Method and apparatus for constructing a repair path around a non-available component in a data communications network
AssigneeCisco Technology, Inc.
InventorsStewart Bryant, Ian Michael Shand
Life of this patent
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Abstract
A method of constructing a repair path around a non-available component in a data communications network having, as components, nodes having a network address and links there between comprises the step, performed at a participating node, of receiving from a notifying node in the network, a notification identifying the notifying node and components through which the notifying node can be reached. The method further comprises the step of deriving, from the notification, a network repair address for use in the event of non-availability of a component identified in the notification. The method further comprises the step of constructing a repair path for the repair address.
Claims21
A method of constructing a repair path around a non-available component in a data communications network having, as components, nodes having a network address and links there between, the method comprising the steps, performed at a participating node, of:
- receiving, from a notifying node in the network, a notification identifying the notifying node and components through which the notifying node can be reached;
- deriving, from the notification, a network repair address for use in the event of non-availability of a component identified in the notification;
- and
- constructing a repair path for the repair address.
A method of notifying components in a data communications network of notifying node reachability comprising the steps, performed at a notifying node, of:
- identifying in a notification_the notifying node and components through which the notifying node can be reached;
- identifying in the notification a network repair address for use in the event of non-availability of a component identified in the notification;
- and
- advertising the notification.
A computer readable medium comprising one or more sequences of instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of:
- receiving, from a notifying node in the network, a notification identifying the notifying node and components through which the notifying node can be reached;
- deriving, from the notification, a network repair address for use in the event of non-availability of a component identified in the notification;
- and
- constructing a repair path for the repair address.
An apparatus comprising:
- one or more processors;
- and
- a network interface communicatively coupled to the one or more processors and configured to communicate one or more packet flows among the one or more processors in a network and a computer readable medium comprising one or more sequences of instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of:
- receiving, from a notifying node in the network, a notification identifying the notifying node and components through which the notifying node can be reached;
- deriving, from the notification, a network repair address for use in the event of non-availability of a component identified in the notification;
- and
- constructing a repair path for the repair address.
An apparatus for constructing a repair path around a non-available component in a data communications network having, as components, nodes having a network address and links there between, the apparatus comprising:
- means for receiving, from a notifying node in the network, a notification identifying the notifying node and components through which the notifying node can be reached;
- means for deriving, from the notification, a network repair address for use in the event of non-availability of a component identified in the notification;
- and
- means for constructing a repair path for the repair address.
An apparatus for notifying components in a data communications network of notifying node reachability comprising:
- means for identifying the notifying node and components through which the notifying node can be reached in the notification;
- and
- means for identifying in the notification a network repair address for use in the event of non-availability of the component identified in the notification.
Dependencies are inferred from the claim text.