TWI602416B - IP allocation method for automatic construction of telecommunication network - Google Patents

Description

IP allocation method for automatic deployment of telecommunication network

The present invention relates to an IP allocation method for automatic deployment of a telecommunication network, and particularly applicable to an in-band/out-of-band network management architecture without using DHCP. (Dynamic Host Configuration Protocol) A method of assigning an IP address to a network element (NE, NE, hereinafter referred to as NE).

In the prior art, when telecommunications network deployment is performed, each newly added network component needs to be set such that the network component is under the control and management of a central host (for example, a component management system).

However, when a large number of the network components are set, it takes a lot of manpower and time, that is, the cost of manpower and time increases in proportion to the number of installed network components. In addition, the owner also needs to pay expensive educational training costs to train personnel to deploy the network components.

Traditionally, when the demand for the network component is increased, in addition to increasing the manpower support, the deployment time can be lengthened. However, in the long run, a large amount of this manpower demand is only temporary rather than lasting, and too long deployment time will cause users to slash and slow down the growth of the telecommunications network, so the above methods are very costly and Inefficient.

Therefore, although the network component can complete the automatic setting after the physical circuit is set up, the above-mentioned missing can be solved. However, before the automatic setting, the component management must be obtained. Server address information, and the wiring addresses that the components themselves can use, are traditionally expensive and inefficient.

In order to solve the above-mentioned shortcomings, the present invention provides an IP address allocation method and an LLDP group broadcast packet, and the automatic telecommunication network deployment is completed without using a DHCP server and across the IP network segment. Missing in knowing technology.

One object of the present invention is to provide an IP allocation method for automatic deployment of a telecommunication network, which provides a network element newly placed in a telecommunication network that can be easily connected to an Element Management System (EMS) server. Line, for the purpose of fast and automated construction of telecommunications networks.

Another object of the present invention is to provide guidance for other network elements that have been successfully wired to the component management system server when a new network component is placed in the telecommunications network, in accordance with the above method. Easily and successfully connect to the component management system server.

According to the above method, when the network component is to be connected to the component management system server, the IP address can be allocated to the newly added NE without the DHCP server, and the network is avoided. When the DHCP server allocates an IP address, it cannot manage the network segment.

Another object of the present invention is to pre-plan the IP domain information to be used in each network interval and to construct the information together with the information required to link to the management device, according to the above method. Set the edge network element to the interval (usually a device with a LAN or VLAN boundary).

According to another aspect of the present invention, the LLDP (Link Layer Discovery Protocol) packet is encapsulated when the multicast is performed by using the LLDP packet. In addition to the IP domain information and the connection information of the management device, the content will also be tagged with the timestamp that is recently connected to the management device, as the update basis for other devices to receive the LLDP packet, so that the NE will confirm before sending the multicast packet. Whether the information it has is the most immediate, and only in the most immediate situation, will the information folder be brought into the LLDP packet, and then sent for the group broadcast.

Still another object of the present invention is to enable the EMS server to update the flag status of the NE active or inactive in the EMS server according to the above method, and set the valid NE to send the LLDP. The multicast packet.

To achieve the above object or other objects, the present invention provides an IP allocation method for automatic deployment of a telecommunication network, which is used for in-band/out-of-band network management. A multi-network element and component management system server is deployed in the architecture, and the method includes: a pre-configuration step of configuring a plurality of network intervals and IP domains used in each of the network sections, and each zone belongs to The information of the IP range and the IP domain of the EMS server are entrained in the LLDP packet for multicasting together with the timestamp information of the LLDP packet; an EMS server connection step, a network component is transmitted through Receiving the LLDP packet to obtain IP domain information of the EMS server, where the LLDP packet includes a random IP address interval of the network interval currently located and a specified IP address interval, the network component is The EMS server's IP domain information is connected to the EMS server; and an EMS server registration step is performed after the network component receives the confirmation registration packet of the EMS server, and obtains the designation of the EMS server. Within the IP address section Specify the IP address information (that is, the IP address that will actually be used after the assignment, not the temporary IP address), and update the IP address of the network element to the specified IP address to re- Establishing a network connection path between the network component and the EMS server, wherein the network component is connected to the EMS server through the specified IP address, and the LLDP packet of the network component is encapsulated The broadcast status is updated to be effective for the multicast of the LLDP packet to which the network element belongs, wherein the LLDP packet to which the network element belongs includes The IP domain information of the EMS server, the IP domain information of the network element, and the timestamp when the network element is updated.

Compared with the prior art, the IP distribution method automatically constructed by the telecommunication network of the present invention can provide the NE to connect to the EMS server by itself, and set the NE through the EMS server to establish both. The connection path between.

In addition, after the NE system successfully establishes a connection with the EMS server, the successfully connected message can be transmitted to other NEs through a Link Layer Discovery Protocol (LLDP) packet, so that other NE systems can be resolved by The domain of the IP address attached to the packet is the IP address of the EMS server and can be successfully connected to the EMS server.

S100~S300‧‧‧ method steps

S101~S105‧‧‧ method steps

S300~S307‧‧‧ method steps

13‧‧‧Edge NE

14‧‧‧Edge NE

15‧‧‧Edge NE

16‧‧‧Edge NE

17‧‧‧Edge NE

18‧‧‧Edge NE

19‧‧‧NE

20‧‧‧Form

21‧‧‧ field (network section name)

22‧‧‧ Field (IP domain)

IPC-VLAN‧‧‧ address information

IPS6-VLAN‧‧‧ address information

IPS7-VLAN‧‧‧ address information

1 is a flowchart of a method for automatically allocating an IP network of a telecommunication network according to an embodiment of the present invention; FIG. 2 is a pre-configuration step of an IP allocation method for automatically deploying a telecommunication network according to an embodiment of the present invention. FIG. 3 is a diagram showing the range of displaying the VLAN network and the LLDP packet on the network in an embodiment of the present invention; FIG. 4 is a preset setting of displaying the data inventory in the EMS server according to an embodiment of the present invention; FIG. 5 is a flow chart of a method for connecting and registering an EMS server in an embodiment of the present invention.

In order to fully understand the objects, features and advantages of the present invention, the present invention will be described in detail by the following specific embodiments and the accompanying drawings.

The present invention pre-plans the relevant configuration of the network through a pre-configuration step of the network environment, so that the network element (network element, subsequently referred to as NE) and the edge network element of the network interval A piece (or Trail Termination Point) that can be quickly and successfully connected to an Element Management System Server (EMS Server, hereinafter referred to as an EMS server).

Please refer to FIG. 1 , which is a flowchart of a method for automatically configuring an IP address of a telecommunication network according to an embodiment of the present invention. The telecommunication network deployment method of the present invention includes: a pre-configuration step S100, and an EMS server connection step. 200, and the EMS server registration step S300.

The pre-configuration step S100 configures a plurality of network intervals and IP domains used in each of the network sections, and the information of the IP range to which each section belongs and the IP domain of the EMS server are carried in the Link Layer Discovery Protocol ( In the packet of LLDP, the multicast is used together with the timestamp information of the LLDP packet.

In the EMS Server connection step 200, the NE obtains the IP domain information of the EMS server by receiving the LLDP packet, where the LLDP packet includes a random IP address interval and a specified IP of the network interval currently located. Information of the address interval, the NE is connected to the EMS server by the IP domain information of the EMS server.

The EMS server registration step S300 is to obtain information about a specified IP address in a specified IP address segment dispatched by the EMS server after the NE receives the confirmation registration packet of the EMS server, and update the information. The IP address of the NE is the designated IP address to re-establish a network connection path between the NE and the EMS server, wherein the NE is connected to the EMS server through the specified IP address. And updating the broadcast status of the LLDP packet of the NE to be active to perform the multicast broadcast of the LLDP packet to which the NE belongs, where the LLDP packet to which the NE belongs includes the IP domain information of the EMS Server, and the network component. IP domain information and the timestamp when the NE was updated.

Next, please refer to FIG. 2, which is a flowchart of a pre-configuration step method of an IP allocation method for automatically deploying a telecommunication network in an embodiment of the present invention. In FIG. 2, before the entire telecommunication network is established, as shown in step S101, network environment planning is performed, and an IP domain to be used in each network section is pre-planned. Each network element (NE) can be a data switch. After the planning of step S101 is completed, as shown in step S102, the configuration information of the IP domain of each network interval is recorded and stored on the EMS server. In the database. See also Figures 3 and 4 at the same time. Figure 3 is an example of the contents stored. The symbol 20 of Figure 4 represents the table of contents, field 21 is the name of the network section, and field 22 is The IP domain used by the network interval. In Table 20, there is a C-VLAN (500) and two S-VLANs (60 and 70) respectively. In the LLDP protocol, different network segments use different multicast addresses in the database. The data can indicate the level of the network interval. For example, the IP domain of C-VLAN (500) is 16.16.x.0/16, and the IP domain of two S-VLANs (60, 70) is 16.16. X.0/24.

Next, in the next step S103, the IP domain used in the network section is set to two NEs in the edge of the network section, that is, the two ends of the IP domain configured in each network section are respectively set. To the two NEs in each of the network sections, as the two edges NE used to define the network interval in each of the network sections. In the network illustrated in FIG. 4, the network includes a C-VLAN (500) and two S-VLANs (60, 70) located in the C-VLAN (500). In such a network architecture, the edge NEs of the network section of the C-VLAN (500) are the edge NE13 and the edge NE18, respectively, and the edge NEs of the network section of the S-VLAN (60) are the edge NE14 and the edge NE15, respectively. And the edge NEs of the network section of the S-VLAN (70) are the edge NE16 and the edge NE17, respectively.

After the step S103 is completed, the setting of the edge NEs is completed, and then step S104 is performed to start the edge NEs that are set to start running on the network, and the LLDP packet broadcast status in the edge NEs is preset by inactive. Change to active. The edge NEs that are changed to the invalid state will start to send LLDP packets, and these packets will carry the following information: (1) The IP domain used in the network interval, that is, the IP domain information of the edge network component (2) The information linked to the EMS server, that is, the IP domain information of the EMS server (3) sends the timestamp of the LLDP packet. This pre-configuration step is completed after the LLDP packet is sent.

Figure 4 shows the contents of the LLDP packets transmitted in these intervals. For example, the edge NE13 in the C-VLAN (500) interval is sent to the LLDP packet of the edge NE18, and the multicast address used is "01-80" of the "Nearest non-TPMR bridge" level defined by LLDP. -C2-00-00-03". "01-80-C2-00-00-03" is the MAC address of the edge NE13. The hierarchical multicast address can be transmitted through the S-VLAN under the definition of LLDP. this invention The packet of the multicast LLDP is encapsulated with the information of the IP domain used by the C-VLAN, as indicated by the address information IPC-VLAN, which is 16.16.0.0/16, and the IP is transmitted through the multicast. The domain information informs each NE in the entire C-VLAN network interval, such as the edge NE (14~17) of the C-VLAN and the S-VLAN network interval, and these edge NEs may also be referred to as edge switchers.

The IPS6-VLAN in FIG. 4 shows the IP domain information transmitted in the S-VLAN (60) network interval, which is 16.16.64.0/24, and the IPS7-VLAN is displayed in the S-VLAN (70). The IP domain information transmitted in the network interval is 16.16.63.0/24. After completing the pre-configuration step, the information is sent by the edge device (NE) of the S-VLAN network interval. The multicast address used is "01-80-C2" of the "Nearest bridge" level defined by LLDP. -00-00-0E", and is entrained in the LLDP multicast packet. Through the multicast, the IP domain information is notified to each NE in the entire S-VLAN network interval, such as NE19. The "01-80-C2-00-00-0E" is, for example, a physical address (MAC address) of the edge NE16 or the edge NE17.

Next, please refer to FIG. 5, which is a flowchart of a method for connecting and registering an EMS server according to an embodiment of the present invention. As shown in step S300, the NE newly added to the network waits for the LLDP packet to be received to obtain a message about the network carried in the packet. Since the LLDP packet is a packet of Layer 2, the newly added NE does not need to be preset with an IP address.

Next, in step S301, it is displayed that the NE receives the LLDP packet of the multicast broadcast, and compares the time stamp in the LLDP packet with the old time stamp of the information record in the NE, and only uses the time stamp as the new LLDP packet. The network information entrained in the packet replaces the setting in the existing NE (ie, proceeds to the next step S302). If the time stamp in the received LLDP packet is older, then returning to step S300 to continue to collect the next LLDP packet.

Next, in step S302, the NE obtains the entrapped network information from the LLDP packet, including the link information of the EMS server and the IP domain used by the network segment represented by the LLDP packet, and stores the information in the NE record. And update the timestamp of this record to become the timestamp of the NE when it broadcasts the LLDP packet in the future. Therefore, in this step, the NE obtains the IP domain information of the EMS server, and the IP domain information in the LLDP packet includes a random IP address interval and a specified IP address. Interval information. Taking FIG. 4 as an example, in the network interval of the S-VLAN (70), the Internet Protocol address is, for example, 16.16.63.0 to 16.16.63.255, and in step S302, the network address is 16.16. 63.0 to 16.16.63.20 is set to the random IP address range; and 16.16.63.21 to 16.16.63.255 in the network address is set to the designated (addressed) IP address range.

Next, in step S303, the IP address of the NE is set. The NE selects a network IP address from the random IP address interval to temporarily serve as the local address of the NE, and causes the NE to connect to the telecommunication network through the selected network IP address. The EMS server.

Next, in step S304, the NE having the local address is logged into the EMS server according to the connection information (including the IP domain information of the EMS server) entrained in the LLDP packet, to be between the NE and the EMS server. Establish a network connection path.

Next, in step S305, after successfully connecting to the EMS server, the NE sends a registration message to the EMS server, informing the EMS server that the NE is ready to accept the management of the server. The EMS server that receives the registration message selects an unused IP address in the specified IP address range of the IP network domain of the network interval according to the current network interval, as the NE can Use the IP address and send a message to inform the NE.

Next, in step S306, the EMS server sends an update packet through the network connection path, and the NE resets the IP address of the NE according to the update packet. For example, as described in the foregoing example, an address is arbitrarily selected from a specified address interval (16.16.63.21 to 16.16.63.255).

Next, in step S307, after the NE logs in to the EMS server, the LLDP packet broadcast status of the network element is updated to be effective for performing the multicast of the LLDP packet to which the network element belongs, where the LLDP of the network element belongs. The packet contains the IP domain information of the EMS server, the IP domain information of the network element, and the timestamp when the network element is updated. In turn, it starts to send to other NEs in the vicinity. After completing step S307, the flow returns to step S300.

In addition, if the NE is not successfully registered to the EMS server, step S308 is performed, which indicates that the network element (NE) cannot register to the EMS server, and broadcasts the LLDP packet of the NE. The status is updated to be invalid to stop sending LLDP packets.

Next, in step S309, the NE waits for a preset time to determine whether any LLDP packets from other NEs are received within the preset time. If a new LLDP packet is received, the process returns to step S301 to perform a comparison. For the timestamp in the packet. If the LLDP packet is not received within the preset time, the process returns to step S303, and another IP address is selected in the random IP address interval to perform connection with the EMS server.

In summary, the telecommunication network deployment method of the present invention pre-configures the complex network interval and the IP domain of each of the network segments, and further, the configurations are set to each network interval. In the edge NE, these NEs are arranged to be placed on the telecommunication network after the setting is completed. Once the pre-configuration is complete, the telecommunications network can be deployed without the need for a DHCP server, and there is no need to use traditional one-by-one methods to build a telecommunications network. The telecommunications network deployment method disclosed in the present invention enables the network elements (NEs) to be self-wired to the EMS server through the reception and parsing of the LLDP packet, and the network component is specified via the EMS server. The setting of the IP address establishes a connection path between the two.

In addition, when the network element (NE) successfully establishes a connection with the EMS server, the IP domain used by the network element (NE), the information linking the EMS server, and the time stamp when the information is updated. In addition, the LLDP packet can be multicast to other network elements (NEs), so that other network components can be successfully connected to the EMS server by the information obtained by parsing the LLDP packet. .

The invention has been described above in terms of the preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of the present invention is defined by the scope of the patent application.

S100~S300‧‧‧ method steps

Claims (3)

An IP allocation method for automatically deploying a telecommunication network is used for setting a plurality of network components and an EMS server in an intra-frequency/extra-frequency network management architecture, the method comprising: a pre-configuration step, configuring a plurality of network intervals and IP domains used by each of the network sections, and the information of the IP range to which the network section belongs and the IP domain of the EMS server are entrained in an LLDP packet for use together with the The timestamp information of the LLDP packet is multicasted together; an EMS server connection step, in which one of the network elements receives the IP domain information of the EMS server through the receipt of the LLDP packet, the LLDP The packet includes information of a random IP address interval of the network interval currently located and a specified IP address interval, the network component is connected to the EMS server by the IP domain information of the EMS server; and an EMS servo And the step of registering, after the network component receives the confirmation registration packet of the EMS server, obtaining information about a specified IP address in a specified IP address segment sent by the EMS server, and updating the network The IP address of the road component is the finger An IP address to re-establish a network connection path between the network component and the EMS server, wherein the network component is connected to the EMS server through the specified IP address, and the network is connected The LLDP packet broadcast status of the path component is updated to active for multicasting the LLDP packet to which the network element belongs, wherein the LLDP packet to which the network element belongs includes IP domain information of the EMS server, and the network component IP domain information, and a timestamp when the network component is updated; wherein the pre-configuration step includes: (a1) performing a network environment planning, configuring a plurality of network segments in the network environment and IP domains used in the network segments; (a2) using the IP networks used in the network segments The domain is recorded in the EMS server; (a3) setting the two ends of the IP network domain configured in each network section to the two network components in the network section, respectively, as the network The two edge network elements used to define the network interval in the path interval; and (a4) updating the LLDP packet broadcast status of the two edge network elements in each network interval to be valid, so that the edge network The circuit component performs multicasting of the associated LLDP packet, wherein the LLDP packet of the edge network component includes IP domain information of the EMS server, and an IP domain of one of the edge network components Information, and the timestamp when one of the edge network elements is updated. The method of claim 1, wherein the EMS server connection step comprises: (b1) the network element waits to receive the LLDP packet; (b2) after receiving the LLDP packet, The network element determines whether the timestamp in the LLDP packet is newer than the network element memory, and the timestamp in the LLDP packet is no longer waiting for the next LLDP packet when the network element memory is newer. (b3) the network component obtains IP domain information of the EMS server, and the IP domain information in the LLDP packet is obtained when the timestamp in the LLDP packet is newer than the network component memory; (b3) Information including the random IP address interval and the specified IP address interval; and (b4) The network element uses one of the IP addresses in the random IP address interval to connect to the EMS server. The method of claim 2, wherein, when the network element fails to register the EMS server, the LLDP packet broadcast status of the network element is updated to be invalid, and is received within a preset time. Returning to step (b2) when other LLDP packets are received, and returning to step (b4) when another LLDP packet is not received within the preset time to use another IP address in the random IP address interval to perform with the EMS. Server connection.