JP2012105004A5

JP2012105004A5 -

Info

Publication number: JP2012105004A5
Application number: JP2010251011A
Authority: JP
Filing date: 2010-11-09
Publication date: 2012-10-25
Anticipated expiration: 2030-11-09

Claims

A network concentrator that operates based on power supplied from at least one of a main power supply or an auxiliary power supply via a power supply circuit,
At least one first lower port to which the lower level network device is connected;
A first physical layer processing unit having the at least one first lower port;
A second subordinate port to which another subordinate network device is connected and capable of supplying power to the other subordinate network device;
An upper port to which an upper network device is connected;
A second physical layer processing unit having the second lower port and the upper port;
A switch unit configured to connect the first physical layer processing and the second physical layer processing unit, and to be able to control a communication path between any of the ports;
The second physical layer processing unit is
During a power outage of the main power supply, so as not via the switch unit sets a communication path between said upper port and said second lower port,
The power supply circuit is
At the time of the power failure, the power source is switched from the main power source to the auxiliary power source, and control is performed so that the power supply from the auxiliary power source to the first physical layer processing unit and the switch unit is stopped,
When the power failure is restored, the power supply source is switched from the auxiliary power source to the main power source, and control is performed so as to release the stop of the power supply.
Network concentrator.

The network concentrator according to claim 1, wherein the auxiliary power supply is an auxiliary power supply outside or inside the network concentrator.

The network concentrator according to claim 1, wherein the auxiliary power supply is the upper port that is supplied with power through the upper network device.

The network concentrator according to claim 3, wherein the second physical layer processing unit relays a part of the power from the auxiliary power source to the second lower port.

The network concentrator according to any one of claims 1 to 4 , wherein when the power failure is restored, the second physical layer processing unit cancels the setting of the communication path.

A power control method for a network concentrator that operates based on power supplied from at least one of a main power supply or an auxiliary power supply via a power supply circuit ,
The network concentrator is connected to a first physical layer processing unit including at least one first lower port to which a lower network device is connected, an upper port to which the upper network device is connected, and another lower network device. And a second physical layer processing unit including a second lower port capable of supplying power to the other lower network device to a layer higher than the first physical layer processing unit and the second physical layer processing unit. The switch part to which it belongs,
A process of setting a communication path between the upper port and the second port so as not to go through the switch unit at the time of a power failure of the main power supply;
A process of controlling the power supply source from the main power supply to the auxiliary power supply to stop the power supply from the auxiliary power supply to the first physical layer processing unit and the switch unit at the time of the power failure and,
A process of switching the power supply source from the auxiliary power source to the main power source and releasing the stop of the power supply when the power failure is restored ,
Power control method.

The power control method according to claim 6, wherein the auxiliary power source is an auxiliary power source outside or inside the network line concentrator.

The power control method according to claim 6, wherein the auxiliary power source is the upper port that is fed through the upper network device.

The power control method according to claim 8, wherein a part of power from the auxiliary power supply is relayed to the second lower port during the power failure.

If the power failure of the main power is restored, to release the setting of the previous SL communication path, the power control method according to any one of claims 6-9.