CN104753820A - Asymmetric forwarding method and device for service stream in aggregated link and switch - Google Patents
Asymmetric forwarding method and device for service stream in aggregated link and switch Download PDFInfo
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Abstract
The invention provides an asymmetric forwarding method and device for service stream in an aggregated link and a switch. The method comprises the steps of selecting a specified physical member port from at least two physical member ports; receiving a message and determining whether the received message is sent by specific VLAN according to the VID information of the VLAN I the received message; if so, setting a message outlet of the received message into the specified physical membrane port; forwarding the received message through the specified physical member port. According to the technical scheme, the method has the advantage that the message from the specified VLAN can be controlled in the aggregated link with two or more than two physical member ports to be forwarded through the specified physical member port in the aggregated link.
Description
Technical field
The present invention relates to the communications field, particularly, relate to the method and apparatus of the asymmetric forwarding of Business Stream in a kind of aggregated links.
Background technology
Link aggregation (Link Aggregation, LA), refer to and multiple physical port is bundled, become a logic port, to realize the load sharing of in/out flow in each member port, according to user configured port load-sharing strategy, switch can determine message is sent to the switch of opposite end from which member port.When switch detects the link occurs fault of one of them member port, just stop on this port and send message, and in remaining link, the port of message transmission is recalculated according to load-sharing strategy, non-working port recalculates message source mouth after recovering again.
Link aggregation has lot of advantages, and such as, the logic port of aggregated links has the bandwidth sum reliability wider than physical port, and aggregated links can realize load balancing.But aggregated links is Shortcomings also.The logic port formed when multiple physical port belongs to multiple VLAN (VirtualLocal Area Network simultaneously, VLAN) time, the flow of the plurality of VLAN will be balanced on the physical port, and the flow that cannot realize certain VLAN is only sent to an only physical port.Such as, existing 3 layer switch are due to application-specific integrated circuit (ASIC) (Application Specific Integrated Circuit, ASIC) only support with logic interface (Access Point, AP) forward for the purpose of, in work flow is distributed as, service traffics select physics member port to forward with specific equalization algorithm in logic interface, but cannot accomplish to divide according to VLAN certain fixed member's port repeat that service traffics realize past logic interface.
For above-mentioned technical problem, in prior art, there is no good solution.
Summary of the invention
The object of this invention is to provide the method for the asymmetric forwarding of Business Stream in a kind of aggregated links, described aggregated links comprises at least 2 physical member port, and the method comprises: select to specify physical member port from described at least 2 physical member port; Receive message and judge that whether the message received is from particular vlan according to VLAN identity in received message (VLAN identity, VID) information; When the outlet of the message of received message is set to described appointment physical member port from during described particular vlan by received message; And the message received is forwarded by described appointment physical member port.
Preferably, the method also comprises by described appointment physical member port forwarding broadcasting packet.
Preferably, when the outlet of the message of received message is set to described appointment physical member port and comprises from during described particular vlan by received message: when judging that the message that receives is from particular vlan according to described VID information, in address table, the message corresponding to described particular vlan is exported and be set to described appointment physical member port.
Preferably, the method also comprises: when judging the message that receives according to described VID information from VLAN outside described particular vlan, the message of the VLAN corresponded to except described particular vlan except is exported the logic port being set to described aggregated links.
Preferably, the method also comprises: forward by described logic port the message received when message outlet is set to the logic port of described aggregated links.
Preferably, receive message and judge whether the message received comprises from particular vlan according to VLAN (VLAN) identity (VID) information in received message: receive message and described message is sent to CPU; CPU resolves described message and returns VID information; Judge that whether the message received is from particular vlan according to described VID information.
Preferably, the method also comprises: the message flow being sent to CPU according to the policy control pre-set.
Present invention also offers the equipment of the asymmetric forwarding of Business Stream in a kind of aggregated links, described aggregated links comprises at least 2 physical member port, this equipment comprises: aggregated links administration module, specifies physical member port for selecting from described at least 2 physical member port; Address table module, for receiving message and judging that whether the message received is from particular vlan according to VLAN (VLAN) identity (VID) information in received message; When the outlet of the message of received message is set to described appointment physical member port from during described particular vlan by received message; And address table module, for forwarding by described appointment physical member port the message received when message outlet is set to described appointment physical member port.
Preferably, the message outlet corresponding to described particular vlan is set to described appointment physical member port from during particular vlan by the message of described address table module also for judging to receive according to described VID information in address table.
Preferably, described address table module also for the described message judging receiving according to described VID information from VLAN outside described particular vlan time, the outlet of the message of received message is set to the logic port of described aggregated links.
Preferably, this equipment also comprises router table means, for being forwarded the message received by described appointment physical member port.
Preferably, this equipment also comprises router table means, for forwarding by described logic port the message received when message outlet is set to the logic port of described aggregated links.
Preferably, described address table module is also for being sent to CPU by described message; Receive the VID information that described CPU returns.
Preferably, this equipment also comprises policy module, for being sent to the message flow of CPU according to the policy control pre-set.
Present invention also offers a kind of switch, this exchange comprises described equipment and processor, and described processor is for resolving described message and returning VID information.
By technique scheme, can control message from the particular vlan fixed physical member port only in aggregated links forwards in the aggregated links with more than 2 or 2 physical member port.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the exemplary use scenes schematic diagram of the method for the asymmetric forwarding of Business Stream in the aggregated links that provides of embodiment of the present invention;
Fig. 2 is the method flow diagram of the asymmetric forwarding of Business Stream in the aggregated links according to embodiment of the present invention;
Fig. 3 is the particular flow sheet of the asymmetric forwarding of Business Stream in the aggregated links according to embodiment of the present invention;
Fig. 4 is the equipment schematic diagram of the asymmetric forwarding of Business Stream in the aggregated links according to embodiment of the present invention;
Fig. 5 is the switch schematic diagram according to embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 is the exemplary use scenes schematic diagram of the method for the asymmetric forwarding of Business Stream in the aggregated links that provides of embodiment of the present invention.As shown in Figure 1, port one, 2 composition aggregated links AP100.This AP100 belongs to three VLANs (VLAN) simultaneously: VLAN2, VLAN499 and VLAN999.
Under specific circumstances, user wishes that the flow belonging to VLAN2 in network can with AP100 logic interface for outlet, and at this moment, service traffics can be balanced between 2 physical member's mouths, and the flow of other VLAN as VLAN499, VLAN999 is then only forwarded to port one.Wherein, AP100 is SVI mouth, therefore needs to forward the second layer (Layer 2, L2), third layer (Layer 3, L3) business simultaneously.Above-mentioned situation can be realized by the method shown in Fig. 2.
Fig. 2 is the method flow diagram of the asymmetric forwarding of Business Stream in the aggregated links according to embodiment of the present invention.As shown in Figure 2, in the method for the asymmetric forwarding of Business Stream in the aggregated links that embodiment of the present invention provides, aggregated links can comprise at least 2 physical member port.The method can comprise: step S201, selects to specify physical member port (or being called priority port) from described at least 2 physical member port; Step S202, receives message and judges that whether the message received is from particular vlan according to VLAN identity (VID) information in received message; Step S203, when the outlet of the message of received message is set to described appointment physical member port from during described particular vlan by received message; And step S204, the message received is forwarded by described appointment physical member port.
Pass through technique scheme, by setting up particular vlan to the mode of specifying physical member port to map, arrange and forwards by means of only described appointment physical member port from the message of particular vlan (or being called Management VLAN), can control message from the particular vlan fixed physical member port in aggregated links forwards in the aggregated links with more than 2 or 2 physical member port.
In embodiments, the message received can be L2 message, also can be L3 message, or L2 and L3 message.
In embodiments, when received message is from nonspecific VLAN, received message can be forwarded by the logic port comprising described appointment physical member port, such as, be forwarded by load balancing mode.
In embodiments, can for logic port configuration preference mouth configuration information, and determine to broadcast pass-through mode according to this configuration information.Such as, when certain logic port has priority port configuration information, broadcast traffic is forwarded by the appointment physical member port configured in priority port configuration information.In interchangeable execution mode, broadcast traffic can not be forwarded by the appointment physical member port configured in priority port configuration information, and be forwarded by the physical member port except specifying physical member port.Thus make broadcast traffic not take appointment physical member port.
In embodiments, broadcast traffic can be realized by means of only the physical member port transmission of specifying by transmitting broadcast to arrange.Said method can also comprise: arrange broadcast and transmit, and the outlet of the message of broadcasting packet is set to described appointment physical member port, and broadcasting packet forwards by means of only described appointment physical member port.
In interchangeable execution mode, the physical member port transmission of broadcast traffic not by specifying can be realized by transmitting broadcast to arrange.Said method can also comprise: arrange broadcast and transmit, and the outlet of the message of broadcasting packet is set to non-described appointment physical member port, and broadcasting packet is not forwarded by described appointment physical member port.
In embodiments, specifically can not arrange for unicast forwarding table, can ensure between physical member port balanced to unicast traffic like this.
This in embodiments, needs to prevent physical member port from carrying out direct address study, because will affect the content of address table and then affect broadcasting the maintenance of transmitting.For this reason, said method can also comprise: when judging that the message that receives is from particular vlan according to described VID information, in address table, the message outlet corresponding to described particular vlan is set to described appointment physical member port.Because switch generally has the configuration of physical member port direct address study, in order to according to VID information and executing address learning, the study of physical member port direct address can be forbidden.The function of address learning can by the processor of switch auxiliary under carry out, such as, message can be sent to processor to resolve, processor parses VID information and returns, after the message judging to receive according to VID information is from particular vlan, in address table, the message outlet corresponding to particular vlan is set to specify physical member port, otherwise the message outlet corresponding to other VLAN is set to the logic port of aggregated links.Correspondingly, can forward by the physical member port of specifying or logic port the message received.Can the corresponding outlet revising the next hop information of route accordingly after outlet in address table is provided with.In embodiments, in order to prevent message amount from too much causing processor excess load, current limliting or speed limit measure can be adopted to the message of sending processor.
Fig. 3 shows the idiographic flow of the asymmetric forwarding of Business Stream in the aggregated links according to embodiment of the present invention, specifically comprises: step S301, receives message; Step S302, is sent to processor by message; Step S303, the VID information that receiving processor returns; According to VID information, step S304, judges that whether the message received is from particular vlan, if so, then perform step S305, otherwise perform step S306; Step S305, E-Packets by specifying physical member port; Step S306, is E-Packeted by logic port.By this flow process, asymmetric forwarding can be realized, specific message is forwarded by specific physical member port.
The method that above-mentioned execution mode provides can realize in the network device, such as, in 3 layer switch.Another aspect of the present invention, provides a kind of such equipment.The equipment of the asymmetric forwarding of Business Stream in the aggregated links that embodiment of the present invention provides, as shown in Figure 4, can comprise: aggregated links administration module, specifies physical member port for selecting from described at least 2 physical member port; Address table module, for receiving message and judging that whether the message received is from particular vlan according to VLAN (VLAN) identity (VID) information in received message; When the outlet of the message of received message is set to described appointment physical member port from during described particular vlan by received message; And address table module, also for being forwarded the message received by described appointment physical member port.Preferably, this equipment can also comprise policy module, for being sent to the message flow of processor according to the policy control pre-set, make processor module under fire to prevent too large flow, therefore by policy module, rear speed limit is mated to the message flow being sent to processor module, can prevent message from pounding to processor module with large speed, improve stable equipment operation.
Preferably, described equipment also comprises router table means for forwarding by described appointment physical member port the message received when message outlet is set to described appointment physical member port; The message outlet corresponding to described particular vlan is set to described appointment physical member port from during particular vlan by the message of described address table module also for judging to receive according to described VID information in address table; Described address table module also for the message that judges to receive according to described VID information from VLAN outside described particular vlan time, the outlet of the message of received message is set to the logic port of described aggregated links; Described router table means is also for forwarding by described logic port the message received when message outlet is set to the logic port of described aggregated links; Described address table module is also for being sent to processor by described message; Receive the VID information that described processor returns.
In embodiments, the unicast message of L2 can realize assigned vlan specific physics member port forwarding in aggregation port by address table module; The unicast message of L3 can realize assigned vlan specific physics member port in aggregation port by router table means and forward.Wherein, L2 unicast message is forwarded by specific physical member port or logic port by arranging address table module to distinguish, and L3 message is then distinguished by specific physical member port or logic port forwarding according to the change of address table by router table means.
By technique scheme, can control message from the particular vlan fixed physical member port only in aggregated links forwards in the aggregated links with more than 2 or 2 physical member port.
Fig. 5 shows switch provided by the invention, comprise equipment and the processor of the asymmetric forwarding of Business Stream in above-mentioned aggregated links, processor may be used for analytic message, and return VID information to router table means, judge that whether message is from particular vlan for router table means according to VID information, thus message outlet can be determined whether to be set as specific physical member port, thus the message that can control from specific VLAN is only sent by specific physical member port, meet user in operational demand.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different execution mode of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (13)
1. a method for the asymmetric forwarding of Business Stream in aggregated links, described aggregated links comprises at least 2 physical member port, it is characterized in that, the method comprises:
Select to specify physical member port from described at least 2 physical member port;
Receive message and judge that whether the message received is from particular vlan according to VLAN (VLAN) identity (VID) information in received message;
When the outlet of the message of received message is set to described appointment physical member port from during described particular vlan by received message; And
The message received is forwarded by described appointment physical member port.
2. method according to claim 1, is characterized in that, the method also comprises by described appointment physical member port forwarding broadcasting packet.
3. method according to claim 1 and 2, is characterized in that, when received message comprises from the outlet of the message of received message being set to described appointment physical member port during described particular vlan:
When judging that the message that receives is from particular vlan according to described VID information, in address table, the message outlet corresponding to described particular vlan is set to described appointment physical member port.
4. method according to claim 1 and 2, is characterized in that, the method also comprises:
When judging the message that receives according to described VID information from VLAN outside described particular vlan, the message of the VLAN corresponded to except described particular vlan except is exported the logic port being set to described aggregated links.
5. method according to claim 1, is characterized in that, receives message and judges whether the message received comprises from particular vlan according to VLAN (VLAN) identity (VID) information in received message:
Receive message and described message is sent to processor;
Processor is resolved described message and is returned VID information;
Judge that whether the message received is from particular vlan according to described VID information.
6. method according to claim 5, is characterized in that, the method also comprises: the message flow being sent to processor according to the policy control pre-set.
7. an equipment for the asymmetric forwarding of Business Stream in aggregated links, described aggregated links comprises at least 2 physical member port, it is characterized in that, this equipment comprises:
Aggregated links administration module, specifies physical member port for selecting from described at least 2 physical member port;
Address table module, for receiving message and judging that whether the message received is from particular vlan according to VLAN (VLAN) identity (VID) information in received message; When the outlet of the message of received message is set to described appointment physical member port from during described particular vlan by received message; And
Described address table module, for forwarding the message received by described appointment physical member port.
8. equipment according to claim 7, it is characterized in that, the message outlet corresponding to described particular vlan is set to described appointment physical member port from during particular vlan by the message of described address table module also for judging to receive according to described VID information in address table.
9. equipment according to claim 7, is characterized in that, this equipment also comprises router table means, for forwarding by described appointment physical member port the message received when message outlet is set to described appointment physical member port.
10. equipment according to claim 7, it is characterized in that, described address table module also for the message that judges to receive according to described VID information from VLAN outside described particular vlan time, the outlet of the message of received message is set to the logic port of described aggregated links.
11. equipment according to claim 7, is characterized in that, described address table module is also for being sent to processor by described message; Receive the VID information that described processor returns.
12. equipment according to claim 11, is characterized in that, this equipment also comprises policy module, for being sent to the message flow of processor according to the policy control pre-set.
13. 1 kinds of switches, is characterized in that, this exchange comprises equipment according to any one of claim 7-12 and processor, and described processor is for the message that receives described in resolving and return VID information.
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| CN104753820B (en) | 2019-06-14 |
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