JP2000232447A - Management network and construction method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the reliability of an access network by connecting the access network to an optical wave transmission network via an LAN and sharing a management system communication band and a management message network existing between a network management system and an optical wave transmitter to construct a network of the access network. SOLUTION: The edge nodes 108 to 110 are connected to optical wave transmitters NE 102 to NE 104 by means of a common management system communication protocol. Thus, the access system communication networks 105 to 107 are remotely managed by a network management system(NMS) 100. At the same time, an IP can be connected to the nodes 108 to 110 and the NE 102 to NE 104 respectively via a data communication channel(DCC) that allocated to the overhead of an SDH. Then the nodes 108 to 110 are connected to the NE 101 to NE 104 via an Ethernet, and the NE 101 to NE 104 carry out the routing of Ethernet to/from DCC and DCC to/from DCC.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an access network management network construction method and management network, and more particularly to an access network management network construction method and management network for totally managing a carrier system and an access network.

[0002]

2. Description of the Related Art With respect to a conventional carrier-based management network, Japanese Patent Laid-Open Publication No. Hei 3-226035 describes a carrier-based management configuration as a "management network configuration method". In this publication, as shown in FIG. 13, a synchronous optical transmission network signal frame (SONET frame: Synchr
Multiple office buildings 6 with onous Optical Network Flame)
A plurality of optical transmission device groups 2 existing in each of A to C;
Synchronous optical transmission network composed of the optical station and a plurality of optical transmission device groups (SDH in Japan, SONET in the United States)
And an intra-station management information transfer network (L) for transferring management information connected between the optical transmission devices existing in the same station.
CN) and the SO embedded in the SONET frame.
SON configured using NET management data transfer area
In a management network configuration system having an ET management network (DCC network) and a management device for managing the entire network, management information transferred between the management device and the optical transmission device exists in a plurality of stations. It is described that one optical transmission device is provided in each station for a management information transfer unit that passes over the optical transmission device.

[0003] It is described that this configuration can reduce the transfer time of management information and the transfer processing time of change information in response to a network configuration change.

[0004]

However, this management device constitutes a carrier network,
There is no description about an access terminal such as a computer or a data processing device connected to the optical transmission device 2. Actually, in reality, it is not considered in spite of the necessity of comprehensive network management including not only carriers but also access terminals.

[0005] In such a carrier network, a carrier management network has been sufficiently studied and constructed in view of the magnitude of damage caused by network abnormalities, whereas access network management has been required. Is recent. In particular, with the explosive growth of Internet users, the increase in capacity and the purpose of use has led to a demand for highly reliable access networks.

In addition, a management network covering an extended and distributed access network is provided only for access network management.
The installation requires a great deal of cost, and a management network separated from a carrier system is not practical.

[0007] In order to solve the above problems, the present invention provides a method for performing remote management of an access network by sharing an existing carrier management network of a lightwave transmission network.

[0008]

SUMMARY OF THE INVENTION The present invention comprises a local area network (LAN) connected to a carrier lightwave transmission network and an edge node connected to a lightwave transmission device of the lightwave transmission network via a connection path. In the management network for managing the access network, the connection path between the edge node and the lightwave transmission device is provided, the access network and the lightwave transmission network are connected using the LAN, and the management of the lightwave transmission network is performed. Management bandwidth and network management system (NMS: Netwrk Management Sy) prepared in advance
stem) and the lightwave transmission device (NE: Network Element)
Network for management messages (hereinafter DCN: Da)
ta Communication Network) to form a management network for the access network.

The present invention also relates to an access network comprising a LAN (local area network) connected to a carrier-based lightwave transmission network and an edge node connected to a lightwave transmission device of the lightwave transmission network via a connection path. A data communication channel (DCC: Da) assigned to the overhead of the SDH optical signal as a connection path between the edge node and the lightwave transmission device.
ta communication channel) to connect the access network and the lightwave transmission network, and to provide a management communication band prepared in advance for the management of the lightwave transmission network, and a network management system (NMS) and the lightwave transmission device. (NE: Ne
A management network for the access network is constructed by sharing a management message network (hereinafter, DCN: Data Communication Network) between twork elements.

Further, the present invention manages a carrier lightwave transmission network and an access network forming a LAN (local area network) connected to an edge node connected to a plurality of lightwave transmission devices of the lightwave transmission network. In a management network, an access communication frame is allocated between the edge nodes for communication of a management message to connect a management network between the access networks, and a network for a management message between a network management system (NMS) and the edge node ( DCN: Data Communicati
on the network) to establish a management network for the access network.

Further, the present invention manages a carrier-based lightwave transmission network and an access network forming a LAN (local area network) connected to an edge node connected to a plurality of lightwave transmission devices of the lightwave transmission network. In the management network, a management network between the access networks is connected between the edge nodes using a dedicated external serial link and a router, and a network management system (N
A management network for the access network is constructed via a management message network (DCN: Data Communication Network) between the MS and the edge node.

Further, the present invention manages a carrier-based lightwave transmission network and an access network forming a LAN (local area network) connected to an edge node connected to a plurality of lightwave transmission devices of the lightwave transmission network. In the management network, when the management protocol of the lightwave transmission network and the management protocol of the access network are the same,
Management Message Network (DCN: Data Communi
cation Network) and network management system (N
MS) can be shared, and even when the communication protocol is different, an individual management message network (DCN: Data Communication Network) and a router management system (EMS: Element Management Systems)
The NMS enables integrated management of the lightwave transmission network and the access network by the NMS.

The present invention also relates to a carrier lightwave transmission network and an access network forming a LAN (local area network) connected to an edge node connected to a lightwave transmission device of the lightwave transmission network via a connection path. A connection path between the edge node and the lightwave transmission device, connecting the access network and the lightwave transmission network using the LAN, and preparing in advance for management of the lightwave transmission network. Management communication band and network management system (NMS: Netwrk Management Syst
em) and a network for management messages between the lightwave transmission device (NE: Network Element) (hereinafter DCN: Data
Communication network) to establish a management network for the access network.

The present invention also provides a communication network configured by connecting a carrier lightwave transmission network and an access network (hereinafter referred to as an access network) comprising data communication devices compatible with the ATM protocol and the IP protocol. An object of the present invention is to provide a method for constructing a management network of an access network using a management communication band of a system lightwave transmission network.

The present invention will be described with reference to FIGS. 1, 2 and 3.
(102), NE3 (103), and NE4 (104) are connected with a plurality of edge nodes (108, 109, 110) for bundling access data frames and accommodating them in a lightwave transmission network. Configure the contact points of the net. According to the present invention, in a case where a plurality of access networks are dispersedly connected to a carrier transmission network in such a form, (a) as shown in FIG.
9, 110) and lightwave transmission devices (102, 103, 10)
4) LAN as connection path (111, 112, 114)
Is used to connect the access network and the lightwave transmission network, a management message communication band (113) prepared in advance for the management of the lightwave transmission network, and a management message network between the NMS and the NE (hereinafter DCN: Data). Communication Net
work) and access networks (105, 106, 10
It is characterized in that the management network of 7) is constructed.

(B) As shown in FIG. 1, the edge node (1
08, 109, 110) and lightwave transmission devices (102, 10
3, 104), the access network and the lightwave transmission network are connected using a DCC (Data Communication Channel) allocated to the overhead of the SDH optical signal as a connection path (111, 112, 114). Communication band for management message prepared in advance for management (113)
And a network for management messages of access networks (105, 106, 107) by sharing a management message network (hereinafter, DCN: Data Communication Network) between the NMS and the NE.

(C) The edge node (10
8, 109, 110) for communication of management messages (202, 203, 204)
To connect a management network between the access networks (105, 106, 107), and a management message network (hereinafter, DCN: Data) between the NMS and the edge node.
It is characterized in that an access network management network is constructed via a communication network.

(D) The edge node (10
8, 109, 110) using an external serial link such as a dedicated line and a router to access networks (105, 106, 1).
07) is connected to a network for a management message between the NMS and the edge node (hereinafter, DC).
N: A communication network is constructed via a data communication network.

(E) As a construction method described in the above (c) and (d), when the management protocol of the lightwave transmission network and the management protocol of the access network are the same, DCN (Data
Communication Network) and NMS can be shared, but when the communication protocol is different, as shown in FIG.
CN: Data Communication Network) and EMS (Eleme)
The use of the NMS allows the integrated management of the lightwave transmission network and the access network to be performed by the NMS.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described.
This will be described in detail with reference to the drawings.

[Outline of the Present Invention] First, a conceptual explanation according to the present invention will be described with reference to FIGS. 1, 2 and 3.
In each of the figures, NE2 (10
2), NE3 (103), and NE4 (104) are connected to a plurality of edge nodes (108, 109, 110) for bundling access data frames and accommodating them in a lightwave transmission network, for carrier lightwave transmission. Constructs a contact point between the network and the access network.

The present invention has the following features (a) to (e) when a plurality of access networks are dispersedly connected to a carrier transmission network in such a form.

(A) As shown in FIG. 1, the edge nodes (108, 109, 110) and the lightwave transmission devices NE2 to NE4
(102, 103, 104) connecting paths (111, 11
2, 114), the access network and the lightwave transmission network are connected using the LAN, and the management message communication band (113) and the NM prepared in advance for the management of the lightwave transmission network.
S (Netwrk Management System)-NE (Network Elem
ent) network for management messages (hereinafter, DC
N: A data communication network is shared, and a management network for the access networks (105, 106, 107) is constructed.

(B) As shown in FIG. 1, the edge node (1
08, 109, 110) and lightwave transmission devices (102, 10
The access network and the lightwave transmission network are connected using a DCC (Data Communication Channel) assigned to the overhead of the SDH optical signal as the connection path (111, 112, 114) of the lightwave transmission network (3, 104). For management of communication, a communication band for management messages prepared in advance (11
3), and a management network for access networks (105, 106, 107) is constructed by sharing a management message network (hereinafter, DCN: Data Communication Network) between the NMS and the NE.

(C) The edge node (10
8, 109, 110) for communication of management messages, the access communication frames (202, 203, 20).
4) and assign the access networks (105, 106, 10
7) to connect a management network between the NMS and the edge node (hereinafter referred to as DC).
N: A communication network is constructed via a data communication network.

(D) The edge node (10
8, 109, 110) using an external serial link such as a dedicated line and a router to access networks (105, 10
6, 107) by connecting the management network.
Through a network for management messages between edge nodes (hereinafter, DCN: Data Communication Network),
A management network for an access network is constructed.

(E) As a construction method described in the above (c) and (d), when the management protocol of the lightwave transmission network and the management protocol of the access network are the same, DCN (Da
ta Communication Network) and NMS can be shared, but when the communication protocol is different, as shown in FIG. 3, an individual management message network (hereinafter, DCN: Data Communication Network) and EMS ( By using Element Management Systems, it is possible to perform integrated management of a lightwave transmission network and an access network in an NMS.

[First Embodiment] FIG. 1 is a schematic configuration diagram of a management network according to an embodiment of the present invention. The access communication network (105, 106, 107) has an edge node (108, 109, 110) installed to accommodate an access data frame, for example, an ATM cell or an IP frame in the lightwave transmission network. Each access communication network is connected to a lightwave transmission network via an edge node.

As an access communication network, a LAN (Loca
l Area Network) and SDH (Synchronous Digital Hi
erarchy: Data communication channel (DCC: Da) allocated to overhead of high-speed relay speed system
ta Communication Channel), the edge node (108, 109, 110) and the lightwave transmission device NE (10
2, 103, 104) are connected. In the lightwave transmission network, DCC or SDH using an arbitrary wavelength is used for communication of management messages between NEs.
Using DCC in the overhead, NMS (Network Ma
A data communication network (DCN: Data Communica) such as an IP (Internet Protocol) network is used for management message communication between a network management system (NE) and a network element (NE).
There is a management network that uses the Action Network. The lightwave transmission device NE (101) is a network emulator having no access network.

The feature (a) of the present invention is that the edge node (1
08, 109, 110) and the lightwave transmission device NE (102,
103, 104) using a common management communication protocol, the network management system NMS (10
0) enables remote management of the access network (105, 106, 107).

Edge nodes (108, 109, 110)
6 and 7 show examples of the management protocol configuration of the lightwave transmission device NE (102, 103, 104). The feature (a) of the invention is that the edge nodes (108, 109, 110)
In addition, the lightwave transmission device (1
02, 103, and 104), the protocol configuration shown in FIG. 7 is applied to enable IP connection via Ethernet.

FIG. 6 shows that the physical layer is Ethernet and the data link layer is CS as the OSI reference model layer.
MA / CD, network layer is IP, ICMP, A
A configuration diagram is shown using each protocol in which the RP is used, the transport layer is UDP, and the application layer is SNMP.

FIG. 7 shows that the physical layer is Ethernet and the data link layer is CS as the OSI reference model layer.
MA / CD, further, a data communication channel (DCC) is used across the physical layer and the data link layer, the remaining data link layer is LAPD, the network layer is IP, ICMP, ARP, and the transport layer is A configuration diagram using each protocol in which UDP is used and the application layer is SNMP is shown.

The feature (b) of the present invention is that the edge node (1
08, 109, 110) and the lightwave transmission device NE (102,
103, 104), the protocol configuration of FIG. 7 is applied to enable IP connection via DCC.

Next, an example of transfer of a management message will be described with reference to the drawings. FIG. 9 shows a management system connection configuration and a transfer path of a management message when the feature (a) of the invention is implemented. FIG. 9 corresponds to the network shown in FIG. Here, the edge nodes (108, 10
9, 110) are lightwave transmission devices (10
2, 103, 104). Lightwave transmission device (1
01, 102, 103, 104) are interconnected via a DCC. Lightwave transmission devices (101, 102, 10
3, 104) are Ethernet to / from DCC and DCC t
Perform o / from DCC routing. That is, the physical layer Ethernet of the edge node (108) is connected to the physical layer Ethernet of the lightwave transmission device NE (102), the data link layer is CSMA / CD, and the network layer is ISMA.
Lightwave transmission device NE through P, ICMP, ARP, LAPD and DCC of data link layer and physical layer
The DCC, LAPD, and network layer of (101) are connected to the network management system through IP, ICMP, and ARP, the data link layer is through CSMA / CD, and the physical layer Ethernet.

FIG. 9 shows a single network management protocol (SNMP) output from the edge node (108).
Is transmitted via the NE 102 and the NE 101 to the NMS 100 (901) and the management message output from the edge node (109) includes:
A route (902) propagated to the NMS 100 via the NE 103 is shown.

FIG. 10 shows the management system connection configuration and the transfer route of the management message when the feature (b) of the invention is implemented. FIG. 10 corresponds to the network shown in FIG. Here, the edge nodes (108, 109, 1)
10) is a lightwave transmission device (1) using DCC to / from DCC.
02, 103, and 104). The lightwave transmission devices (102, 103, 104) are interconnected via DCC to / from DCC. Lightwave transmission devices (102, 10
3, 104) are Ethernet to / from DCC and DCC t
Perform o / from DCC routing. In FIG.
A path (1001) through which the management message output from the edge node (108) is propagated to the NMS and a path (1002) through which the management message output from the edge node (109) is propagated to the NMS are shown.

As described above, the management message is transmitted by the OSI
A protocol stack on a path based on a hierarchical model such as a reference model or TCP / IP is used.

[Second Embodiment] FIG. 2 is a configuration diagram of a management network for explaining the features (c) and (d) of the present invention. The access communication network (105, 106, 107)
It has an edge node (108, 109, 110) installed to accommodate an access data frame, for example, an ATM cell or an IP frame in a lightwave transmission network. In addition, between the edge nodes (108, 109, 110), the connection paths 202, 203, 204 of the adjacent edge nodes in parallel with the connection path 113 between the optical transmission devices NE (101, 102, 103, 104). Through each access network 105,
106 and 107 are connected.

In the feature (c) of the present invention, the access communication frame is allocated as a management message band, and in the feature (d) of the present invention, the edge node (108, 109, 110) uses an external band such as a dedicated line. Connect the management network between the two.

The lightwave transmission network includes a DCC using an arbitrary wavelength or a DCC in an SDH overhead for management message communication between the optical transmission device NE and the optical transmission device NE.
For management message communication between NMS and NE,
There is a management network using a DCN such as an IP network. Therefore, any edge node (10
8, 110) to share the DCN and NMS (10
0) enables remote management of the access network (105, 106, 107).

FIG. 4 shows a configuration when the management network of FIG. 2 is logically described. Except for the DCN, the management network of the access network and the lightwave transmission network is separated. Although the light-wave transmission network of the carrier network and the access network are separated from each other in the configuration, the network management system NM
S100 manages the entire network through the DCN.

The feature (c) of the invention is that the edge node (10
8, 109, 110) and lightwave transmission devices (102, 10
3, 104) is shown in FIG. 7 described above. The feature (c) of the invention is that the edge node pair (108
And 109, 109 and 110, and 110 and 108) are regarded as point-to-point circuits (DCC) in the access communication frame allocated for communication of the management message, and LAPD is used for layer 2. This enables IP connection between edge nodes.

The feature (d) of the invention is that the edge node pairs (108 and 109, 109 and 110, 110 and 108)
This is a case where an IP connection is made using a router and a WAN using an external band for management message communication between them.

FIG. 11 shows an example of a management system connection configuration when the features (c) and (d) of the invention are implemented. FIG.
1 corresponds to the network shown in FIG. In FIG. 11, the edge nodes 108 and 110 connect to the NMS via Ethernet.
It is connected by implementing the routing of to / from DCC.
In addition, each edge node 108, 109, 110 is a DCC.
They are connected by implementing the routing of to / from DCC. Further, the optical transmission devices NE (101, 102, 103,
Between 104), DCC to / from DCC routing is performed and connected to adjacent mutual NEs.

[Third Embodiment] FIG. 3 is a configuration diagram of a management network for explaining the feature (e) of the present invention. The feature (e) of the invention is based on the premise that the management protocol of the ATM / IP network (105, 106, 107) as the access communication network is different from the management protocol of the carrier lightwave transmission network.

In FIG. 3, the carrier lightwave transmission device N
E (101, 103) is DCN (IS-IS / ES-I
S) is connected to the NMS (Q3 over OSI) 100 through the EMS1 (TL1 over OSI) 200, and the edge nodes (108, 110) are connected to the NMS (Q3 over OSI) 201 through the EMS2 (SNMP over UDP / IP) 201 by the DCN (IP). ) 100. In this case, the DCN is also separated as shown in FIG.

FIG. 5 shows a configuration when the management network of FIG. 3 is logically described. The access network including the DCN and the management network of the lightwave transmission network are separated. As shown in FIG. 5, the carrier lightwave transmission device NE (101, 102, 103,
104) are mutually connected in a ring shape by a lightwave connection path 103, and the lightwave transmission devices NE (101, 103) are connected to the DCN (I
EMS1 (TL1 over TL1 over S-IS / ES-IS)
NMS (Q3 over OSI) 1 through OSI) 200
00 is connected. In addition, the edge node (108,
109, 110) are access network connection paths 202, 203,
204 and adjacent to each other, the edge node (10
EMS2 (SNM) via DCN (IP)
NMS (Q3 ov) through the P over UDP / IP 201
er OSI) 100. Where EMS
Is an Element Management System
m). In this case, as shown in FIG. 5, the DCN is also separated.

FIG. 7 shows an example of the management protocol configuration of the nodes in the access network (105, 106, 107).
FIG. 8 shows an example of a management protocol configuration of the lightwave transmission devices (102, 103, 104).

FIG. 8 shows that the physical layer is Ethernet and the data link layer is CS as the OSI reference model layer.
MA / CD, LLC Type-1 and data communication channel (DCC) across physical layer and data link layer
And the remaining data link layer is LAPD,
Further, the network layer is set to CLNP, ES-ES, IS-
FIG. 3 shows a configuration diagram using each protocol of IS, TP4 for the transport layer, COSP for the session layer, COPP for the presentation layer, and ACSE and TL1ASE for the application layer.

As an embodiment of the present invention, the access network (1
05, 106, 107) are SNMP (Simple Network M)
anagement Protocol) over UDP / IP is adopted as the management protocol, and the lightwave transmission network is TL1 over O
The company has adopted SI. In this case, the access network (1
05, 106, and 107) include an IP network as a DCN in the configuration as shown in FIG.
The configuration includes an SI (IS-IS, ES-IS) network.

An EMS (Element Management System) that monitors and manages routers based on differences in management protocols
And access networks (105, 106, 107)
EMS2 with SNMP over UDP / IP
(201) is connected to EMS1 (200) having TL1 over OSI for the lightwave transmission network. The EMS1 (200) and the EMS2 (201) are fused by the upper NMS (100) using a common management protocol. In the present invention, Q3 is an example of a common management protocol.

FIG. 12 shows an example of a management system connection configuration when the feature (e) of the invention is implemented. FIG. 12 shows FIG.
Corresponding to the network shown in FIG.

In FIG. 12, the edge nodes 108, 1
10 is connected to the EMS 2 by performing Ethernet to / from DCC routing. In addition, each edge node 10
8, 109 and 110 perform DCC to / from DCC routing and are connected by connection paths 202, 203 and 204. Further, the optical transmission device NE (101, 102,
103, 104), DCC to / from DCC routing is performed and connected to adjacent mutual NEs.

[0055]

According to the present invention, an access communication node shares a management message communication band for a carrier communication node, and remote management from a network management system (NMS) becomes possible.

Further, according to the present invention, total network management is possible, and management can be performed by organic coupling without separating the access communication node and the carrier communication node. In the event of a failure, interconnection can be made using another connection path.

Further, the operating system (Ops) of the access network and the carrier transmission network can be integrated,
By finding a quick solution to the traffic congestion state, it is possible to quickly avoid and recover from a failure in the network.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a network management system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a network management system according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of a network management system according to an embodiment of the present invention.

FIG. 4 is a configuration diagram of a network management system according to an embodiment of the present invention.

FIG. 5 is a configuration diagram of a network management system according to an embodiment of the present invention.

FIG. 6 is an example of a protocol of the network management system according to the embodiment of the present invention.

FIG. 7 is an example of a protocol of the network management system according to the embodiment of the present invention.

FIG. 8 is an example of a protocol of the network management system according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram of an operation of the network management system according to the embodiment of the present invention.

FIG. 10 is an explanatory diagram of an operation of the network management system according to the embodiment of the present invention.

FIG. 11 is an explanatory diagram of an operation of the network management system according to the embodiment of the present invention.

FIG. 12 is an explanatory diagram of an operation of the network management system according to the embodiment of the present invention.

FIG. 13 is a block diagram of a conventional network management system.

[Explanation of symbols]

Reference Signs List 100 network management system (NMS) 101 network element (network protocol converter) NE 102, 103, 104 NE 105, 106, 107 access communication network 108, 109, 110 NE node 111, 112, 114 connection path 113 LAN

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI FI Theme Court II (Reference) H04L 12/66 (72) Inventor Shoichiro Nakai 7-1-1 Shiba 5-chome, Minato-ku, Tokyo NEC Corporation F term (reference) 5K002 AA05 BA04 BA05 DA05 DA11 DA12 EA05 FA01 5K030 HA10 HC14 HD06 JL03 JL10 MA01 5K033 BA08 DA05 DB22 9A001 CC06 CC08 JJ12 KK56 LL09

Claims (8)

[Claims] 1. A local area network (LAN) connected to a carrier-based lightwave transmission network and an edge node connected to a lightwave transmission device of the lightwave transmission network via a connection path.
In a management network that manages an access network configured as described above, a connection path between the edge node and the lightwave transmission device is provided,
The access network and the lightwave transmission network are connected using the LAN, and a management communication band and a network management system (NMS: Ne) prepared in advance for the management of the lightwave transmission network.
twrk Management System) and the lightwave transmission device (NE:
A management network, wherein a management message network (hereinafter, DCN: Data Communication Network) is shared between network elements to construct a management network for the access network. 2. The management network according to claim 1, wherein the access network constituting the LAN is an asynchronous communication mode (ATM) protocol or the Internet (IP).
An access network comprising data communication devices corresponding to a protocol, wherein a management communication band of the carrier lightwave transmission network uses a management message communication band to construct a management network of the access network. Management network. 3. A local area network (LAN) connected to a carrier lightwave transmission network and an edge node connected to the lightwave transmission device of the lightwave transmission network via a connection path.
In a management network that manages an access network configured as described above, as a connection path between the edge node and the lightwave transmission device,
Data Communication Channel (DCC) assigned to the overhead of Synchronous Digital Mechanism (SDH) optical signals
Communication Channel) to connect the access network and the lightwave transmission network, and to manage the lightwave transmission network,
A management communication band prepared in advance, a network management system (NMS) and the lightwave transmission device (NE: Networ)
k Element), and a management network for the access network is constructed by sharing a management message network (hereinafter, DCN: Data Communication Network). 4. The management network according to claim 3, wherein the access network constituting the LAN is an asynchronous communication mode (ATM) protocol or the Internet (IP).
An access network comprising data communication devices corresponding to a protocol, wherein a management communication band of the carrier lightwave transmission network uses a management message communication band to construct a management network of the access network. Management network. 5. A management network for managing a carrier lightwave transmission network and an access network forming a LAN (local area network) connected to an edge node connected to a plurality of lightwave transmission devices of the lightwave transmission network, An access communication frame is allocated between the edge nodes for communication of a management message to connect the management network between the access networks, and a management message network (DCN: Data Communication) between a network management system (NMS) and the edge node. A management network for the access network via a network. 6. A management network for managing a carrier-based lightwave transmission network and an access network constituting a LAN (local area network) connected to an edge node connected to a plurality of lightwave transmission devices of the lightwave transmission network, A management network between the access networks is connected between the edge nodes using a dedicated external serial link and a router, and a management message network (DC) between a network management system (NMS) and the edge nodes is connected.
N: a management network, wherein a management network for the access network is constructed via a data communication network. 7. A management network for managing a carrier-based lightwave transmission network and an access network constituting a LAN (local area network) connected to an edge node connected to a plurality of lightwave transmission devices of the lightwave transmission network, If the management protocol of the lightwave transmission network and the management protocol of the access network are the same, a management message network (DCN: Data Communication Network) is used.
k) and a network management system (NMS) can be shared, and even if the communication protocol is different, an individual management message network (DCN: Da
A management network, wherein the NMS enables integrated management of the lightwave transmission network and the access network by using a communication network (ta Communication Network) and a router management system (EMS). 8. A local area network (LAN) connected to a carrier lightwave transmission network and an edge node connected to a lightwave transmission device of the lightwave transmission network via a connection path.
In a management network construction method for managing an access network configured as described above, providing a connection path between the edge node and the lightwave transmission device,
The access network and the lightwave transmission network are connected using the LAN, and a management communication band and a network management system (NMS: Ne) prepared in advance for the management of the lightwave transmission network.
twrk Management System) and the lightwave transmission device (NE:
A management network construction method, wherein a management message network (hereinafter, DCN: Data Communication Network) between network elements is shared to construct a management network for the access network.