CN105187311B - A kind of message forwarding method and device - Google Patents
A kind of message forwarding method and device Download PDFInfo
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- CN105187311B CN105187311B CN201510313125.4A CN201510313125A CN105187311B CN 105187311 B CN105187311 B CN 105187311B CN 201510313125 A CN201510313125 A CN 201510313125A CN 105187311 B CN105187311 B CN 105187311B
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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
- H04L45/74—Address processing for routing
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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
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- 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
- H04L49/3009—Header conversion, routing tables or routing tags
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0227—Filtering policies
- H04L63/0236—Filtering by address, protocol, port number or service, e.g. IP-address or URL
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
- H04L63/101—Access control lists [ACL]
Abstract
The present invention provides a kind of message forwarding method and device, the method includes：Receive the first message that the first terminal in the first virtual LAN is sent；Determining the first instance identification with the first example corresponding to the first virtual LAN；In the MAC address table corresponding with instance identification pre-established, the target MAC (Media Access Control) address of the purpose terminal of the first message is inquired according to the first instance identification；According to target MAC (Media Access Control) address, forward the first encapsulated message to purpose routing bridge, so that the first message that purpose routing bridge obtains after decapsulating to the first encapsulated message is sent to the purpose terminal of the first message, the first encapsulated message is the message for carrying out the first message to obtain after Trill encapsulation.The present invention can be realized the isolation user side virtual LAN in Trill network, improve internet security.
Description
Technical field
The present invention relates to network communication technology field, in particular to a kind of message forwarding method and device.
Background technique
Transparent interconnection of lots of links interconnect (TRansparent Interconnection of Lots of Links, Trill) association
View is by by three-layer routing technology Intermediate System-to-Intermediate System (Intermediate System-to-Intermediate
System, IS-IS) mentality of designing introduce double layer network, to by two layers simple, flexibility and three layers of stabilization, can expand
Exhibition and high-performance organically blend, and are very suitable to the needs that data center constructs large-scale double layer network.
Current Trill network provides the full interconnection of Customer Premises Network, different user side network insertion to Trill network
Any identical two-layer virtual local area network (Virtual Local Area of other distal ends can be reached by Trill network afterwards
Network, VLAN) in, whether belong to the same enterprise customer regardless of these user networks, also no matter the VLAN net of these dispersions
Whether need to interconnect between network or forbid interconnecting, safety is poor.
Summary of the invention
In view of this, the present invention provides a kind of message forwarding method and device, it is user-isolated in Trill network to realize
Side local area network improves internet security.
According to a first aspect of the embodiments of the present invention, a kind of message forwarding method is provided, the method is used for multichain Reuter
The first routing bridge of bright interconnection Trill, the method includes：
Receive the first message that the first terminal in the first virtual LAN is sent；
Determining the first instance identification with the first example corresponding to first virtual LAN；
In the MAC address table corresponding with instance identification pre-established, according to first example
Mark inquires the target MAC (Media Access Control) address of the purpose terminal of first message；
According to the target MAC (Media Access Control) address, forward the first encapsulated message to purpose routing bridge, so that the purpose routing bridge pair
First message obtained after first encapsulated message decapsulation is sent to the purpose terminal of first message, and described the
One encapsulated message is the message for carrying out first message to obtain after Trill encapsulation.
According to a second aspect of the embodiments of the present invention, a kind of apparatus for forwarding message is provided, described device is used for multichain Reuter
The first routing bridge of bright interconnection Trill, including：
First receiving unit, the first message sent for receiving the first terminal being in the first virtual LAN；
Determination unit, for determining the first instance identification with the first example corresponding to first virtual LAN；
Query unit, in the MAC address table corresponding with instance identification pre-established, according to
First instance identification inquires the target MAC (Media Access Control) address of the purpose terminal of first message；
Execution unit, for forwarding the first encapsulated message to purpose routing bridge, so that institute according to the target MAC (Media Access Control) address
It states purpose routing bridge and first message is sent to first message obtained after first encapsulated message decapsulation
Purpose terminal, first encapsulated message are the message for carrying out first message to obtain after Trill encapsulation.
In the embodiment of the present invention, it is pre-configured with example on the routing bridge of Trill network, is distinguished not by instance identification
Same example.Each example can be only fitted at least one routing bridge.Meanwhile user side vlan network is also instantiated
It divides, each vlan network only corresponds to an example.To be communicated between terminal in different vlan networks, then
The identical instance identification of the routing bridge device configuration of terminal access is needed, is thus realized in Trill network to user side
Isolation between local area network, improves internet security.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the application scenarios schematic diagram that message forwarding is realized using the embodiment of the present invention；
Fig. 2 is one embodiment flow chart of message forwarding method of the present invention；
Fig. 3 is another embodiment flow chart of message forwarding method of the present invention；
Fig. 4 is the further embodiment flow chart of message forwarding method of the present invention；
Fig. 5 is a kind of hardware structure diagram of equipment where apparatus for forwarding message of the present invention；
Fig. 6 is one embodiment block diagram of apparatus for forwarding message of the present invention.
Specific embodiment
Technical solution in embodiment in order to enable those skilled in the art to better understand the present invention, and make of the invention real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, with reference to the accompanying drawing to technical side in the embodiment of the present invention
Case is described in further detail.
Referring to Fig. 1, the application scenarios schematic diagram of message forwarding is realized for the application embodiment of the present invention：
In Fig. 1, routing bridge (Routing Bridge, RBridge) equipment is responsible for the message sent to first terminal and is carried out
Forwarding wherein has the access of user side vlan network under RB1-RB4 equipment.Any two RBridge equipment in the prior art
Between all establish Trill connection, i.e., the terminal in all VLAN can interconnect, and the safety of network is poor.
In the present invention, vlan network Case-based Reasoning is divided.Each vlan network can only belong to an example.Simultaneously
Corresponding example, the routing bridge only identified by being configured with same instance between two terminals are pre-configured with to routing bridge device
Equipment can be communicated.It is illustrated below.
As shown in Figure 1, needing to configure on RB1 and RB3 when user network VLAN1 and user network VLAN3 need to interconnect
Identical example 1, corresponding instance identification are Trill 1.VLAN1 is set on RB1 and belongs to example 1, is arranged on RB3
VLAN3 also belongs to example 1.In this way, RB1 can determine whether and PC100 institute when receiving the first message of the transmission of terminal PC 100
Corresponding first instance identification of the first example belonged to is forwarded to after the first message is carried out Trill encapsulation and has been pre-configured with institute
State the RB3 of the first example.
In the above process, PC100 is only communicated between PC300, not mutual with the terminal in other vlan networks
Connection, improves internet security.
It referring to fig. 2, is one embodiment flow chart of message forwarding method of the present invention, which sets from the first routing bridge
It is standby to be described, in the present embodiment, the profile instance on each routing bridge in advance is needed, and release, wherein each example
It can be only fitted at least one routing bridge, so that each routing bridge is configured according to the example oneself configured and other routing bridges
Example, establish the Trill route forwarding table of Case-based Reasoning.In addition, each routing bridge also needs to configure virtual LAN and reality
The corresponding relationship of example, each virtual LAN only correspond to an example.
Message forwarding includes the following steps：
Step 201：Receive the first message that the first terminal in the first virtual LAN is sent.
First route bridging receives the first message of the transmission of the first terminal in the first virtual LAN, optionally, first
Message be address resolution protocol (Address Resolution Protocol, ARP) request message or arp response message, it is described
First message can also be other data messages.Detailed process is identical as existing way, and details are not described herein.
Step 202：Determining the first instance identification with the first example corresponding to first virtual LAN.
In the present embodiment, each routing bridge has been pre-configured with the corresponding relationship of virtual LAN and example.Optionally,
The corresponding relationship being configured between the parameter identification of local area network and instance identification.The parameter identification is to receive first message
Port port-mark；And/or the LAN ID of local area network.
The first via can be identified the corresponding relationship between instance identification by bridge device according to preconfigured above-mentioned parameter, really
Fixed the first instance identification corresponding with first parameter identification.
Two tables can be generally safeguarded in routing bridge device.One is media access control (Media Access
Control, MAC) address table, the source MAC of the first terminal for learning to send message, and search the mesh of message transmission
MAC Address corresponding to RBridge equipment；The other is Trill route forwarding table, carries out message forwarding in the domain Trill
When use, i.e., how message reaches outlet routing bridge from entrance routing bridge.
In step 202, the first via is also needed to learn the source MAC of the first message by bridge device.The i.e. described side
Method further includes (being not shown in Fig. 2)：
Step 202-1：Learn the source MAC of first message, with safeguarding the MAC corresponding with instance identification
Location table.
The first via by bridge device study first terminal source MAC, by source MAC, virtual LAN parameter identification,
First instance identification, first routing bridge the first routing bridge identification record into the mac address table.Virtual local area network mark
Know optionally, for the port-mark of the port of reception first message；And/or the LAN ID of local area network.
Step 202-2：According to first instance identification, MAC Address notification packet is sent to being pre-configured with described the
The secondary route bridge of one example, so that the secondary route bridge safeguards the mac address table corresponding with instance identification of itself, it is described
It include the source MAC and first instance identification in MAC Address notification packet.
In view of existing Trill ISIS agreement has good scalability, it is only necessary to increase class in ISIS protocol massages
Type-word section can carry corresponding instance identification.In the present embodiment, optionally, the MAC Address notification packet uses ISIS
Protocol massages.Source MAC, the first instance identification are encapsulated in ISIS protocol massages to being pre-configured with first example
Each secondary route bridge publication, after secondary route bridge receives MAC Address notification packet, parse the first instance identification, first
The above content parsed is recorded the by the source MAC of terminal, virtual LAN parameter identification, the first routing bridge mark
In the mac address table corresponding with the first instance identification of two routing bridges.
It, can if the subsequently received target MAC (Media Access Control) address of secondary route bridge is the message of the MAC Address of the first terminal
With directly according to the mac address table corresponding with the first instance identification of itself, the routing bridge where determining the first terminal is
First routing bridge, to carry out subsequent forwarding.
It is configured with itself is safeguarded by interaction MAC Address notification packet between the routing bridge of same instance and instance identification
Corresponding mac address table.
In the present embodiment, since Case-based Reasoning identifies the study of progress MAC Address and Trill route forwarding table items,
Reduce the creation of the Trill forwarding-table item between routing bridge device, at the same decrease unnecessary station address save and
Network flood.
Step 203：In the MAC address table corresponding with instance identification pre-established, according to described
First instance identification inquires the target MAC (Media Access Control) address of the purpose terminal of first message.
The first message is inquired in the mac address table corresponding with instance identification for needing to pre-establish on the first routing bridge
Target MAC (Media Access Control) address.In the present embodiment, the purpose should be inquired in the first mac address table corresponding with the first instance identification
MAC Address.Query process is identical as existing way, and details are not described herein.
Step 204：According to the target MAC (Media Access Control) address, forward the first encapsulated message to purpose routing bridge, so that the purpose
The purpose that first message that routing bridge obtains after decapsulating to first encapsulated message is sent to first message is whole
End, first encapsulated message are the message for carrying out first message to obtain after Trill encapsulation.
In the present embodiment, after determining target MAC (Media Access Control) address, optionally, need to carry out Trill according to the type of destination address
Head encapsulation.
I.e. before executing step 204, step 203-1 is executed.
Step 203-1：Judge whether the target MAC (Media Access Control) address is unicast address.
When the target MAC (Media Access Control) address is unicast address, step 204 includes：
Step 204-1：The first mac address table corresponding with first instance identification on first routing bridge is inquired,
Determine the purpose routing bridge mark of the purpose routing bridge of first message.
In the present embodiment, optionally, the first message can be ARP message or data message.When the purpose of certain data message
In the presence of MAC Address is in first mac address table on the first routing bridge, it can be directly determined according to target MAC (Media Access Control) address
The purpose routing bridge of corresponding purpose routing bridge identifies；Otherwise, it needs first to send ARP request message, to obtain the datagram
The target MAC (Media Access Control) address of the purpose terminal of text.After purpose terminal receives ARP request message, generates arp reply message and pass through
The routing bridge of itself connection is sent to the first routing bridge, and the first routing bridge has learnt after the source MAC of arp reply message (i.e.
Learn the target MAC (Media Access Control) address to the data message), when retransmiting the data message, it will be able to instance identification pair
The target MAC (Media Access Control) address of the data message is inquired in the mac address table answered, so that it is determined that the purpose road of corresponding purpose routing bridge
It is identified by bridge.
Step 204-2：The entry bridge mark of first encapsulated message is identified as with the routing bridge of first routing bridge,
It is identified as the outlet bridge mark of first encapsulated message with the purpose routing bridge, Trill head is carried out to first message
Encapsulation, obtains first encapsulated message.
It regard the purpose routing bridge mark of the purpose routing bridge inquired in the first mac address table as the outlet bridge mark
Know, is packaged according to this purpose routing bridge, obtains the first encapsulated message.
Step 204-3：Forward first encapsulated message to the purpose routing bridge, so that the purpose routing bridge is to institute
State the purpose terminal that first message obtained after the decapsulation of the first encapsulated message is sent to first message.
The process forwarded at this time is identical as existing way, and details are not described herein.
When the target MAC (Media Access Control) address is not unicast address, i.e., the described target MAC (Media Access Control) address is multicast address or broadcast address
When, purpose routing bridge is configured with the secondary route bridge of the first example, and step 204-2 is specially：
It is identified as the entry bridge mark with the routing bridge of first routing bridge, to be pre-configured with first example
The routing bridge of the secondary route bridge be identified as outlet bridge mark, unicast Trill is carried out to first message and is sealed
Dress, obtains first encapsulated message.
Step 204-2 is specially：
Forward first encapsulated message to each secondary route bridge by mode of unicast.
When the target MAC (Media Access Control) address inquired is broadcast address or multicast address, then first example is being configured with
The first encapsulated message is broadcasted on secondary route bridge.
Optionally, in order to reduce the calculating of multicast tree, trill is encapsulated to each secondary route bridge for being configured with the first example
Head directly carries out unicast transmission to each secondary route bridge respectively from the first via from bridge device.
In the present embodiment, after configuring Trill example in these routing bridge devices through the above steps, optionally, pass through
Trill ISIS protocol massages flood Trill example information in network, and each equipment can learn to other routing bridges to set
Standby upper Trill example information.Each routing bridge device can create the company for reaching other routing bridge opposite ends based on Trill example
It connects, to carry out message forwarding, but connection will not established between the routing bridge device of identical Trill example.
Above-mentioned step is that the first terminal received in the first via by bridge device in the first virtual LAN is sent
The first message after, the process of the message of progress forwarding.In practical applications, the first via is by bridge device in addition to receiving first terminal
Outside the message of transmission, the message that other routing bridge devices are sent can also be received, i.e., the method for the described message forwarding optionally, is gone back
Including (being not shown in Fig. 2)：
Step 205：The second encapsulated message that third routing bridge is sent is received, second encapsulated message is that will be in second
The message that the second message that the second terminal of virtual LAN is sent obtains after Trill encapsulation, and second encapsulation
The second instance identification of the second example corresponding with second virtual LAN is carried in message.
The second message that second terminal is sent obtains the second encapsulation report after third routing bridge carries out Trill encapsulation
Text.Third routing bridge device is forwarded in Trill network, is sent to the first via by bridge device.
Step 206：The routing bridge of the outlet bridge mark and first routing bridge that judge second encapsulated message identifies
It is whether identical.
When the outlet bridge of second encapsulated message mark is identical as the routing bridge mark of first routing bridge, execute
Step 207, no to then follow the steps 209.Deterministic process is identical as existing way, and details are not described herein.
Step 207：According to second instance identification, judge described whether has been pre-configured on first routing bridge
Two examples.
Optionally, the first via is corresponding between the parameter identification and instance identification of preconfigured local area network by bridge device
In relation table, the second instance identification is judged whether there is, judges whether to be configured with the second example with this.When first routing bridge
On when being pre-configured with second example, execute step 208, otherwise abandon the message.
Step 208：According to second instance identification, described second is sent to after decapsulating to second encapsulated message
The purpose terminal of message.
The first via falls message Trill head by bridge device bullet, then according to the destination address in the second message after decapsulation
It is forwarded.If the second encapsulated message is unknown multicast or broadcasting packet, the first via falls the second message by bridge device bullet
It is broadcasted in the second example of configuration after Trill, to be sent to purpose terminal.
Step 209：It is identified according to the second outlet bridge, forwards second encapsulated message.
If the second example is not configured by bridge device in the first via, the second encapsulated message cannot be decapsulated, need to continue
It is identified according to the outlet bridge of second encapsulated message, forwards second encapsulated message.
Optionally, in the present embodiment, multicast can also accomplish on-demand multicast, when routing the Customer Premises Network hung under bridge device
It is middle there are when the recipient of some multicast group, routing bridge device noticed to other routing bridge devices oneself be the multicast group reception
Person, each routing bridge can execute this notice, and the multicast group for saving other routing bridge device publications receives message, later multicast
Source route bridge equipment will successively be broadcasted to each routing bridge member device transmission group of multicast group according to multicast group recipient list
Text, message carry unicast Trill head, and entry bridge is identified as this routing bridge device, and outlet bridge is identified as the routing bridge mark of recipient
Know.These messages are forwarded to purpose equipment in Trill network with unicast fashion, after bullet falls Trill in purpose equipment by
It is forwarded according to user multicast address.
In above-described embodiment, it is pre-configured with example on the routing bridge of Trill network, difference is distinguished by instance identification
Example.Each example can be only fitted at least one routing bridge.Meanwhile instantiation division is also carried out to Customer Premises Network,
Each virtual LAN only corresponds to an example.When receiving the first message of first terminal transmission, it is based on the first example mark
Knowledge, which E-Packets, is configured with the secondary route bridge device of the first example；If it is receive that third routing bridge device sends the
Two encapsulated messages, then first judge the first routing bridge routing bridge mark and the second encapsulated message outlet bridge identify whether it is identical,
If then further judging whether itself has been configured with the second example, Trill head is decapsulated if being configured with the second example, and
It is sent to purpose terminal；If not configuring the second example, the message is abandoned.
The present embodiment is by the above process, it is ensured that is carried out between terminal by being configured with the routing bridge of same instance mark
Message forwarding, is thus realizing to the isolation between user side virtual LAN in Trill network, is improving network security
Property.
It is another embodiment flow chart of message forwarding method of the present invention referring to Fig. 3, which is set by routing bridge
Interaction between standby, is described in detail the message repeating process of the embodiment of the present invention：
Before carrying out message forwarding, it is necessary first to execute step 300 (being not shown in Fig. 3)：
Step 300：Instantiation division is carried out in Trill network, each Trill example corresponds at least one routing bridge and sets
Standby, each vlan network can only belong to an example.
After routing bridge device configuration example, the example information of configuration is flooded away by Trill ISIS, so that net
Other routing bridge learning equipments in network are to this example information.The routing bridge device for not configuring the example only saves the reality
Example information, will not receive the mac address information of Case-based Reasoning information publication.
Other members in example also can periodically flood the example information of oneself, the routing bridge device being newly added and other set
After establishing Trill connection between standby, on the one hand local user's MAC address information and multicast group information are published in example
On the one hand other members also can receive user's MAC address notice message and multicast group notice message from other members.Work as routing bridge
When deleting an example in equipment, which can go out the information from flooding for deleting example, while delete local preservation
The relevant Trill connection of the example, user's MAC address and multicast group information, other routing bridge devices receive the equipment
It will be deleted after deletion example information and connect with the Trill of the equipment, with deleting all user MAC in the example of equipment publication
Location information and multicast group information.
Optionally, the corresponding relationship being pre-configured between the parameter identification of local area network and instance identification, the parameter identification
For the port-mark for routing bridge device, and/or the LAN ID of the access virtual LAN for routing bridge device.
Step 301：Receive the first message that the first terminal in the first virtual LAN is sent.
First route bridging receive first terminal transmission the first message, optionally, the first message be ARP request message,
Arp response message or other data messages.
Step 302：Determining the first instance identification with the first example corresponding to first virtual LAN.
Optionally, the first via can be according between the parameter identification and instance identification of preconfigured local area network by bridge device
Corresponding relationship determines the first instance identification corresponding with first parameter identification.
Step 303：Learn the source MAC of first message, to safeguard the MAC corresponding with instance identification
Address table.
The first via is learnt the source MAC of the first message, the i.e. MAC Address of first terminal by bridge device, by source MAC, void
Quasi- local area network parameter identification, the first instance identification, first routing bridge the first routing bridge identification record to the MAC Address
In table.VLAN ID optionally, for receive first message port port-mark；And/or the office of local area network
Domain network mark is known.
Step 304：According to first instance identification, MAC Address notification packet is sent to being pre-configured with described first
The secondary route bridge of example, so that the secondary route bridge safeguards itself mac address table corresponding with instance identification, wherein described
The source MAC and first instance identification are carried in MAC Address notification packet.
In view of existing Trill ISIS agreement has good scalability, it is only necessary to increase class in ISIS protocol massages
Type-word section can carry corresponding instance identification.In the present embodiment, MAC Address notification packet optionally, using ISIS agreement
Message.Source MAC, the first instance identification are encapsulated in ISIS protocol massages to being pre-configured with each of first example
A secondary route bridge publication, after secondary route bridge receives MAC Address notification packet, parses the first instance identification, first terminal
Source MAC, virtual LAN parameter identification, the first routing bridge mark, the second tunnel is recorded in the above content parsed
By being used in case of subsequent forwarding in the mac address table corresponding with the first instance identification of bridge.
In the present embodiment, since Case-based Reasoning identifies the study of progress MAC Address and Trill route forwarding table items,
Reduce the creation of the Trill forwarding-table item between routing bridge device, at the same decrease unnecessary station address save and
Network flood.
Step 305：In the MAC address table corresponding with instance identification pre-established, according to described
First instance identification inquires the target MAC (Media Access Control) address of first message.
Need to inquire the target MAC (Media Access Control) address of the first message in mac address table corresponding with instance identification.The present embodiment
In, the target MAC (Media Access Control) address should be inquired in the first mac address table corresponding with the first instance identification.Query process with it is existing
Mode is identical, and details are not described herein.
Step 306：Judge whether the target MAC (Media Access Control) address is unicast address.If the target MAC (Media Access Control) address is for unicast
Location thens follow the steps 307, no to then follow the steps 310.
Step 307：The first mac address table corresponding with first instance identification on first routing bridge is inquired, really
The purpose routing bridge mark of the purpose routing bridge of fixed first message.
It needs to determine purpose routing bridge in the first mac address table corresponding with the first instance identification in the present embodiment.
Step 308：The entry bridge mark of first encapsulated message is identified as with the routing bridge of first routing bridge, with
The purpose routing bridge is identified as the outlet bridge mark of first encapsulated message, carries out Trill envelopes to first message
Dress, obtains first encapsulated message.
Wherein, when the target MAC (Media Access Control) address is not unicast address, the purpose routing bridge is to be pre-configured with described
The secondary route bridge device of one mark.
By the purpose routing bridge mark of the purpose routing bridge inquired in the first mac address table as first encapsulation
The outlet bridge of message identifies, and is packaged according to this purpose routing bridge, obtains the first encapsulated message.
Step 309：Forward first encapsulated message to the purpose routing bridge.
When the target MAC (Media Access Control) address inquired is broadcast address or multicast address, then first example is being configured with
The first encapsulated message is broadcasted on secondary route bridge.
Optionally, in order to reduce the calculating of multicast tree, trill is encapsulated to each secondary route bridge for being configured with the first example
Head directly carries out unicast transmission to each secondary route bridge respectively from the first via from bridge device.
Step 310：The third routing bridge judges the outlet bridge of the routing bridge mark and first encapsulated message of itself
Identify whether identical, the outlet bridge of the first encapsulated message is identified as the routing bridge mark of secondary route bridge in the present embodiment, with the
The routing bridge of three routing bridges identifies difference, executes step 311 at this time.
Step 311：According to first instance identification, forward first encapsulated message to secondary route bridge device.
Step 312：Secondary route bridge judges that the routing bridge mark of itself and the outlet bridge of first encapsulated message identify
Whether identical (in the present embodiment secondary route bridge mark identical as the outlet bridge mark of first encapsulated message), if identical
Then follow the steps 313.
Step 313：Secondary route bridge judges whether to be pre-configured with the first example.
Optionally, secondary route bridge device is corresponding between the parameter identification and instance identification of preconfigured local area network
In relation table, the first instance identification is judged whether there is, judges whether to be configured with the first example with this.When the secondary route bridge
On when being pre-configured with first example, execute step 317, otherwise abandon the message (being not shown in Fig. 3).
Step 314：According to second instance identification, secondary route bridge is sent after decapsulating to second encapsulated message
To the purpose terminal of second message.
Secondary route bridge device bullet falls message Trill head, then according to the destination address in the first message after decapsulation
It is forwarded.If the first encapsulated message is unknown multicast or broadcasting packet, secondary route bridge device bullet falls the first message
It is broadcasted in the first example of configuration after Trill, to be sent to purpose terminal.
In the present embodiment, it is pre-configured with example on the routing bridge of Trill network, is distinguished by instance identification different
Example.Each example can be only fitted at least one routing bridge.Meanwhile instantiation division is also carried out to Customer Premises Network, often
A virtual LAN can only belong to an example.When the first via receives the first message of first terminal transmission by bridge device,
It is E-Packeted based on the first instance identification and is configured with the secondary route bridge device of the first example；When third routing bridge device receives
When to the first encapsulated message, judge that the outlet bridge mark of the first encapsulated message is different from the routing bridge mark of itself, then continues turn
The message is sent out to secondary route bridge device；Secondary route bridge device judges the first encapsulation report when receiving the first encapsulated message
The outlet bridge mark of text is identical as the routing bridge mark of itself, further judges itself whether be configured with and the first encapsulation
Corresponding first example of the first instance identification carried in message, if being configured with the first example, decapsulation the first encapsulation report
Text, and it is sent to purpose terminal, otherwise abandon the message.
It thus ensures and carries out message forwarding by being configured with the routing bridge of same instance mark between terminal, in Trill
It is realized in network to the isolation between user side virtual LAN, improves internet security.
Below by taking application scenarios shown in FIG. 1 as an example, in conjunction with specific embodiments to above-mentioned message forwarding process carry out into
One step explanation, as shown in figure 4, including：
Step 400 (is not shown) in Fig. 4：Two examples, respectively example 1 and example 2 are configured on routing bridge RB1,
Corresponding relationship between middle parameter identification and instance identification is as shown in table 1.
Table 1
| Instance name | Instance identification | Port-mark | LAN ID |
| Example 1 | Trill 1 | Port 1-1 | VLAN1 |
| Example 2 | Trill 2 | Port 1-2 | VLAN5 |
An example is configured on routing bridge RB3 --- example 1, wherein between parameter identification and instance identification it is corresponding pass
System is as shown in table 2.
Table 2
| Instance name | Instance identification | Port-mark | LAN ID |
| Example 1 | Trill 1 | Port 3-1 | VLAN3 |
RB1 and RB3 configures identical example 1, and RB1 and RB3 are released example information by Trill ISIS, other
RBridge equipment all learn to this example information, RB2 and RB4 due to not configuring the example, only save these examples
Information.
RB1 and RB3 mutually learns to have arrived the Trill routing of other side, and all study to other side there are identical example 1, because
This establishes the Trill unicast forwarding table of the arrival RB3 of Case-based Reasoning 1, including the head Trill encapsulating sheet and decapsulation on RB1
Table；Establish the broadcast table of Case-based Reasoning 1, there are nodes corresponding with example 1 on RB3 in broadcast table.
Equally established on RB3 Case-based Reasoning 1 arrival RB1 Trill forwarding table, including the head Trill encapsulating sheet and
Decapsulate table；Establish the broadcast table of Case-based Reasoning 1, there are nodes corresponding with example 1 on RB1 in broadcast table.
Step 401：RB1 receives the first message of first terminal PC100 transmission by port 1-1, and the first message is
Unicast message, PC100 belong to virtual LAN VLAN 1.
Step 402：It can determine that first terminal PC100 belongs to example 1 according to table 1, the example is identified as Trill 1.
Step 403：RB1 learns the source MAC MAC100 of PC100, and MAC Address MAC100 is distributed to and is configured with phase
With identical example is not present on routing the bridge device RB3, other RB2, RB4 of example 1, the address MAC100 will not be issued to it and believed
Breath.
Similarly, the MAC Address MAC300 for the PC300 that RB3 also learns itself floods away.
Step 404：RB1 safeguards the first MAC table corresponding with the first instance identification by the study to source MAC.When
The source MAC of first message is MAC100, and when target MAC (Media Access Control) address is MAC300, RB1 searches the first MAC table, knows MAC300
On the RB3 of Trill network.
Step 405：Then RB1 is that the ARP message encapsulates Trill head, and entry bridge is identified as the mark of RB1, exports bridge
It is identified as the mark of RB3.
Step 406：RB1 and RB3 Case-based Reasoning 1 interconnect, Trill routing of the RB1 study from RB1 to RB3, specially RB1
RB3 is reached by next-hop RB5.
Step 407：RB1 searches the Trill routing table for reaching RB3, and the next-hop for finding RB3 to be reached has RB5, then
RB1 fills purpose routing bridge MAC Address and is the MAC of RB5, and fills the MAC that source route bridge MAC Address is its own RB1, and will
This message is sent to RB5.
Step 408：RB5 receives the message and is the discovery that Trill unicast message, and destination RB3, RB5 are directly searched
Trill routing table, finding RB3 is exactly the neighbours on oneself certain interface, and then modifying purpose routing bridge MAC Address is RB3's
MAC, while the MAC that source route bridge MAC Address is its own RB5 is modified, forward the message.
Step 409：After RB3 receives the message, it is found that this message purpose mark is its own, then judge whether itself configures
Example 1.
Step 410：When RB3 is configured with example 1, the encapsulated message is decapsulated.
Step 411：Message after decapsulation continues two layers of forwarding, is sent in the example 1 of itself configuration
PC300。
After PC300 receives ARP request message, carry out arp reply, send PC100 for arp reply message, process with
The above process is identical, no longer introduces one by one herein.
In the present embodiment, if the first message is broadcasting packet, such as first message is ARP request message
When, then RB1 broadcasts the message in example 1, using Trill packaged type duplications of unicast, sends encapsulation Trill head to RB3
Encapsulated message afterwards.RB3 receives encapsulated message, and bullet falls Trill head, broadcasts in example 1, is sent to PC300.
Arp response message is unicast message, and transmission process is same as described above, and details are not described herein.
In the present embodiment, the routing bridge RB1 and RB3 that are identified between terminal PC 100 and PC300 by being configured with same instance
Message forwarding is carried out, is realizing in Trill network to the isolation between user side virtual LAN, is improving network security
Property.
Corresponding with aforementioned message forwarding method embodiment, the present invention also provides the embodiments of apparatus for forwarding message.
The embodiment of apparatus for forwarding message of the present invention can also pass through hardware or software and hardware knot by software realization
The mode of conjunction is realized.It taking software implementation as an example, is the processor by equipment where it as the device on a logical meaning
Computer program instructions corresponding in nonvolatile memory are read into memory what operation was formed.For hardware view,
As shown in figure 5, for a kind of hardware structure diagram of equipment where apparatus for forwarding message of the present invention, in addition to processor shown in fig. 5, net
Except network interface, memory and nonvolatile memory, the equipment in embodiment where device usually can also include that other are hard
Part, such as it is responsible for the forwarding chip of processing message；The equipment is also possible to be distributed equipment from hardware configuration, can
It can include multiple interface cards, to carry out the extension of Message processing in hardware view.
It is one embodiment block diagram of apparatus for forwarding message of the present invention referring to Fig. 6, described device is applied for Trill
By in bridge device, described device includes the first via：First receiving unit 610, determination unit 620, query unit 630 and execute list
Member 640.
Wherein, the first receiving unit 610, first sent for receiving the first terminal being in the first virtual LAN
Message；
Determination unit 620, for determining the first example mark with the first example corresponding to first virtual LAN
Know；
Query unit 630, in the MAC address table corresponding with instance identification pre-established,
The target MAC (Media Access Control) address of the purpose terminal of first message is inquired according to first instance identification；
Execution unit 640, for forwarding the first encapsulated message to purpose routing bridge according to the target MAC (Media Access Control) address, so that
First message that the purpose routing bridge obtains after decapsulating to first encapsulated message is sent to first message
Purpose terminal, first encapsulated message be will first message carry out Trill encapsulate after obtained messages.
In an optional implementation：
The determination unit 620 includes：
First determines subelement, for determining the first parameter identification of first local area network, wherein first parameter
Be identified as the first port for receiving first message first port mark and/or first virtual LAN first
LAN ID；
Second determines subelement, for according to the corresponding relationship between preconfigured parameter identification and instance identification, really
Fixed first instance identification corresponding with first parameter identification.
In another optional implementation：
Described device further includes (being not shown in Fig. 6)：
Unit, for learning the source MAC of first message, to safeguard the institute corresponding with instance identification
State mac address table；
First transmission unit, for according to first instance identification, sending MAC Address notification packet to being pre-configured with
The secondary route bridge of first example, so that the secondary route bridge safeguards itself mac address table corresponding with instance identification,
It include the source MAC and first instance identification in the MAC Address notification packet.
In another optional implementation：
The execution unit 640 includes：
Subelement is inquired, for inquiring on first routing bridge first MAC corresponding with first instance identification
Location table determines the purpose routing bridge mark of the purpose routing bridge of first message；
Subelement is encapsulated, for being identified as the entry bridge of first encapsulated message with the routing bridge of first routing bridge
Mark is identified as the outlet bridge mark of first encapsulated message with the purpose routing bridge, carried out to first message
Trill encapsulation, obtain first encapsulated message；
Subelement is forwarded, for forwarding first encapsulated message to the purpose routing bridge, so that the purpose routes
First message that bridge obtains after decapsulating to first encapsulated message is sent to the purpose terminal of first message.
In another optional implementation：
Described device further includes (being not shown in Fig. 6)：
First judging unit, for judging whether the target MAC (Media Access Control) address is unicast address；
When the target MAC (Media Access Control) address is not unicast address, the purpose routing bridge is to be pre-configured with described first in fact
The secondary route bridge of example；
The forwarding subelement is specifically used for forwarding first encapsulated message to each described second by mode of unicast
Routing bridge.
In another optional implementation：
Described device further includes (being not shown in Fig. 6)：
Second receiving unit, for receiving the second encapsulated message of third routing bridge transmission, second encapsulated message is
The message that the second message that second terminal in the second virtual LAN is sent is obtained after Trill encapsulation, and institute
State the second instance identification that the second example corresponding with second virtual LAN is carried in the second encapsulated message；
Second judgment unit, the road of outlet bridge mark and first routing bridge for judging second encapsulated message
It is identified whether by bridge identical；
Third judging unit, the routing for outlet bridge mark and first routing bridge when second encapsulated message
When bridge mark is identical, according to second instance identification, judge whether be pre-configured with described second on first routing bridge
Example；
Decapsulation unit, for when being pre-configured with second example on first routing bridge, according to described
Two instance identifications, to the purpose terminal for being sent to second message after second encapsulated message decapsulation.
In another optional implementation：
Described device further includes (being not shown in Fig. 6)：
Second transmission unit, the routing for outlet bridge mark and first routing bridge when second encapsulated message
It when bridge mark is different, is identified according to the outlet bridge of second encapsulated message, forwards second encapsulated message.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize the present invention program.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
As seen from the above-described embodiment, it when the first via receives the first message of first terminal transmission by bridge device, is based on
First instance identification, which E-Packets, is configured with the secondary route bridge device of the first example；When third routing bridge device receives the
When one encapsulated message, judge that the outlet bridge mark of the first encapsulated message is different from the routing bridge mark of itself, then continuing forwarding should
Message is to secondary route bridge device；Secondary route bridge device judges the first encapsulated message when receiving the first encapsulated message
It is identical as the routing bridge mark of itself to export bridge mark, further judges itself whether be configured with and the first encapsulated message
Corresponding first example of first instance identification of middle carrying decapsulates the first encapsulated message if being configured with the first example, and
It is sent to purpose terminal, otherwise abandons the message.
By the above process, it is ensured that carry out message turn by being configured with the routing bridge of same instance mark between terminal
Hair, is thus realizing to the isolation between user side virtual LAN in Trill network, is improving internet security.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (12)
1. a kind of message forwarding method, the method interconnects the first routing bridge of Trill for transparent interconnection of lots of links, which is characterized in that
The method includes：
Receive the first message that the first terminal in the first virtual LAN is sent；
Determining the first instance identification with the first example corresponding to first virtual LAN；
Learn the source MAC of first message, to safeguard mac address table corresponding with instance identification；
According to first instance identification, MAC Address notification packet is sent to the second tunnel for being pre-configured with first example
By bridge, so that the secondary route bridge safeguards the mac address table corresponding with instance identification of itself, the MAC Address notice report
It include the source MAC and first instance identification in text；
In the MAC address table corresponding with instance identification pre-established, according to first instance identification
Inquire the target MAC (Media Access Control) address of the purpose terminal of first message；
According to the target MAC (Media Access Control) address, forward the first encapsulated message to purpose routing bridge, so that the purpose routing bridge is to described
First message obtained after the decapsulation of first encapsulated message is sent to the purpose terminal of first message, first envelope
Dress message is the message for carrying out first message to obtain after Trill encapsulation.
2. the method as described in claim 1, which is characterized in that the corresponding to the determination and first virtual LAN
First instance identification of one example includes：
The first parameter identification of first virtual LAN is determined, wherein first parameter identification is to receive first report
The first port mark of the first port of text and/or the first LAN ID of first virtual LAN；
According to the corresponding relationship between preconfigured parameter identification and instance identification, determination is corresponding with first parameter identification
First instance identification.
3. the method as described in claim 1, which is characterized in that described according to the target MAC (Media Access Control) address, forwarding the first encapsulation report
Text arrives purpose routing bridge, so that first message that the purpose routing bridge obtains after decapsulating to first encapsulated message
The purpose terminal for being sent to first message includes：
The first mac address table corresponding with first instance identification on first routing bridge is inquired, determines first report
The purpose routing bridge mark of purpose routing bridge where the purpose terminal of text；
It is identified as the entry bridge mark of first encapsulated message, with the routing bridge of first routing bridge with purpose routing
Bridge is identified as the outlet bridge mark of first encapsulated message, carries out Trill to first message and encapsulates, obtains described the
One encapsulated message；
Forward first encapsulated message to the purpose routing bridge, so that the purpose routing bridge is to first encapsulated message
First message obtained after decapsulation is sent to the purpose terminal of first message.
4. the method as described in claim 1, which is characterized in that in the media interviews control corresponding with instance identification pre-established
In mac address table processed, according to first instance identification inquire the purpose terminal of first message target MAC (Media Access Control) address it
Afterwards, the method also includes：
Judge whether the target MAC (Media Access Control) address is unicast address；
When the target MAC (Media Access Control) address is not unicast address, the purpose routing bridge is to be pre-configured with first example
Secondary route bridge；
First encapsulated message is forwarded to be specially to the purpose routing bridge：
Forward first encapsulated message to each secondary route bridge by mode of unicast.
5. method as claimed in claim 3, which is characterized in that the method also includes：
The second encapsulated message that third routing bridge is sent is received, second encapsulated message is will be in the second virtual LAN
The second message that second terminal is sent obtained message after Trill encapsulation, and carried in second encapsulated message and
Second instance identification of corresponding second example of second virtual LAN；
The routing bridge of the outlet bridge mark and first routing bridge that judge second encapsulated message identifies whether identical；
When the outlet bridge of second encapsulated message mark is identical as the routing bridge mark of first routing bridge, according to described
Second instance identification judges second example whether has been pre-configured on first routing bridge；
When being pre-configured with second example on first routing bridge, according to second instance identification, to described
Second message obtained after the decapsulation of two encapsulated messages is sent to the purpose terminal of second message.
6. method as claimed in claim 5, which is characterized in that when the outlet bridge mark of second encapsulated message and institute
State the first routing bridge routing bridge mark it is different when, the method also includes：
It is identified according to the outlet bridge of second encapsulated message, forwards second encapsulated message.
7. a kind of apparatus for forwarding message, described device interconnects the first routing bridge of Trill for transparent interconnection of lots of links, which is characterized in that
Described device includes：
First receiving unit, the first message sent for receiving the first terminal being in the first virtual LAN；
Determination unit, for determining the first instance identification with the first example corresponding to first virtual LAN；
Query unit, in the MAC address table corresponding with instance identification pre-established, according to described
First instance identification inquires the target MAC (Media Access Control) address of the purpose terminal of first message；
Execution unit, for forwarding the first encapsulated message to purpose routing bridge, so that the mesh according to the target MAC (Media Access Control) address
Routing bridge the purpose of first message is sent to obtained first message after first encapsulated message decapsulation
Terminal, first encapsulated message are the message for carrying out first message to obtain after Trill encapsulation；
Wherein, described device further includes：
Unit, for learning the source MAC of first message, with safeguarding the MAC corresponding with instance identification
Location table；
First transmission unit, for it is described to being pre-configured with to send MAC Address notification packet according to first instance identification
The secondary route bridge of first example, so that the secondary route bridge safeguards the mac address table corresponding with instance identification of itself, institute
State includes the source MAC and first instance identification in MAC Address notification packet.
8. device as claimed in claim 7, which is characterized in that the determination unit includes：
First determines subelement, for determining the first parameter identification of first virtual LAN, wherein first parameter
Be identified as the first port for receiving first message first port mark and/or first virtual LAN first
LAN ID；
Second determines subelement, for according to the corresponding relationship between preconfigured parameter identification and instance identification, determine with
Corresponding first instance identification of first parameter identification.
9. device as claimed in claim 7, which is characterized in that the execution unit includes：
Subelement is inquired, for inquiring the first mac address table corresponding with first instance identification on first routing bridge,
Determine the purpose routing bridge mark of the purpose routing bridge where the purpose terminal of first message；
Subelement is encapsulated, for being identified as the entry bridge mark of first encapsulated message with the routing bridge of first routing bridge
Know, the outlet bridge mark of first encapsulated message is identified as with the purpose routing bridge, Trill is carried out to first message
Head encapsulation, obtains first encapsulated message；
Subelement is forwarded, for forwarding first encapsulated message to the purpose routing bridge, so that the purpose routing bridge pair
First message obtained after the first encapsulated message decapsulation is sent to the purpose terminal of first message.
10. device as claimed in claim 7, which is characterized in that described device further includes：
First judging unit, for judging whether the target MAC (Media Access Control) address is unicast address；
When the target MAC (Media Access Control) address is not unicast address, the purpose routing bridge is to be pre-configured with first example
Secondary route bridge；
The forwarding subelement is specifically used for forwarding first encapsulated message to each secondary route by mode of unicast
Bridge.
11. device as claimed in claim 9, which is characterized in that described device further includes：
Second receiving unit, for receiving the second encapsulated message of third routing bridge transmission, second encapsulated message is that will locate
In the second message that the second terminal of the second virtual LAN is sent after Trill encapsulate obtained message, and described the
The second instance identification of the second example corresponding with second virtual LAN is carried in two encapsulated messages；
Second judgment unit, the routing bridge of outlet bridge mark and first routing bridge for judging second encapsulated message
It identifies whether identical；
Third judging unit, the routing bridge mark for outlet bridge mark and first routing bridge when second encapsulated message
It is sensible simultaneously, according to second instance identification, judge second example whether has been pre-configured on first routing bridge；
Decapsulation unit, it is real according to described second for when being pre-configured with second example on first routing bridge
Example mark, the purpose for being sent to second message to second message obtained after second encapsulated message decapsulation are whole
End.
12. device as claimed in claim 11, which is characterized in that described device further includes：
Second transmission unit, the routing bridge mark for outlet bridge mark and first routing bridge when second encapsulated message
It when knowing different, is identified according to the outlet bridge of second encapsulated message, forwards second encapsulated message.
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| CN106506313B (en) * | 2016-11-25 | 2019-08-23 | 武汉长光科技有限公司 | A kind of cost effective method improving route bridging data forwarding performance |
| CN106789644B (en) * | 2016-11-29 | 2020-01-07 | 深圳市楠菲微电子有限公司 | Method and device for forwarding TRILL multicast message |
| CN109104353B (en) * | 2018-09-21 | 2021-04-30 | 新华三信息安全技术有限公司 | Data transmission method and device |
| CN111371800B (en) * | 2020-03-12 | 2022-09-06 | 深圳市三旺通信股份有限公司 | Message processing method, device and readable storage medium |
| CN114024725B (en) * | 2021-10-25 | 2023-06-20 | 全球能源互联网研究院有限公司南京分公司 | Inter-container communication method, system, electronic equipment and storage medium |
| CN116033365B (en) * | 2023-03-22 | 2023-06-20 | 新华三技术有限公司 | Communication method, device, electronic equipment and storage medium |
| CN117271170B (en) * | 2023-11-23 | 2024-04-16 | 荣耀终端有限公司 | Activity event processing method and related equipment |
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| CN103916317A (en) * | 2012-12-31 | 2014-07-09 | 华为技术有限公司 | Communication method, routing bridge and network system |
| CN104486225A (en) * | 2014-12-19 | 2015-04-01 | 杭州华三通信技术有限公司 | Packet forwarding method and packet forwarding equipment applied to TRILL network |
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| WO2011113393A2 (en) * | 2011-04-27 | 2011-09-22 | 华为技术有限公司 | Virtual local area network identity transformation method and apparatus |
| CN102223303A (en) * | 2011-06-14 | 2011-10-19 | 杭州华三通信技术有限公司 | Load equilibrium method based on transparent interconnection of lots of links (TRILL) and routing bridge (RB) |
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| CN103916317A (en) * | 2012-12-31 | 2014-07-09 | 华为技术有限公司 | Communication method, routing bridge and network system |
| CN104486225A (en) * | 2014-12-19 | 2015-04-01 | 杭州华三通信技术有限公司 | Packet forwarding method and packet forwarding equipment applied to TRILL network |
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