However, there is nothing that requires that the network devices in serial cluster 145 to response to auto-discovery probe messages from network devices in serial cluster 155 or anywhere else.
As an example of asymmetrical use of auto-discovery mechanisms, serial cluster 155 May be configured to response to auto-discovery probe messages from any of the network devices in serial cluster 145.
3
基本上,一个节点向磁盘发送心跳消息,另一个节点会探测到它。
Basically, one node will heartbeat to the disk and the other will detect it.