| 摘要 |
<p>The present invention relates to communications, discloses a method for transmitting a clock packet through a tunnel, and discloses a network node, and a communication system. The method includes: encapsulating a tunnel ingress clock packet received at an ingress of a tunnel in an encapsulation mode corresponding to the tunnel, and performing clock correction for the encapsulated clock packet; and sending the corrected clock packet to an egress of the tunnel. The network node for processing a clock packet includes an encapsulating module and a sending module. The communication system includes the network node for processing a clock packet, and further includes an intra-tunnel network node and a tunnel egress network node. According to the present invention, a clock packet is re-encapsulated and transmitted through a tunnel. In the subsequent process of transmitting the clock packet transparently, the node itself serves as a clock reference point, and all network nodes do not need to synchronize time absolutely. Thereby, when the clock packet is transmitted through the tunnel, clock synchronization is implemented, and the precision of clock synchronization is higher.</p> |
