CN104243363A - Message processing method and message processing device - Google Patents
Message processing method and message processing device Download PDFInfo
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- CN104243363A CN104243363A CN201410522455.XA CN201410522455A CN104243363A CN 104243363 A CN104243363 A CN 104243363A CN 201410522455 A CN201410522455 A CN 201410522455A CN 104243363 A CN104243363 A CN 104243363A
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Abstract
The invention provides a message processing method and a message processing device. The technical scheme includes that packaging multiple Ethernet data messages which are needed to be sent to the same target BEB (backbone edge bridge) device in the same virtual network example into one expanded SPB (shortest path bridge network) data message and then sending. By the message processing method and the message processing device, processing pressure of the BEB device in terms of performing M-in-M package and de-package can be relieved, and network bandwidth waste can be reduced.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of message processing method be applied in SPBM network.
Background technology
SPB (Shortest Path Bridge Network, shortest path bridging) be one of ethernet standard of IEEE802.1aq definition, it is the further extension of Multiple Spanning Tree Protocol (MSTP), be intended to the clog-free double layer network building large flat, use SPB IS-IS (Intermediate System to Intermediate System Routing Protocol, Intermediate System-to-Intermediate System routing protocol) Link State in shared network, shortest path between each equipment parallel computation of SPB network and other each equipment, can avoid using Spanning-Tree Protocol (STP) unsteadiness brought and the low deficiency of part of links utilization ratio.
It is SPBM (Shortest path bridging MAC mode, shortest path bridge MAC pattern) the networking schematic diagram meeting IEEE802.1aq definition see Fig. 1, Fig. 1.In SPBM, BEB (Backbone Edge Bridge, backbone edges) equipment and BCB (Backbone Core Bridge, backbone network core bridges) based on LSDB (link state database synchronous between whole network equipment in SPBM, LSD), each BEB calculates the shortest path of other bridging devices each in this equipment to SPBM separately, B-MAC (Backbone MAC address is generated according to the shortest path calculated, backbone network MAC Address) transmit (or claim Filtering database, filtered data base) B-MAC list item (or claim filtering entry, filtering meter item).
See Fig. 2, Fig. 2 is the SPBM example schematic based on Fig. 1, three SPB VSI (SPB virtual service instance of SPBM networking in Fig. 1, SPB virtual service instance) identified separately by different I-SID (Backbone Service Instance Identifier, backbone network Service Instance is numbered) I-SID300, I-SID 400, I-SID 500 respectively.Each SPB VSI has been assigned to a B-VLAN (Backbone VLAN, backbone virtual-LAN), for transmission user flow in SPBM network.As shown in Figure 2, the customer flow of three SPB VSI forwards completely isolated.
SPBM network shown in Fig. 1, the B-MAC address that BEB equipment is corresponding according to each Ethernet data message (user data message) target MAC (Media Access Control) address is encapsulated M-in-M head and is obtained M-in-M message, M-in-M message is sent to SPBM network by the interface corresponding by B-DA in M-in-M message (Backbone Destination MAC, backbone network object MAC) address.
When M-in-M message transmits in SPBM network, BCB equipment is according to B-DA in M-in-M message, B-VLAN searches B-MAC and transmits, if without the B-MAC forwarding-table item of correspondence, abandon this M-in-M message and carry out source filtration, otherwise forward according to the B-MAC forwarding-table item of correspondence.M-in-M message is in repeating process, and BCB equipment can not learn the source MAC of the Ethernet data message of M-in-M message internal layer.
When M-in-M message arrives object BEB (being also termination point of a tunnel), object BEB decapsulation M-in-M message obtains Ethernet data message, study Ethernet data message source MAC, and the interface transmission Ethernet data message in MAC Address list item mate according to the target MAC (Media Access Control) address of the Ethernet data message after decapsulation is to user network.
As can be seen from above message repeating process, in SPBM network, BEB equipment is encapsulated by M-in-M heading, realizes large two layers of forwarding of message.BEB equipment performs M-in-M encapsulation, and to conciliate encapsulation process pressure comparatively large, and due to M-in-M heading longer, make the payload proportion of message too low, cause the network bandwidth to be wasted.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of message processing method and the device that are applied to SPBM network, the processing pressure that BEB equipment performs M-in-M encapsulation and decapsulation can be reduced, reduce network bandwidth waste.
In order to achieve the above object, the invention provides following technical scheme:
A kind of message processing method, is applied to the BEB equipment in SPBM network, comprises:
Receive Ethernet data message;
The Ethernet data message of same object BEB equipment in virtual service instance is determined to mail to according to the target MAC (Media Access Control) address of described Ethernet data message;
Multiple Ethernet data message is selected from the Ethernet data message determined;
Ethernet data message for each selection distributes a sub-Data Identification;
By the subdata mark of selectively Ethernet data message and distribution thereof be encapsulated in in the backbone network MAC Address of the described object BEB equipment expansion SPB data message that is backbone network target MAC (Media Access Control) address;
Described expansion SPB data message is mail to described object BEB.
A kind of message process device, be applied to the BEB equipment in SPBM network, this device comprises: receiving element, determining unit, selected cell, allocation units, encapsulation unit, transmitting element;
Described receiving element, for receiving Ethernet data message;
Described determining unit, for determining to mail to the Ethernet data message of same object BEB equipment in virtual service instance according to the target MAC (Media Access Control) address of described Ethernet data message;
Described selected cell, selects multiple Ethernet data message in the Ethernet data message determined from determining unit;
Described allocation units are that each Ethernet data message that selected cell is selected distributes a sub-Data Identification;
Described encapsulation unit is that subdata mark that it distributes is encapsulated in in the backbone network MAC Address of the described object BEB equipment expansion SPB data message that is backbone network target MAC (Media Access Control) address for all Ethernet data messages of being selected by selected cell and allocation units;
Described transmitting element, for mailing to described object BEB by described expansion SPB data message.
From technical scheme above, in the present invention, by being encapsulated in an expansion SPB data message sending needing to mail to multiple Ethernet data messages of same object BEB equipment in same virtual network example, only need an execution message encapsulation just multiple Ethernet data message can be sent to object BEB equipment, not only can increase the payload proportion of message, but also the encapsulation pressure of source BEB equipment to data message can be alleviated, and the decapsulation pressure of object BEB equipment.
Accompanying drawing explanation
Fig. 1 is prior art SPBM networking schematic diagram;
Fig. 2 is the SPBM example schematic of prior art based on Fig. 1;
Fig. 3 is the flow chart of embodiment of the present invention message processing method;
Fig. 4 is the form schematic diagram of embodiment of the present invention expansion SPB data message;
Fig. 5 is the structural representation of embodiment of the present invention message process device.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing and according to embodiment, technical scheme of the present invention is described in detail.
See the flow chart that Fig. 3, Fig. 3 are embodiment of the present invention message processing methods, the method is applied to the BEB equipment in SPBM network, mainly comprises following step:
Step 301, BEB equipment receive Ethernet data message.
Step 302, BEB equipment determine to mail to the Ethernet data message of same object BEB equipment in virtual service instance according to the target MAC (Media Access Control) address of Ethernet data message.
When BEB equipment receives the Ethernet data message from user network, port and affiliated VLAN according to receiving Ethernet data message determine virtual service instance belonging to Ethernet data message, search according to the target MAC (Media Access Control) address of Ethernet data message the object BEB equipment that corresponding the transmitting of this virtual service instance can determine Ethernet message.The all Ethernet data messages needing to mail to same object BEB equipment in virtual service instance can be determined in this approach.
Step 303, need to mail in the Ethernet data message of same object BEB equipment virtual network example select multiple Ethernet data message from what determine.
For each Ethernet data message needing to mail to same object BEB equipment in same virtual service instance, multiple this kind of Ethernet data message is encapsulated in a large data message and sends, make multiple Ethernet data message only need to perform once encapsulation and a decapsulation.For this reason, each Ethernet data message of same object BEB equipment in virtual service instance that needs to mail to determined can be put into same queue to be sent, to carry out follow-up encapsulation and transmission.
Expansion SPB data message is called below by encapsulating multiple large data message needing to mail to multiple Ethernet data messages of same object BEB equipment in virtual service instance.
Step 304, distribute a sub-Data Identification for the Ethernet data message of each selection.
Because multiple Ethernet message is encapsulated in same expansion SPB data message by needs, in order to distinguish each Ethernet data message in expansion SPB data message, a sub-Data Identification can be distributed for each Ethernet data message, Ethernet data message is encapsulated in expansion SPB data message together with its subdata mark, thus is convenient to identify each Ethernet data message.
Generally, subdata mark can use 1 byte representation, when comprising the situation of subdata identification field in indivedual Ethernet data message, need the escape character (ESC) of adding 1 byte in this Ethernet data message before this subdata mark, to avoid the content recognition in this Ethernet data message as subdata identifies.
Step 305, by the subdata mark of selectively Ethernet data message and distribution thereof be encapsulated in in the backbone network MAC Address of this object BEB equipment expansion SPB data message that is backbone network target MAC (Media Access Control) address.
In one embodiment of the invention, the form of expansion SPB data message specifically can as shown in Figure 4, wherein,
B-DA is backbone network target MAC (Media Access Control) address, and B-SA is backbone network source MAC;
First TPID (Tag Protocol Identifier) and PRI, CFI, B-VLAN tetra-fields with to four the son field one_to_one corresponding be encapsulated in the M-In-M message that obtains when the individual ethernet data message expanded in SPB data message encapsulates in B-Tag field;
Second TPID and I-PCP, I-DEI, UCA, Res1, Res2, I-SID seven fields with to the first seven the son field one_to_one corresponding being encapsulated in I-Tag field in the M-In-M message that obtains when the individual ethernet data message expanded in SPB data message encapsulates;
Length field value indicates the content overall length from all fields after Length field in expansion SPB data message, is also namely encapsulated in the total length of all Ethernet data messages in expansion SPB data message and subdata mark thereof;
Subdata identifies, and indicates the initial of an Ethernet data message;
C-DA-1, C-SA-1, S-TAG-1, C-TAG-1, Ethernettype-1, DATA-1 six fields are the content of first the Ethernet data message be encapsulated in expansion SPB data message; C-DA-2, C-SA-2, S-TAG-2, C-TAG-2, Ethernettype-2, DATA-2 six fields are the content of second the Ethernet data message be encapsulated in expansion SPB data message; C-DA-3, C-SA-3, S-TAG-3, C-TAG-3, Ethernettype-3, DATA-3 six fields are the content of the 3rd the Ethernet data message be encapsulated in expansion SPB data message; By that analogy.
The forwarding principle of expansion SPB data message in SPBM network is identical with the forwarding principle of common M-In-M message, is all carry out according to B-MAC (B-SA, B-DA), B-VLAN forwarding of tabling look-up.
Step 306, expansion SPB data message is mail to object BEB.
After arriving object BEB equipment in expansion SPB data message, object BEB equipment carries out decapsulation to expansion SPB data message and obtains each Ethernet data message, first Ethernet data message such as shown in Fig. 4, second Ethernet data message and the 3rd Ethernet data message, the interface in the MAC Address list item that then just can mate according to the target MAC (Media Access Control) address of each Ethernet data message sends this Ethernet data message to user network.
In the embodiment of the present invention shown in Fig. 3, in order to make can to encapsulate data message as much as possible in expansion SPB data message, expansion SPB data message can adopt huge (Jumbo) frame, and also namely expanding SPB data message is Jumbo frame.The each manufacturer of length of Jumbo frame is different, from 9000 byte ~ 64000 bytes not etc.
No matter expand SPB data message and adopt which kind of frame format, its packet maximum length allowed is determined, be encapsulated into by multiple Ethernet data message after in expansion SPB data message, message overall length can not exceed allowed packet maximum length.Therefore, a maximum number threshold value can be pre-set according to maximum message size, when the number of the Ethernet data message needing to mail to same object BEB equipment in virtual network example reaches default maximum data threshold value, these Ethernet data messages can be encapsulated in same expansion SPB data message and send, ensure that the overall length of expansion SPB data message can not exceed allowed packet maximum length.A maximum length threshold can also be pre-set according to maximum message size, when the Ethernet data message overall length needing to mail to same object BEB equipment in virtual network example reaches default maximum length threshold, these Ethernet data messages can be encapsulated in same expansion SPB data message and send, thus ensure that the overall length of expansion SPB data message can not exceed allowed packet maximum length.
For this reason, in above-mentioned steps 303, need to mail in the Ethernet data message of same object BEB equipment virtual network example select multiple Ethernet data message to comprise from what determine:
At the Ethernet data message needing to mail to same object BEB equipment in virtual network example that same queue storage to be sent is determined;
When the number of the Ethernet data message of queue to be sent reaches default maximum number threshold value, or when the Ethernet data message overall length of queue to be sent reaches default maximum length threshold, select all Ethernet data messages in queue to be sent.
In fact, when the Ethernet data message amount needing to mail to same object BEB equipment in virtual network example is less, in order to avoid Ethernet data message delayed delivery overlong time in the BEB equipment of source, can calculate the life period of Ethernet data message in queue to be sent, in queue to be sent, the number of Ethernet data message does not reach default maximum data threshold value or overall length when not reaching default maximum length threshold, if the life period of the first data message in queue to be sent reaches default maximum time threshold value, then now also can select all Ethernet data messages from queue to be sent, and these Ethernet data messages are encapsulated in same expansion SPB data message and send.
For this reason, in above-mentioned steps 303, need to mail in the Ethernet data message of same object BEB equipment virtual network example select multiple Ethernet data message also to comprise from what determine:
At the Ethernet data message needing to mail to same object BEB equipment in virtual network example that same queue storage to be sent is determined; When reaching maximum time threshold value the memory time of Ethernet data message first in this queue to be sent, select all Ethernet data messages stored in queue to be sent.
In the embodiment that Fig. 3 and Fig. 4 provides, each BEB equipment is encapsulated in a large data message sends mailing to multiple Ethernet data messages of same object BEB equipment in same virtual service instance, large data message only needs use heading just can realize the transmission of multiple Ethernet data message, alleviate source BEB equipment to the pressure of the encapsulation process of Ethernet data message, alleviate the pressure of object BEB equipment decapsulation M-In-M Message processing equally.
Above embodiment of the present invention message processing method is described in detail, has present invention also offers a kind of message process device, be described in detail below in conjunction with Fig. 5.
See Fig. 5, Fig. 5 is the structural representation of embodiment of the present invention message process device, the BEB equipment of this application of installation in SPBM network, specifically comprises: receiving element 501, determining unit 502, selected cell 503, allocation units 504, encapsulation unit 505, transmitting element 506; Wherein,
Receiving element 501, for receiving Ethernet data message;
Determining unit 502, for determining to mail to the Ethernet data message of same object BEB equipment in virtual service instance according to the target MAC (Media Access Control) address of Ethernet data message;
Selected cell 503, selects multiple Ethernet data message in the Ethernet data message determined from determining unit 502;
Allocation units 504 are that each Ethernet data message that selected cell 503 is selected distributes a sub-Data Identification;
Encapsulation unit 505, for all Ethernet data messages of being selected by selected cell 503 and allocation units 504 for subdata mark that it distributes is encapsulated in in the backbone network MAC Address of the object BEB equipment expansion SPB data message that is backbone network target MAC (Media Access Control) address;
Transmitting element 506, for mailing to object BEB by expansion SPB data message.
In Fig. 5 shown device,
Selected cell 503 selects multiple Ethernet data message to comprise from the Ethernet data message determined:
At the Ethernet data message that same queue storage to be sent is determined;
When the number of the Ethernet data message of queue to be sent reaches default maximum number threshold value, or when the Ethernet data message overall length of queue to be sent reaches default maximum length threshold, select all Ethernet data messages in queue to be sent.
In Fig. 5 shown device,
Selected cell 503 selects multiple Ethernet data message to comprise from the Ethernet data message determined: the Ethernet data message determined in same queue storage to be sent; When reaching maximum time threshold value the memory time of Ethernet data message first in queue to be sent, select all Ethernet data messages stored in queue to be sent.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (6)
1. a message processing method, be applied to the BEB equipment in SPBM network, it is characterized in that, the method comprises:
Receive Ethernet data message;
The Ethernet data message of same object BEB equipment in virtual service instance is determined to mail to according to the target MAC (Media Access Control) address of described Ethernet data message;
Multiple Ethernet data message is selected from the Ethernet data message determined;
Ethernet data message for each selection distributes a sub-Data Identification;
By the subdata mark of selectively Ethernet data message and distribution thereof be encapsulated in in the backbone network MAC Address of the described object BEB equipment expansion SPB data message that is backbone network target MAC (Media Access Control) address;
Described expansion SPB data message is mail to described object BEB.
2. method according to claim 1, is characterized in that, the method comprises further: from the Ethernet data message determined, select multiple Ethernet data message to comprise:
At the Ethernet data message that same queue storage to be sent is determined;
When the number of the Ethernet data message of described queue to be sent reaches default maximum number threshold value, or when the Ethernet data message overall length of described queue to be sent reaches default maximum length threshold, select all Ethernet data messages in described queue to be sent.
3. method according to claim 1 and 2, is characterized in that, selects multiple Ethernet data message to comprise from the Ethernet data message determined:
At the Ethernet data message that same queue storage to be sent is determined;
When reaching maximum time threshold value the memory time of Ethernet data message first in described queue to be sent, select all Ethernet data messages stored in described queue to be sent.
4. a message process device, be applied to the BEB equipment in SPBM network, it is characterized in that, this device comprises: receiving element, determining unit, selected cell, allocation units, encapsulation unit, transmitting element;
Described receiving element, for receiving Ethernet data message;
Described determining unit, for determining to mail to the Ethernet data message of same object BEB equipment in virtual service instance according to the target MAC (Media Access Control) address of described Ethernet data message;
Described selected cell, selects multiple Ethernet data message in the Ethernet data message determined from determining unit;
Described allocation units are that each Ethernet data message that selected cell is selected distributes a sub-Data Identification;
Described encapsulation unit is that subdata mark that it distributes is encapsulated in in the backbone network MAC Address of the described object BEB equipment expansion SPB data message that is backbone network target MAC (Media Access Control) address for all Ethernet data messages of being selected by selected cell and allocation units;
Described transmitting element, for mailing to described object BEB by described expansion SPB data message.
5. device according to claim 4, is characterized in that,
Described selected cell selects multiple Ethernet data message to comprise from the Ethernet data message determined:
At the Ethernet data message that same queue storage to be sent is determined;
When the number of the Ethernet data message of described queue to be sent reaches default maximum number threshold value, or when the Ethernet data message overall length of described queue to be sent reaches default maximum length threshold, select all Ethernet data messages in described queue to be sent.
6. the device according to claim 4 or 5, is characterized in that,
Described selected cell selects multiple Ethernet data message to comprise from the Ethernet data message determined:
At the Ethernet data message that same queue storage to be sent is determined;
When reaching maximum time threshold value the memory time of Ethernet data message first in described queue to be sent, select all Ethernet data messages stored in described queue to be sent.
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