15-03-2018 дата публикации
Номер: US20180077076A1
Принадлежит:
Embodiments of the present invention provide a packet processing method and apparatus. After receiving a packet, a first network device processes the packet, and determines a first latency of the processed packet in a FIFO memory, where: the first latency is equal to a difference obtained by subtracting a second latency from a target latency, the second latency includes a third latency, and the third latency includes a time interval for processing the packet. 1. A method , comprising:receiving, by a first network device, a packet at a first time;processing, by the first network device, the packet to obtain a processed packet, and writing the processed packet into a buffer memory;reading, by the first network device, the processed packet from the buffer memory at a second time;determining, by the first network device at a time after the second time, a first latency of the processed packet in a first in first out (FIFO) memory, wherein the first latency is equal to a difference obtained by subtracting a second latency from a target latency, the target latency is equal to a period from the first time to a third time at which the processed packet is forwarded by the first network device through an egress port, the second latency is equal to a sum of a third latency and a fourth latency, the third latency is equal to a period from the first time to the second time, the fourth latency is a fixed latency, and the FIFO memory comprises multiple contiguous storage units;setting, by the first network device, a read pointer and/or a write pointer according to the determined first latency;writing, by the first network device according to the set write pointer, the processed packet into a storage unit in the FIFO memory, or reading, according to the set read pointer, the processed packet from a storage unit in the FIFO memory; andforwarding, by the first network device at the third time through the egress port, the processed packet that is read from the FIFO memory.2. The method ...
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