Method and node device for negotiating associated channel capability between nodes

摘要

The present invention includes: receiving a Path message that is sent by an upstream node and carries an ACH of the upstream node; creating a new Path message and sending the new Path message to a downstream node, where the new Path message includes the ACH capability of the upstream node; receiving a Resv message that is sent by the downstream node and carries information about an ACH capability of the downstream node; and creating a new Resv message and sending the new Resv message to the upstream node, where the new Resv message includes the ACH of the downstream node. In the embodiments of the present invention, the ACH can be negotiated between nodes on an LSP so that a node on the LSP can know an ACH of another node, which avoids loss or erroneous forwarding of a special packet transmitted on an ACH.

主权项

1. A method for negotiating an Associated Channel (ACH) information between nodes, the method comprising:
receiving, by a current node, a Path message that is sent by an upstream node and carries an ACH information of the upstream node; creating, by the current node, a new Path message and sending the new Path message to a downstream node, wherein the new Path message comprises the ACH information of the upstream node and an ACH information of the current node; receiving, by the current node, a Reserve (Resv) message that is sent by the downstream node and carries information about an ACH information of the downstream node; creating, by the current node, a new Resv message and sending the new Resv message to the upstream node, wherein the new Resv message comprises the ACH information of the downstream node and the ACH information of the current node; wherein the ACH information of the upstream node comprises: an information of supporting a reserved label, an information of supporting an ACH, an information of supporting an ACH type and an information of supporting an Administration and Maintenance (OAM) tool: wherein the ACH information of the current node comprises: an information of supporting a reserved label, an information of supporting an ACH, an information of supporting an ACH type and an information of supporting an OAM tool; and wherein the ACH information of the downstream node comprises: an information of supporting a reserved label, an information of supporting an ACH, an information of supporting an ACH type and an information of supporting an OAM tool.