CN103780444A - Loop automatic detection device and method in EoC network - Google Patents
Loop automatic detection device and method in EoC network Download PDFInfo
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- CN103780444A CN103780444A CN201210398959.6A CN201210398959A CN103780444A CN 103780444 A CN103780444 A CN 103780444A CN 201210398959 A CN201210398959 A CN 201210398959A CN 103780444 A CN103780444 A CN 103780444A
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Abstract
The invention provides a loop automatic detection device and method in an EoC network. The device comprises: an EoC terminal apparatus comprising an Ethernet exchanger chip supporting the loop automatic detection function and a storage chip in which the Port-based VLAN configuration is stored, wherein when the EoC terminal apparatus is powered on, the Port-based VLAN configuration is executed to perform isolation among user network ports on the Ethernet exchanger chip; an EoC front-end apparatus for enabling the loop automatic detection function of the Ethernet exchanger chip in a remote manner and inquiring the loop detection result of the Ethernet exchanger chip regularly, wherein when the occurrence of a loop is detected, then the uplink and downlink communication of the EoC terminal apparatus generating the loop is interrupted; and an EoC network background management system for receiving the loop alarm sent by the EoC front-end apparatus. According to the invention, the automatic detection and exclusion of loop problems in the EoC network can be realized through a cable bridge switchboard, so the broadcast storm of the EoC network caused by loops can be effectively avoided, and at the same time, the effective management and troubleshooting of loop failures in the EoC network can also be realized.
Description
Technical field
The invention belongs to EoC communication technical field, relate to a kind of loop detecting method, particularly relate to loop automatic detection device and method in a kind of EoC network.
Background technology
Utilize and carry out Ethernet data transmission (Ethernet over Coax based on coaxial cable medium, being called for short EoC) technology carries out bidirectional rebuilding to cable TV network, can utilize original optical fiber/coaxial (Hybrid Fiber Coax of mixing, being called for short HFC) network is traditional cable television service, broadband access network business and call voice business, realize and merging by IP technology, to reach efficient, high-quality, to improve target cheaply.And be as far as possible in the situation that utilizing conventional network resources, realize Fiber-To-The-Building, coaxially arrive family, reduced the wasting of resources that repeated construction brings.In EoC technology, we are called cable bridge switch headend equipment, and terminal equipment is called cable bridge terminals.Under this technical background, cable bridge terminals is arranged on the indoor of user, and user's behavior and household internal networking are uncontrollable.As shown in Figure 1, as the UNI(User Network Interface of EoC terminal (being cable bridge terminals)) connect between port while there is loop on the second line of a couplet equipment of loop or EoC terminal, can cause producing broadcast storm in EoC network, affect other user's business and even the communication of whole EoC network.
Existing Spanning-Tree Protocol (Spanning Tree Protocol is called for short STP) reaches by blocking selectively Network the Redundancy Link the redundancy the object of eliminating network loop, possesses the backup functionality of link simultaneously.Whether, in the local area network (LAN) of an expansion, the switch of all participation STP can detect and eliminate the loop in network, have loop to exist but can't detect in external network.Therefore STP is applicable to the LAN environment of one or more switch compositions, and is not suitable for the application scenarios of EoC network.
In addition, those skilled in the art also propose a kind of method that realizes loop detection on EoC equipment, the method comprises: local side management equipment is sequentially set the identifier of each user terminal, in the protocol massages sending in local side management equipment, add the identifier for different user terminals, each user terminal receives after message, by packet filtering mechanism, only allows the protocol massages that meets this user terminal identifier pass through, other protocol massages abandons, and its flow process is referring to Fig. 2; In the time that local side management equipment receives the protocol massages that loop returns, check that the identifier in message has produced loop with regard to knowing the user under which platform user terminal.The method makes can realize loop detection in all EoC systems, does not need special EoC chip to identify the source user terminal of message, has reduced the cost of system, has improved the efficiency and the practicality that detect simultaneously.But along with the business of EoC system increases, the quantity of message also increases severely, realize in this case each message is added to indications and filtration, be a huge test to the disposal ability of system itself undoubtedly, and have a strong impact on the transmission speed of message, network congestion easily occurs.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide loop automatic detection device and method in a kind of EoC network, for realizing automatic detection and the eliminating of loop problem of EoC network.
For achieving the above object and other relevant objects, the invention provides loop automatic detection device and method in a kind of EoC network.
A loop automatic detection device in EoC network, comprises EoC terminal equipment, EoC headend equipment, EoC net background management system; Described EoC terminal equipment comprises Ethernet switching chip and storage chip; Described Ethernet switching chip support loop automatic detection function; Described storage chip is preserved Port-based VLAN configuration; When described EoC terminal equipment powers on, carrying out described Port-based VLAN configuration will isolate between the user network port in Ethernet switching chip; Described EoC headend equipment is connected with described EoC terminal equipment, in order to the loop automatic detection function of Ethernet switching chip described in remote opening, and regularly inquires about the loop detection result of Ethernet switching chip; If detected, loop produces, and EoC headend equipment interrupts the uplink and downlink communication of the EoC terminal equipment that produces loop; Described EoC net background management system is connected with described EoC headend equipment, the loop warning sending in order to receive EoC headend equipment.
Preferably, described Ethernet switching chip comprises at least 2 user network ports.
Preferably, described EoC headend equipment comprises CPU, and described CPU judges in order to the buffer status position by reading described Ethernet switching chip whether EoC terminal equipment produces loop.
Preferably, described storage chip is FLASH.
A loop automatic testing method in EoC network, the loop automatic testing method in described EoC network comprises:
Step 1, when EoC terminal equipment powers on, carries out the Port-based VLAN configuration of self preserving, and will between the user network port in the Ethernet switching chip of support loop automatic detection function, isolate;
Step 2, when EoC terminal equipment is reached the standard grade, the loop automatic detection function of Ethernet switching chip described in EoC headend equipment remote opening, and regularly inquire about the loop detection result of Ethernet switching chip; If detected, loop produces, and interrupts the uplink and downlink communication of the EoC terminal equipment that produces loop, and sends the user network port alarm that produces loop to EoC net background management system.
Preferably, the specific implementation process of the uplink and downlink communication of the EoC terminal equipment of described interruption generation loop is: the first line of a couplet port of the Ethernet switching chip in EoC terminal equipment is set to Blocking state.
Preferably, described step 2 also comprises: described EoC headend equipment in interrupting producing the uplink and downlink communication of EoC terminal equipment of loop, record interrupted EoC terminal equipment No. ID.
Preferably, described step 2 also comprises: have loop to exist if EoC headend equipment can't detect on EoC terminal equipment within a period of time, recover the uplink and downlink communication of interrupted EoC terminal equipment before, and remove No. ID of the interrupted EoC terminal equipment recording before.
Preferably, before described recovery, the specific implementation process of the uplink and downlink communication of interrupted EoC terminal equipment is: the first line of a couplet port of the Ethernet switching chip in EoC terminal equipment is set to Forwarding state.
As mentioned above, loop automatic detection device and method in EoC network of the present invention, have following beneficial effect:
The present invention has realized automatic detection and the eliminating of the loop problem in EoC network by cable bridge switch, effectively avoid EoC network to produce broadcast storm because of loop, can detect in real time the loop condition of EoC network, loop terminal information exchange in EoC network can also be crossed to the mode reporting equipment webmaster of alarm, realize the loop fault in EoC network is efficiently managed and investigated simultaneously.
Accompanying drawing explanation
Fig. 1 is shown as the sight schematic diagram that occurs loop in existing EoC network.
Fig. 2 is shown as the existing method flow schematic diagram of realizing loop detection on EoC equipment.
Fig. 3 is shown as the structural representation of the loop automatic detection device in EoC network of the present invention.
Fig. 4 is shown as the schematic flow sheet of the loop automatic testing method in EoC network of the present invention.
Element numbers explanation
1 EoC terminal equipment;
2 EoC headend equipments;
3 EoC net background management systems;
11 Ethernet switching chip;
12 storage chips.
Embodiment
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification.The present invention can also be implemented or be applied by other different embodiment, and the every details in this specification also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
Refer to accompanying drawing.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy and only show with assembly relevant in the present invention in graphic but not component count, shape and size drafting while implementing according to reality, when its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
Embodiment
The present embodiment provides the loop automatic detection device in a kind of EoC network, as shown in Figure 3, comprises EoC terminal equipment 1, EoC headend equipment 2, EoC net background management system 3.
Described EoC terminal equipment 1 comprises Ethernet switching chip 11 and storage chip 12; Described Ethernet switching chip 11 support loop automatic detection functions; Described storage chip 12 is preserved the VLAN of Port-based VLAN(based on port) configuration.When described EoC terminal equipment powers on, carrying out described Port-based VLAN configuration will isolate between the user network port in Ethernet switching chip.Further, described Ethernet switching chip comprises at least 2 user network ports.Described storage chip is FLASH.
Described EoC headend equipment 2 is connected with described EoC terminal equipment 1, in order to the loop automatic detection function of Ethernet switching chip described in remote opening 11, and regularly inquires about the loop detection result of Ethernet switching chip.If detected, loop produces, and EoC headend equipment interrupts the uplink and downlink communication of the EoC terminal equipment that produces loop.Further, described EoC headend equipment comprises CPU, and described CPU judges in order to the buffer status position by reading described Ethernet switching chip whether EoC terminal equipment produces loop.
Described EoC net background management system 3 is connected with described EoC headend equipment 2, the loop warning sending in order to receive EoC headend equipment 2.
The present embodiment also provides the loop automatic testing method in a kind of EoC network, and as shown in Figure 4, the loop automatic testing method in described EoC network comprises:
Step 1, when EoC terminal equipment powers on, carries out the Port-based VLAN configuration of self preserving, and will between the user network port in the Ethernet switching chip of support loop automatic detection function, isolate;
Step 2, when EoC terminal equipment is reached the standard grade, the loop automatic detection function of Ethernet switching chip described in EoC headend equipment remote opening, and regularly inquire about the loop detection result of Ethernet switching chip; If detected, loop produces, and interrupts the uplink and downlink communication of the EoC terminal equipment that produces loop, No. ID of simultaneously recording interrupted EoC terminal equipment, and send the user network port alarm that produces loop to EoC net background management system; Further, the specific implementation process of the uplink and downlink communication of the EoC terminal equipment of described interruption generation loop is: the first line of a couplet port of the Ethernet switching chip in EoC terminal equipment is set to Blocking state.Before described recovery, the specific implementation process of the uplink and downlink communication of interrupted EoC terminal equipment is: the first line of a couplet port of the Ethernet switching chip in EoC terminal equipment is set to Forwarding state.
Step 3, has loop existence if EoC headend equipment can't detect on EoC terminal equipment within a period of time, recovers the uplink and downlink communication of interrupted EoC terminal equipment before, and removes No. ID of the interrupted EoC terminal equipment recording before.
The end product of the multiport that the EoC terminal equipment (be called for short EoC terminal) that the present invention adopts can be integrated Ethernet switching chip (abbreviation exchange chip), and exchange chip support loop detection (Loop Detect) function.First in the FLASH of EoC terminal, preserve Port-based VLAN configuration, in the time that EoC terminal powers on, just carrying out Port-based VLAN configures user network port (the UserNetwork Interface of Ethernet switching chip, be called for short UNI) between isolate, while avoiding forming loop between the uni port of EoC terminal, produce broadcast storm.In the time that terminal is reached the standard grade, the Loop Detect function of the CPU management remote opening terminal switch chip of EoC headend equipment, and the Loop Detect result of regular inquiry terminal exchange chip.EoC front end management CPU judges in this terminal, whether to produce loop by the relevant buffer status position of reading terminals exchange chip, if there is loop to produce in EoC terminal, the first line of a couplet port of the exchange chip of EoC front end management CPU EoC terminal is set to Blocking state and interrupts the communication of EoC terminal up-downlink direction, to prevent that descending data from being sent to first line of a couplet equipment by loopback, and record produces the EoC Termination ID number of loop, send the alarm of EoC terminal prot generation loop to background net management simultaneously.If can't detect within a period of time in terminal has loop to exist, the first line of a couplet port of the exchange chip of CPU EoC terminal is set to the proper communication of Forwarding recovering state terminal, and before removing, the Termination ID number of record sends cleared alarm to background net management simultaneously.
The present invention utilizes the Port-based functionality of vlan of the exchange chip of EoC terminal that the uni port of EoC terminal is isolated; and Port-based VLAN configuration is saved in the FLASH of EoC terminal; after being powered on, EoC terminal carries out immediately Port-based VLAN configuration; EoC terminal has just formed the defence of the broadcast storm that loop is produced from initial state, thereby has protected management and the service channel of EoC network.Meanwhile, utilize the Loop Detect function of EoC terminal switch chip self, the formation of detection loop, detects without sending detection packet by CPU management automatically, has reduced load and the network bandwidth resources of CPU.When detecting while there is loop in EoC terminal, the transceiving data function of EoC terminal is closed, prevent that the message of loopback from sending to first line of a couplet equipment, in the time that loop in EoC terminal is removed, the communication that automatically recovers terminal.The last record by loop information again and reporting, has reduced the investigation difficulty of loop network, has strengthened the maintenance and management of EOC network.
The present invention has made up the deficiency of STP agreement in EoC network, has solved EOC network loop and has investigated difficult problem, has effectively prevented the broadcast storm that loop produces simultaneously, has advantages of real-time report, automatic detection, automatically recovers, automatically protects.
The present invention has realized the automatic detection of EoC network loop by cable bridge switch, effectively avoided EoC network because loop produces broadcast storm, can detect in real time the loop condition of EoC network; Loop terminal information exchange in EoC network can also be crossed to the mode reporting equipment webmaster of alarm, realize the loop fault in EoC network is efficiently managed and investigated simultaneously.
In sum, the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (9)
1. the loop automatic detection device in EoC network, is characterized in that, the loop automatic detection device in described EoC network comprises:
EoC terminal equipment, comprises Ethernet switching chip and storage chip; Described Ethernet switching chip support loop automatic detection function; Described storage chip is preserved Port-based VLAN configuration; When described EoC terminal equipment powers on, carrying out described Port-based VLAN configuration will isolate between the user network port in Ethernet switching chip;
EoC headend equipment, is connected with described EoC terminal equipment, in order to the loop automatic detection function of Ethernet switching chip described in remote opening, and regularly inquires about the loop detection result of Ethernet switching chip; If detected, loop produces, and EoC headend equipment interrupts the uplink and downlink communication of the EoC terminal equipment that produces loop;
EoC net background management system, is connected with described EoC headend equipment, the loop warning sending in order to receive EoC headend equipment.
2. the loop automatic detection device in EoC network according to claim 1, is characterized in that: described Ethernet switching chip comprises at least 2 user network ports.
3. the loop automatic detection device in EoC network according to claim 1, it is characterized in that: described EoC headend equipment comprises CPU, described CPU judges in order to the buffer status position by reading described Ethernet switching chip whether EoC terminal equipment produces loop.
4. the loop automatic detection device in EoC network according to claim 1, is characterized in that: described storage chip is FLASH.
5. the loop automatic testing method in EoC network, is characterized in that, the loop automatic testing method in described EoC network comprises:
Step 1, when EoC terminal equipment powers on, carries out the Port-based VLAN configuration of self preserving, and will between the user network port in the Ethernet switching chip of support loop automatic detection function, isolate;
Step 2, when EoC terminal equipment is reached the standard grade, the loop automatic detection function of Ethernet switching chip described in EoC headend equipment remote opening, and regularly inquire about the loop detection result of Ethernet switching chip; If detected, loop produces, and interrupts the uplink and downlink communication of the EoC terminal equipment that produces loop, and sends the user network port alarm that produces loop to EoC net background management system.
6. the loop automatic testing method in EoC network according to claim 1, it is characterized in that, the specific implementation process that described interruption produces the uplink and downlink communication of the EoC terminal equipment of loop is: the first line of a couplet port of the Ethernet switching chip in EoC terminal equipment is set to Blocking state.
7. the loop automatic testing method in EoC network according to claim 1, it is characterized in that, described step 2 also comprises: described EoC headend equipment in interrupting producing the uplink and downlink communication of EoC terminal equipment of loop, record interrupted EoC terminal equipment No. ID.
8. the loop automatic testing method in EoC network according to claim 6, it is characterized in that, described step 2 also comprises: have loop to exist if EoC headend equipment can't detect on EoC terminal equipment within a period of time, recover the uplink and downlink communication of interrupted EoC terminal equipment before, and remove No. ID of the interrupted EoC terminal equipment recording before.
9. the loop automatic testing method in EoC network according to claim 8, it is characterized in that, before described recovery, the specific implementation process of the uplink and downlink communication of interrupted EoC terminal equipment is: the first line of a couplet port of the Ethernet switching chip in EoC terminal equipment is set to Forwarding state.
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Application publication date: 20140507 |