Patent ID: 7852770

Claim:
A method for interaction among resource reservation protocol (RSVP) nodes, comprising: determining, by a first node, whether a neighboring node has enabled a RSVP HELLO mechanism when the first node needs to disable the first node's RSVP HELLO mechanism; sending, by the first node, a first message to a neighboring node with the RSVP HELLO mechanism enabled, wherein the first message is a HELLO Acknowledgment (ACK) message carrying a Source(Src)_Instance field filled with a predetermined value; receiving, by the neighboring node, the first message sent from the first node; setting, by the neighboring node, a sign in the neighboring node indicating that the first node has disabled the HELLO mechanism, wherein the sign is a locally stored value of the Src_Instance field corresponding to the first node and the locally stored value equals the predetermined value; judging, by the neighboring node, whether the locally stored value of the Src_Instance field corresponding to the first node equals the predetermined value when the neighboring node has not received a HELLO message from the first node for a predetermined time period; maintaining, by the neighboring node, a label switching path passing through the first node in a normal state according to the disabled status of the HELLO mechanism of the first node if the Src_Instance field value equals the predetermined value; and removing, by the neighboring node, the label switching path passing through the first node if the Src_Instance field value does not equal the predetermined value.