CN111555972A - Aggregation method, system and storage medium of aggregated link - Google Patents
Aggregation method, system and storage medium of aggregated link Download PDFInfo
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- CN111555972A CN111555972A CN202010279380.2A CN202010279380A CN111555972A CN 111555972 A CN111555972 A CN 111555972A CN 202010279380 A CN202010279380 A CN 202010279380A CN 111555972 A CN111555972 A CN 111555972A
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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
- H04L45/24—Multipath
- H04L45/245—Link aggregation, e.g. trunking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
Abstract
The invention discloses a convergence method, a convergence system and a storage medium of an aggregation link, wherein the method comprises the following steps: monitoring ports which participate in convergence and are negotiated by an LACP protocol in real time; comparing whether the VLAN groups added by each port participating in aggregation are the same; when the ports participating in aggregation are found to be not completely the same, automatically configuring all the ports participating in aggregation to be added into the same VLAN group; and aggregating all the ports participating in aggregation, which are added into the same VLAN group, into one aggregated link. The invention realizes the function that the ports added into different VLAN groups can still run the LACP protocol and automatically aggregate into the aggregation link by adding the ports participating in aggregation into the same VLAN group, thereby providing larger communication bandwidth among the exchangers.
Description
Technical Field
The present invention relates to the field of computer application technologies, and in particular, to a method, a system, and a storage medium for aggregating links.
Background
LACP (Link Aggregation Control Protocol) is a Protocol operated between switches, and is used for automatically and cooperatively controlling a plurality of links directly connected between two switches to automatically aggregate into one aggregated Link, usually, up to 8 sub-links are supported to aggregate into one aggregated Link, and the bandwidth of the aggregated Link is the sum of the bandwidths of all ports participating in Aggregation, thereby providing a larger communication bandwidth between the switches.
After the two switches operate the LACP protocol, the number of links connected between the switches can be changed, increased and reduced at will without worrying about the problem of a ring network (the ring network is a message forwarding loop formed in the network, and a broadcast packet can be forwarded infinitely in the loop, occupies a bandwidth, and causes other data packets not to be received and transmitted normally); when the number of the connected links reaches or exceeds 2, the switch running the LACP protocol can automatically and cooperatively control a plurality of sub-links to be converged into a converged link without manual configuration, thereby greatly facilitating and reducing the work of network management and maintenance.
However, there is a condition that the aggregated link formed by the aggregation of the plurality of sub-links is to normally transmit data: the VLAN (Virtual Local Area Network) groups added to each sublink must be consistent, otherwise, the sublinks cannot normally share data packets of the aggregated link, where a VLAN group is the meaning of a VLAN forwarding group, one VLAN group has two important pieces of characteristic information, one is a VLAN ID (range 1-4094, the IDs of each VLAN group are different), and the other is a port member of the VLAN group (which ports belong to the VLAN group, and the port members of different VLAN groups may be the same), and a data packet of a designated VLAN ID can only be forwarded between port members of the VLAN group corresponding to the VLAN ID, which is a high-level function of the switch, and VLAN groups are divided to avoid forwarding the data packet between all ports of the switch. As shown in fig. 1, to aggregate P11-P21 link and P12-P22 link into an aggregated link, the VLAN groups added by P11 and P12 ports are required to be consistent, and the VLAN groups added by P21 and P22 ports are required to be consistent, but the VLAN groups added by P11 and P21 ports or P12 and P22 ports are not required to be consistent.
Observing switch 2 in fig. 1, typically relying on a network administrator to manually configure to keep the P21, P22 ports joined in the same consistent VLAN group, or observing switch 1 in fig. 1, typically relying on a network administrator to manually configure to keep the P11, P12 ports joined in the same consistent VLAN group; this reliance on manual configuration weakens the automation attributes of the LACP protocol convergence link function and increases the work of network management.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention mainly aims to provide a convergence method, a convergence system and a storage medium of an aggregated link, aiming at solving the problems that in the prior art, a network administrator needs to manually configure to keep VLAN groups added into two ports consistent, the automation attribute of the LACP aggregated link function is weakened, and the work of network management is increased.
In order to achieve the above object, the present invention provides a method for aggregating links, where the method for aggregating links includes the following steps:
monitoring ports which participate in convergence and are negotiated by an LACP protocol in real time;
comparing whether the VLAN groups added by each port participating in aggregation are the same;
when the ports participating in aggregation are found to be not completely the same, automatically configuring all the ports participating in aggregation to be added into the same VLAN group;
and aggregating all the ports participating in aggregation, which are added into the same VLAN group, into one aggregated link.
Optionally, in the aggregation method of aggregated links, a bandwidth of the aggregated link is a sum of bandwidths of all ports participating in aggregation.
Optionally, the method for aggregating links, where the monitoring, in real time, ports that participate in aggregation and are negotiated by the LACP protocol further includes:
and adding a monitoring program in the system in advance, wherein the monitoring program is used for monitoring the ports which participate in the aggregation and are negotiated by the LACP in real time and comparing whether the VLAN groups which are added into each port which participate in the aggregation are the same or not.
Optionally, the aggregation method for aggregated links further includes:
multiple links controlling direct connections between two switches are automatically aggregated into one aggregated link.
Optionally, the aggregation method for aggregated links, wherein the characteristics of the VLAN group include a VLAN ID and a port member of the VLAN group.
Optionally, in the aggregation method for aggregated links, a packet with a specific VLAN ID may only be forwarded between port members of a VLAN group with a corresponding VLAN ID.
Optionally, the method for aggregating aggregated links, where the comparing whether the VLAN groups added to each port participating in aggregation are the same specifically includes:
and inquiring whether the VLAN group added by each port participating in aggregation is the same or not through a driver of the switching chip.
Optionally, the method for aggregating links, where the automatically configuring all the ports participating in aggregation is added to the same VLAN group, specifically includes:
when the VLAN groups added by a plurality of ports participating in aggregation are different, the VLAN groups which are added by other ports and are not added by the current port are found out, and the current port is controlled to be added into the VLAN group which is added by other ports and is not added by the current port.
In addition, to achieve the above object, the present invention further provides a convergence system of aggregated links, wherein the convergence system of aggregated links includes: two switches connected through a port;
the aggregation system of the aggregation link is used for monitoring the ports participating in aggregation negotiated by the LACP protocol in real time; comparing whether the VLAN groups added by each port participating in aggregation are the same; when the ports participating in aggregation are found to be not completely the same, automatically configuring all the ports participating in aggregation to be added into the same VLAN group; and aggregating all the ports participating in aggregation, which are added into the same VLAN group, into one aggregated link.
In addition, to achieve the above object, the present invention further provides a storage medium, where the storage medium stores an aggregation program of aggregated links, and the aggregation program of aggregated links implements the steps of the aggregation method of aggregated links as described above when executed by a processor.
The invention monitors the ports participating in convergence negotiated by the LACP protocol in real time; comparing whether the VLAN groups added by each port participating in aggregation are the same; when the ports participating in aggregation are found to be not completely the same, automatically configuring all the ports participating in aggregation to be added into the same VLAN group; and aggregating all the ports participating in aggregation, which are added into the same VLAN group, into one aggregated link. The invention realizes the function that the ports added into different VLAN groups can still run the LACP protocol and automatically aggregate into the aggregation link by adding the ports participating in aggregation into the same VLAN group, thereby providing larger communication bandwidth among the exchangers.
Drawings
FIG. 1 is a schematic diagram of different switches connected by ports in the prior art;
FIG. 2 is a flow chart of a preferred embodiment of the aggregation method for aggregated links of the present invention;
fig. 3 is a schematic diagram of two switches through port aggregation in the preferred embodiment of the aggregation system for aggregating links according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 2, the aggregation method for aggregated links according to the preferred embodiment of the present invention includes the following steps:
step S10, monitoring the ports participating in convergence negotiated by the LACP protocol in real time;
step S20, comparing whether the VLAN groups added by each port participating in aggregation are the same;
step S30, when the ports involved in the aggregation are not completely the same, automatically configuring all the ports involved in the aggregation to be added into the same VLAN group;
step S40, aggregating all the ports participating in aggregation added to the same VLAN group into one aggregated link.
Specifically, the LACP protocol is a protocol for implementing link dynamic convergence, and exchanges information with an opposite end through an LACPDU (link convergence control protocol data unit). After the LACP protocol of a certain port is enabled, the port notifies the opposite end of the own system priority, system MAC address, port priority, port number and operation Key by sending LACPDU. After receiving the information, the opposite terminal compares the information with the information stored in other ports to select the port capable of converging, so that the two sides can reach the agreement of the port joining or exiting a certain dynamic convergence group. Link aggregation is often used between two important or busy nodes to increase interconnect bandwidth and provide reliability of the connection.
That is, the bandwidth of the aggregated link is the sum of the bandwidths of all the ports participating in aggregation, so as to provide a larger communication bandwidth between switches (a switch is a network device for forwarding electrical or optical signals, and can provide an exclusive electrical signal path for any two network nodes accessing the switch, the most common switch is an ethernet switch, and other common switches are a telephone voice switch, a fiber switch, and the like).
Before step S10, the method further includes: and adding a monitoring program in the system in advance, wherein the monitoring program is used for monitoring the ports which participate in the aggregation and are negotiated by the LACP in real time and comparing whether the VLAN groups which are added into each port which participate in the aggregation are the same or not.
The aggregation method of aggregated links in the present invention is used to control a plurality of links directly connected between two switches to automatically aggregate into one aggregated link, for example, 8 sub-links are aggregated into one aggregated link.
Specifically, the characteristics of the VLAN group include VLAN IDs (ranging from 1 to 4094, the IDs of each VLAN group being different) and port members of the VLAN group (which ports belong to the VLAN group, the port members of different VLAN groups may be the same). Packets specifying VLAN IDs can only be forwarded between port members of a VLAN group corresponding to the VLAN ID.
Further, the step of comparing whether the VLAN groups added to each port participating in aggregation are the same specifically includes: and inquiring whether the VLAN group added by each port participating in aggregation is the same or not through a driver of the switching chip. The specific steps of automatically configuring all the ports participating in aggregation to be added into the same VLAN group are as follows: when the VLAN groups added by a plurality of ports participating in aggregation are different, the VLAN groups which are added by other ports and are not added by the current port are found out, and the current port is controlled to be added into the VLAN group which is added by other ports and is not added by the current port.
As shown in fig. 3, a schematic diagram of adding a port to a VLAN group based on LACP protocol cooperation is shown, where cooperation means coordination and assimilation, that is, a coordination port adds to the same VLAN group; the coordination of multiple ports means that multiple ports coordinate and communicate to make all ports join into the same VLAN group, and these ports join into the same VLAN group, so that these ports can be aggregated into an aggregated link.
In fig. 3, the process of joining a VLAN group by port cooperation is described by taking the switch 2 as an example.
Port P21 of switch 2 is initially configured to join VLAN 10 and VLAN 20(VLAN 10 representing a VLAN group with a VLAN ID equal to 10 and VLAN 20 representing a VLAN group with a VLAN ID equal to 20), port P22 is initially configured to join VLAN 10 and VLAN 30(VLAN 30 representing a VLAN group with a VLAN ID equal to 30), and it is assumed that port P23 is initially configured to join VLAN 10, VLAN 20 and VLAN 30.
The LACP protocol can detect that the ports P21 and P22 are connected to the same switch, so that the P21 and P22 meet the basic condition of link aggregation.
Additional checks in the program implementing the LACP protocol (for example, by a driver of the switch chip querying the VLAN group to which the port is added) find that the VLAN groups to which the P21 and the P22 port are added are not identical, and need to be added to the identical VLAN group.
Therefore, the P21 port is added to VLAN 30 and the P22 port is added to VLAN 20, i.e. finally both the P21 and P22 ports are added to VLAN 10/20/30, thereby satisfying the condition of being added to the same VLAN group. The joining principle can be understood as finding out a VLAN group to which other ports join but to which the port itself does not join, so that the port itself also joins the VLAN group.
Finally, the program automation of the LACP protocol is realized, the ports P21 and P22 are converged into an aggregation link, and the purpose of converging a plurality of sub-links into an aggregation link is achieved.
Further, as shown in fig. 3, based on the aggregation method for aggregated links, the present invention also provides a aggregation system for aggregated links, where the aggregation system for aggregated links includes:
two switches connected through a port;
the aggregation system of the aggregation link is used for monitoring the ports participating in aggregation negotiated by the LACP protocol in real time; comparing whether the VLAN groups added by each port participating in aggregation are the same; when the ports participating in aggregation are found to be not completely the same, automatically configuring all the ports participating in aggregation to be added into the same VLAN group; and aggregating all the ports participating in aggregation, which are added into the same VLAN group, into one aggregated link.
Wherein the bandwidth of the aggregated link is the sum of the bandwidths of all the ports participating in aggregation.
And adding a monitoring program in the system in advance, wherein the monitoring program is used for monitoring the ports which participate in the aggregation and are negotiated by the LACP in real time and comparing whether the VLAN groups which are added into each port which participate in the aggregation are the same or not.
Multiple links controlling direct connections between two switches are automatically aggregated into one aggregated link. And inquiring whether the VLAN group added by each port participating in aggregation is the same or not through a driver of the switching chip.
The characteristics of the VLAN group include the VLAN ID and the port membership of the VLAN group. Packets specifying a VLAN ID can only be forwarded between port members of the VLAN group corresponding to the VLAN ID.
When the VLAN groups added by a plurality of ports participating in aggregation are different, the VLAN groups which are added by other ports and are not added by the current port are found out, and the current port is controlled to be added into the VLAN group which is added by other ports and is not added by the current port.
The present invention also provides a storage medium, where the storage medium stores an aggregation program of aggregated links, and the aggregation program of aggregated links implements the steps of the aggregation method of aggregated links as described above when executed by a processor.
In summary, the present invention provides a method, a system and a storage medium for aggregating links, where the method includes: monitoring ports which participate in convergence and are negotiated by an LACP protocol in real time; comparing whether the VLAN groups added by each port participating in aggregation are the same; when the ports participating in aggregation are found to be not completely the same, automatically configuring all the ports participating in aggregation to be added into the same VLAN group; and aggregating all the ports participating in aggregation, which are added into the same VLAN group, into one aggregated link. The invention realizes the function that the ports added into different VLAN groups can still run the LACP protocol and automatically aggregate into the aggregation link by adding the ports participating in aggregation into the same VLAN group, thereby providing larger communication bandwidth among the exchangers.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A method for aggregating aggregated links, the method comprising:
monitoring ports which participate in convergence and are negotiated by an LACP protocol in real time;
comparing whether the VLAN groups added by each port participating in aggregation are the same;
when the ports participating in aggregation are found to be not completely the same, automatically configuring all the ports participating in aggregation to be added into the same VLAN group;
and aggregating all the ports participating in aggregation, which are added into the same VLAN group, into one aggregated link.
2. The method for aggregating aggregated links according to claim 1, wherein the bandwidth of the aggregated link is the sum of the bandwidths of all the ports participating in aggregation.
3. The method for aggregating links according to claim 1, wherein the monitoring ports negotiated by LACP protocol and participating in aggregation in real time further comprises:
and adding a monitoring program in the system in advance, wherein the monitoring program is used for monitoring the ports which participate in the aggregation and are negotiated by the LACP in real time and comparing whether the VLAN groups which are added into each port which participate in the aggregation are the same or not.
4. The method for aggregating aggregated links according to claim 1, wherein the method for aggregating aggregated links further comprises:
multiple links controlling direct connections between two switches are automatically aggregated into one aggregated link.
5. The method of aggregating aggregated links according to claim 1, wherein the characteristics of the VLAN group comprise VLAN ID and port membership of the VLAN group.
6. The method of aggregating aggregated links of claim 3, wherein packets specifying VLAN IDs can only be forwarded between port members of a VLAN group corresponding to a VLAN ID.
7. The method for aggregating aggregated links according to claim 1, wherein the comparing whether the VLAN group joined to each port participating in aggregation is the same or not specifically comprises:
and inquiring whether the VLAN group added by each port participating in aggregation is the same or not through a driver of the switching chip.
8. The method for aggregating aggregated links according to claim 1, wherein the automatically configuring all the ports participating in aggregation to join the same VLAN group specifically comprises:
when the VLAN groups added by a plurality of ports participating in aggregation are different, the VLAN groups which are added by other ports and are not added by the current port are found out, and the current port is controlled to be added into the VLAN group which is added by other ports and is not added by the current port.
9. A converged system of aggregated links, the converged system of aggregated links comprising: two switches connected through a port;
the aggregation system of the aggregation link is used for monitoring the ports participating in aggregation negotiated by the LACP protocol in real time; comparing whether the VLAN groups added by each port participating in aggregation are the same; when the ports participating in aggregation are found to be not completely the same, automatically configuring all the ports participating in aggregation to be added into the same VLAN group; and aggregating all the ports participating in aggregation, which are added into the same VLAN group, into one aggregated link.
10. A storage medium, characterized in that it stores an aggregation program of aggregated links, which when executed by a processor implements the steps of the aggregation method of aggregated links according to any one of claims 1 to 8.
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