Protection method and system for multi-domain network, and node
First Claim
1. A method of protection for a multi-domain network, wherein the multi-domain network comprises a first domain and a second domain, wherein the first domain and the second domain are interconnected by a first node and a second node;
- and the method comprising;
detecting a failure of a first link between the first node and the second node, disconnecting, by the second node, a first protection path;
connecting, by the second node, a first sub-path of the first protection path and a path within the second domain to construct a new protection path to bear a service which passes through the first domain and the second domain; and
sending, by the second node, a first failure monitoring message that carries first maintenance information to a third node, wherein;
the first maintenance information is the same as second maintenance information carried in a second failure monitoring message;
the second failure monitoring message is sent on the first protection path by the first node to the third node and is used to monitor a failure of the first protection path.
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Abstract
In the field of network communications, a protection method for a multi-domain network, wherein the multi-domain network comprises a first domain and a second domain and the two domains are interconnected by node B and C, includes: after failure of a first link between the two nodes is detected, node C disconnects a first protection path with the first domain, connects a first sub-path of the first protection path and a path that is within a second domain to form a new protection path for bearing a service across the multi-domain network, and sending, on the first sub-path, a first failure monitoring message that carries first maintenance information to node A, where the first maintenance information is the same as second maintenance information carried in a second failure monitoring message; the second failure monitoring message is a message that is sent on the first protection path by node B to node A and is used to monitor a failure of the first protection path.
20 Citations
16 Claims
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1. A method of protection for a multi-domain network, wherein the multi-domain network comprises a first domain and a second domain, wherein the first domain and the second domain are interconnected by a first node and a second node;
- and the method comprising;
detecting a failure of a first link between the first node and the second node, disconnecting, by the second node, a first protection path; connecting, by the second node, a first sub-path of the first protection path and a path within the second domain to construct a new protection path to bear a service which passes through the first domain and the second domain; and sending, by the second node, a first failure monitoring message that carries first maintenance information to a third node, wherein; the first maintenance information is the same as second maintenance information carried in a second failure monitoring message;
the second failure monitoring message is sent on the first protection path by the first node to the third node and is used to monitor a failure of the first protection path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- and the method comprising;
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9. An apparatus, comprising:
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a switch configured to; detect a failure of a first link between the first node and the second node, disconnect a first protection path; and connect a first sub-path of the first protection path and a path that is within a second domain to construct a new protection path to bear a service passes through at least two domains; and a transceiver configured to;
send a first failure monitoring message that carries first maintenance information to the third node, wherein;the first maintenance information is the same as second maintenance information carried in a second failure monitoring message; and
the second failure monitoring message is a message that is sent on the first protection path by the first node to the third node and is used to monitor a failure of the first protection path. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification