JP2005340983A5

JP2005340983A5 -

Info

Publication number: JP2005340983A5
Application number: JP2004154079A
Authority: JP
Filing date: 2004-05-25
Publication date: 2007-03-29

Claims

An input interface for receiving packets, an output interface for transmitting packets,
Means for analyzing a header of a packet received by the input interface, a switch unit for switching the connection between the input interface and the output interface inside the device,
A database that stores an identifier for distinguishing between upstream and downstream determined by the topology information of the network to which the own device belongs, an address for distribution to a node device other than the own device, and information stored in the database are read. Means and
A packet relay device, wherein an address corresponding to an identifier indicating the downstream is distributed to the node device belonging to the downstream side.

An input processor having a plurality of input ports for receiving data packets;
An output processing unit having a plurality of output ports and transmitting the received data packet;
A switch unit for switching the route of the data packet inside the device;
A path control unit, a topology information processing unit that manages topology information that is a network connection form, and an identification information control unit that manages identification information including a network address,
The input processing unit is configured to extract transfer information included in header information of the received data packet, to notify the route control unit of the extracted transfer information, and to the switch unit the received data packet. Means for sending,
The path control unit sends out from the destination of the data packet based on the means for calculating the destination reachable from the own device, the means for holding the destination information, and the header information and destination information of the data packet. Means for determining an interface; means for notifying the interface information to the switch unit;
The switch unit has means for switching the connection between the input port and the output port based on the switch switching information,
The topology information processing unit includes means for collecting topology information of the own device and a network to which the device is connected, means for recognizing a connection state and a network configuration between the device and surrounding devices based on the topology information, Means for holding the connection information and the hierarchy information;
The packet relay device, wherein the identification information control unit includes means for collecting identification information relating to the own device and a relay device and a network to which the device is connected, and means for holding the collected identification information.

The packet relay device according to claim 2,
The topology information processing unit has means for recognizing mutual dependency between networks, between devices, or between interfaces.

The packet relay device according to claim 2,
The topology information processing unit includes means for determining or determining a relative hierarchical relationship between a plurality of relay devices constituting a network.

The packet relay device according to claim 2,
The packet relay device, wherein the identification information processing unit includes means for determining or determining network configuration information including address information that can be used in a network managed by the device and devices belonging to the network.

The packet relay device according to claim 2,
The identification information processing unit has means for notifying a network under the management of its own device and devices belonging to the network of network configuration information including address information usable for the network and the device. 3. The packet relay device according to claim 1 or 2.

The packet relay device according to claim 2,
The topology information processing unit, means for mutually reporting the topology information of the previous period between the devices,
And a means for holding the topology information received from another relay apparatus in the topology information processing unit.

The packet relay device according to claim 2,
The packet information relay apparatus according to claim 1, wherein the identification information processing unit includes means for updating a use status of the previous period identification information held in the apparatus based on a change in the network configuration (topology).

An input processing unit including a plurality of input ports, an output processing unit including a plurality of output ports, the input port and the output port are connected to generate a communication path inside the apparatus, and the previous input port and output A switch unit that switches correspondence with a port, a path control unit, a topology information processing unit that manages topology information that is a network connection form, and an identification information control unit that manages identification information including a network address In a network comprising one or a plurality of packet relay devices comprising one or both of the above, and having a hierarchical structure,
A network configuration method for setting an identifier for communication via a network and network configuration information for one or a plurality of devices constituting a network and one or a plurality of interfaces provided in each device. And
When the hierarchical configuration is expressed as upstream on the core network side and downstream on the user terminal side, the relay device is connected to the relay device connected to the device through an interface on the downstream side of the device. Determining the identification information available in the relay device;
Notifying the determined identification information; and notifying the downstream relay device of the identification information that can be distributed to the downstream relay device.
The downstream relay device, based on the notified identification information, to set identification information in the interface of its own device, determine an address that can be used on the downstream side, and to notify when necessary, A network configuration method comprising:

A network composed of multiple subnets,
The subnet includes at least one packet relay device,
The packet relay device connects an input processing unit including a plurality of input ports, an output processing unit including a plurality of output ports, the input port and the output port, and generates a communication path inside the device. A switch unit for switching correspondence between the input port and the output port in the previous period, and a path control unit,
Furthermore, at least one of a topology information processing unit that manages topology information that is a network connection form, and an identification information control unit that manages identification information including a network address,
Each of the relay devices has means for holding information on a network managed by the own device in the identification information control unit, the own device and a network to which the own device belongs, a device and a network that manages the own device, and the own device Dependencies on managed devices and networks,
And a means for holding a connection status of each device in the topology information processing unit.