Method of centralized ethernet network shutdown
First Claim
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1. ) A method of shutting down at least some network elements of an Ethernet network, comprising the steps of:
- receiving (20), in a network element (2-9) a first shutdown binary signal, a first value of which commands to shutdown a network element, and the second value of which authorizes to restart a network element;
detecting (20) the value of said shutdown signal;
then propagating a shutdown to a downward network element by generating a second shutdown signal, if the first signal has its first value;
characterized in that, for commanding a shutdown of at least some functions of said network element, it further comprises the steps of;
assigning flags respectively to the ports of said network element, the value of a flag assigned to a port authorizing or forbidding the shutdown of this port, and the propagation of the shutdown via this port,checking flags that have been previously assigned and then executing the shutting down (22) and the propagation of the shutdown only for each port that has been assigned a flag authorizing the shutdown of this port, when this network element detects the presence of the first value of said first shutdown signal.
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Abstract
A method is disclosed of centralized Power over Ethernet network shutdown, which comprises the steps of:
- sending (19) from a centralized management unit (1, 2) through said network a shutdown binary signal, a first value of which commands a shutdown, and the second value of which authorizes a restart;
- detecting (20) the value of said shutdown signal, in a network element;
- then shutting down (22, 24) at least some of the functions of said network element and propagating the shutdown signal, if the signal has its first value, or authorizing all the functions of said network element if the signal has its second value.
The shutdown signal can be constituted by a Power over Ethernet voltage usually used for remotely supplying power to network elements that can be remotely powered. The presence of a Power over Ethernet voltage commands a shutdown, and commands the propagation of a shutdown signal; whereas the absence of the Power over Ethernet voltage authorizes all the functions of said network element.
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Citations
20 Claims
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1. ) A method of shutting down at least some network elements of an Ethernet network, comprising the steps of:
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receiving (20), in a network element (2-9) a first shutdown binary signal, a first value of which commands to shutdown a network element, and the second value of which authorizes to restart a network element; detecting (20) the value of said shutdown signal; then propagating a shutdown to a downward network element by generating a second shutdown signal, if the first signal has its first value; characterized in that, for commanding a shutdown of at least some functions of said network element, it further comprises the steps of; assigning flags respectively to the ports of said network element, the value of a flag assigned to a port authorizing or forbidding the shutdown of this port, and the propagation of the shutdown via this port, checking flags that have been previously assigned and then executing the shutting down (22) and the propagation of the shutdown only for each port that has been assigned a flag authorizing the shutdown of this port, when this network element detects the presence of the first value of said first shutdown signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. ) A network element (37, 62) comprising:
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means (41;
61) for receiving, through an Ethernet network, a first binary shutdown signal,means (39;
59) for detecting the value of said first shutdown signal,means (39, 42;
59 42) for propagating the shutdown to a downward network element by generating a second shutdown signal, if the first shutdown signal has its first value;characterized in that it further comprises means (39, 42;
59 42) for shutting down at least some functions of said network element, which comprise;means (42) for checking flags that have been previously assigned respectively to ports of said network element, the value of a flag authorizing or forbidding the shutdown of this port, and the propagation of the shutdown via this port, and means (42) for executing the shutting down and the propagation of the shutdown only for each port that has been assigned a flag authorizing the shutdown of this port, when said network element detects the presence of the first value of said shutdown signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification