JP2003258831A - Network in multistory building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a network in a multistory building which can be easily adapted even to the multistory building which has been already constructed where a wiring space is not sufficiently secured, quarantees security between user terminals, and easily copes with a plurality of ISPs (Internet service provider). <P>SOLUTION: The network is provided with a plurality of ONUs (optical network unit) 1001 to 1004 and an access network device 2000. In the network, a plurality of ISPs are housed. Network devices 110, 210, and 310 for housing a plurality of user terminals with port subjected to a port-based VLAN are provided on each floor and they are connected by vertical system mass trunk lines L1, L2, and L3. The access network device 2000 and the network devices 110, 210, and 310 are provided with a QoS (quality of service) function so as to perform a band reservation on the trunk lines L1, L2, and L3, quaranteeing a prescribed communication rate for a particular user. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to multi-story buildings such as condominiums and multi-story buildings such as office buildings, and provides a network service to accommodate independent users in a multi-story structure. Regarding the network.

[0002]

2. Description of the Related Art As is well known, when a network is installed in a multi-story structure such as a condominium or an office building, if there is a wiring space in the structure, it is used. A large amount of vertical cables that connect floors are installed, and cables are laid directly to each user terminal to build a system.

Another method is to install network devices on each floor and connect them vertically with cables so that a plurality of user terminals on the floor can be cabled from the network devices on each floor. There is also a method of constructing a system by distributing and wiring in a star shape.

According to the former method, individual users, one company on one floor, several companies on one floor, can handle any situation of a plurality of ISP lines, and this is the most ideal service form. Since the amount of wiring becomes large, there is a problem that it is difficult to adapt to an existing building where the wiring space is not secured.

On the other hand, according to the latter method, although the amount of wiring is relatively small, it is difficult to deal with several companies, multiple ISPs, and individual users on one floor, and the network configuration is relatively simple per building. There is a problem that it can be applied only to one company, one company per floor, or a community LAN in which security can be ignored, and a problem that it is difficult to deal with a plurality of ISPs.

[0006]

In the conventional multi-layer structure network, it is difficult to adapt to a multi-layer building which is already built and has insufficient wiring space due to a large amount of vertical wiring. Or, the security cannot be guaranteed between user terminals, or multiple ISPs
There was a problem that it was difficult to deal with.

The present invention has been made to solve the above problems, and can be easily adapted even to a multi-story building that is already built and does not have a sufficient wiring space, and can be easily adapted between user terminals. It is an object to provide a network in a multi-layer structure capable of guaranteeing security and bandwidth.

Further, the present invention can be easily applied even to a multi-story building which is already built and does not have sufficient wiring space secured, and can guarantee a predetermined communication speed for a specific terminal device. The aim is to provide a possible multi-layer in-structure network.

Further, the present invention provides a network in a multi-layer structure which can be easily adapted to a multi-layer structure which is already built and has insufficient wiring space, and which can easily deal with a plurality of ISPs. The purpose is to provide.

[0010]

In order to achieve the above object, the present invention according to claim 1 is a multi-story structure which is arranged in a building having a plurality of floors and accommodates a plurality of terminal devices. An internal network having a plurality of VLAN-provided interfaces, and terminal-accommodating devices accommodating terminal devices are respectively provided on different floors on different floors for cascade connection, and at least one of the terminal-accommodating devices and an external network It is configured to include a connecting device for connecting to an external line from the.

In the multi-layer structure network having the above-mentioned structure, the terminal accommodating devices accommodating a plurality of terminal devices are cascade-connected to construct a network, and the interface accommodating the terminal devices of the terminal accommodating device is provided with VLAN. ing.

Therefore, according to the network in the multi-layer structure having the above-mentioned configuration, the multi-layer structure is constructed by cascade connection, so that it is possible to easily adapt to an existing multi-layer structure in which the wiring space is not sufficiently secured. In addition, since the terminal devices are accommodated in the interfaces provided with the respective VLANs, the high security between the interfaces can ensure the security between the terminal devices, and as a result, tenants of different companies can be tenanted on one floor. It will be possible to accept as.

The present invention according to claim 2 is a network in a multi-layered structure, which is arranged in a building comprising a plurality of floors and accommodates a plurality of terminal devices, wherein an interface for accommodating the terminal devices is provided. With multiple provisions, QoS
Terminal accommodating devices having functions are provided on different floors, respectively, and are cascade-connected to communicate with at least one of the terminal accommodating devices using the QoS function to connect the terminal accommodating device to an external line from an external network. A connection device is provided and configured.

In the multi-layer structure network having the above-mentioned structure, the terminal accommodating devices accommodating a plurality of terminal devices are cascade-connected to construct a network, and each terminal accommodating device and the connecting device are provided with the QoS function. There is.

Therefore, according to the network in the multi-layer structure having the above-mentioned structure, the multi-layer structure is constructed by the cascade connection, so that it is possible to easily adapt to the existing multi-layer structure in which the wiring space is not sufficiently secured. In addition, the QoS function can guarantee a predetermined communication speed for a specific terminal device.

Further, in the present invention according to claim 3, the connection device comprises a plurality of network units for accommodating external lines, and a concentrator device for connecting these network units and at least one of the terminal accommodating devices. Is characterized by.

In the multi-layer structure network having the above-mentioned structure, a plurality of network units are provided to accommodate a plurality of external lines, and these external lines are connected by a concentrator to a terminal accommodating device connected in cascade. I try to build a network.

Therefore, according to the network in the multi-layer structure having the above-mentioned structure, the multi-layer structure is constructed by the cascade connection, so that it is possible to easily adapt the existing multi-layer structure in which the wiring space is not sufficiently secured. Therefore, it is possible to easily support a plurality of ISPs through the plurality of external lines.

[0019]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the structure of a network in a multi-layer structure according to the first embodiment of the present invention. In addition, in the following description, in order to simplify the description, a case of applying to a building BL1 having three floors will be described as an example.

The network in a multi-layer structure shown in this figure comprises an ONU (Optical Network Unit) 1000 and network devices 100, 200 and 300.

The ONU 1000 is provided with one type of ISP (Internet Service) from outside the building BL1 through an optical fiber.
ces provider) and accommodates the trunk line L1 in the building BL1. The optical fiber-trunk line L
Optical / Ethernet (registered trademark) conversion is performed between the two to connect them.

The network device 100 is installed on the first floor, the network device 200 is installed on the second floor, and the network device 300 is installed on the third floor.

Network devices 100, 200, 300
Is a plurality of user terminals 10 on respective floors
1 to 10n, 201 to 20n, 301 to 30n are accommodated in port units, and port-based VLA for each port
N (Virtual Local Area Network) is applied to guarantee the security between the user terminals. The communication speed of each port corresponds to 100 Mbps.

In the network device 100, the interface for uplink is connected to the ONU 1000 by the trunk line L1 and the interface for downlink is connected to the network device 200 by the trunk line L2.

Similarly, in the network device 200, an interface for uplink is connected to the network device 100 by the trunk line L2, and an interface for downlink is connected to the uplink interface of the network device 300 by the trunk line L3. To be done.

Thus, the trunk lines L1, L2, L3 are
It is a vertical wiring that connects the floors of the building BL1, and a metal cable of CAT5E is used as the wiring material and corresponds to a communication speed of 1 Gbps.

Although a metal cable has been described here, the network devices 100, 200, 30 are described.
It is also possible to adopt single mode optical fiber (SMF) by changing the interface of 0.

Next, the operation of the network in the multi-layer structure having the above configuration will be described.

FIG. 2 shows network devices 100 and 20.
The operation of 0,300 will be described.

Network devices 100, 200, 300
Judges the terminal by the MAC address for each packet signal coming from the uplink, and when judging that the packet signal is addressed to the terminal connected to the accommodated port, the packet signal Transfer to port.

On the other hand, if not applicable, the packet signal is transferred to the downlink. Network device 300
When there is no downlink, or when the network on the downlink side is down, the packet signal is discarded as it is.

Further, the network devices 100, 200,
300 has a port-based VLAN for each port,
It accommodates a plurality of user terminals in units of ports. Therefore, for example, the user terminal 101 and the user terminal 10n accommodated in the network device 100 through different ports cannot recognize and monitor mutual communication.

The user terminal 301 accommodated in the network device 300 is connected to the ISP through the network device 300, the trunk line L3, the network device 200, the trunk line L2, the network device 100 trunk line L1 and the ONU 1000. For example, the user terminal 101 accommodated in the network device 100 is treated as a different network by the port-based VLAN and cannot recognize and monitor mutual communication.

As described above, in the multi-layer structure network having the above-mentioned configuration, the network devices 100, 200, 300 for accommodating a plurality of user terminals at the ports provided with the port-based VLAN are provided on each floor. Are connected by large-capacity vertical trunk lines L1, L2, L3.

Therefore, according to the network in the multi-layer structure having the above-mentioned configuration, the VLA is provided between the user terminals.
Since it is accommodated in the port provided with N, the security between the user terminals can be assured by the high security between the ports. Therefore, it is possible to welcome different companies as tenants on one floor.

Since vertical wiring for each user is unnecessary,
Even existing multi-storied buildings with insufficient wiring space can be easily adapted, and the network topology can be realized by star-type cascade connection. Can be built.

Furthermore, it is easy to change the capacity of the trunk line as required, and by this change, traffic congestion can be prevented and network performance can be improved.

Next, as a second embodiment of the present invention,
A multi-layer structure internal network connectable to a plurality of ISPs will be described.

FIG. 3 shows the structure of a network in a multi-layer structure that accommodates a plurality of ISPs. In the following description, the case of application to the building BL2 having three floors will be described as an example. That is, even with this configuration, it is possible to apply it to the case where the floor has four or more floors.

The network in the multi-layer structure shown in this figure is the ONU 1001, 1002, 1003, 1004.
, Access network device 2000, and network devices 110, 210, 310.

The ONU 1001 is connected to one type of ISP from the outside of the building BL2 through an optical fiber, and accommodates the trunk line La-1 in the building BL2, and between the optical fiber and the trunk line La-1. Optical / Ethernet conversion and connect.

Similarly, ONUs 1002, 1003, 10
Reference numeral 04 is one for connecting one type of ISP from the outside of the building BL2 through an optical fiber, respectively, and houses the trunk lines La-2, La-3, La-4 in the building BL2, respectively, and the ONU 1002 is Optical / Ethernet conversion is performed between the optical fiber and the trunk line La-2, and the ONU 1003 similarly connects the optical fiber and the trunk line La-2.
-3 between optical / Ethernet conversion, ONU1004,
The optical fiber and the trunk line La-4 are connected by optical / Ethernet conversion.

The access network device 2000 has one
It is provided on the floor of the floor and has a plurality of packages as an interface for uplink. These packages are set separately for shared ports and individual ports according to the number of ISPs that the system accommodates.

Here, it is assumed that the trunk line La-1 commonly used by a plurality of user terminals in the building BL2 is accommodated in a package set as a shared port, while the individual user terminals 100a, 200a described later are included. , 30
0a exclusively used for trunk lines La-2, La-3, L
It is assumed that a-4 is accommodated in the package set as the individual port.

The package set as the shared port and the package set as the individual port have substantially the same hardware configuration. However,
As shown in FIG. 4, port numbers # 1, # 2, and # 3 for QoS (Quality of Service) setting are set in advance for the package set as an individual port.

Also, the access network device 2000
The downlink interface has a QoS function, and is connected to the uplink interface of the network device 110 through the trunk line L1.

Then, the access network device 200
0 is based on the port numbers # 1, # 2, and # 3 for QoS setting set in the individual port by the QoS function, in cooperation with the network device 110, on the trunk line L1, the individual user terminal 100a, The 200a and 300a make bandwidth reservations for realizing 100 Mbps communication, respectively.

The network device 110 is provided on the first floor, the network device 210 is provided on the second floor, and the network device 310 is provided on the third floor.

Network devices 110, 210, 310
Is for accommodating a plurality of user terminals on the respective floors in units of ports.
LAN is applied to guarantee the security between the user terminals. The communication speed of each port corresponds to 100 Mbps.

Further, as shown in FIG. 4, a plurality of user terminals 101 to 10n accommodated in the network device 110.
Among them, the port number # 1 for QoS setting is set to the port accommodating the user terminal handled as the individual user terminal 100a.

Similarly, of the plurality of user terminals 201 to 20n accommodated in the network device 210, the port number # 2 for QoS setting is set to the port accommodating the user terminal treated as the individual user terminal 200a. .

Further, among the plurality of user terminals 301 to 30n accommodated in the network device 310, the port accommodating the user terminal to be treated as the individual user terminal 300a is set to the port number # 3 for QoS setting.

Further, the network devices 110, 210,
310 has an uplink interface and a downlink interface with a QoS function.

The downlink interface of the network device 110 is connected to the network device 210 through the trunk line L2. Similarly, the uplink interface of the network device 210 is connected to the network device 110 through the trunk line L2,
On the other hand, the downlink interface is the trunk line L3.
Is connected to the uplink interface of the network device 310 through.

Thus, the trunk lines L1, L2, L3 are
It is a vertical wiring that connects the floors of the building BL2, and a metal cable of CAT5E is used as the wiring material, and corresponds to a communication speed of 1 Gbps.

Then, the network devices 110 and 21
The interfaces 0 and 310 recognize the port numbers # 1, # 2 and # 3 for QoS setting which are respectively set by the QoS function of the access network device 2000 and hold the settings, and the trunk lines L1, L2 and L3. Above, bandwidth reservation for the individual user terminals 100a, 200a, 300a accommodated in the port numbers # 1, # 2, # 3 to realize 100 Mbps communication is performed.

Although a metal cable has been described here, the network devices 110, 210 and 31 are used.
It is also possible to adopt single mode optical fiber (SMF) by changing the interface of 0.

Further, the access network device 2000
The port setting of the packages of the network devices 110, 210 and 310 is performed by the DIP switch provided in each device.

Band guarantee ON for each package
A / OFF switch is provided to set execution / non-execution of the bandwidth guarantee, and when not executed, it functions as a shared port.

Next, the operation of the network in the multi-layer structure having the above configuration will be described. Network device 11
As shown in FIG. 2, 0, 210, 310 identify the terminal by the MAC address with respect to the packet signal coming from each uplink, as shown in FIG. When it is determined that the packet signal is addressed to the terminal connected to the accommodated port, the packet signal is transferred to the corresponding port.

On the other hand, if not applicable, the packet signal is transferred to the downlink. Network device 310
When there is no downlink, or when the network on the downlink side is down, the packet signal is discarded as it is.

The network devices 110, 210,
In 310, port-based VLAN is applied to each port,
It accommodates a plurality of user terminals in units of ports. Therefore, for example, the user terminal 101 and the user terminal 102 accommodated in the network device 110 through different ports cannot recognize and monitor mutual communication.

The user terminal 301 accommodated in the network device 310 includes a network device 310, a trunk line L3, a network device 210, a trunk line L2, a network device 110 trunk line L1 and ONUs 1001-1.
Since the connection with the ISP is made through 004, the user terminal 101 accommodated in the network device 110, for example
Are treated as separate networks by the port-based VLAN and cannot recognize and monitor each other's communication.

As shown in FIG. 5, since the individual user terminal 100a accommodated in the network device 110 has the port number # 1 for QoS setting set in its port, the network device 110 and the access network device With the QoS function of 2000, a bandwidth for the individual user terminal 100a to realize 100 Mbps communication is reserved on the trunk line L1, and 10 bands are reserved through the trunk line La-2.
Performs 0 Mbps communication.

Similarly, in the individual user terminal 200a accommodated in the network device 210, the port number # 2 for QoS setting is set in its port, so that the network devices 110 and 210 and the access network device 2 are
With the QoS function of 000, bandwidths for the individual user terminals 200a to realize 100 Mbps communication are respectively reserved on the trunk lines L1 and L2, and 100 Mbps communication is performed through the trunk line La-3.

Further, since the port number # 3 for QoS setting is set to the port of the individual user terminal 300a accommodated in the network device 310, the QoS of the network devices 110, 210, 310 and the access network device 2000 is set. Depending on the function, the trunk lines L1 and L
2, the individual user terminal 300a on L3 is 100 Mbps
Bands for realizing communication are reserved, and 100 Mbps communication is performed through the trunk line La-4.

As described above, in the multi-layer structure network having the above-mentioned configuration, the network devices 110, 210, 310 for accommodating a plurality of user terminals at the ports provided with the port-based VLAN are provided on each floor. Are connected by large-capacity vertical trunk lines L1, L2, L3.

Therefore, according to the network in the multi-layer structure having the above-mentioned configuration, the VLA is provided between the user terminals.
Since it is accommodated in the port provided with N, the security between the user terminals can be assured by the high security between the ports. Therefore, it is possible to welcome different companies as tenants on one floor.

Since vertical wiring for each user is unnecessary,
Even existing multi-story buildings with insufficient wiring space can be easily adapted, and the network topology can be realized by star-type cascade connection. Can be built.

Furthermore, it is easy to change the capacity of the trunk line as necessary, and by this change, traffic congestion can be prevented and network performance can be improved.

Also, a plurality of ONUs 1001-10
04 and access network device 2000 to accommodate a plurality of ISPs and distribute the network devices 110, 210, 310 provided on each floor to the user terminals.
Can communicate with P.

Furthermore, the access network device 2
000 and network devices 110, 210, 310
Since a bandwidth reservation is made on the trunk lines L1, L2, and L3 for a specific user by providing a QoS function to the specific user, a predetermined communication speed can be guaranteed for the specific user. Differentiation of services can be achieved for each user.

The present invention is not limited to the above embodiment. In the above-described embodiment, the case where the invention is applied to the buildings BL1 and BL2 having three floors has been described as an example, but it is also possible to apply to the case where the floors have four or more floors. Needless to say, the present invention can be similarly implemented even if various modifications are made without departing from the scope of the present invention.

[0074]

As described above, according to the present invention, a network is constructed by cascading terminal accommodating devices accommodating a plurality of terminal devices, and a VLAN is used as an interface for accommodating the terminal devices of the terminal accommodating devices. I am giving it.

Therefore, according to the present invention, since it is constructed by the cascade connection, it is possible to easily adapt to an existing multi-story building in which the wiring space is not sufficiently secured, and between the terminal devices. Since each is accommodated in an interface provided with a VLAN, the high security between the interfaces can guarantee the security and bandwidth between the terminal devices, and as a result, it is possible to welcome different companies as tenants on one floor. It is possible to provide a network in a multi-layer structure.

Further, in the present invention, the terminal accommodating devices accommodating a plurality of terminal devices are cascade-connected to construct a network, and each terminal accommodating device and the connecting device are provided with the QoS function.

Therefore, according to the present invention, since it is constructed by the cascade connection, it is possible to easily adapt to a multi-story building which is already built and has insufficient wiring space, and the QoS function enables It is possible to provide a network in a multi-layer structure capable of guaranteeing a predetermined communication speed for a specific terminal device.

Further, according to the present invention, a plurality of network units are provided to accommodate a plurality of external lines, and these external lines are connected to the terminal accommodating devices connected in cascade by the line concentrator to construct a network. I have to.

Therefore, according to the present invention, since it is constructed by the cascade connection, it is possible to easily adapt to a multi-story building which is already built and does not have sufficient wiring space. Multiple ISPs through the line
It is possible to provide a network in a multi-layer structure that can easily cope with

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a network in a multi-layer structure according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of the intra-multilayer structure network shown in FIG.

FIG. 3 is a diagram showing a configuration of a network in a multi-layer structure according to a second embodiment of the present invention.

4 is a Q of the network in the multi-layer structure shown in FIG.
The figure for demonstrating the port setting for implement | achieving an oS function.

5 is a diagram for explaining the operation of the network in the multi-layer structure shown in FIG.

[Explanation of symbols]

100, 200, 300 ... Network devices 110, 210, 310 ... Network devices 101-10n, 201-20n, 301-30n ... User terminals 100a, 200a, 300a ... Individual user terminals 1000, 1001, 1002, 1003, 1004 ...
ONU 2000 ... Access network devices L1, L2, L3 ... Trunk lines La-1, La-2, La-3, La-4 ... Trunk lines BL1, BL2 ... Buildings

Continued front page    (72) Inventor Toshio Oikawa             2-3-1, Otemachi, Chiyoda-ku, Tokyo             Inside Telegraph and Telephone Corporation (72) Inventor Kenya Fuchigami             2-3-1, Otemachi, Chiyoda-ku, Tokyo             Inside Telegraph and Telephone Corporation F-term (reference) 5K033 AA08 AA09 DA06 DB18

Claims (3)

[Claims] 1. A network in a multi-layer structure, which is arranged in a building having a plurality of floors and accommodates a plurality of terminal devices, comprising a plurality of interfaces provided with a VLAN (Virtual Local Area Network), A terminal accommodating device accommodating the terminal device is provided in each of the different floors in the interface to be cascade-connected, and a connection device for connecting at least one of the terminal accommodating devices and an external line from an external network is provided. Characteristic multi-layer structure network. 2. A network in a multi-layer structure, which is arranged in a building composed of a plurality of floors and accommodates a plurality of terminal devices, comprising a plurality of interfaces for accommodating the terminal devices, and QoS (Quality of The terminal accommodating device having the (Service) function is provided on each of different floors and cascade-connected to communicate with at least one of the terminal accommodating devices using the QoS function, and the terminal accommodating device and an external line from an external network are connected. A network in a multi-layer structure, comprising a connection device for connection. 3. The connection device includes a plurality of network units that accommodate external lines, and a concentrator that connects these network units to at least one of the terminal accommodating devices. The network in a multi-layer structure according to claim 1 or claim 2.