Patent ID: 7876755
Filing Date: 2011-01-25
Classification: H04L

Abstract:
1. A method for improving the quality of communication based on a label distribution protocol, comprising: calculating and setting up, by a local label switching router (LSR), a new optimized multicast label switching path (LSP) according to the label distribution protocol (LDP), sending a mapping request to an upstream node in the new optimized multicast LSP and starting a timer; determining whether a data stream sent from the upstream node in the new optimized multicast LSP is received or not; if the data stream is received, sending a withdraw request to the upstream node in a former optimized multicast LSP; and if the data stream sent from the upstream node in the new optimized multicast LSP is not received, when it is confirmed that the set threshold of the timer is reached, sending a withdraw request to the upstream node in the former optimized multicast LSP.