WO2016050096A1

WO2016050096A1 - Method for forwarding message in trill network and route bridge

Info

Publication number: WO2016050096A1
Application number: PCT/CN2015/081675
Authority: WO
Inventors: 张元元
Original assignee: 华为技术有限公司
Priority date: 2014-09-29
Filing date: 2015-06-17
Publication date: 2016-04-07
Also published as: CN105530189A; CN105530189B

Abstract

Provided are a method for forwarding a message in a TRILL network and a route bridge. The method comprises: when a first route bridge discovers that a table entry comprising a destination MAC address is not stored in a MAC address table and a first data message cannot be forwarded in a unicast manner, actively sending a MAC address request message taking the destination MAC address of the first data message as a target MAC address, and quickly acquiring information about a second route bridge corresponding to the destination MAC address of the first data message, so that the first route bridge can send a second data message which is subsequently received and comprises the destination MAC address in a TRILL unicast manner according to the information about the second route bridge, thereby effectively reducing the TRILL multicast traffic in the TRILL network, saving a multicast bandwidth of the TRILL network and improving the utilization rate of bandwidth.

Description

Method and routing bridge for forwarding messages in a TRILL network

This application claims priority to Chinese Patent Application No. 201410513418.2, filed on Sep. 29, 2014, entitled "Method and Routing Bridge for Forwarding Messages in the TRILL Network", the entire contents of which are incorporated by reference. In this application.

Technical field

The present invention relates to communication network technologies, and in particular, to a method and a routing bridge for forwarding messages in a TRILL network.

Background technique

The Transparent Interconnection of Lots of Links (TRILL) is a Layer 2 network standard recommended by the Internet Engineering Task Force (IEIF). The device running the TRILL protocol is called A routing bridge (English: Route Bridge, RB for short), a network composed of RBs is called a TRILL network.

The forwarding in the TRILL network is essentially Layer 2 forwarding. You need to find the Media Access Control Address (MAC) address table. If the ingress RB receives the packet, the ingress RB can be unicast and forwarded on the TRILL network if it can find the MAC address corresponding to the egress RB in the packet. If the MAC address corresponding to the Egress RB in the packet is not found in the MAC address table stored in the RB (the MAC address is aged or deleted, or the sending and receiving paths of the packet are inconsistent and the MAC address cannot be learned), The ingress RB sends the packet in the TRILL network in the multicast mode. The scheme of forwarding the unicast packet through the multicast mode wastes the bandwidth of the multicast traffic of the TRILL network and reduces the bandwidth utilization of the TRILL network.

Summary of the invention

The present invention provides a method and a routing bridge for forwarding a message in a TRILL network, which overcomes the problem of wasting the bandwidth of the multicast traffic of the TRILL network and reducing the bandwidth utilization of the TRILL network.

A first aspect of the present invention provides a method for forwarding a message in a multi-link transparent interconnect TRILL network, including:

Receiving, by the first RB, a first data packet, where the first data packet includes a destination media access control MAC address;

If the first RB bridge does not find the entry including the destination MAC address in the MAC address table, the first RBridge sends the MAC address to other RBridges in the TRILL network by using the TRILL multicast mode. An address request message, where the payload of the MAC address request message carries the destination MAC address of the first data packet;

Receiving, by the first routing bridge, a MAC address response message sent by the second routing bridge, where the MAC address response message carries the information of the second routing bridge;

The first routing bridge sends the subsequently received second data packet including the destination MAC address to the second routing bridge in the TRILL unicast mode according to the information of the second routing bridge.

In a first possible implementation manner of the first aspect, before the sending, by the first RB, the MAC address request packet to the other RBs in the TRILL network, the method further includes:

Determining whether the destination MAC address of the first data packet is a unicast MAC address,

When the destination MAC address of the first data packet is a unicast address, the first routing bridge determines whether the forwarding manner of the first data packet is a TRILL multicast mode.

When the first data packet is forwarded in the TRILL multicast mode, the first data packet is determined to be a unicast packet whose MAC address search fails.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the first RBridge is unicast by TRILL according to the information of the second RBridge And sending, by the second routing bridge, the subsequently received second data packet that includes the destination MAC address, including:

Obtaining, by the first routing bridge, information about the second routing bridge carried in the MAC address response message;

Adding, by the first routing bridge, an entry including a correspondence between the destination MAC address and the information of the second RBridge in the MAC address table;

And the first routing bridge sends, according to the entry, the second received data packet including the destination MAC address to the second routing bridge in a TRILL unicast mode.

With reference to the first aspect, the first or the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the inner layer destination media access of the MAC address request message The control DMAC address is a customized multicast MAC address, and the inner layer source media access control SMAC address is the MAC address of the first RBridge, and the target MAC address in the load of the MAC address request packet is the first The destination MAC address of the data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs.

The customized multicast MAC address is used to indicate that the packet whose destination MAC address is the customized multicast MAC address is a unicast packet whose MAC address search fails.

In conjunction with the third possible implementation of the first aspect, in a fourth possible implementation manner of the first aspect, the inner layer destination media access control DMAC address of the MAC address response packet is the first RBridge of The MAC address, the inner source media access control SMAC address is the destination MAC address of the first data packet, the virtual local area network VLAN is the VLAN to which the destination MAC address of the first data packet belongs, and the nickname of the egress routing bridge is The nickname of the first RBridge, the nickname of the ingress RBridge is the nickname of the second RBridge.

A second aspect of the present invention provides a method for forwarding a message in a multi-link transparent interconnect TRILL network, including:

The second routing bridge receives the media access control MAC address request packet sent by the first routing bridge in the TRILL multicast mode, where the load of the MAC address request packet includes the target MAC address;

If the MAC address of the second RBridge is the target MAC address, the second RB bridge sends a MAC address response message to the first RB through the TRILL unicast mode, where the MAC address response message is sent. Carrying the information of the second RBridge, so that the first RB bridge sends the subsequently received PDCCH including the target MAC to the second RB through TRILL unicast mode according to the information of the second RBridge. The second data message of the address.

In a first possible implementation manner of the second aspect, the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control SMAC address is the first a MAC address of the RB, the destination MAC address in the payload of the MAC address request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs, the first datagram The text and the second data message include the same destination MAC address.

With reference to the first possible implementation of the second aspect, in a second possible implementation manner of the second aspect, the inner layer destination medium access control DMAC address of the MAC address response message is the first RBridge MAC address, the inner source media access control SMAC address is the target MAC address, the virtual local area network VLAN is the VLAN to which the target MAC address belongs, and the nickname of the egress RB in the TRILL unicast header is the first RBridge Nickname, the nickname of the ingress RBridge is the nickname of the second RBridge.

A third aspect of the present invention provides a routing bridge, including:

a first receiving module, configured to receive a first data packet, where the first data packet includes a destination media access control MAC address;

The first sending module is configured to search the MAC address table, and if the entry including the destination MAC address is not found in the MAC address table, send the MAC address to other routing bridges in the TRILL network by using the TRILL multicast mode. a request packet, where the payload of the MAC address request packet carries the destination MAC address of the first data packet;

a second receiving module, configured to receive a MAC address response message sent by another RB, the MAC address The response message carries the information of the another RBridge;

a second sending module, configured to send, according to the information about the another RB bridge received by the second receiving module, the subsequently received destination MAC address by using the TRILL unicast mode to the another RBridge Second data message.

In a first possible implementation manner of the third aspect, the method further includes: a determining module, configured to send, by the first sending module, a MAC address request packet to other routing bridges in the TRILL network by using a TRILL multicast mode Before determining whether the destination MAC address of the first data packet is a unicast MAC address, and determining the first data packet when the destination MAC address of the first data packet is a unicast address The forwarding mode is the TRILL multicast mode. When the forwarding mode of the first data packet is the TRILL multicast mode, the first data packet is determined to be a unicast packet with the MAC address search failure.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the RBridge further includes:

An acquiring unit, configured to acquire information about the another RB bridge carried in the MAC address response packet; and

An adding unit, configured to add, in the MAC address table, an entry that includes a correspondence between the destination MAC address and the information of the another RBridge;

The second sending module is configured to send a subsequently received second data packet including the destination MAC address to the another RB through the TRILL unicast mode according to the entry.

In conjunction with the third aspect, the first or the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the inner layer destination media access of the MAC address request message Controlling the DMAC address as a custom multicast MAC address, the inner layer source media access control SMAC address being the MAC address of the RBridge, and the destination MAC address in the load of the MAC address request message being the first datagram The destination MAC address of the text, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the inner layer destination medium access control DMAC address of the MAC address response message is the MAC of the RBridge The address, the inner layer source media access control SMAC address is the destination MAC address of the first data packet, the virtual local area network VLAN is the VLAN to which the destination MAC address of the first data packet belongs, and the nickname of the egress routing bridge is the The nickname of the routing bridge, the nickname of the ingress routing bridge is the nickname of the other routing bridge.

A fourth aspect of the present invention provides a routing bridge, including:

a receiving module, configured to receive a media access control MAC address request message sent by another RB through the TRILL multicast mode, where the load of the MAC address request message includes a target MAC address;

a sending module, configured to send a MAC address response message to the another RB through the TRILL unicast mode, where the MAC address of the RB is a destination MAC address, where the MAC address response message carries the message Decoding the information of the bridge, so that the another RB bridge sends the subsequently received second data packet including the target MAC address to the RB through TRILL unicast mode according to the information of the RBridge.

In a first possible implementation manner of the fourth aspect, the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control SMAC address is the other one. a MAC address of the RB, the destination MAC address in the payload of the MAC address request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs, the first datagram The text and the second data message include the same destination MAC address.

In conjunction with the first possible implementation of the fourth aspect, in a second possible implementation manner of the fourth aspect, the inner layer destination medium access control DMAC address of the MAC address response message is the another RBridge MAC address, the inner source media access control SMAC address is the target MAC address, the virtual local area network VLAN is the VLAN to which the target MAC address belongs, and the nickname of the egress routing bridge in the TRILL unicast header is the another RBridge Nickname, the nickname of the ingress RBridge is the nickname of the RBridge.

In the present invention, the first routing bridge receives the first data packet including the destination media access control MAC address, and if the first routing bridge does not find the entry including the destination MAC address in the MAC address table, The TRILL multicast mode sends a MAC address request packet carrying the destination MAC address of the first data packet to the other RBs in the TRILL network, and receives the second RB bridge that is sent by the second RBridge. The MAC address response message of the information is sent to the second RB through the TRILL unicast mode to send the subsequently received second data packet including the destination MAC address according to the information of the second RBridge. The first routing bridge does not store the entry including the destination MAC address in the discovery MAC address table, and does not unicast the first data packet, and actively sends the destination MAC address of the first data packet. The address is used as the MAC address request packet of the target MAC address, and the information of the second RBridge corresponding to the destination MAC address of the first data packet is quickly obtained, so that the first RB bridge can be according to the second RBridge The information is sent in the TRILL unicast mode to the second received data packet including the destination MAC address, which effectively reduces the TRILL multicast traffic in the TRILL network, saves the multicast bandwidth of the TRILL network, and increases the bandwidth utilization. rate.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

FIG. 1 is a schematic flowchart of a method for forwarding a message in a TRILL network according to an embodiment of the present disclosure;

FIG. 2 is a schematic flowchart of a method for forwarding a packet in another TRILL network according to an embodiment of the present disclosure;

3 is a schematic structural diagram 1 of a routing bridge according to an embodiment of the present invention;

4 is a schematic structural diagram 2 of a routing bridge according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram 3 of a routing bridge according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another RBridge according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of still another RBridge according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of still another routing bridge according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. 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.

FIG. 1 is a schematic flowchart of a method for forwarding a packet in a TRILL network according to an embodiment of the present disclosure. As shown in FIG. 1 , the method in this embodiment may include:

Step 101: The first RBridge receives the first data packet, where the first data packet includes a destination media access control MAC address.

Step 102: If the first RB bridge does not find the entry including the destination MAC address in the MAC address table, the first RBridge passes the TRILL multicast mode to other RBridges in the TRILL network. Sending a MAC address request message, where the payload of the MAC address request message carries the destination MAC address of the first data packet.

Specifically, if the MAC address table maintained by the first RBridge itself does not store the entry including the destination MAC address included in the received first data packet, the first RBridge performs the following operations:

A. The first data packet is sent to other routing bridges in the TRILL network by using a multicast mode;

B. Sends a MAC address request packet to other RBs in the TRILL network through the TRILL multicast mode.

The sending the first data packet to the other RBs in the TRILL network by using the multicast mode can avoid the service interruption problem caused by the delay sending the first data packet. And sending, by using the TRILL multicast mode, a MAC address request packet to the other RBs in the TRILL network, and acquiring the RB corresponding to the destination MAC address, so that the first RB learns to include the MAC address. The entry, and the TRILL unicast forwards the subsequently received second data packet including the MAC address.

Optionally, the load of the MAC address request packet carries the destination MAC address included in the first data packet received by the first RBridge. Each entry of the MAC address table includes at least a correspondence between a MAC address and an identifier of the source. The source may be a port or other RBridge, and the entry may also include other information. As shown in Table 1, it is a schematic diagram of a MAC address table.

Table 1 MAC address table

MAC地址MAC address	来源source
MAC地址MAC address	来源source	MAC1MAC1	Port：1Port: 1
MAC2MAC2	RB：2RB: 2	MAC1MAC1	Port：1Port: 1
MAC2MAC2	RB：2RB: 2	MAC3MAC3	RB：3RB: 3
……......	……......	MAC3MAC3	RB：3RB: 3

Optionally, after the first RB receives the first data packet including the destination media access control MAC address, if the first RB is found in the MAC address table, the table includes the destination MAC address. And the first routing bridge directly forwards the first data packet according to the information in the MAC address table.

Optionally, after the first RB receives the first data packet including the destination MAC address, and sends the MAC address request packet to the other RBs in the TRILL network by using the TRILL multicast mode, the first The routing bridge determines whether the received packet is a unicast packet with a MAC address search failure. The specific process is: first, the first RB bridge determines whether the destination MAC address of the received first data packet is a unicast MAC address, and then The first RB also needs to determine whether the forwarding manner of the first data packet is TRILL multicast forwarding, if the destination MAC address of the received first data packet is a unicast MAC address, and the If the forwarding mode of a data packet is TRILL multicast mode, the first data packet received is a unicast packet with a MAC address search failure. Only the first data packet is a unicast packet with a MAC address search failure, and the first RBridge sends a MAC address request packet to other RBridges in the TRILL network through the TRILL multicast mode.

In a specific implementation manner, after the first RB receives the unicast packet with the configured MAC address search failure within the set time, the first RB bridge passes the TRILL multicast mode to the TRILL network. Other routes The bridge sends a MAC address request message.

When the first routing bridge determines that the MAC address table maintained by itself does not store the entry including the destination MAC address included in the received first data packet, and the received first data packet fails to be searched for the MAC address. After the unicast packet, the first RBridge sends a MAC address request packet to the other RBs in the TRILL network through the TRILL multicast mode. The MAC address request packet of the other RBridge is used to make the MAC address The routing bridge of the destination MAC address sends a MAC address response message to the first routing bridge, so that the first routing bridge can send the information of the routing bridge of the MAC address response message and the destination MAC address. The relationship is added to the MAC address table maintained by the user. After receiving the second data packet of the same destination MAC address, the MAC address table can be directly searched and TRILL unicast forwarding is performed.

The MAC address request packet is a TRILL-encapsulated packet, and the inner-layer destination media access control DMAC address of the MAC address request packet is a customized multicast MAC address, and the inner-layer source media access control SMAC address is The MAC address of the first RBridge, the destination MAC address in the payload of the MAC address request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs.

The customized multicast MAC address is used to indicate that the packet whose destination MAC address is the customized multicast MAC address is a unicast packet whose MAC address search fails. And the customized multicast MAC address is further used to enable the second RB that receives the MAC address request packet and the MAC address is the target MAC address to return a MAC address response report to the first RBridge. Text.

Further, the MAC address table is used to store a correspondence between the MAC address and the information of the RBridge. Specifically, the information of the RBridge may be an alias of the RBridge.

Step 103: The first routing bridge receives a MAC address response message sent by the second routing bridge, where the MAC address response message carries the information of the second routing bridge.

Optionally, after the other routing bridges in the TRILL network receive the MAC address request packet of the first routing bridge multicast forwarding, determine whether the destination MAC address in the MAC address request packet is its own MAC address, if The second RB in the TRILL network determines that its MAC address is the destination MAC address in the MAC address request packet, and the second RBridge generates a MAC address response packet and sends the generated MAC address response packet. The first RB is configured to enable the first RB to forward the second data packet whose destination MAC address is the MAC address of the second RB to the second RB according to the information carried in the MAC address response packet.

The MAC address response message generated by the second routing bridge is a TRILL encapsulated packet, and the inner layer destination media access control DMAC address is the MAC address of the first RBridge, and the inner layer source media access control SMAC address. a destination MAC address of the first data packet, that is, a destination MAC address in the MAC address request packet, that is, a MAC address of the second RBridge, and the virtual local area network VLAN is the first datagram. The destination MAC address belongs to the VLAN, the nickname of the egress RBridge is the nickname of the first RBridge, and the nickname of the ingress RBridge is the nickname of the second RBridge.

Step 104: The first RB bridge sends the subsequently received second data packet including the destination MAC address to the second RB through the TRILL unicast mode according to the information of the second RBridge.

Optionally, after receiving the MAC address response message sent by the second routing bridge, the first RB obtains the information of the second RB bridge carried in the MAC address response message, and then the first The routing bridge adds a correspondence between the MAC address table and the information including the destination MAC address and the second RBridge to the MAC address table, and according to the MAC address table (specifically, according to the added In the TRILL unicast mode, the second received data packet including the destination MAC address is sent to the second routing bridge. FIG. 2 is a flowchart of another TRILL network communication method according to an embodiment of the present invention. As shown in FIG. 2, the method in this embodiment may include:

Step 201: The second routing bridge receives the media access control MAC address request packet sent by the first RB through the TRILL multicast mode, where the load of the MAC address request packet includes a target MAC address, and the MAC address request packet The purpose of the media access control DMAC address is a custom multicast MAC address.

The second routing bridge receives the packets of different types of TRILL encapsulation in the process of communication. After receiving the packet sent by the first RBridge, the second RB needs to first determine the type of the received packet, that is, You need to determine whether the received packet is a MAC address request packet.

The method for determining whether the received packet is a MAC address request packet is:

Determining whether the packet is a TRILL multicast packet,

If the packet is a TRILL multicast packet, determine whether the inner layer DMAC of the packet is a customized multicast MAC address.

If the inner layer DMAC of the packet is a customized multicast MAC address, it is determined that the received packet is a MAC address request packet.

The inner layer destination media access control DMAC address of the TRILL multicast packet is a customized multicast MAC address, and the inner layer source media access control SMAC address is the MAC address of the first RBridge, and the MAC address request packet is The destination MAC address in the load is the destination MAC address of the first data packet received by the first RB, and the virtual LAN VLAN is the VLAN to which the target MAC address belongs.

Step 202: If the MAC address of the second RBridge is the target MAC address, the second RBridge Sending a MAC address response message to the first RB through the TRILL unicast mode, where the MAC address response message carries information of the second RBridge, so that the first RB bridge is according to the second RBridge The second received data message including the target MAC address is sent to the second RB through the TRILL unicast mode.

The MAC address in the second RB bridge is the target MAC address, specifically: the MAC address table of the second RBridge includes the target MAC address, and the target MAC address is from the Learned on the port of the second routing bridge itself.

Optionally, the information of the second routing bridge includes a nickname nickname of the second routing bridge.

Optionally, the MAC address response message is a TRILL encapsulated message, and the inner layer destination media access control DMAC address of the MAC address response message is a MAC address of the first RBridge, and the inner layer source media access Controlling the SMAC address as the target MAC address (ie, the MAC address of the second RBridge, that is, the MAC address of the first data packet received by the first RBridge), and the virtual local area network VLAN is the target MAC address. The nickname of the egress RB in the TRILL unicast header is the nickname of the first RBridge, and the nickname of the ingress RBridge is the nickname of the second RBridge.

In the above embodiment of the present invention, the first routing bridge receives the first data packet including the destination media access control MAC address, and if the first RB is not found in the MAC address table, the entry including the destination MAC address is not found. Transmitting, by the TRILL multicast mode, a MAC address request message carrying the destination MAC address of the first data packet to the other RBs in the TRILL network, and receiving the second RBridge carrying the second RB The MAC address response message of the information of the RB bridge is sent to the second RB through the TRILL unicast mode to send the subsequently received second data packet including the destination MAC address according to the information of the second RBridge. The first routing bridge does not store the entry including the destination MAC address in the discovery MAC address table, and does not unicast the first data packet, and actively sends the destination MAC address of the first data packet. The address is used as the MAC address request packet of the target MAC address, and the information of the second RBridge corresponding to the destination MAC address of the first data packet is quickly obtained, so that the first RB bridge can be according to the second RBridge The information is sent in the TRILL unicast mode to the second received data packet including the destination MAC address, which effectively reduces the TRILL multicast traffic in the TRILL network, saves the multicast bandwidth of the TRILL network, and increases the bandwidth utilization. rate.

FIG. 3 is a schematic structural diagram 1 of a RBridge according to an embodiment of the present invention. The RBridge 300 includes:

The first receiving module 301 is configured to receive a first data packet, where the first data packet includes a destination media access control MAC address.

The first sending module 302 is configured to look up a MAC address table, if not found in the MAC address table The destination MAC address entry sends a MAC address request packet to the other RBs in the TRILL network by using the TRILL multicast mode, where the load of the MAC address request packet carries the first data packet. Destination MAC address;

The second receiving module 303 is configured to receive a MAC address response message sent by another routing bridge, where the MAC address response message carries the information of the another routing bridge;

The second sending module 304 is configured to send the subsequently received destination MAC address to the another RB through the TRILL unicast mode according to the information about the another RBridge received by the second receiving module 303. The second data message of the address.

Further, as shown in FIG. 4, the RBridge 300 further includes: a determining module 305, configured to send, by the first sending module 302, a MAC address request report to other RBridges in the TRILL network by using a TRILL multicast mode. Before determining whether the destination MAC address of the first data packet is a unicast MAC address, and determining the first data packet when the destination MAC address of the first data packet is a unicast address If the forwarding mode of the first data packet is the TRILL multicast mode, the first data packet is determined to be a unicast packet with the MAC address search failure.

Further, as shown in FIG. 5, the RBridge 300 further includes:

The obtaining module 306 is configured to obtain information about the another RB bridge carried in the MAC address response packet; and

An adding module 307, configured to add, in the MAC address table, an entry that includes a correspondence between the destination MAC address and the information of the another RBridge;

The second sending module 304 is specifically configured to send a subsequently received second data packet including the destination MAC address to the another RB through the TRILL unicast mode according to the entry.

Optionally, the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control SMAC address is a MAC address of the RBridge, and the MAC address is The destination MAC address in the payload of the request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs.

Optionally, the inner layer destination media access control DMAC address of the MAC address response message is a MAC address of the RB, and the inner source media access control SMAC address is a destination MAC address of the first data packet. The virtual local area network VLAN is the VLAN to which the destination MAC address of the first data packet belongs, and the egress route The nickname of the bridge is the nickname of the routing bridge, and the nickname of the ingress routing bridge is the nickname of the other routing bridge.

The RB of the present embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 1. The implementation principle and technical effects are similar, and details are not described herein again.

FIG. 6 is a schematic structural diagram of another RBridge according to an embodiment of the present invention. The RBridge 400 includes:

The receiving module 401 is configured to receive a media access control MAC address request message sent by another RB through the TRILL multicast mode, where the load of the MAC address request message includes a target MAC address;

The sending module 402 is configured to: when the MAC address of the RB bridge is the target MAC address, send a MAC address response message to the another RB through the TRILL unicast mode, where the MAC address response message is carried. And the routing bridge information, so that the another RB bridge sends the subsequently received second data packet including the target MAC address to the RB through TRILL unicast mode according to the information of the RBridge.

Optionally, the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control SMAC address is the MAC address of the another RBridge, and the MAC address is The destination MAC address in the load of the request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs, and the first data packet and the second data packet include The same destination MAC address.

Optionally, the inner layer destination media access control DMAC address of the MAC address response message is a MAC address of the another RBridge, and the inner layer source media access control SMAC address is the target MAC address, and the virtual local area network VLAN is The nickname of the egress RB in the TRILL unicast header is the nickname of the other RBridge, and the nickname of the ingress RB is the nickname of the RBridge.

The RB of the present embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 7 is a schematic structural diagram of still another RBridge according to an embodiment of the present invention. The RBridge 500 includes:

The receiver 501 is configured to receive a first data packet, where the first data packet includes a destination media access control MAC address.

The processor 502 is configured to look up a MAC address table.

The sender 503 is configured to send a MAC address request to other routing bridges in the TRILL network by using the TRILL multicast mode if the processor 502 does not find an entry including the destination MAC address in the MAC address table. a packet, where the payload of the MAC address request packet carries the destination MAC address of the first data packet address.

The receiver 501 is further configured to receive a MAC address response message sent by another RB, where the MAC address response message carries the information of the another RBridge;

The transmitter 503 is further configured to send, according to the received information of the another RBridge, a subsequently received second PDCCH including the destination MAC address to the another RB through TRILL unicast mode. Data message.

Optionally, the processor 502 is further configured to determine the first data packet before the sender 503 sends a MAC address request message to other routing bridges in the TRILL network by using the TRILL multicast mode. Whether the destination MAC address is a unicast MAC address, and when the destination MAC address of the first data packet is a unicast address, it is further used to determine whether the forwarding manner of the first data packet is TRILL multicast. In a manner, when the first data packet is forwarded in the TRILL multicast mode, the first data packet is determined to be a unicast packet whose MAC address search fails.

Optionally, the processor 502 is further configured to obtain information about the another RB bridge carried in the MAC address response packet, and add the destination MAC address and the MAC address table to the MAC address table. An entry of a correspondence relationship of information of another RBridge.

The transmitter 503 is specifically configured to send a subsequently received second data packet including the destination MAC address to the another RB through the TRILL unicast mode according to the entry.

Optionally, the inner layer destination media access control DMAC address of the MAC address response message is a MAC address of the RB, and the inner source media access control SMAC address is a destination MAC address of the first data packet. The virtual local area network VLAN is the VLAN to which the destination MAC address of the first data packet belongs, the nickname of the egress RBridge is the nickname of the RBridge, and the nickname of the ingress RBridge is the nickname of the other RBridge.

FIG. 8 is a schematic structural diagram of still another routing bridge according to an embodiment of the present invention. The routing bridge 600 includes:

The receiver 601 is configured to receive a media access control MAC address request message sent by another RB through the TRILL multicast mode, where the load of the MAC address request message includes a target MAC address.

The processor 602 is configured to determine whether a MAC address in the RB bridge is the target MAC address.

The transmitter 603 is configured to: when the processor 602 determines that the MAC address of the RBridge is the target MAC address, send a MAC address response message to the another RB through the TRILL unicast mode, where the MAC The address response message carries the information of the RB bridge, so that the another RB bridge sends the subsequently received destination MAC address including the target MAC address to the RB through the TRILL unicast mode according to the information of the RBridge. Second data message.

Optionally, the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control SMAC address is a MAC address of the another RBridge. The destination MAC address in the payload of the MAC address request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs, the first data packet and the second datagram. The text includes the same destination MAC address.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

A method for forwarding a message in a multi-link transparent interconnection TRILL network, comprising:

Receiving, by the first RB, a first data packet, where the first data packet includes a destination media access control MAC address;

If the first RB bridge does not find an entry including the destination MAC address in the MAC address table, the first RBridge sends a MAC address to other RBridges in the TRILL network by using TRILL multicast mode. a request packet, where the payload of the MAC address request packet carries the destination MAC address of the first data packet;

Receiving, by the first routing bridge, a MAC address response message sent by the second routing bridge, where the MAC address response message carries the information of the second routing bridge;

The first routing bridge sends the subsequently received second data packet including the destination MAC address to the second routing bridge in the TRILL unicast mode according to the information of the second routing bridge.
The method according to claim 1, wherein the method further includes: before the first RB sends a MAC address request message to the other RBs in the TRILL network by using the TRILL multicast mode, the method further includes:

Determining whether the destination MAC address of the first data packet is a unicast MAC address,

When the destination MAC address of the first data packet is a unicast address, the first routing bridge determines whether the forwarding manner of the first data packet is a TRILL multicast mode.

When the first data packet is forwarded in the TRILL multicast mode, the first data packet is determined to be a unicast packet whose MAC address search fails.
The method according to claim 1 or 2, wherein the first routing bridge sends the subsequently received information to the second routing bridge in a TRILL unicast manner according to the information of the second routing bridge, including the The second data packet of the destination MAC address, including:

Obtaining, by the first routing bridge, information about the second routing bridge carried in the MAC address response message;

Adding, by the first routing bridge, an entry including a correspondence between the destination MAC address and the information of the second RBridge in the MAC address table;

And the first routing bridge sends, according to the entry, the second received data packet including the destination MAC address to the second routing bridge in a TRILL unicast mode.
The method according to any one of claims 1 to 3, wherein the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control SMAC The address is the MAC address of the first RBridge, and the target of the load of the MAC address request packet The MAC address is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs.

The customized multicast MAC address is used to indicate that the packet whose destination MAC address is the customized multicast MAC address is a unicast packet whose MAC address search fails.
The method according to claim 4, wherein the inner layer destination media access control DMAC address of the MAC address response message is the MAC address of the first RBridge, and the inner layer source media access control SMAC address is The destination MAC address of the first data packet, the virtual local area network VLAN is the VLAN to which the destination MAC address of the first data packet belongs, the nickname of the egress RBridge is the nickname of the first RBridge, and the nickname of the ingress RBridge Is the nickname of the second routing bridge.
A method for forwarding a message in a multi-link transparent interconnection TRILL network, comprising:

The second routing bridge receives the media access control MAC address request packet sent by the first routing bridge in the TRILL multicast mode, where the load of the MAC address request packet includes the target MAC address;

If the MAC address of the second RBridge is the target MAC address, the second RB bridge sends a MAC address response message to the first RB through the TRILL unicast mode, where the MAC address response message is sent. Carrying the information of the second RBridge, so that the first RB bridge sends the subsequently received PDCCH including the target MAC to the second RB through TRILL unicast mode according to the information of the second RBridge. The second data message of the address.
The method according to claim 6, wherein the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control SMAC address is the first route. The MAC address of the bridge, the destination MAC address in the payload of the MAC address request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs, the first data packet The same destination MAC address is included with the second data message.
The method according to claim 7, wherein the inner layer destination media access control DMAC address of the MAC address response message is the MAC address of the first RBridge, and the inner layer source media access control SMAC address is The destination MAC address, the virtual local area network VLAN is the VLAN to which the target MAC address belongs, the nickname of the egress RB in the TRILL unicast header is the nickname of the first RBridge, and the nickname of the ingress RB is the second route. The nickname of the bridge.
A routing bridge, comprising:

a first receiving module, configured to receive a first data packet, where the first data packet includes a destination media access control MAC address;

The first sending module is configured to search the MAC address table, and if the entry including the destination MAC address is not found in the MAC address table, send the MAC address to other routing bridges in the TRILL network by using the TRILL multicast mode. a request packet, where the payload of the MAC address request packet carries the destination MAC address of the first data packet;

a second receiving module, configured to receive a MAC address response message sent by another routing bridge, where the MAC address response message carries information of the another routing bridge;

a second sending module, configured to send, according to the information about the another RB bridge received by the second receiving module, the subsequently received destination MAC address by using the TRILL unicast mode to the another RBridge Second data message.
The RBridge according to claim 9, further comprising: a determining module, configured to send, by the first sending module, a MAC address request message to other RBridges in the TRILL network by using a TRILL multicast mode Before determining whether the destination MAC address of the first data packet is a unicast MAC address, and determining the first data packet when the destination MAC address of the first data packet is a unicast address The forwarding mode is the TRILL multicast mode. When the forwarding mode of the first data packet is the TRILL multicast mode, the first data packet is determined to be a unicast packet with the MAC address search failure.
The RBridge according to claim 9 or 10, wherein the RBridge further comprises:

An acquiring module, configured to acquire information about the another RB bridge carried in the MAC address response packet; and

And an adding module, configured to add, in the MAC address table, an entry that includes a correspondence between the destination MAC address and the information of the another RBridge;

The second sending module is configured to send a subsequently received second data packet including the destination MAC address to the another RB through the TRILL unicast mode according to the entry.
The routing bridge according to any one of claims 9 to 11, wherein the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control The SMAC address is the MAC address of the RB, the destination MAC address in the payload of the MAC address request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs. ,

The customized multicast MAC address is used to indicate that the packet whose destination MAC address is the customized multicast MAC address is a unicast packet whose MAC address search fails.
The RBridge according to claim 12, wherein the inner layer destination media access control DMAC address of the MAC address response message is a MAC address of the RBridge, and the inner layer source media access control SMAC The address is the destination MAC address of the first data packet, the virtual local area network VLAN is the VLAN to which the destination MAC address of the first data packet belongs, the nickname of the egress routing bridge is the nickname of the routing bridge, and the entrance routing bridge is Nickname is the nickname of the other RBridge.
A routing bridge, comprising:

a receiving module, configured to receive a media access control MAC address request message sent by another RB through the TRILL multicast mode, where the load of the MAC address request message includes a target MAC address;

a sending module, configured to send a MAC address response message to the another RB through the TRILL unicast mode, where the MAC address of the RB is a destination MAC address, where the MAC address response message carries the message Decoding the information of the bridge, so that the another RB bridge sends the subsequently received second data packet including the target MAC address to the RB through TRILL unicast mode according to the information of the RBridge.
The RBridge according to claim 14, wherein the inner layer destination media access control DMAC address of the MAC address request message is a customized multicast MAC address, and the inner layer source media access control SMAC address is the other one. a MAC address of the RB, the destination MAC address in the payload of the MAC address request packet is the destination MAC address of the first data packet, and the virtual local area network VLAN is the VLAN to which the target MAC address belongs, the first datagram The text and the second data message include the same destination MAC address.
The RBridge according to claim 15, wherein the inner layer destination media access control DMAC address of the MAC address response message is the MAC address of the another RBridge, and the inner layer source media access control SMAC address is The destination MAC address, the virtual local area network VLAN is the VLAN to which the target MAC address belongs, the nickname of the egress RB in the TRILL unicast header is the nickname of the other RB, and the nickname of the ingress RB is the RB Nickname.