WO2007109974A1

WO2007109974A1 - A device and method to improve the broadcast efficiency of supervlan

Info

Publication number: WO2007109974A1
Application number: PCT/CN2007/000739
Authority: WO
Inventors: Jian Feng; Zhiqiang Jiang; Huaibin Wang
Original assignee: Zte Corporation
Priority date: 2006-03-24
Filing date: 2007-03-07
Publication date: 2007-10-04
Also published as: CN101043423A; CN100579062C

Abstract

A device and method to improve the broadcast efficiency of the SUPERVLAN is disclosed. The present invention is proposed to solve the problem of the low efficiency of the sending broadcast packets that exists in the prior SUPERVLAN interface. It includes: a network device set with SUPERVLAN interfaces, the network device includes: a setting and management module, a packet transmitting module; an IP POOL management module; Based on the source IP address of the packet, the said packet transmitting module searches for the IP POOL that it belongs to, and send broadcast packet to the VLAN or the physical interface which is gotten from the search. Compared with the maintenance and management of the prior SUPERVLAN module, the present invention is avail to decrease the broadcast packets of the network device, and improve the broadcast packet efficiency of the SUPERVLAN. Through parting the IP POOL manually, it is flexible and reliable, and can confine the access of the users in illegal address segment efficiently.

Description

Apparatus and method for improving SUPERVLAN broadcast efficiency

Technical field

The present invention relates to an apparatus and method for improving network broadcast efficiency, and more particularly to an apparatus and method for improving broadcast efficiency based on the SUPERVLAN function. Background technique

SUPERVLAN, also known as VLAN aggregation, binds multiple sub-VLANs or real interfaces to a virtual interface. This technology enables hosts belonging to different virtual broadcast domains in the same physical switching device to be on the same IPv4 subnet. And use the same default gateway, which can eliminate the original restriction of having to use a private IP subnet in a VLAN or MAN. Using this mechanism can significantly reduce the consumption of IP address space in VLANs or MANs, and improve the efficiency of address usage. In addition, this also reduces the difficulty of IP address management in the network.

In the SUPERVLAN technology, different VLANs or real interfaces use the same IP subnet by binding multiple sub-VLANs (switches) or real interfaces (routers) to one SUPERVLAN virtual interface. Control the configuration to control whether each sub-VLAN or real interface can communicate. For different sub-VLANs (or real interfaces) still in the same IPV4 subnet, the communication between them is the communication between the same subnet, so it is necessary to provide functions similar to ARP proxy between different VLAN sub-interfaces. To implement communication between different VLAN sub-interfaces and the same SUIPERVLAN.

When transmitting a broadcast packet, the SUPERVLAN interface needs to broadcast to all VLANs or real interfaces bound to it. If the sub-VLAN or the real interface is bound to a large number of times, the broadcast packets will be copied in multiple copies, which may result in system packet is busy and affects system processing efficiency. For example, the SUPERVLAN interface broadcasts ARP request packets to all sub-VLANs or real interfaces. The response packets are received from a VLAN or a real interface. At the same time, the subnet VLAN or the physical interface of the subnet or the real interface will only receive the broadcast packets on the sub-VLAN or the real interface. The SUPERVLAN interface does not forward these broadcast packets. It is wasteful that the SUPERVLAN interface sends broadcast packets to all sub-VLANs. Summary of the invention

In view of the deficiencies and deficiencies existing in the prior art, an object of the present invention is to provide an improvement

The device and method for the broadcast efficiency of the SUPERVLAN can reduce the broadcast range of the SUPERVLAN interface packets.

The technical solution adopted by the invention is:

An apparatus for improving broadcast efficiency of a SUPERVLAN, comprising: a network device having an SUPERVLAN interface, the network device includes:

A configuration management module is configured to configure an IP address for the SUPERVLAN interface, bind the VLAN or the real interface to the SUPERVLAN interface, and configure an IP POOL range on the VLAN or the real interface.

An IP POOL management module, configured to manage the IP POOL configuration information; a message sending module, searching for an IP POOL of the VLAN or the real interface in the IP POOL management module according to the source IP address of the packet, and searching for The received VLAN or real interface sends broadcast packets.

Further, the network device is a three-layer network device.

Further, the apparatus further includes a write driver module for writing IP POOL configuration information to the underlying driver.

Further, the SUPERVLAN IP POOL management module includes:

a user interface module for configuring and maintaining user information;

a database interface module for performing database management of related information;

The SUPERVLAN IP POOL table management module is responsible for the synchronization, write driver, and processing of the transceiver module of the SUPERVLAN IP POOL configuration information.

Further, the SUPERVLAN IP POOL management module further includes a write driver module, configured to write IP POOL configuration information to the underlying driver.

The present invention also provides a method for improving the broadcast efficiency of SUPERVLAN, which is characterized in that Includes:

On the existing Layer 3 network device, first configure the VLAN or real interface to the SUPERVLAN interface through the configuration management module, and configure the IP POOL range for the VLAN or the real interface. Then use the IP POOL management module to configure the IP POOL configuration information. Management

When the broadcast ^ is sent, it is searched in the IP POOL management module according to the source IP address of the message.

VLAN or real interface belongs to IP POOL,

According to the search result, the SUPERVLAN interface processes broadcast packets.

Further, the method further includes the step of writing the IP POOL configuration information to the underlying driver using the write driver module.

Further, the step of writing the IP POOL configuration information to the underlying driver by using the write driver module is included in the step of managing the IP POOL configuration information by using the IP POOL management module.

Further, the process of processing the broadcast packet according to the result of the search is as follows: If the IP POOL to which the source IP address of the packet belongs is found, the broadcast packet is sent to the VLAN or the real interface corresponding to the IP POOL; To, whether to broadcast or not according to whether the broadcast function of the SUPERVLAN interface is enabled.

Further, according to whether the broadcast function of the SUPERVLAN interface is enabled, the specific method for determining whether to perform the broadcast transmission is as follows: When the broadcast function of the SUPERVLAN interface is enabled, broadcast to all VLANs or real interfaces; when the broadcast function of the SUPERVLAN interface is disabled, the broadcast is not broadcast.

With the above technical solution, the SUPERVLAN interface to send broadcast packets, the sending module Gen ¹ ^ find relevant VLAN or the physical interface in the IP ip POOL the POOL (address pool) management module according to the source IP address to Reduce the range of broadcast packets, and then send broadcast packets to the discovered VLAN or real interface, which improves the efficiency of the system for processing broadcast packets. The waste of sending broadcast packets to all sub-VLANs or real interfaces on the SUPERVLAN interface is avoided.

BRIEF abstract

1 is a structural block diagram of an apparatus for improving SUPERVLAN broadcast efficiency according to the present invention; 2 is a networking diagram of a SUPERVLAN functional device according to the present invention;

3 is a composition diagram of a SUPERVLAN function module of the present invention;

4 is a flowchart of a process for transmitting a broadcast message of a SUPERVLAN interface according to the present invention; and FIG. 5 is a composition diagram of a SUPERVLAN IP POOL management module of the present invention. Preferred embodiment of the invention

The technical solution of the present invention will be described in more detail below with reference to the accompanying drawings and embodiments. The invention improves the broadcasting efficiency by manually dividing the IP address segment on the basis of the SUPERVLAN function.

As shown in FIG. 1 , the device for improving the broadcast efficiency of the SUPERVLAN includes a network device with an SUPERVLAN interface, and the network device includes:

A configuration management module provides a human-machine interface for configuring an IP address for the SUPERVLAN interface, binding the VLAN or the real interface to the SUPERVLAN interface, and adding an IP POOL binding on the VLAN or the real interface—that is, on the VLA or the real interface. Configure the IP POOL range and enable/disable the IP POOL binding function on the SUPERVLAN interface.

An IP POOL management module, configured to manage the IP POOL configuration information; the IP POOL configuration information is a correspondence between a VLAN or a real interface configured by the configuration management module and an IP POOL range;

A packet sending module searches the IP POOL management module for the IP POOL range corresponding to the VLAN or the real interface according to the source IP address of the packet, and sends a broadcast packet to the found VLAN or the real interface.

The above network devices may be Layer 3 network devices, such as routers, Ethernet switches, and the like.

Burgundy ^ ¹ transmits broadcast packets, by searching the VLAN or IP POOL solid interfaces, or the real only the VLAN interface to transmit broadcast packets, thereby reducing the broadcast packets in the network.

If the POOL to which the IP belongs is not found, according to whether the broadcast function on the SUPERVLAN interface is enabled, if it is enabled to broadcast to all VLANs or real interfaces to which it belongs; If it can be turned off, it will not be broadcast.

The network device may further include a write driver module, configured to write the IP POOL configuration information to the underlying driver. If the SUPER VLAN enables the IP POOL filtering function, the bottom layer directly filters when the packet is received, if the source IP address of the packet is not in the VLAN. Otherwise, the packet is discarded within the IP POOL range of the real interface. If you are within the IP POOL range of the VLAN or real interface, continue to receive the message.

If IP POOL filtering is disabled, the underlying layer may not be detected when it is being received.

A method to improve the efficiency of SUPERVLA broadcasting, including:

On an existing Layer 3 network device, first configure the VLA or real interface to the SUPERVLAN interface through the configuration management module, and configure the IP POOL range for the VLAN or the real interface. Then configure the IP POOL by using the IP POOL management module. When the broadcast packet is sent, the IP POOL management module searches for the IP address of the VLAN or the real interface according to the source IP address of the packet.

The process of processing the broadcast packet according to the result of the search is as follows: if the IP POOL to which the source IP address of the packet belongs is found, the broadcast packet is sent to the VLAN or the real interface corresponding to the IP POOL; Whether to perform broadcast transmission according to whether the broadcast function of the SUPERVLAN interface is enabled.

When the SUPERVLAN interface broadcast function is enabled, broadcast to all VILA or real interfaces;

If the broadcast function of the SUPERVLAN interface is disabled, the broadcast will not be broadcast.

In the method for improving the efficiency of the SUPERVLAN broadcast, the method further includes the step of the write driver module writing the IP POOL configuration information to the underlying driver, the step comprising the step of managing the IP POOL configuration information by using the IP POOL management module.

The configuration process of the apparatus for improving the performance of the SUPERVLAN broadcast according to the present invention will be described in detail below through an example of the networking of the SUPERVLAN function device. Referring to Figure 2, the SUPERVLAN interface is configured on the router, and the 100 Mbps fei-1/1, fei- 1/2 is bound to the SUPERVLAN interface.

1) First create the SUPERVLAN interface and configure the IP address.

Interface supervlanl

Ip addr 10.1.1.1 255.255.0.0

2) Bind the real interface fei-1/1 to the SUPERVLA interface and configure the IP address segment. Interface fei-1/1

Supervlan 1

Ip supervlan pool 10.1.1.0 10.1.1.9

3) Bind the real interface fei— 1/2 to the SUPERVLAN interface and configure the IP address segment. Interface fei— 1/2

Supervlan 1

Ip supervlan pool 10.1.1.10 10.1.1.19

4) fei—1/1 to hang up the host and configure the address 10.1.1.5/24

5) fei— 1/2 to hang up the host and configure the address 10.1.1.15/24

6) Perform Ping 10.1.1.5 from the router device

7) Perform Ping 10.1.1.15 from the router device

8) Perform Ping 10.1.1.25 from the router device

9) Turn off ARP broadcast on the SUPERVLAN interface and ping 10.1.1.25 from the router device.

Interface supervlanl

Arp-braadcast disable In general, the composition of the SUPERVLAN function block, also known as the SUPERVLAN module, can be further understood in Figure 3.

Refer to Figure 3 for the composition of the SUPERVLAN function module. Among them, SUPERVLAN interface The management module manages the creation, deletion, and synchronization of the SUPERVLAN interface. The operation and maintenance (OAM) module provides an interface for the configuration and maintenance of the SUPERVLAN function; the database (DB) module is responsible for reading and writing the configuration information; and the protocol (PROTOCOL) module. Responsible for sending and receiving packets of the SUPERVLAN function; the SUPERVLAN function module writes the corresponding configuration information to the underlying driver.

The present invention is an implementation of the SUPERVLAN function module.

Figure 4 is a flow chart showing the process of transmitting broadcast packets on the SUPERVLAN interface, which is an example of a method for improving the broadcast efficiency of the SUPERVLAN.

If the message is a unicast message, it is sent by unicast;

If it is a broadcast ^ ^:艮文, first find the IP POOL according to the destination IP address, if the IP is found

The real interface (or sub-VLAN) to which the POOL belongs, sends the broadcast packet to the real interface (or the sub-VLA); if not found, it determines whether the broadcast function of the SUPERVLAN interface is enabled, and if it is enabled, all the real interfaces included in it are (or sub-VLAN) sends, otherwise the dropped message is not sent.

Refer to Figure 5 for an in-depth understanding of the SUPERVLAN IP POOL management module.

Figure 5 shows the composition of the SUPERVLAN IP POOL management module. The user interface module is responsible for the configuration and maintenance of user information; the database interface module is responsible for the database management of related information; the SUPERVLAN IP POOL table management module is responsible for the synchronization, write drive, and processing of the transceiver module of the SUPERVLAN IP POOL configuration information. The SUPERVLAN IP POOL management module further includes a write driver module for writing IP POOL configuration information to the underlying driver.

After performing the steps 1) to 5) described above, according to the processing flow shown in FIG. 4, the specific process when performing steps 6) to 9) can be obtained as follows:

Execute 6), look up the IP POOL configuration information, the IP address 10.1.1.5 belongs to the fei-1/1 address segment, and only sends the A P broadcast message to fei-1/1. Packet capture can be found, only host 1 receives the ARP request packet and gives a response.

Execute 7), look up from the IP POOL configuration information, the IP address 10.1.1.15 belongs to fei- 1/2 Addresses, only send the ARP broadcast to fei- 1/2 ^{^:} Gen text. Packet capture can be found, only host 2 receives the ARP request packet and gives a response.

Execute 8) to find the IP POOL configuration information. The IP address 10.1.1.25 does not belong to any address segment. At this time, it is determined that the broadcast function of the SUPERVLAN interface is enabled by default, and the ARP request is broadcast to all the real interfaces (including fei-1/l and fei-1/2) under the SUPERVLAN interface. Both hosts 1 and 2 can receive ARP request packets.

Execution 9. The broadcast function of the SUPERVLAN interface is disabled. The corresponding IP POOL address segment cannot be found, and the broadcast function is disabled. The broadcast packet is not sent to any interface. Hosts 1 and 2 do not receive ARP request packets.

Therefore, it can be seen that after the method of the present invention is used, the broadcast packet can be sent only to the VLAN or the real interface to which the destination IP address belongs, which reduces the range of broadcast packet transmission, thereby improving the broadcast efficiency of the SUPERVLAN.

Of course, the present invention may be embodied in various other various modifications and changes without departing from the spirit and scope of the invention. Changes and modifications are intended to be included within the scope of the appended claims.

Industrial applicability

The invention is flexible and reliable by manually dividing the IP POOL, and can effectively restrict the access of users in the illegal address segment. In the solution of the present invention, the configuration is flexible and simple, and the IP POOL configuration function can be enabled or disabled as needed, without adding additional hardware costs, and the software cost is not increased greatly, thereby effectively improving the efficiency of transmitting the broadcast message on the SUPERVLAN interface. .

Claims

Claim

A device for improving the broadcast efficiency of a SUPERVLAN, comprising: a network device with a SUPERVLAN interface, wherein the network device comprises:

A configuration management module, configured to configure an IP address for the SUPERVLAN interface, bind the VLAN or the real interface to the SUPERVLA interface, and configure an IP POOL range on the VLAN or the real interface;

2. The apparatus for improving the broadcast efficiency of a SUPERVLAN according to claim 1, wherein: the network device is a layer 3 network device.

3. The apparatus for improving the efficiency of the SUPERVLAN broadcast according to claim 2, further comprising: a write driver module, configured to write IP POOL configuration information to the underlying driver.

The device for improving the broadcast efficiency of the SUPERVLAN according to claim 1, wherein the SUPERVLAN IP POOL management module comprises:

a user interface module for configuring and maintaining user information; a database interface module for performing database management of related information;

The apparatus for improving the broadcast efficiency of the SUPERVLAN according to claim 4, wherein the SUPERVLAN IP POOL management module further comprises a write driver module, configured to write IP POOL configuration information to the underlying driver.

A method for improving the broadcast efficiency of a SUPERVLAN, which is characterized by the following steps: On an existing Layer 3 network device, first, the VLA or the real interface is bound to the SUPERVLAN interface through the configuration management module, and configured for the VLAN or the real interface. IP POOL range; then use IP POOL management module to manage IP POOL configuration information; When sending a broadcast packet, look up the IP POOL of the VLA or the real interface in the IP POOL management module according to the source IP address of the packet.

The method for improving the efficiency of the SUPERVLAN broadcast according to claim 6, further comprising: the step of writing the IP POOL configuration information to the underlying driver by using the write driver module.

8. The method for improving SUPERVLAN broadcast efficiency according to claim 7, wherein the step of writing IP POOL configuration information to the underlying driver by using the write driver module comprises performing the IP POOL configuration information by using an IP POOL management module. In the steps of management.

The method for improving the broadcast efficiency of the SUPERVLAN according to claim 6, wherein the process of processing the broadcast packet according to the search result SUPERVLAN interface is specifically: if the IP POOL to which the source IP address belongs is found, The broadcast packet is sent by the VLAN or real interface corresponding to the IP POOL. If the broadcast function is not enabled, the broadcast function is determined based on whether the broadcast function of the SUPERVLAN interface is enabled.

The method for improving the broadcast efficiency of the SUPERVLAN according to claim 9, wherein the specific method for determining whether to perform broadcast transmission according to whether the broadcast function of the SUPERVLAN interface is enabled is: when the broadcast function of the SUPERVLAN interface is enabled, to all VLANs or real interfaces. Broadcast; when the SUPERVLA interface broadcast function is turned off, it is discarded without broadcasting.