WO2013104279A1

WO2013104279A1 - Method and device for setting cvlan in trill network

Info

Publication number: WO2013104279A1
Application number: PCT/CN2013/070097
Authority: WO
Inventors: 余立; 廖文奇; 张颜; 顾勤丰
Original assignee: 华为技术有限公司
Priority date: 2012-01-11
Filing date: 2013-01-06
Publication date: 2013-07-18
Also published as: CN102571586A; CN102571586B

Abstract

Provided are a method and device for setting a CVLAN in a TRILL network, which relate to the field of communications and can effectively avoid unnecessary multicast data replication in the TRILL network and save bandwidth. The method includes: a switch setting a CVLAN to be in a deactivated state, so that a routing bridge does not send the multicast data of the CVLAN to the switch; and if the switch determines that there is an online network device in the CVLAN set thereby, the switch setting the CVLAN to be in an activated state, so that the routing bridge sends the multicast data of the CVLAN to the switch. The present invention is applied in CVLAN setting.

Description

Method and device for setting CVLAN in TRILL network

This application claims priority to Chinese Patent Application No. 201210008654. X, entitled "Method and Apparatus for Setting CVLAN in TRILL Network" on January 11, 2012, the entire contents of which are incorporated by reference. In this application. TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a method and apparatus for setting a CVLAN in a TRILL network. BACKGROUND OF THE INVENTION Transparent Interconnect of Lots of Links (English: Transparent Interconnect of Lots of Links, abbreviated as TRILL) is a multi-hop ether based on shortest path architecture routing implemented by a device called Routing Bridge (abbreviation: RB). Network standard. TRILL combines the advantages of bridges and routers. It uses the connection state routing protocol to solve the specific application of the virtual local area network (English: Virtual Local Area Network, abbreviation: VLAN).

The TRILL network includes RBs and switches. The RB can recognize the topology of the TRILL network and can generate a TRILL routing forwarding table to other RBs. User-side VLAN (English: Customer VLAN, abbreviation: CVLAN) can be configured on the switch. When receiving the multicast data addressed to a network device in the CVLAN, the RB sends the multicast data to the corresponding destination RB according to the TRILL routing forwarding table, and then the multicast data is sent by the destination RB. The corresponding switch is given to the switch, and then the switch transmits the multicast data to the corresponding network device.

Generally, the multicast data sent to a network device in the CVLAN is sent to all the switches configured with the CVLAN, for example, when the multicast data needs to be sent to a network device under a switch configured with CVLAN 100, The multicast data is also sent to all other switches configured with CVLAN 100. As a result, other switches configuring the CVLAN unnecessarily receive the multicast data, which causes a large amount of unnecessary multicast data replication in the TRILL network. , wasting a lot of bandwidth. Summary of the invention

The embodiment of the invention provides a method for setting a CVLAN in a TRILL network, which can effectively avoid unnecessary multicast data replication in the TRILL network and save bandwidth.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

On the one hand, a method for setting a CVLAN in a TRILL network is provided, including: The switch sets the CVLAN to an inactive state, so that the RB does not send the multicast data of the CVLAN to the switch;

Determining, by the switch, whether the network device is online in the set CVLAN;

If the switch determines that a network device is online in the set CVLAN, the switch sets the CVLAN to an active state, so that the RB sends the CVLAN multicast data to the switch.

On the other hand, a method for setting a CVLAN in a TRILL network is provided, including:

RB determines the state of the CVLAN set by the switch;

If the RB determines that the CVLAN set by the switch is in an inactive state, the RB does not send the multicast data of the CVLAN to the switch;

And if the RB determines that the CVLAN set by the switch is an active state, the RB sends the multicast data of the CVLAN to the switch.

In another aspect, an apparatus for setting a CVLAN in a TRILL network is provided, where the apparatus includes:

a setting unit, configured to set the CVLAN to an inactive state, so that the RB does not send the multicast data of the CVLAN to the switch;

The setting unit is further configured to: if the determining unit determines that a network device is online in the CVLAN, set the CVLAN to be in an active state, so that the RB sends the CVLAN multicast data to the switch.

a determining unit, configured to determine a state of a CVLAN set by the switch;

a sending unit, configured to: if the determining unit determines that the CVLAN of the switch is in an inactive state, not sending the multicast data of the CVLAN to the switch;

The sending unit is further configured to: if the determining unit determines that the CVLAN of the switch is in an active state, send the multicast data of the CVLAN to the switch.

After the foregoing technical solution, the method and device for setting a CVLAN in a TRILL network provided by the embodiment of the present invention, when the CVLAN of the switch is in an inactive state, the RB does not send the group of the CVLAN to the switch. Broadcasting data, when the network device is online in the CVLAN of the switch, the switch sets the CVLAN to an active state, and the RB sends the CVLAN multicast data to the switch, so that, relative to the current Technically, the switch receives multicast data when the network device is online in the CVLAN, and does not receive multicast data when the network device is online in the CVLAN, so that the TRILL network can be effectively avoided. Unnecessary multicast data replication, saving bandwidth. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and other drawings may be obtained from those skilled in the art without departing from the drawings.

1 is a flowchart of a method for setting a CVLAN in a TRILL network according to an embodiment of the present invention;

2 is a flowchart of a method for setting a CVLAN in a TRILL network according to an embodiment of the present invention; FIG. 3 is a specific flowchart of a method for setting a CVLAN in a TRILL network according to an embodiment of the present invention; A schematic diagram of a method for setting a CVLAN in a TRILL network before a virtual machine is dynamically migrated;

FIG. 4B is a schematic diagram of a method for setting a CVLAN in a TRILL network after the network device is online, according to an embodiment of the present invention; FIG.

4C is a schematic diagram of a method for setting a CVLAN in a TRILL network after a virtual machine is dynamically migrated according to an embodiment of the present disclosure;

FIG. 5 is a structural block diagram of a switch according to an embodiment of the present invention;

5B is another structural block diagram of a switch according to an embodiment of the present invention;

FIG. 5C is still another structural block diagram of a switch according to an embodiment of the present invention;

FIG. 6 is a structural block diagram of an RB according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a specific implementation process of the present invention will be exemplified by way of examples. It is apparent that the embodiments described below are a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

For a better understanding of the invention, the relevant terms used in the present application are first described below.

Reference in the present application to "a network device in a CVLAN" refers to a network device in which the CVLAN is provided.

References in this application to "switches" refer to switches that are capable of running the TRILL protocol and interacting directly with network devices in the CVLAN. In other words, the RBs in the TRILL network that are closest to the network devices in the CVLAN. References to "RB" in this application refer to a bridge device capable of running the TRILL protocol in the TRILL network and having a route forwarding feature, and particularly refers to an RB other than a switch, that is, the RB mentioned in the present application does not. Directly with network devices in CVLAN Interaction, but through the switch to interact with network devices in the CVLAN. It should be understood that the switch and the RB are distinguished in this application for convenience of description and are not intended to be limiting. The RB may be a frame switch, and may of course be another network device capable of running the TR I LL protocol. When the multicast source in the network sends the multicast data of the CVLAN to the RB, the RB sends the multicast data of the CVLAN to the switch.

FIG. 1 is a flowchart of a method for setting a CVLAN in a TRILL network according to an embodiment of the present invention. Referring to FIG. 1, an embodiment of the present invention provides a method for setting a CVLAN in a TRILL network, where the method includes:

511. The switch sets the CVLAN to an inactive state, so that the RB does not send the multicast data of the CVLAN to the switch.

among them:

In the embodiment of the present invention, the inactive state of the CVLAN indicates a state in which the multicast data of the CVLAN is not received; and the activated state of the CVLAN indicates a state in which the multicast data of the CVLAN is received.

In this step, for example, the switch may set the CVLAN to an inactive state during initialization, so that the switch does not receive the multicast data addressed to the CVLAN in the initial state.

After the switch sets the CVLAN to the inactive state, the switch sends the inactive state indication information to the RB, where the inactive state indication information indicates that the CVLAN set on the switch is in an inactive state, so that the The RB does not send the multicast data of the CVLAN to the switch.

Specifically, after the RB learns that the CVLAN set on the switch is in an inactive state, the switch is removed from the current TRILL network in its setting, in other words, the switch is cut from the TRILL network. Branching off, so that the switch is no longer included in the current TRILL network, so that after receiving the multicast data of the CVLAN, the RB does not send the multicast data of the CVLAN to the switch. . The non-active state indication information may be included in an optional field of the message, and sent to the RB by using the message.

512. If a network device is online in the CVLAN set by the switch, the switch sets the CVLAN to an active state, so that the RB sends the CVLAN multicast data to the switch.

The network device may be a server or a terminal.

The online device refers to that the network device in the CVLAN starts to exchange data with other network devices in the CVLAN through the switch. The network device is offline, that is, the network device in the CVLAN does not perform data interaction with the switch.

The switch may determine that a network device in the CVLAN set by the switch is online:

Receiving, by the switch, a packet sent by a network device in the CVLAN that is set by the switch, where the packet is sent by the switch Included in the MAC address of the network device;

The switch determines that a network device is online in the CVLAN when the received packet includes the MAC address of the network device.

Specifically, when a network device in the CVLAN set by the switch needs to perform data interaction with another network device in the CVLAN, the at least one network device sends a packet to the switch, and the packet is sent. The source MAC address contained in it is its own MAC address. The switch receives a packet sent by at least one of the network devices in the CVLAN. If the source MAC address of the network device included in the packet is legal, the switch searches for a MAC address table. If the MAC address does not exist in the MAC address table, add the MAC address to the MAC address table, and set the CVLAN to an active state to receive the group of the CVLAN sent by the RB to the switch. Broadcasting data; if the address already exists in the MAC address table, the CVLAN is also set to an active state to receive multicast data of the CVLAN sent by the RB to the switch.

After the switch sets the CVLAN to an active state, the switch sends an activation state indication information to the RB, where the activation state indication information indicates that the CVLAN set by the switch is in an active state, so that the RB is in the active state. The switch sends the multicast data of the CVLAN. The activation state indication information may be included in an optional field of the message, and the message is sent to the RB by using the message.

Specifically, after the RB is informed that the CVLAN set on the switch is in an active state, the RB is re-introduced into the current TRILL network in the setting, so that the RB is in the group that receives the CVLAN. After the data is broadcast, the multicast data of the CVLAN is sent to the switch, and the switch receives the multicast data of the CVLAN sent by the RB, and sends the multicast data to the online device that is online. .

In the embodiment of the present invention, after the network device that joins the multicast group in the CVLAN is online, the switch will

The CVLAN is set to the active state, so that the RB sends the multicast data of the CVLAN to the switch, and then the multicast data is sent by the switch to the network device, and other switches that do not have the network device online The CVLAN set is still inactive and cannot receive the multicast data sent by the RB. Therefore, by setting the state of the CVLAN, the effect of reducing unnecessary duplicate multicast data can be achieved.

Further, in order to prevent the RB from transmitting the multicast data of the CVLAN to the switch, causing unnecessary multicast data replication in the TRILL network, the switch has the network device online setting the CVLAN to be activated in the CVLAN. After the switch does not receive the packet sent by any network device in the CVLAN set by the switch within the predetermined time period, the switch sets the state of the CVLAN from the active state to the inactive state. The RB is not sent the multicast data of the CVLAN to the switch.

Specifically, if the switch does not receive any network configuration in the CVLAN within a set aging time For the outgoing packets, the switch considers that all network devices in the CVLAN are offline. For example, all network devices leave the network or do not communicate with the network. At this time, the switch sets the state of the CVLAN from an active state to an inactive state such that the RB does not send the multicast data of the CVLAN to the switch.

In the embodiment of the present invention, the switch sets the CVLAN to an inactive state, and when the network device that joins the multicast group is online in the CVLAN set by the switch, the switch sets the CVLAN to an active state, so that The switch receives the multicast data sent by the RB to the CVLAN when the network device is online in the CVLAN, and does not receive the multicast sent by the RB to the CVLAN when the network device does not go online. The data can thus effectively avoid unnecessary multicast data replication in the TRILL network and save bandwidth. Corresponding to the foregoing method, the present invention further provides a method for setting a CVLAN in a TRILL network, where the method includes:

521, RB determines a state of a CVLAN set by the switch;

In this step, the determining, by the RB, the status of the CVLAN set by the switch may include:

The RB receives the inactive state indication information sent by the switch, and the inactive state indication information indicates that the CVLAN set by the switch is in an inactive state;

The RB determines, according to the received inactive state indication information, that the CVLAN set by the switch is in an inactive state.

Or,

The RB receives the activation state indication information sent by the switch, where the activation state indication information indicates that the CVLAN set by the switch is an active state;

The RB determines, according to the received activation state indication information, that the CVLAN set by the switch is in an active state.

522. If the RB determines that the CVLAN set by the switch is in an inactive state, the RB does not send the multicast data of the CVLAN to the switch.

Specifically, after determining that the CVLAN set by the switch is in an inactive state, the RB prune the switch from the current TRILL network in its setting, so that the switch is no longer included in the current TRILL network. In this way, the RB does not send the multicast data of the CVLAN to the switch.

523. If the RB determines that the CVLAN set by the switch is an active state, the RB sends the multicast data of the CVLAN to the switch.

Specifically, after the RB determines that the CVLAN set by the switch is in an active state, the RB will be in its setting. The switch is again added to the current TR I LL network such that the switch is again included in the current TR I LL network, such that the RB sends the CVLAN multicast data to the switch.

In the embodiment of the present invention, the switch sets the CVLAN to an inactive state, and when the network device that joins the multicast group is online in the CVLAN set by the switch, the switch sets the CVLAN to an active state, so that The switch receives multicast data when the network device is online in the set CVLAN, and does not receive multicast data when the network device is online in the set CVLAN. Therefore, the switch can effectively avoid unnecessary in the TRILL network. Multicast data replication saves bandwidth. For a better understanding of the technical solution of the method for setting the CVLAN in the TRILL network provided by the embodiment of the present invention, further detailed description will be made below through specific embodiments.

The method for setting the CVLAN in the TRILL network provided by the embodiment of the present invention can be applied to various scenarios. The following describes the dynamic migration scenario of the virtual machine in the data center by using FIG. 3, FIG. 4A, FIG. 4B, and FIG. It should be understood that the technical solution of the present invention can also be applied to other scenarios known to those skilled in the art.

As shown in FIG. 3, FIG. 4A, FIG. 4B, and FIG. 4C, the method for setting a CVLAN in a TRILL network provided by this embodiment includes:

S 31. Before the virtual machine of the data center is dynamically migrated, the box switches 1-4 set the CVLAN 100 to an inactive state, so that RB1 and RB2 do not send the multicast data of the CVLAN 100 to the box switches 1-4.

As shown in FIG. 4A, the box switch 1-4 sets the initial state of the CVLAN 100 to an inactive state, so that RB1 and RB2 do not send the multicast data of the CVLAN 100 to the box switch 1-4.

S32, the box switch 1-4 sends an inactive state indication message to RB1 and RB2. The inactive state indication information indicates that the CVLAN 100 set by each is in an inactive state, so that RB1 and RB2 do not send the multicast data of the CVLAN 100 to the box switch 1-4 according to the inactive state indication information.

S 33, RB1 and RB2 receive the inactive state indication information sent by the box switch 1-4, and determine that the CVLAN 100 set by the box switch 1-4 is in an inactive state, and does not send the CVLAN 100 to the box switch 1_4. Multicast data.

S 34. When the virtual machine of at least one network device in the CVLAN 100 set by the box switch 3 is brought online, the box switch 3 sets the CVLAN 100 to an active state.

Specifically, the box switch 3 can determine that the network device in the CVLAN 100 is online: the box switch 3 receives the packet sent by any network device in the CVLAN 100 that is set, and the packet includes the The MAC address of any network device; when the received packet includes the MAC address of the network device, it is determined that the network device is online in the CVLAN 100 set by the box switch 3. Referring to FIG. 4B, a virtual machine is disposed on the server 1 (network device). When the virtual machine on the server 1 (network device) is brought online from the box switch 3, the box switch 3 sets the CVLAN 100 to the active state, and the box switch 1. The box switch 2 and the box switch 4 are not connected to the server (network device), and they still set CVLAN 100 to be inactive.

535. The box switch 3 sends an activation status indication message to RB1 and RB2 after setting CVLAN 100 to an active state. The activation state indication information indicates that the CVLAN 100 set by the box switch 3 is in an active state, so that RB1 and RB2 send the multicast data of the CVLAN 100 to the box switch 3 according to the CVLAN 100 being activated.

536, RB1 and RB2 know that the box switch 3 sets the CVLAN 100 to the active state, and then sends the multicast data of the CVLAN 100 to the box switch 3.

At this time, since the CVLAN 100 set by the box switch 1, the box switch 2, and the box switch 4 is inactive, RB1 and RB2 do not send the multicast data of the CVLAN 100 to them.

537. The box switch 3 receives the multicast data of the CVLAN 100 sent by the RB1 and the RB2, and sends the multicast data of the CVLAN 100 to the network device that is online.

538. When the virtual machine on the network device is dynamically migrated from the box switch 3 to the slave box switch 1, the box switch 1 sets the CVLAN 100 to an active state, and the box switch 3 sets the CVLAN 100 to a non- Active state.

As shown in FIG. 4C, when the virtual machine of the server 1 (network device) goes offline from the box switch 3, the slave box switch

When 1 goes online, the box switch 1 sets the CVLAN 100 from the inactive state to the active state, and the box switch 3 sets the CVLAN 100 from the active state to the inactive state.

In this way, only the box switch 1 can receive the multicast data of the CVLAN 100, and the other box switches including the box switch 3 do not receive the multicast data of the CVLAN 100, thereby eliminating unnecessary in the TRILL network. Repeat multicast data to save bandwidth.

Specifically, the box switch 1 can sense that the network device is online through the MAC address in the packet, and accordingly, the CVLAN 100 is switched from the inactive state to the active state to receive the multicast data of the CVLAN 100; and if the box switch If the packet of the network device in the CVLAN 100 is not received within the predetermined time period, the CVLAN 100 may be re-switched from the active state to the inactive state according to the aging mechanism described above to not receive the multicast data of the CVLAN 100. .

The method for setting a CVLAN in a TRILL network provided by this embodiment, when the CVLAN of the switch is in an inactive state, the RB does not send the CVLAN multicast data to the switch, and the CVLAN of the switch When the network device is online, the switch sets the CVLAN to an active state, and the RB sends the CVLAN multicast data to the switch, so that the switch is compared to the prior art. The CVLAN receives the multicast data of the CVLAN when the network device is online, and does not receive the multicast data of the CVLAN when the network device is online, so that the TRILL network can be effectively avoided. The necessary copying of multicast data, Save bandwidth. Corresponding to the method for setting a CVLAN in the TRILL network, the embodiment of the present invention further provides an apparatus for setting a CVLAN in a TRILL network, where the device is implemented by a switch, where the switch includes a switch chip, a line card, and a backplane. As shown in FIG. 5A, the device for setting a CVLAN in the TRILL network includes:

The setting unit 51 is configured to set the CVLAN to be inactive, so that the RB does not send the multicast data of the CVLAN to the device, and the determining unit 52 is configured to determine whether a network device is online in the CVLAN set by the device.

The setting unit 51 is further configured to: if the device determines that a network device is online in the CVLAN set by the device, setting the CVLAN to an active state, so that the RB sends the multicast data of the CVLAN to the device.

In the embodiment of the present invention, the switch sets the CVLAN to an inactive state, and when the network device that joins the multicast group is online in the CVLAN set by the switch, the switch sets the CVLAN to an active state, and the other The CVLAN of the switch is still inactive. In this way, the switch receives multicast data when the network device is online in the set CVLAN, and does not receive multicast data when the network device is online. Therefore, unnecessary multicast data replication in the TRILL network can be effectively avoided, and bandwidth is saved.

Further, as shown in FIG. 5B, the device further includes a determining unit 52, which is specifically configured to:

Receiving a packet sent by the network device in the CVLAN, where the packet includes a MAC address of the network device;

When the received packet includes the MAC address of the network device, it is determined that the network device is online in the CVLAN.

Optionally, in an embodiment of the present invention, as shown in FIG. 5C, the device further includes:

The sending unit 53 is configured to send the inactive state indication information to the RB after the setting unit 51 sets the CVLAN to the inactive state, where the inactive state indication information indicates that the CVLAN set by the setting unit 51 is inactive. And the RB does not send the multicast data of the CVLAN to the device according to the inactive state of the CVLAN.

Further, the sending unit 53 is further configured to: after the setting unit 51 sets the CVLAN to an active state, send the activation state indication information to the RB, where the activation state indication information indicates that the CVLAN is an active state, And causing the RB to send the multicast data of the CVLAN to the apparatus according to an activated state of the CVLAN. Correspondingly, the embodiment of the present invention further provides an apparatus for setting a CVLAN in a TRILL network, where the apparatus is implemented by an RB, where the RB includes a switch chip, a line card, and a backplane. As shown in FIG. 6, the apparatus for setting a CVLAN in the TRILL network includes: a determining unit 61, configured to determine a state of a CVLAN set by the switch;

The sending unit 62 is configured to: if the determining unit determines that the CVLAN set by the switch is in an inactive state, not sending the multicast data of the CVLAN to the switch;

The sending unit 62 is further configured to: if the determining unit 61 determines that the CVLAN set by the switch is an active state, send the multicast data of the CVLAN to the switch.

In the embodiment of the present invention, when the CVLAN set by the switch is in an inactive state, the RB does not send the multicast data of the CVLAN to the switch, and when the CVLAN set by the switch is in an active state, sends the CVLAN to the switch. The multicast data of the CVLAN, so that the switch receives the multicast data when the network device is online in the set CVLAN, and does not receive the multicast data when the network device is online in the set CVLAN. It can effectively avoid unnecessary multicast data replication in the TRILL network and save bandwidth.

Optionally, the determining unit 61 is specifically configured to:

Receiving the inactive state indication information sent by the switch, where the inactive state indication information indicates that the CVLAN set by the switch is in an inactive state;

Determining, according to the received inactive state indication information, that the CVLAN set by the switch is in an inactive state. Further, the determining unit 61 is specifically configured to:

Receiving the activation state indication information sent by the switch, where the activation state indication information indicates that the CVLAN of the switch is an active state;

And determining, according to the received activation state indication information, that the CVLAN set by the switch is an active state.

It should be noted that, in the foregoing device embodiments, the included units are only divided according to functional logic, but are not limited to the foregoing division, as long as the corresponding functions can be implemented; The names are also for convenience of distinction from each other and are not intended to limit the scope of protection of the present invention.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing storage device includes the following steps: The foregoing storage medium includes: a read-only memory, a random access memory, a magnetic disk, or an optical disk, and the like, which can store program codes.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

Rights request

A method for setting a user-side virtual local area network in a multi-link transparent internet, comprising: setting a user-side virtual local area network to an inactive state, so that the routing bridge does not send the user side to the switch Multicast data of a virtual local area network;

If the switch determines that the network device is online in the user-side virtual local area network set by the switch, the switch sets the user-side virtual local area network to an active state, so that the routing bridge sends the user side to the switch Multicast data for virtual local area networks.

The method according to claim 1, wherein after the switch sets the user-side virtual local area network set by the switch to be in an inactive state, the method further includes:

The switch sends the inactive state indication information to the routing bridge, where the inactive state indication information indicates that the user-side virtual local area network set by the switch is in an inactive state, so that the routing bridge does not The switch sends multicast data of the user-side virtual local area network.

The method according to claim 1 or 2, wherein, after the switch sets the user-side virtual local area network to an active state, the method further includes:

The switch sends the activation state indication information to the routing bridge, where the activation state indication information indicates that the user-side virtual local area network set by the switch is in an active state, so that the routing bridge sends the user to the switch. Multicast data of the side virtual local area network.

The method according to claim 3, wherein if the switch does not receive a packet sent by any network device in the CVLAN set by the switch within a predetermined period of time, the switch will The state of the CVLAN is set from the active state to the inactive state such that the RB does not send the multicast data of the CVLAN to the switch.

The method according to any one of claims 1 to 4, wherein the switch determines that a network device in the CVLAN set by the switch is online:

Receiving, by the switch, a packet sent by a network device in a user-side virtual local area network set by the switch, where the packet includes a media access control address of the network device;

When the received message includes the medium access control address of the network device, the switch determines that the network device is online in the user-side virtual local area network set by the switch.

A method for setting a user-side virtual local area network in a multi-link transparent internet, the method comprising: the routing bridge determining a state of a user-side virtual local area network set by the switch; If the routing bridge determines that the user-side virtual local area network set by the switch is in an inactive state, the routing bridge does not send the multicast data of the user-side virtual local area network to the switch;

And if the routing bridge determines that the user-side virtual local area network set by the switch is in an active state, the routing bridge sends the multicast data of the user-side virtual local area network to the switch.

7. The method of claim 6 wherein:

The routing bridge determines the state of the user-side virtual local area network set by the switch, including:

The routing bridge receives the activation state indication information sent by the switch, and the activation state indication information indicates that the user-side virtual local area network set by the switch is an active state;

The routing bridge determines, according to the received activation state indication information, that the user-side virtual local area network set by the switch is in an active state.

8. The method of claim 6 wherein:

The routing bridge receives the inactive state indication information sent by the switch, and the inactive state indication information indicates that the user-side virtual local area network set by the switch is in an inactive state;

The routing bridge determines, according to the received inactive state indication information, that the user-side virtual local area network set by the switch is in an inactive state.

A device for setting a CVLAN in a TRILL network, the device comprising:

a setting unit, configured to set the user-side virtual local area network to an inactive state, so that the routing bridge does not send the multicast data of the user-side virtual local area network to the device;

The setting unit is further configured to: if the device determines that the network device is online in the user-side virtual local area network set by the device, setting the user-side virtual local area network set by the device to be in an active state, so that the routing bridge is The device sends multicast data of the user side virtual local area network.

The device according to claim 9, wherein the device further comprises:

a sending unit, configured to send an activation state indication information to the routing bridge after the setting unit sets the user-side virtual local area network to an active state, where the activation state indication information indicates a user-side virtual local area network set by the device And being activated, so that the routing bridge sends the multicast data of the user-side virtual local area network to the device.

The device according to claim 10, wherein the sending unit is further configured to: after the setting unit sets the user-side virtual local area network to an inactive state, send the inactive to the routing bridge. State letter The inactive state indication information indicates that the user-side virtual local area network set by the device is in an inactive state, so that the routing bridge does not send the multicast data of the user-side virtual local area network to the device.

The device according to any one of claims 9 to 11, wherein the device further comprises a determining unit, and the determining unit is specifically configured to:

And receiving, by the setting unit, a packet sent by a network device in a user-side virtual local area network, where the packet includes a media access control address of the network device;

And determining, according to the medium access control address included in the received message, that the network device is online in the user-side virtual local area network set by the setting unit.

13. A device for setting a CVLAN in a TRILL network, the device comprising:

a determining unit, configured to determine a state of a user-side virtual local area network set by the switch;

a sending unit, configured to: if the determining unit determines that the user-side virtual local area network set by the switch is in an inactive state, not sending the multicast data of the user-side virtual local area network to the switch;

And a sending unit, configured to: if the determining unit determines that the user-side virtual local area network set by the switch is in an active state, send the multicast data of the user-side virtual local area network to the switch.

14. Apparatus according to claim 13 wherein:

The determining unit is specifically configured to:

Receiving the inactive state indication information sent by the switch, where the inactive state indication information indicates that the user-side virtual local area network set by the switch is in an inactive state;

And determining, according to the received inactive state indication information, that the user-side virtual local area network set by the switch is in an inactive state.

15. Apparatus according to claim 13 or claim 14 wherein:

The determining unit is specifically configured to:

Receiving the activation state indication information sent by the switch, where the activation state indication information indicates that the user-side virtual local area network set by the switch is in an active state;

And determining, according to the received activation state indication information, that the user-side virtual local area network set by the switch is in an active state.