Label switched path network failure detection and traffic control

摘要

A method for providing ingress fault protection in a label switched network, comprising sending data traffic from a source node to a first label switched path (LSP) via a first ingress node, detecting a first fault using a first fault detection link between the source node and the first ingress node, sending the data traffic from the source node to a second LSP via a second ingress node in response to detecting the first fault, detecting a second fault using a second fault detection link between the first ingress node and the second ingress node, and merging the data traffic from the second LSP into the first LSP at a next-hop node of the first ingress node, wherein the data traffic is no longer sent to the first LSP via the first ingress node after the first fault.

主权项

1. A method for providing ingress fault protection in a label switched network, the method comprises:
sending data traffic from a source node to a first label switched path (LSP) via a first ingress node; detecting, by a second ingress node and the source node, a first fault of the first ingress node using a first fault detection link between the source node and the first ingress node; sending the data traffic from the source node to the second ingress node in response to detecting the first fault by the source node; detecting, by the second ingress node, a second fault using a second fault detection link between the first ingress node and the second ingress node; and importing the data traffic into a second LSP in response to detecting that the first fault and the second fault exist, wherein importing the data traffic into the second LSP merges the data traffic from the second LSP into the first LSP at a next-hop node of the first ingress node, and wherein the data traffic is no longer sent to the first LSP via the first ingress node after the first fault.