DETECTION OF SPECIFIC BFD PATH FAILURES
First Claim
Patent Images
1. Logic encoded in one or more tangible media for execution and, when executed, operable to perform operations of:
- discovering a plurality of paths between an ingress node and an egress node;
constructing a path descriptor for each of the plurality of paths, wherein each path descriptor includes a plurality of node descriptors and each node descriptor includes a downstream IP address;
associating each path descriptor with a BFD discriminator that is locally-unique to the ingress node; and
for each of the plurality of paths, bootstrapping a BFD session with the LSP egress node, wherein the bootstrapping of the BFD session includes providing the egress node with the path descriptor and the associated BFD discriminator.
1 Assignment
0 Petitions
Accused Products
Abstract
Improved detection of specific BFD LSP path failures is herein disclosed. The improved detection described herein allow for faster fault isolation of a failure along a LSP path, which in turn may allow for faster repair of the failure. When opening a BFD session with a LSP egress node, the LSP ingress node provides the LSP egress node a path descriptor along with the BFD Discriminator. If a BFD failure is detected at the LSP egress node, the LSP egress node can signal an alarm that includes a full description of the path.
-
Citations
13 Claims
-
1. Logic encoded in one or more tangible media for execution and, when executed, operable to perform operations of:
-
discovering a plurality of paths between an ingress node and an egress node; constructing a path descriptor for each of the plurality of paths, wherein each path descriptor includes a plurality of node descriptors and each node descriptor includes a downstream IP address; associating each path descriptor with a BFD discriminator that is locally-unique to the ingress node; and for each of the plurality of paths, bootstrapping a BFD session with the LSP egress node, wherein the bootstrapping of the BFD session includes providing the egress node with the path descriptor and the associated BFD discriminator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
-
-
8. Logic encoded in one or more tangible media for execution and, when executed, operable to perform operations of:
-
bootstrapping a BFD session with an ingress node of a path, wherein the bootstrapping includes receiving, from the path'"'"'s ingress node, a path descriptor for the path and a BFD discriminator associated with the path descriptor, wherein the path descriptor includes a plurality of node descriptors and each node descriptor includes a downstream IP address; detecting a failure in the BFD session; and signaling an alarm to indicate the detected failure, wherein the alarm includes the path descriptor for the path and the associated BFD discriminator. - View Dependent Claims (10, 11, 12, 13)
-
Specification