CN106850461B - Forwarding board channel multiplexing method and device - Google Patents
Forwarding board channel multiplexing method and device Download PDFInfo
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- CN106850461B CN106850461B CN201710122164.5A CN201710122164A CN106850461B CN 106850461 B CN106850461 B CN 106850461B CN 201710122164 A CN201710122164 A CN 201710122164A CN 106850461 B CN106850461 B CN 106850461B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
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Abstract
The invention provides a method for multiplexing a forwarding board channel, which comprises the following steps: monitoring a slot position where an online line card is located, and acquiring the bandwidth grade of the online line card; counting all the line card slot positions to obtain statistical information containing the slot positions and corresponding bandwidth grades; performing optimization multiplexing on all or part of the channel bandwidth of the forwarding board according to the statistical information; the invention also provides a forwarding board channel multiplexing device. The invention improves the bandwidth utilization rate of the forwarding board.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a method and a device for multiplexing channels of a forwarding board.
Background
The large-scale routing switching equipment adopts a rack type structure, and a forwarding board, a line card, a switching card, a main control card, a power supply module, a fan module and the like are arranged in the rack. The line cards are used for providing communication service interfaces, and the forwarding boards are used for providing backplane bandwidth support for the line cards, wherein the line cards all support hot-plug, and service bandwidths provided by different kinds of line cards are different, so that the forwarding bandwidths allocated by the forwarding boards are different.
At present, when the route switching equipment leaves a factory, a manufacturer can set a fixed backplane bandwidth value for each line card slot by a forwarding board according to the type of the line card installed on each line card slot on the equipment, so as to ensure that each line card can exert the maximum bandwidth efficiency. However, because the line card supports hot plug, if the line card type information on the subsequent device changes, the utilization rate of the bandwidth of the forwarding board is low due to the original backplane bandwidth value being used. For example: when leaving the factory, the slot position No. 1 and the slot position No. 2 are both line cards with the bandwidth of 1000M, the slot positions No. 1 and No. 2 of the line card are both allocated with the backplane bandwidth of 1000M by the forwarding board, and the bandwidth utilization rate of the forwarding board is the highest at this moment. Under the condition that the total bandwidth of all line cards is not changed, if the line card of the slot position No. 1 is replaced by the line card with the bandwidth of 200M by a user, the line card of the slot position No. 2 is replaced by the line card with the bandwidth of 1800M, if the backplane bandwidth allocated to the line card slot position by the forwarding board before use is used, the backplane bandwidth allocated to the line card of the slot position No. 1 by the forwarding board can be caused to be redundant, the backplane bandwidth allocated to the line card of the slot position No. 2 by the forwarding board is insufficient, and therefore the utilization rate of the forwarding board bandwidth is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a forwarding board channel multiplexing method and a forwarding board channel multiplexing device, which can greatly improve the bandwidth utilization rate of the forwarding board by monitoring the bandwidth of all line cards and performing channel multiplexing on the whole forwarding channel.
Specifically, the present invention provides a method for multiplexing a forwarding board channel, which comprises:
monitoring a slot position where an online line card is located, and acquiring the bandwidth grade of the online line card;
counting all the line card slot positions to obtain statistical information containing the slot positions and corresponding bandwidth grades;
and performing optimization multiplexing on all or part of the channel bandwidth of the forwarding board according to the statistical information.
Further, the bandwidth level is obtained through line card type information.
Further, the line card type information is stored in an EEPROM of the line card.
Further, whether the line card is on-line is obtained by reading the level of a preset I/O port.
Further, the optimizing multiplexing includes taking the product of the bandwidth of the forwarding board channel to be allocated and the slot bandwidth percentage as the backplane bandwidth of the corresponding slot line card, where the slot bandwidth percentage is the ratio of the bandwidth level corresponding to a slot to the sum of all slot bandwidth levels.
The invention also provides a forwarding board channel multiplexing device, which comprises:
a monitoring module: the device is used for monitoring the slot position where the online line card is located and acquiring the bandwidth grade of the online line card;
a statistic module: the system comprises a plurality of line card slot positions, a plurality of line card processing units and a plurality of line card processing units, wherein the line card slot positions are used for counting all line card slot positions to obtain statistical information containing the slot positions and bandwidth grades;
a multiplexing module: and the method is used for optimizing and multiplexing all or part of the channel bandwidth of the forwarding board according to the statistical information.
Further, the bandwidth level is obtained through line card type information.
Further, the device also comprises a storage module, and the storage module is used for storing a comparison table of the line card type and the bandwidth grade.
Further, whether the line card is on-line is obtained by reading the level of a preset I/O port.
Further, the optimizing multiplexing includes taking the product of the bandwidth of the forwarding board channel to be allocated and the slot bandwidth percentage as the backplane bandwidth of the corresponding slot line card, where the slot bandwidth percentage is the ratio of the bandwidth level corresponding to a slot to the sum of all slot bandwidth levels.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) the bandwidth utilization rate of the forwarding board is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flow chart of a method for multiplexing a forwarding board channel according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for multiplexing a forwarding board channel according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a forwarding board channel multiplexing apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a forwarding board channel multiplexing apparatus according to another embodiment of the present invention.
Description of the main element symbols:
100. a monitoring module; 200. a statistical module; 300. a multiplexing module; 400. and a storage module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a method for multiplexing channels of a forwarding board according to an embodiment of the present invention includes the following steps:
s101: and monitoring the slot position of the online line card to acquire the bandwidth grade of the online line card.
The slot positions of the line card on the equipment can be determined to be inserted into the line card, and the serial number of the slot positions of the line card on the equipment can be continuous or discontinuous. At least 2 slots in the equipment can be inserted with line cards. And monitoring whether a line card is on line or not in the line card slot position, and acquiring the bandwidth grade corresponding to the line card when the line card is on line.
How to monitor whether each line card slot is on-line or not, firstly, identifying the slot with each number, and marking the number of the slot with the line card by using a multi-pin level.
In a specific embodiment, the device has 4 line card slots in total, and the slot numbers of the line cards are consecutive, starting from 0, and we can use 2-and-pin levels to identify all the line card slots. When the pin level group (high level is in front of the slot, low level is behind the pin level group) is low level and low level, the slot position is a line card slot position No. 0, when the pin level group is low level and high level, the slot position is a line card slot position No. 1, when the pin level group is high level and low level, the slot position is a line card slot position No. 2, and when the pin level group is high level and high level, the slot position is a line card slot position No. 3.
If the total number of the line card slots is more than 4 and less than 9, at least 3-heel pin level is needed to identify all the line card slots.
Whether the line card on the slot is on-line or not can be obtained by reading the level of the relevant I/O port.
In a specific embodiment, the level of the I/O port is low indicating that the line card is not on-line, and the level of the I/O port is high indicating that the line card is on-line. When the level of the I/O port of the slot No. 1 is low level, it indicates that no line card is on line in the slot No. 1, and when the level of the I/O port of the slot No. 1 is high level, it indicates that the line card is on line in the slot No. 1. When the level of the I/O port of the slot No. 1 is changed into high level from low level, the cable card of the slot No. 1 is inserted, and when the level of the I/O port of the slot No. 1 is changed into low level from high level, the cable card of the slot No. 1 is pulled out. In other embodiments, a high level of the I/O port indicates that the line card is not on-line, and a low level of the I/O port indicates that the line card is on-line.
When a line card in a slot is monitored to be online, the bandwidth level of the line card needs to be further acquired.
The bandwidth class may be obtained by reading a specific pin level; the bandwidth grade of the line card can also be determined according to the line card type by acquiring the line card type.
The bandwidth class of a line card may be marked with a specific pin level. For example, 2 different states can be represented by high and low levels, when 1 pin level is used, the bandwidth grade of the line card can be divided into 2 grades, when 2 pin levels are used, the bandwidth grade of the line card can be divided into 4 grades, when n pin levels are used, the bandwidth grade of the line card can be divided into 2 gradesnAnd (4) grading.
The bandwidth class of the line card is preferably obtained by line card type information. And dividing the line cards into a plurality of grades according to the number and the bandwidth of the service ports provided by the line cards. For example: taking a 4-port gigabit electrical port service line card as an example, the line card has 4 gigabit service ports, each service port needs 1000M of bandwidth, and can provide 4000M of bandwidth in total, if the 1000M of bandwidth corresponds to a bandwidth class of 1, the 4-port gigabit electrical port service line card can be classified into a bandwidth class of 4, taking a gigabit single optical port line card as an example, the line card has only 1 gigabit service port, and the corresponding line card can be classified into a bandwidth class of 10. The line cards are divided into several grades according to the bandwidth of the service ports of the actual line cards and the number of the ports.
In a specific embodiment, the line card is a line card with 4 optical ports and 4 electrical ports, and the line card supports line card type switching, and may present 2 different line card types. When the line card is switched to an 8fe line card board, it indicates that 4 optical ports and 4 electrical ports are all used, and the bandwidth value of each interface is 100M, and the bandwidth of the line card is 800M at this time. When the line card is switched to a 4ge line card board, it indicates that only 4 interfaces are used, and whether the electrical interface or the gateway is specifically used may be determined by configuring the optoelectronic property of the interfaces, and the bandwidth value of each interface is 1000M, and at this time, the bandwidth of the line card is 4000M. If the corresponding bandwidth grade of the 100M bandwidth is 1, when the line card of the 4 optical ports and the 4 electrical ports is used as an 8fe line card board, the corresponding bandwidth grade is 8, and when the line card of the 4 optical ports and the 4 electrical ports is used as a 4ge line card board, the corresponding bandwidth grade is 40. 8fe and 4ge are the 2 different line card types that this physical line card presents.
The line card type information may be stored in an electrically erasable Programmable Read-Only Memory (EEPROM), and the line card bandwidth level may be determined according to a line card type and bandwidth level comparison table stored in the storage module by reading the line card type information stored in the EEPROM.
When a new line card is inserted into the equipment, the system firstly supplies power to part of modules of the line card, the power consumed by the part of modules is very small relative to the power of the whole line card, and the system firstly supplies power to the EEPROM of the line card, so that the management forwarding board can communicate with the line card to acquire the bandwidth grade of the line card.
When a new type of service line card is put into use, the bandwidth grade of the new type of service line card can be identified by only updating the line card type and bandwidth grade comparison table for the equipment which leaves the factory without returning to the factory for processing.
S102: and counting all the line card slot positions to obtain statistical information containing the slot positions and corresponding bandwidth grades.
And counting all the line card slots, and if no line card is on line in the line card slots, setting the line card bandwidth level of the slot to be 0. For example: when the equipment is provided with 4 line card slots, a gigabit single-optical-port line card is inserted into the slot 0, a gigabit electric-port line card with 4 ports is inserted into the slot 1, the slots 2 and 3 are idle, and the bandwidth grade corresponding to the 1000M bandwidth is 1. The statistical information is as follows: the slot 0 requires a bandwidth level of 10, the slot 1 requires a bandwidth level of 4, and the slot 2 and the slot 3 require bandwidth levels of 0.
S103: and performing optimization multiplexing on all or part of the channel bandwidth of the forwarding board according to the statistical information.
The channel bandwidth of the forwarding board on the device is determined by the maximum forwarding capacity of the forwarding chip, and after the device determines that the channel bandwidth of the forwarding board is fixed.
If the service provided by the line card of a certain slot position on the equipment is very important, in order to ensure the line card interface service of the slot position to the maximum extent, the bandwidth of the channel of the forwarding board can be divided into a part for the slot position separately. The rest channel bandwidth is taken for optimization multiplexing. If the service levels of all the line card slots are equally important, the whole bandwidth of the channel of the forwarding board is used for optimizing multiplexing.
Specifically, the product of the bandwidth of the forwarding board channel to be allocated and the slot bandwidth percentage is used as the backplane bandwidth of the corresponding slot line card, and the slot bandwidth percentage is the ratio of the bandwidth level corresponding to one slot to the sum of all slot bandwidth levels.
For example: when the device has 4 line card slots, the bandwidth of the forwarding board channel is 20M, and all the bandwidth of the forwarding board channel is used for optimizing multiplexing, so that the bandwidth of the forwarding board channel to be allocated is 20M. A line card with the bandwidth grade of 10 is inserted into the slot 0, a line card with the bandwidth grade of 5 is inserted into the slot 1, and a line card with the bandwidth grade of 5 is inserted into the slot 3. The forwarding board provides 10M backplane bandwidth for slot No. 0, 5M backplane bandwidth for slot No. 1, 0M backplane bandwidth for slot No. 2, and 5M backplane bandwidth for slot No. 3, respectively. When the line card in the slot position of the line card changes, the line cards in the slot positions 0 and 3 are pulled out, the line card with the bandwidth grade of 15 is newly inserted into the slot position 2, and at the moment, the forwarding board respectively provides the backplane bandwidth of 0M for the slot position 0, the backplane bandwidth of 5M for the slot position 1, the backplane bandwidth of 15M for the slot position 2 and the backplane bandwidth of 0M for the slot position 3.
As shown in fig. 2, a method for multiplexing channels of a forwarding board according to another embodiment of the present invention includes the following steps:
s201: and monitoring the slot position of the on-line card, and acquiring the line card type information of the on-line card.
And monitoring all the slot positions of the line card, and reading the type information of the line card stored in the EPROM of the line card when the line card of a certain slot position is monitored to be on line.
S202: and acquiring the bandwidth grade of the line card according to the line card type information.
And finding the bandwidth grade corresponding to the line card according to the line card type and bandwidth grade comparison table.
S203: and counting all the line card slot positions to obtain statistical information containing all the slot positions and corresponding bandwidth grades.
And counting the bandwidth grade information of all the line card slots, wherein if the line cards are not on line, the bandwidth grade is 0.
S204: and performing optimization multiplexing on all or part of the channel bandwidth of the forwarding board according to the statistical information.
Specifically, the product of the bandwidth of the forwarding board channel to be allocated and the slot bandwidth percentage is used as the backplane bandwidth of the corresponding slot line card, and the slot bandwidth percentage is the ratio of the bandwidth level corresponding to one slot to the sum of all slot bandwidth levels. The forwarding plane channel bandwidth to be allocated may be all or a portion of the forwarding plane channel bandwidth.
The method can monitor the insertion, extraction or board type switching of the line card in real time, when the actions of inserting, extracting and board type switching are monitored, all line card slot positions are counted to obtain statistical information containing slot positions and corresponding bandwidth grades, all or part of the channel bandwidth of the forwarding board is optimized and reused according to the statistical information, and the real-time monitoring can be realized through an interrupt interface. The slot positions of the line cards can be monitored at fixed intervals, the line card types of the on-line cards are obtained, the bandwidth grades of the line cards are obtained through the line card types, all the line card slot positions are counted to obtain statistical information containing the slot positions and the corresponding bandwidth grades, all or part of the channel bandwidth of the forwarding board is optimized and multiplexed according to the statistical information, and the fixed interval time monitoring can be achieved by setting a timer.
As shown in fig. 3, an apparatus for multiplexing a forwarding board channel according to an embodiment of the present invention includes:
the monitoring module 100: the device is used for monitoring the slot position where the online line card is located and acquiring the bandwidth grade of the online line card;
the statistical module 200: the system comprises a plurality of line card slot positions, a plurality of line card processing units and a plurality of line card processing units, wherein the line card slot positions are used for counting all line card slot positions to obtain statistical information containing the slot positions and bandwidth grades;
the multiplexing module 300: and the method is used for optimizing and multiplexing all or part of the channel bandwidth of the forwarding board according to the statistical information.
As shown in fig. 4, a device for multiplexing a forwarding board channel according to another embodiment of the present invention includes:
the monitoring module 100: the device is used for monitoring the slot position where the online line card is located and acquiring the bandwidth grade of the online line card;
the statistical module 200: the system comprises a plurality of line card slot positions, a plurality of line card processing units and a plurality of line card processing units, wherein the line card slot positions are used for counting all line card slot positions to obtain statistical information containing the slot positions and bandwidth grades;
the multiplexing module 300: and the method is used for optimizing and multiplexing all or part of the channel bandwidth of the forwarding board according to the statistical information.
The storage module 400: the method is used for storing the comparison table of the line card type and the bandwidth grade.
Those skilled in the art will appreciate that the figures are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The above-mentioned invention numbers are merely for description and do not represent the merits of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (8)
1. A method for multiplexing channels of a forwarding board, the method comprising:
monitoring a slot position where an online line card is located, and acquiring the bandwidth grade of the online line card;
counting all the line card slots to obtain statistical information including the slot positions and the bandwidth grades of the line cards inserted into the slot positions;
and performing optimized multiplexing on all or part of the bandwidth of the forwarding board channel according to the statistical information, wherein the optimized multiplexing comprises that the product of the bandwidth of the forwarding board channel to be distributed and the bandwidth percentage of the online line card inserted into the slot position is used as the backplane bandwidth of the line card of the corresponding slot position, and the bandwidth percentage of the online line card inserted into the slot position is the ratio of the bandwidth grade corresponding to the online line card inserted into the slot position to the sum of the bandwidth grades of the online line cards inserted into all the slot positions.
2. The method of claim 1, wherein the bandwidth class is obtained via a line card type information.
3. The method of claim 2, wherein the line card type information is stored on an EEPROM of the line card.
4. The method according to claim 1, wherein whether the line card is online is obtained by reading the level of a preset I/O port level.
5. A forwarding plane channel multiplexing device, comprising:
a monitoring module: the device is used for monitoring the slot position where the online line card is located and acquiring the bandwidth grade of the online line card;
a statistic module: the statistical information comprises the slot positions and the bandwidth grades of the on-line cards inserted into the slot positions;
a multiplexing module: and the optimized multiplexing is used for performing optimized multiplexing on all or part of the bandwidth of the forwarding board channel according to the statistical information, wherein the optimized multiplexing comprises that the product of the bandwidth of the forwarding board channel to be distributed and the bandwidth percentage of the online line card inserted into the slot position is used as the backplane bandwidth of the line card of the corresponding slot position, and the bandwidth percentage of the online line card inserted into the slot position is the ratio of the corresponding bandwidth grade of the online line card inserted into the slot position to the sum of the bandwidth grades of the online line cards inserted into all slot positions.
6. The apparatus of claim 5, wherein the bandwidth level is obtained via line card type information.
7. The apparatus of claim 6, wherein the apparatus further comprises a memory module for storing a line card type to bandwidth class lookup table.
8. The apparatus of claim 5, wherein whether the line card is online is obtained by reading high and low of a preset I/O port level.
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