CN108259644A - A kind of communication equipment and its ARP entry generation method - Google Patents
A kind of communication equipment and its ARP entry generation method Download PDFInfo
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- CN108259644A CN108259644A CN201810051269.0A CN201810051269A CN108259644A CN 108259644 A CN108259644 A CN 108259644A CN 201810051269 A CN201810051269 A CN 201810051269A CN 108259644 A CN108259644 A CN 108259644A
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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
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0807—Network architectures or network communication protocols for network security for authentication of entities using tickets, e.g. Kerberos
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention provides the communication equipment applied to optical line terminal and its ARP entry generation method, wherein this method includes：Exchange chip receives ARP messages by connecting the first chip port of the first PON chips；Exchange chip adds the first chip port mark and Q in Q labels for the ARP messages, and above-mentioned ARP messages are sent to CPU；CPU carries out safety certification to the vlan information of the Q in Q labels of ARP messages, determines through safety certification, generates ARP entry according to the first chip port mark and the ARP messages, the ARP entry of generation is synchronized to exchange chip；Wherein, the exit port of ARP entry is the first chip port.The present invention can make full use of exchange chip existing protocol message rate-limiting and attack protection function, avoid impact of the ARP messages to host CPU by being sent ARP messages from exchange chip to host CPU.
Description
Technical field
The present invention relates to communication technique field, more particularly to passive optical-fiber network, more particularly, to a kind of communication equipment and
Its ARP entry generation method.
Background technology
ARP (Address Resolution Protocol, address resolution protocol) is that IP address is resolved to Ethernet
The agreement of MAC (Media Access Control, media access control) address, the list item of ARP generations are issued to exchange chip
FIB (Forward Information Base, forwarding information table) in, guidance three layer data flows forwarding.Wherein, fib table
Item is mainly by IP address, MAC Address, VLAN (Virtual Local Area Network, virtual LAN) and outgoing interface structure
Into.
In PON (Passive Optical Network, passive optical-fiber network) system, OLT (Optical Line
Terminal, optical line terminal) equipment exchange chip port (calling GE mouthfuls in the following text) connection PON chips upper united mouth, Mei Gejiao
Multiple PON chips can be connected by changing chip；Each PON chips are equipped with 20~40 PON mouthfuls, and each PON mouthfuls is connected by optical splitter
Multiple ONU (Optical Network Unit, optical network unit) equipment.
Fig. 1 show the existing process of the ARP entry of OLT device study ONU.As shown in Figure 1, PON chips pass through PON mouthfuls
ARP protocol message is received, ONU interface indexes is added, the ARP messages with ONU interface indexes is sent to host CPU.Host
Its outgoing interface is recorded as the ONU interfaces of ONU interface indexes direction by CPU parsing ARP message generation ARP entry.Host CPU will
The GE mouths (in such as Fig. 2 G1 mouthfuls) of PON chips will where the exit port of the ARP entry of generation is revised as PON mouthfuls of exchange chip connection
The ARP entry for having modified exit port is re-synchronised to.
The problem of existing scheme, is, since ARP messages are sent to CPU by multiple PON chips of OLT device, CPU can be made
Into impact.In addition, when the PON mouths of ONU equipment from a PON chip move to the PON mouths of other PON chips, if do not had
The exit port of the triggering ARP entry update of ARP messages, exchange chip and the ARP entry on CPU can not update.It is received as OLT
Retransmission failure can be generated by being sent to the three layer data message of downlink of migration ONU equipment.
Invention content
In consideration of it, the purpose of the present invention is to provide a kind of communication equipment and its ARP entry generation method, ARP is avoided to report
Impact of the text to host CPU.
To achieve the above object, an embodiment of the present invention provides a kind of ARP entry generation method, including：
Exchange chip receives ARP messages by connecting the first chip port of the first PON chips；
Exchange chip adds the first chip port mark and Q-in-Q labels for ARP messages, will have the first die terminals
The ARP messages of mouth mark and Q-in-Q labels are sent to CPU；
CPU carries out safety certification to the vlan informations of the Q-in-Q labels of ARP messages, determine through safety certification, according to
First chip port identifies and ARP messages generation ARP entry, and the ARP entry of generation is synchronized to exchange chip；
Wherein, the MAC Address of ARP entry and IP address are transmitting terminal MAC Address and the transmitting terminal IP of ARP messages respectively
Location；The exit port of ARP entry is the first chip port.
To achieve the above object, the embodiment of the present invention also provides a kind of communication equipment, including：More than two PON chips are handed over
Change chip and CPU；
Exchange chip receives ARP messages by connecting the first chip port of the first PON chips；
Exchange chip adds the first chip port mark and Q-in-Q labels for ARP messages, will have the first die terminals
The ARP messages of mouth mark and Q-in-Q labels are sent to CPU；
CPU carries out safety certification to the vlan informations of the Q-in-Q labels of ARP messages, determine through safety certification, according to
First chip port identifies and ARP messages generation ARP entry, and the ARP entry of generation is synchronized to exchange chip；
Wherein, the MAC Address of ARP entry and IP address are transmitting terminal MAC Address and the transmitting terminal IP of ARP messages respectively
Location；The exit port of ARP entry is the first chip port.
The embodiment of the present invention brings following advantageous effect：The PON chips of OLT device are by exchange chip by ARP messages
Host CPU is sent to, impact of the ARP messages to host CPU is avoided, speed limit and attack protection function based on exchange chip subtract
Few impact to CPU.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
For the above objects, features and advantages of the present invention is enable to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the schematic diagram for the existing way that OLT device learns ARP entry；
The flow chart of ARP entry generation method that Fig. 2 is provided by the embodiment of the present invention；
The schematic diagram of OLT device study ARP entry process that Fig. 3 is provided by Fig. 2 embodiments；
The flow chart of safety certification that Fig. 4 is generated by the ARP entry that Fig. 2 embodiments provide；
Fig. 5 is the flow chart of ARP entry generation method that another embodiment of the present invention provides；
Fig. 6 is the flow chart of safety certification in Fig. 5 embodiments；
The structure diagram for the communication equipment that Fig. 7 is provided by the embodiment of the present invention.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiment be part of the embodiment of the present invention rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, shall fall within the protection scope of the present invention.
ARP entry generation method shown in Fig. 2 is applied to OLT device, which has two or more PON chips, hands over
Change chip and CPU.As shown in Fig. 2, this method includes the following steps：
S201：Exchange chip receives ARP messages by connecting the first chip port of the first PON chips.
In practical applications, ARP request message or gratuitous ARP packet, the exchange core of OLT device can be transmitted in ONU equipment
Piece can receive above-mentioned ARP messages by the first chip port P11 of the first PON chips connected to it.
S202：Exchange chip adds the first chip port mark and Q-in-Q labels for ARP messages, will have the first core
The ARP messages of piece port-mark and Q-in-Q labels are sent to CPU.
S203：CPU carries out safety certification to the vlan information of the Q-in-Q labels of ARP messages, determines through safety certification,
According to the first chip port mark and ARP messages generation ARP entry, the ARP entry of generation is synchronized to exchange chip.
Wherein, the MAC Address of ARP entry and IP address are transmitting terminal MAC Address and the transmitting terminal IP of ARP messages respectively
Location；The exit port of ARP entry is the first chip port P11.
Above-mentioned CPU carries out safety certification to the vlan information of the Q-in-Q labels of ARP messages and refers to that CPU is according to preset
Whether the vlan information of the Q-in-Q labels of safety certification list lookup ARP messages is scheduled safe VLAN.
Shown in Figure 3, the Q-in-Q messages of exchange chip to the CPU ARP messages sent carry GE mouthfuls of interface indexes,
That is outgoing interface, P11 mouthfuls of the PON mouths such as ONU connections in Fig. 3 are G1 mouthfuls corresponding.Then in Q-in-Q labels of the CPU according to addition
Outside VLAN information carries out safety certification, that is, judges whether vlan information is some VLAN specified, if it is, generation APR
List item, then the ARP entry is synchronized in exchange chip.
The detailed process for generating ARP entry is as follows：CPU parsed from ARP messages outgoing interface, transmitting terminal IP address and
Transmitting terminal MAC Address generates ARP entry, and wherein outgoing interface receives the GE ports of ARP messages (in Fig. 3 for exchange chip
G1)。
In above process, ARP messages are sent to host CPU by the PON chips of OLT device by exchange chip, are avoided
Impact of the ARP messages to host CPU, the speed limit and attack protection function realized based on exchange chip reduce the impact to CPU.
Performing step S201：Exchange chip by connect the first chip port of the first PON chips receive ARP messages it
Before, the method that the embodiment of the present invention is provided is further comprising the steps of, shown in Figure 4：
S401：First PON chips pass through the first PON mouthfuls of reception ARP messages.
Specifically, the first PON mouthfuls of P11 of the first PON chips, which are connected, receives the ARP messages from ONU.
S402：First PON chips find the first PON mouthfuls of matched first redirection list items, according to the first re-direction table
The specified outgoing interface of item forwards ARP messages to the first chip port of exchange chip.
After the first PON chips receive the ARP messages from the network equipment, other processing are not done to the ARP messages, only
It is that ARP messages are further transmitted to exchange chip, specifically, the first PON chips are first looked for the first PON mouthfuls of P11 matchings
First redirect list item, then according to first redirect list item specified outgoing interface, i.e. outgoing interface corresponding to PON mouthfuls of P11
ARP messages are forwarded to exchange chip by G1.
In addition, the method that the embodiment of the present invention is provided is further comprising the steps of, it is shown in Figure 5：
S501：Exchange chip receives Ethernet data message by connecting the second chip port of the 2nd PON chips.
Exchange chip can receive Ethernet data by the second chip port P21 of the 2nd PON chips connected to it
Message.
S502：Exchange chip determines that the source MAC of Ethernet data message is the MAC Address of ARP entry, is Ethernet
Data message adds the second chip port mark and Q-in-Q labels, will have the second chip port mark and Q-in-Q labels
Ethernet data message be sent to CPU.
The port that the exchange chip of OLT device receives Ethernet data message is matched with the source MAC of ether network packet
ARP entry exit port it is inconsistent, judge occur ONU migration, then actively trigger ARP entry update.
S503：CPU carries out safety certification to the Q-in-Q labels of Ethernet data message, determines through safety certification, base
Matched ARP entry is found in the source MAC of Ethernet data message；The exit port of ARP entry is updated to the second core
Piece port.
CPU carries out safety certification to the vlan information of the Q-in-Q labels of Ethernet data message and refers to, CPU is according to default
The vlan information of Q-in-Q labels of safety certification list lookup Ethernet data message whether be scheduled safe VLAN.
Specifically, CPU is in the mark added with Q-in-Q labels and the second chip port P21 for receiving exchange chip transmission
After the Ethernet data message of knowledge, the outside VLAN information in the Q-in-Q labels of addition carries out safety certification, that is, judges
Whether vlan information is some VLAN specified, if so, the source MAC based on Ethernet data message find it is matched
ARP entry；The exit port of ARP entry is updated to the second chip port P21.
S504：The ARP entry for having updated exit port is synchronized to exchange chip by CPU.
By method shown in fig. 5, when ONU equipment is in the PON mouths migration of the different PON chips of OLT device, OLT device
Exchange chip based on data message determine occur ONU migration, actively trigger ARP entry update, it is not necessary to wait for ONU equipment
The ARP entry of ARP messages triggering avoids the ARP entry exit port of the ONU of migration from not updating three layers of traffic messages of caused downlink
Loss problem.
Before step S501 shown in Fig. 5, this method is further comprising the steps of, shown in Figure 6：
S601：2nd PON chips pass through the 2nd PON mouthfuls of reception Ethernet data messages.
Specifically, the 2nd PON mouthfuls of P21 of the 2nd PON chips, by optical network unit ONU, reception comes and ether netting index
According to message.
S602：2nd PON chips find the 2nd PON mouthfuls of matched second redirection list items, according to the second re-direction table
The specified outgoing interface of item forwards Ethernet data message to the second chip port of exchange chip.
After the 2nd PON chips receive Ethernet data message, further search for the 2nd PON mouthfuls of P21 matched
Two redirect list item, the specified outgoing interface for then redirecting list item according to second, i.e. outgoing interface G5 corresponding to PON mouthfuls of P21, will
ARP messages are forwarded to exchange chip.
In the present invention, when exchange chip detects that ONU equipment is migrated according to data message, data message is sent to
CPU, the ARP entry of the ONU equipment of triggering CPU update migrations, then updated ARP entry is synchronized to exchange chip by CPU
In, that is, avoid impact of the ARP messages to host CPU, and the actively ARP entry update of triggering migration ONU.In this way, it avoids
The loss of three layers of traffic messages of downlink caused by migration ONU equipment does not send ARP messages actively.
The embodiment of the present invention also provides the communication equipment that a kind of application is OLT, and shown in Figure 7, which includes：Two
More than PON chips, such as：First PON chips 711, the 2nd PON chips 712)；Exchange chip 72 and CPU73.
Wherein, exchange chip 72 receives ARP messages by connecting the first chip port of the first PON chips 711；Exchange core
Piece 72 adds the first chip port mark and Q-in-Q labels for ARP messages, will have the first chip port mark and Q-in-
The ARP messages of Q labels are sent to CPU73；CPU73 carries out safety certification to the vlan information of the Q-in-Q labels of ARP messages, really
It is fixed that ARP entry is through safety certification generated according to the first chip port mark and ARP messages, by the ARP entry synchronization of generation
To exchange chip 72；Wherein, the MAC Address of ARP entry and IP address are transmitting terminal MAC Address and the transmission of ARP messages respectively
Hold IP address；The exit port of ARP entry is the first chip port.
In the present embodiment, the first PON chips 711 pass through the first PON mouthfuls of reception ARP messages；First PON chips 711 are looked into
The first PON mouthfuls of matched first redirection list items are found, the specified outgoing interface forwarding ARP messages of list item are redirected extremely according to first
First chip port of exchange chip 72.
Exchange chip 72 receives Ethernet data message by connecting the second chip port of the 2nd PON chips 712；It exchanges
Chip 72 determines that the source MAC of Ethernet data message is the MAC Address of ARP entry, for Ethernet data message addition the
Two chip ports identify and Q-in-Q labels, by the Ethernet data report with the second chip port mark and Q-in-Q labels
Text is sent to CPU73；CPU73 carries out safety certification to the Q-in-Q labels of Ethernet data message, determines through safety certification,
Source MAC based on Ethernet data message finds matched ARP entry；The exit port of ARP entry is updated to second
Chip port；The ARP entry for having updated exit port is synchronized to exchange chip 72 by CPU73.
2nd PON chips 712 pass through the 2nd PON mouthfuls of reception Ethernet data messages；PON chips find the 2nd PON mouthfuls
Matched second redirects list item, and Ethernet data message is forwarded to exchanging core according to the specified outgoing interface of the second redirection list item
Second chip port of piece 72.
CPU73 carries out safety certification to the vlan information of the Q-in-Q labels of ARP messages and refers to that CPU73 is according to preset
Whether the vlan information of the Q-in-Q labels of safety certification list lookup ARP messages is scheduled safe VLAN；CPU73 is to ether
The vlan information of the Q-in-Q labels of network data message carries out safety certification and refers to that CPU73 is according to preset safety certification list
Whether the vlan information for searching the Q-in-Q labels of Ethernet data message is scheduled safe VLAN.
It is apparent to those skilled in the art that for convenience and simplicity of description, the equipment of foregoing description
Specific work process, can refer to preceding method embodiment in corresponding process, details are not described herein.The embodiment of the present invention carries
The communication equipment of confession has identical technical characteristic, so can also solve with the ARP entry generation method that above-described embodiment provides
The technical issues of identical, reaches identical technique effect.
In the description of the present invention, term " first ", " second ", " third " are only used for description purpose, and it is not intended that
Instruction implies relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, therefore, protection scope of the present invention described should be subject to the protection scope in claims.
Claims (10)
1. a kind of ARP entry generation method, which is characterized in that including：
Exchange chip receives ARP messages by connecting the first chip port of the first PON chips；
The exchange chip adds the first chip port mark and Q-in-Q labels for the ARP messages, will have described the
One chip port identifies and the ARP messages of the Q-in-Q labels are sent to CPU；
The CPU carries out safety certification to the vlan information of the Q-in-Q labels of the ARP messages, determines through safety certification,
According to first chip port mark and ARP messages generation ARP entry, the ARP entry of generation is synchronized to described
Exchange chip；
Wherein, the MAC Address of the ARP entry and IP address are the transmitting terminal MAC Address and transmitting terminal of the ARP messages respectively
IP address；The exit port of the ARP entry is first chip port.
2. according to the method described in claim 1, it is characterized in that, the first core that exchange chip passes through the first PON chips of connection
Before piece port receives ARP messages, the method further includes：
First PON chips pass through the first PON mouthfuls of reception ARP messages；
The first PON chips find the described first PON mouthfuls of matched first redirection list items, are redirected according to described first
The specified outgoing interface of list item forwards the ARP messages to the first chip port of the exchange chip.
3. it according to the method described in claim 1, it is characterized in that, further includes：
The exchange chip receives Ethernet data message by connecting the second chip port of the 2nd PON chips；
The exchange chip determines that the source MAC of the Ethernet data message is the MAC Address of the ARP entry, for institute
It states Ethernet data message and adds the second chip port mark and Q-in-Q labels, will have second chip port mark
The CPU is sent to the Ethernet data message of Q-in-Q labels；
The CPU carries out safety certification to the Q-in-Q labels of the Ethernet data message, determines through safety certification, to be based on
The source MAC of the Ethernet data message finds the matched ARP entry；By the exit port of the ARP entry more
It is newly second chip port；
The ARP entry for having updated exit port is synchronized to the exchange chip by the CPU.
4. according to the method described in claim 3, it is characterized in that, the second core that exchange chip passes through the 2nd PON chips of connection
Before piece port receives Ethernet data message, the method further includes：
2nd PON chips pass through the 2nd PON mouthfuls of reception Ethernet data messages；
The PON chips find the described 2nd PON mouthfuls of matched second redirection list items, and list item is redirected according to described second
Specified outgoing interface forward the Ethernet data message to the second chip port of the exchange chip.
5. according to the method described in claim 4, it is characterized in that,
The CPU carries out safety certification to the vlan information of the Q-in-Q labels of the ARP messages and refers to, the CPU is according to pre-
If safety certification list lookup described in the vlan informations of Q-in-Q labels of ARP messages whether be scheduled safe VLAN；
The CPU carries out safety certification to the vlan information of the Q-in-Q labels of the Ethernet data message and refers to, the CPU
According to the vlan information of the Q-in-Q labels of Ethernet data message described in the preset safety certification list lookup whether be
Scheduled safe VLAN.
6. a kind of communication equipment, which is characterized in that including：More than two PON chips, exchange chip and CPU；
The exchange chip receives ARP messages by connecting the first chip port of the first PON chips；
The exchange chip adds the first chip port mark and Q-in-Q labels for the ARP messages, will have described the
One chip port identifies and the ARP messages of the Q-in-Q labels are sent to CPU；
The CPU carries out safety certification to the vlan information of the Q-in-Q labels of the ARP messages, determines through safety certification,
According to first chip port mark and ARP messages generation ARP entry, the ARP entry of generation is synchronized to described
Exchange chip；
Wherein, the MAC Address of the ARP entry and IP address are the transmitting terminal MAC Address and transmitting terminal of the ARP messages respectively
IP address；The exit port of the ARP entry is first chip port.
7. communication equipment according to claim 6, which is characterized in that
The first PON chips pass through the first PON mouthfuls of reception ARP messages；
The first PON chips find the described first PON mouthfuls of matched first redirection list items, are redirected according to described first
The specified outgoing interface of list item forwards the ARP messages to the first chip port of the exchange chip.
8. device according to claim 6, which is characterized in that
The exchange chip receives Ethernet data message by connecting the second chip port of the 2nd PON chips；
The exchange chip determines that the source MAC of the Ethernet data message is the MAC Address of the ARP entry, for institute
It states Ethernet data message and adds the second chip port mark and Q-in-Q labels, will have second chip port mark
The CPU is sent to the Ethernet data message of Q-in-Q labels；
The CPU carries out safety certification to the Q-in-Q labels of the Ethernet data message, determines through safety certification, to be based on
The source MAC of the Ethernet data message finds the matched ARP entry；By the exit port of the ARP entry more
It is newly second chip port；
The ARP entry for having updated exit port is synchronized to the exchange chip by the CPU.
9. communication equipment according to claim 8, which is characterized in that
The 2nd PON chips pass through the 2nd PON mouthfuls of reception Ethernet data messages；
The PON chips find the described 2nd PON mouthfuls of matched second redirection list items, and list item is redirected according to described second
Specified outgoing interface forward the Ethernet data message to the second chip port of the exchange chip.
10. communication equipment according to claim 9, which is characterized in that
The CPU carries out safety certification to the vlan information of the Q-in-Q labels of the ARP messages and refers to, the CPU is according to pre-
If safety certification list lookup described in the vlan informations of Q-in-Q labels of ARP messages whether be scheduled safe VLAN；
The CPU carries out safety certification to the vlan information of the Q-in-Q labels of the Ethernet data message and refers to, the CPU
According to the vlan information of the Q-in-Q labels of Ethernet data message described in the preset safety certification list lookup whether be
Scheduled safe VLAN.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112333097A (en) * | 2020-09-29 | 2021-02-05 | 新华三信息安全技术有限公司 | Message forwarding method and device and gateway equipment |
| CN114531414A (en) * | 2022-01-07 | 2022-05-24 | 锐捷网络股份有限公司 | Terminal migration acceleration method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112333097A (en) * | 2020-09-29 | 2021-02-05 | 新华三信息安全技术有限公司 | Message forwarding method and device and gateway equipment |
| CN112333097B (en) * | 2020-09-29 | 2022-05-24 | 新华三信息安全技术有限公司 | Message forwarding method and device and gateway equipment |
| CN114531414A (en) * | 2022-01-07 | 2022-05-24 | 锐捷网络股份有限公司 | Terminal migration acceleration method and device |
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