CN106533889A - Method of BPE cross-port extension device to realize link aggregation in chip - Google Patents
Method of BPE cross-port extension device to realize link aggregation in chip Download PDFInfo
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- CN106533889A CN106533889A CN201611269914.3A CN201611269914A CN106533889A CN 106533889 A CN106533889 A CN 106533889A CN 201611269914 A CN201611269914 A CN 201611269914A CN 106533889 A CN106533889 A CN 106533889A
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- Prior art keywords
- link aggregation
- message
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- tag
- equipment
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Classifications
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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
-
- 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]
-
- 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
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/70—Virtual switches
Abstract
The invention discloses a method of a BPE cross-port extension device to realize link aggregation in a chip. Uplink messages from the ports of different port extension devices are inserted in the same E-TAG, the E-TAG identification message is from the same link aggregation group, a control device receives the message, deletes the E-TAG and performs network bridge learning after mapping the corresponding link aggregation group, meanwhile analyzes the message, and forwards the message. When a message needs to be forwarded to the link aggregation group, the control device inserts the message in the corresponding E-TAG and selects the corresponding port extension device, and the selected port extension device forwards the message to the port thereon and deletes the E-TAG. By adoption of the method disclosed by the invention, cross-PE link aggregation is realized so as to support the mutual backup of cross-PE VMs.
Description
Technical field
The present invention relates to a kind of ports-Extending technology, more particularly, to BPE (Bridge port in a kind of chip
Extension, bridges ports-Extending) across the ports-Extending equipment method of realizing link aggregation.
Background technology
VM (Virtual Machine, virtual unit) and its migration drive sending out for the extensive double layer network of data center
Exhibition, as the expansion of network size, network equipment quantity increase therewith, network management becomes in data center's infrastructure management
A thorny problem.Meanwhile, it is higher that modern large data center is supplied to the port density of server it is also proposed to network
Require, such as scale of ten thousand servers has been the common requirements in Internet data center's reality.Ports-Extending technology conduct
Improve a kind of effective means gradually accreditation that is ripe and obtaining industry of access device port density.VCF longitudinally virtualizes skill
Art (Vertical Converged Framework, longitudinal direction fusion framework, hereinafter referred to as VCF) is a kind of realization of the technology
Mode, meet data center virtualization it is highly dense access and can be with streamlining management.
VCF supports to carry out system isomery extension in longitudinal dimension, i.e., on the basis for forming a logical Virtual equipment
On, master system is added using a box-shaped device as one block of remote interface plate, to reach expansion I/O port capabilities and carry out
The purpose of concentrated controling management.
For VCF, equipment is divided into CB (Controlling Bridge, control device) and PE (Port by role
Extender, ports-Extending equipment) two kinds.Two PORT (ends in the scene that network chip BPE is used, under same PE
Mouthful) LAG (Link Aggregation, link aggregation) can be supported, same ETAG is added when up direction
(Extension VLAN Tag extend virtual local area network tags), can so reach backup and increase the purpose of bandwidth, when certain
After individual PORT link (port link) down (closing), moreover it is possible to which offer service is provided.
Above-mentioned is that existing chip BPE realizes LAG under same PE, after PORT link down can be solved, backup
Purpose.But, there is a problem of here one it is serious, after PE link down, all VM for connecting this PE are unable to work
Make.I.e. prior art is only supported to support LAG (Link Aggregation- link aggregations) on same PE, it is impossible to
The LAG on different PE is supported, after so causing PE down, not backing up VM can use.
The content of the invention
It is an object of the invention to overcome the defect of prior art, there is provided across the ports-Extending equipment realities of BPE in a kind of chip
The method of existing link aggregation, can realize backuping each other to realize the VM across PE by link aggregation.
For achieving the above object, the present invention proposes following technical scheme：In a kind of chip, across the ports-Extending equipment of BPE is realized
The method of link aggregation, including：
S1, from the up message of different ports-Extending device ports, will insert identical E-TAG, the E-TAG marks
Message is known from same link aggregation group；
S2, control device receive the message, are mapped out after the corresponding link aggregation group according to the E-TAG, are deleted
Except the E-TAG and bridge study is carried out, while the parsing message carries out message forwarding according to forward table；
S3, when there is message be forwarded to the link aggregation group, message is inserted the corresponding E-TAG by control device,
And corresponding ports-Extending equipment is selected, forwarded the packet on its port by the ports-Extending equipment for selecting, and delete described
E-TAG；
S4, if the link-down between the ports-Extending equipment for selecting and control device, control device is then by message from composition
The port of other ports-Extending equipment of link aggregation group forwards.
The invention allows for another technical scheme：In a kind of chip, across the ports-Extending equipment of BPE realizes that link gathers
The method of conjunction, including：
S1 ', will insert the first E-TAG of identical from the up message of different ports-Extending device ports, and described the
One E-TAG identification messages are from same link aggregation group；
S2 ', control device receive the message, map out the corresponding link aggregation group according to an E-TAG
Afterwards, delete an E-TAG and carry out bridge study, while the parsing message carries out message forwarding according to forward table；
S3 ', if the destination interface expansion equipment of message forwarding is the member of non-link aggregation group, control device is then by message
After corresponding 2nd E-TAG of insertion message destination interface expansion equipment, message is sent to into corresponding destination interface expansion equipment, institute
State destination interface expansion equipment to forward the packet on its port and delete the E-TAG.
Preferably, a part of bytes of E-CID in the E-TAG keep for the link aggregation across ports-Extending equipment to make
With remainder byte representation link aggregation group ID.
Preferably, the E-CID in the E-TAG is 12 bits, and its high 5 bit is complete 1 mark, keeps for across port expansion
The link aggregation of exhibition equipment is used；Low 7 bit represents link aggregation group ID.
Preferably, in step S2, control device searches forward table according to the MAC destination addresses of message, according to what is found
Forwarding outlet is forwarded to message.
Preferably, in step S3, control device selects corresponding ports-Extending equipment by hash algorithm.
Preferably, the destination interface expansion equipment of the E-CID identification messages forwarding in the 2nd E-TAG.
Preferably, in step S2 ', control device searches forward table according to the MAC destination addresses of message, according to what is found
Forwarding outlet is forwarded to message.
Compared with prior art, the invention has the beneficial effects as follows：The present invention by by the message across between PE plus mark come
From the E-TAG of same link aggregation group, the link aggregation across PE is realized, so as to support that the VM across PE backups each other.
Description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of the present invention 1；
Fig. 2 is the schematic flow sheet of the embodiment of the present invention 2；
Fig. 3 is the principle schematic of the embodiment of the present invention 1 or 2.
Specific embodiment
Below in conjunction with the accompanying drawing of the present invention, clear, complete description is carried out to the technical scheme of the embodiment of the present invention.
The method that across the ports-Extending equipment of BPE realizes link aggregation in a kind of disclosed chip, for port
Expansion technique, in particular for VCF longitudinal directions Intel Virtualization Technology, by adding mark from same link by the message across between PE
The E-TAG of aggregation group, realizes the link aggregation across PE, so as to support that the VM across PE backups each other.
Specifically, as shown in figure 1, across the ports-Extending equipment of BPE realizes that link gathers in a kind of disclosed chip
The method of conjunction, including：
S1, from the up message of different ports-Extending device ports, will insert identical E-TAG, E-TAG mark reports
Text is from same link aggregation group；
S2, control device receive message, are mapped out after corresponding link aggregation group according to E-TAG, delete E-TAG and carry out
Bridge learns, while analytic message carries out message forwarding according to forward table；
S3, when there is message be forwarded to link aggregation group, message is inserted corresponding E-TAG by control device, and selects phase
The ports-Extending equipment answered, is forwarded the packet on its port by the ports-Extending equipment for selecting, and deletes E-TAG；
S4, if the link-down between the ports-Extending equipment for selecting and control device, control device is then by message from composition
The port of other ports-Extending equipment of link aggregation group forwards.
Below with a specific embodiment 1 explaining above-mentioned technical proposal：
With reference to shown in Fig. 3, the P2 ports of the P1 ports of PE1 and PE2 are carried out into LAG bindings, for the ease of description, below will
The P1 ports of PE1 are referred to as PE1-P1, and the P2 ports of PE2 are referred to as PE2-P2.
By from PE1-P1 and PE2-P2 up message, identical E-TAG is all inserted into, for identification message from same
Link aggregation group.The present embodiment 1 by word length for 12 bits (bit) E-CID (E-CID is a field inside E-TAG, use
To represent VLAN ID's) 0xF81 is entered as, wherein high 5 bit are complete 1 mark, keep for across PE link aggregation to use, low
7bit represents link aggregation group ID, defines PE1-P1 and PE2-P2 here and binds to form link aggregation group 1, i.e., low 7bit is entered as
0x1。
Control device (CB) receives such message (high 5bit is 1), is designated a link aggregation group, and group ID is 1, is reflected
Penetrate a Global PORT ID (virtual ID of the switch external physical mouth inside switch), and delete ETAG
Row bridge learns (Bridge learning), while the MAC destination addresses (MACDA) of analytic message do normal bridge forwarding
(Bridge Fowarding)。
When having message to need to be forwarded to this across the link aggregation group of PE, CB enters edlin to this message, inserts
Enter corresponding ETAG, E-CID is 0xF81；Link aggregation Hash selective polymerization member port (PE1-P1or PE2- are carried out in CB
P2), if the member port for selecting is PE1-P1, then just E-Packeted to P1 ports by PE1, and delete ETAG, completed
Whole forwarding behavior.If the link-down (down) between PE1 and CB, CB will select PE2-P2 poly- as link all the time
Charge-coupled 1 forwarding destination, so that reach the purpose of backup.
With reference to shown in Fig. 3, when there is message to be sent to virtual machine 2 (VM2) or virtual machine 1 (VM1) from virtual machine 3 (VM3),
The MAC destination addresses of the message for sending over from VM3 are link aggregation group 1, and the message is entered from the uplink port P3 of PE3
After PE3, by message insertion VM3 corresponding ETAG, ECID is 0x3 to PE3, and after insertion, message format is as follows：
Row port P3 receives the message of above-mentioned form to CB from it, maps exit port 3 according to ETAG and does bridge study, and
And delete ETAG.CB is found and is destined for link aggregation group 1 according to forward table, selects to be sent to VM1 according to hash algorithm (hash)
Or VM2, if selecting to be sent to VM1, the corresponding ETAG of insertion LAG group1, ECID is 0xF81, is sent out from the downlink port P1 of CB
Toward PE1, VM1 is sent to after message is deleted ETAG by PE1, so completes VM3 to the communication of link aggregation group 1.Wherein, CB
The message format that port P1 is sent to PE1 is as follows：
As shown in Fig. 2 present invention further teaches another technical scheme：Across the ports-Extending equipment of BPE in a kind of chip
The method for realizing link aggregation, including：
S1 ', will insert the first E-TAG of identical from the up message of different ports-Extending device ports, and described the
One E-TAG identification messages are from same link aggregation group；
S2 ', control device receive message, are mapped out after corresponding link aggregation group according to an E-TAG, delete an E-
TAG simultaneously carries out bridge study, while analytic message carries out message forwarding according to forward table；
S3 ', if the destination interface expansion equipment of message forwarding is the member of non-link aggregation group, control device is then by message
After corresponding 2nd E-TAG of insertion message destination interface expansion equipment, message is sent to into corresponding destination interface expansion equipment, institute
State destination interface expansion equipment to forward the packet on its port and delete the E-TAG.
Below with a specific embodiment 2 explaining above-mentioned technical proposal：
With reference to shown in Fig. 3, the P2 ports of the P1 ports of PE1 and PE2 are carried out into LAG bindings, for the ease of description, below will
The P1 ports of PE1 are referred to as PE1-P1, and the P2 ports of PE2 are referred to as PE2-P2.
By from PE1-P1 and PE2-P2 up message, identical E-TAG is all inserted into, for identification message from same
Link aggregation group.E-CID of the present embodiment 1 by word length for 12 bits (bit) is entered as 0xF81, and wherein high 5 bit are complete 1 mark
Know, keep for across PE link aggregation to use, low 7bit represents link aggregation group ID, define PE1-P1 and PE2-P2 binding shapes here
Into link aggregation group 1, i.e., low 7bit is entered as 0x1.
Control device (CB) receives such message (high 5bit is 1), is designated a LAG group, and group ID are
1, mapping a Global PORT ID, and delete ETAG carries out bridge study (Bridge learning), while parsing report
The MAC destination addresses (MACDA) of text do normal bridge forwarding (Bridge Fowarding).
If the destination interface expansion equipment of message forwarding is the member of non-link aggregation group, with reference to shown in Fig. 3, if there is VM1
The MACDA of the message message that is sent to VM3, i.e. VM1 be VM3, the member of the non-link aggregation groups of VM3 here.
After message is from the uplink port P1 of PE1 into PE1, ETAG can be inserted in PE1, E-CID is 0xF81, after insertion
Message format it is as follows：
Row P1 ports receive the message to CB from it, map out link aggregation group 1 according to ETAG, do bridge study, and
ETAG (ECID 0xF81) is deleted, the VM3 below PE3 is then forwarded the packet to according to forward table：It is sent to from the P3 ports of CB
PE3, needs to insert the corresponding ETAG of VM3 in PE3, and ECID is 0x3, deletes ETAG by PE3 and is sent to VM3, thus, completing
The communication of VM1 to VM3.The message format that the P3 ports of wherein CB are sent to PE3 is as follows：
Certainly, across the PE link aggregation realized between more than three PE is also extended to, its principle is with reference to embodiment 1 and in fact
Apply the specific descriptions of example 2.
The technology contents and technical characteristic of the present invention have revealed that as above, but those of ordinary skill in the art still may base
Make a variety of replacements and modification without departing substantially from spirit of the present invention in teachings of the present invention and announcement, therefore, the scope of the present invention
The content that should be not limited to disclosed in embodiment, and various replacements and modification without departing substantially from the present invention should be included, and be this patent Shen
Please claim covered.
Claims (10)
1. a kind of method that across the ports-Extending equipment of BPE realizes link aggregation in chip, it is characterised in that include：
S1, from the up message in the port of different ports-Extending equipment, will insert identical E-TAG, the E-TAG marks
Message is from same link aggregation group；
S2, control device receive the message, are mapped out after the corresponding link aggregation group according to the E-TAG, delete institute
State E-TAG and carry out bridge study, while the parsing message carries out message forwarding according to forward table；
S3, when there is message be forwarded to the link aggregation group, message is inserted the corresponding E-TAG by control device, and is selected
Corresponding ports-Extending equipment is selected, is forwarded the packet on its port by the ports-Extending equipment for selecting, and is deleted the E-
TAG；
S4, if the link-down between the ports-Extending equipment for selecting and control device, control device is then by message from composition link
The port of other ports-Extending equipment of aggregation group forwards.
2. the method that across the ports-Extending equipment of BPE realizes link aggregation in chip according to claim 1, its feature exist
In a part of byte-identifier messages of the E-CID in the E-TAG gather from link aggregation group, remainder byte-identifier link
Charge-coupled ID.
3. the method that across the ports-Extending equipment of BPE realizes link aggregation in chip according to claim 2, its feature exist
In the E-CID in the E-TAG is 12 bits, and its high 5 bit is complete 1 mark, keeps for the link across ports-Extending equipment
Polymerization is used；Low 7 bit represents link aggregation group ID.
4. the method that across the ports-Extending equipment of BPE realizes link aggregation in chip according to claim 1, its feature exist
In in step S2, control device searches forward table according to the MAC destination addresses of message, according to the forwarding outlet for finding to report
Text is forwarded.
5. the method that across the ports-Extending equipment of BPE realizes link aggregation in chip according to claim 1, its feature exist
In, in step S3, control device selects corresponding ports-Extending equipment by hash algorithm.
6. a kind of method that across the ports-Extending equipment of BPE realizes link aggregation in chip, it is characterised in that include：
S1 ', by from the up message of different ports-Extending device ports, inserts the first E-TAG of identical, an E-
TAG identification messages are from same link aggregation group；
S2 ', control device receive the message, are mapped out after the corresponding link aggregation group according to an E-TAG, are deleted
Except an E-TAG and bridge study is carried out, while the parsing message carries out message forwarding according to forward table；
S3 ', if the destination interface expansion equipment of message forwarding is the member of non-link aggregation group, message is then inserted by control device
After corresponding 2nd E-TAG of destination interface expansion equipment, message is sent to into corresponding destination interface expansion equipment, the destination
Mouth expansion equipment is forwarded the packet on its port and deletes the E-TAG.
7. the method that across the ports-Extending equipment of BPE realizes link aggregation in chip according to claim 6, its feature exist
In a part of bytes of E-CID in an E-TAG keep for the link aggregation across ports-Extending equipment to use, remainder
Divide byte representation link aggregation group ID.
8. the method that across the ports-Extending equipment of BPE realizes link aggregation in chip according to claim 7, its feature exist
In the E-CID in an E-TAG is 12 bits, and its high 5 bit is complete 1 mark, is kept for across ports-Extending equipment
Link aggregation is used；Low 7 bit represents link aggregation group ID.
9. the method that across the ports-Extending equipment of BPE realizes link aggregation in chip according to claim 6, its feature exist
In the destination interface expansion equipment of the E-CID identification messages forwarding in the 2nd E-TAG.
10. the method that across the ports-Extending equipment of BPE realizes link aggregation in chip according to claim 6, its feature exist
In in step S2 ', control device searches forward table according to the MAC destination addresses of message, according to the forwarding outlet for finding to report
Text is forwarded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269914.3A CN106533889A (en) | 2016-12-30 | 2016-12-30 | Method of BPE cross-port extension device to realize link aggregation in chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269914.3A CN106533889A (en) | 2016-12-30 | 2016-12-30 | Method of BPE cross-port extension device to realize link aggregation in chip |
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| CN108259297A (en) * | 2017-04-28 | 2018-07-06 | 新华三技术有限公司 | A kind of message processing method and device |
| CN109728991A (en) * | 2017-10-31 | 2019-05-07 | 中兴通讯股份有限公司 | A kind of method, apparatus, equipment and the storage medium of fast quick-recovery extension bridge system |
| CN110572487A (en) * | 2019-08-21 | 2019-12-13 | 烽火通信科技股份有限公司 | method and system for virtualizing any port of switch |
| CN111131024A (en) * | 2019-12-09 | 2020-05-08 | 盛科网络（苏州）有限公司 | Processing method and device of aggregated link |
| CN111163009A (en) * | 2020-02-20 | 2020-05-15 | 盛科网络（苏州）有限公司 | Method and device for realizing three-layer multicast in port expansion system |
| CN111884922A (en) * | 2020-07-21 | 2020-11-03 | 芯河半导体科技(无锡)有限公司 | Local forwarding system for cross-device link aggregation |
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| CN111163009A (en) * | 2020-02-20 | 2020-05-15 | 盛科网络（苏州）有限公司 | Method and device for realizing three-layer multicast in port expansion system |
| CN111163009B (en) * | 2020-02-20 | 2021-06-22 | 盛科网络（苏州）有限公司 | Method and device for realizing three-layer multicast in port expansion system |
| CN111884922A (en) * | 2020-07-21 | 2020-11-03 | 芯河半导体科技(无锡)有限公司 | Local forwarding system for cross-device link aggregation |
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Application publication date: 20170322 |