【多选题】
A 1、故障侧相邻节点通过APS 协议向相邻节点发出倒换请求 nA node adjacent to failure at one side sends switching request to another node adjacent to the failure at the other side through APS protocol.
B 2、和故障不相邻的节点不会发生倒换，只是工作在pass through 状态，进行业务的透传 nNode not adjacent to the failure does not switch but just works in pass through state to transparently transmit service.
C 3、当网络失效消失时，业务在WTR时间后将返回至原来路径 nWhen the network failure disappears, the service returns to original path after WTR time expires.
D 4、当网络失效消失时，立刻倒换到原工作路径 nWhen the network failure disappears, the service switches back to the original path immediately
查看更多
