在分布式系统中,当多个设备共享资源或多路复用某一信道时,常会发生端口或信道访问冲突(或争用)。通常可用仲裁机构来解决冲突。例如,发现冲突后便发出阻塞信号,然后令各设备随机延迟一段时间后访问信道或共享资源。也可采取某种优先仲裁准则,如按设备地址的各比特的优先等级仲裁等。更高级 In a distributed system, port or channel access conflicts (or contention) often occur when multiple devices share resources or multiplex a channel. Arbitration agencies are usually available to resolve conflicts. For example, a congestion signal is detected after a collision and then devices are randomly delayed for a period of time to access the channel or to share resources. Some priority arbitration rules may also be adopted, such as priority arbitration for each bit of the device address. More Advanced