identifies, if, the step of in the sub-option of indication, adding the routing information that receives the described request message, otherwise in request message, add the sub-option of indication earlier, then the step of in the sub-option of indication, adding the routing information that receives the described request message.
3. the method for claim 1 is characterized in that, the routing information that described interpolation receives the described request message comprises:
Select an addition Item field in the sub-option of indication, in the virtual LAN VLAN identification field and port-mark field of the addition Item field of selecting, add the VLAN sign and the port-mark that receive the described request message respectively.
4. method as claimed in claim 3 is characterized in that, the routing information that described interpolation receives the described request message further comprises:
In the module id field in the added field of selecting, add indication and receive the subcard of described request message or the module id of interface board.
5. as claim 3 or 4 described methods, it is characterized in that described interpolation further comprises when receiving the routing information of described request message: in the node identification field of the added field of selecting, add the node identification of self;
The described routing information that oneself adds of searching in the sub-option of the indication that described back message using is taken back is: search the addition Item field that comprises self node identification in the sub-option of the indication that described back message using is taken back, with the routing information of the routing information in the addition Item field that finds as oneself interpolation.
6. a transferring equipment is characterized in that, this equipment comprises:
The information adding device is used for adding the routing information that receives the described request message in the sub-option of the indication of request message, transmits the described request message then;
The clean culture retransmission unit, be used to receive dynamic host configuration protocol DHCP server response message, in the sub-option of the indication that described back message using is taken back, search the routing information that the information adding device in the transferring equipment adds under self, transmit described back message using according to described routing information clean culture.
7. equipment as claimed in claim 6 is characterized in that, described information adding device comprises: judge module, the first information add module and second information is added module;
Described judge module, be used for judging whether the request message that receives has comprised the sub-option sign of having filled in setting in the sub-option identification field of indicating sub-option and the sub-option of this indication, if routing information second information that sends to of described request message and reception described request message is added module and is triggered second information interpolation module executable operations; Otherwise, the routing information of described request message and reception described request message is sent to first information interpolation module and triggers first information interpolation module executable operations;
The described first information adds module, is used for adding the sub-option of indication and add the routing information that receives the described request message in the sub-option of indication at the described request message, transmits the described request message then;
Described second information is added module, is used for adding the routing information that receives the described request message at the sub-option of indication, transmits the described request message then.
8. equipment as claimed in claim 7, it is characterized in that, the described first information adds module and second information is added the routing information that module is added reception described request message, be specially an added field of selecting in the sub-option of indication, in the VLAN identification field of the addition Item field of selecting and port-mark field, add VLAN sign and the port-mark that receives the described request message respectively.
9. equipment as claimed in claim 8, it is characterized in that, the described first information adds module and second information interpolation module is further used for, and in the module id field of the added field of selecting, adds indication and receives the subcard of described request message or the module id of interface board.
10. equipment as claimed in claim 8 or 9 is characterized in that, the described first information adds module and second information and adds module and be further used for, and adds the node identification of transferring equipment under self in the added field of selecting;
Described clean culture retransmission unit comprises: search module and clean culture and transmit Executive Module;
The described module of searching, be used to receive the Dynamic Host Configuration Protocol server back message using, in the sub-option of the indication that described back message using is taken back, search the addition Item field that comprises the node identification of transferring equipment under self, routing information with the routing information in the addition Item field that finds adds as the information adding device in the transferring equipment under self sends to clean culture with back message using and the routing information that finds and transmits Executive Module;
Executive Module is transmitted in described clean culture, is used for searching the routing information that module provides according to described, and described back message using is transmitted in clean culture.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101051562A CN102185766A (en) | 2011-04-26 | 2011-04-26 | Unicast forwarding method and forwarding equipment for responding messages by DHCP (Dynamic host configuration protocol) server |
| PCT/CN2012/073462 WO2012146120A1 (en) | 2011-04-26 | 2012-04-01 | Method for forwarding response packet from dhcp server, forwarding device and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101051562A CN102185766A (en) | 2011-04-26 | 2011-04-26 | Unicast forwarding method and forwarding equipment for responding messages by DHCP (Dynamic host configuration protocol) server |
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| CN102325200A (en) * | 2011-09-22 | 2012-01-18 | 杭州华三通信技术有限公司 | Method for rapidly acquiring IPv6 (Internet Protocol Version 6) address and DHCP (Dynamic Host Configuration Protocol) snooping equipment |
| WO2012146120A1 (en) * | 2011-04-26 | 2012-11-01 | Hangzhou H3C Technologies Co., Ltd. | Method for forwarding response packet from dhcp server, forwarding device and system |
| CN102857587A (en) * | 2012-08-17 | 2013-01-02 | 福建三元达通讯股份有限公司 | Method and system for sharing dynamic address pool in multi-virtual local area network (VLAN) environment |
| CN103634844A (en) * | 2012-08-24 | 2014-03-12 | 中兴通讯股份有限公司 | Method and system for realizing distributed multi-port DHCP relay |
| CN104253878A (en) * | 2014-09-09 | 2014-12-31 | 烽火通信科技股份有限公司 | VLAN (Virtual Local Area Network) information management system and method of DHCP (Dynamic Host Configuration Protocol) RELAY termination sub-interface |
| WO2016179996A1 (en) * | 2015-05-11 | 2016-11-17 | 中兴通讯股份有限公司 | User access control method and dhcp relay |
| CN106789165A (en) * | 2016-11-28 | 2017-05-31 | 上海斐讯数据通信技术有限公司 | The network configuration system and method for a kind of batch cloud terminal device |
| CN107154887A (en) * | 2017-05-16 | 2017-09-12 | 深圳市茁壮网络股份有限公司 | Determine the method and device of virtual LAN VLAN identification number |
| CN110324371A (en) * | 2018-03-29 | 2019-10-11 | 北京忆芯科技有限公司 | Distributed KV storage system based on block |
| CN114363294A (en) * | 2020-09-27 | 2022-04-15 | 华为云计算技术有限公司 | Tenant server management method, device and system |
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