试题详情
- 单项选择题How is UPSR and BLSR traffic rerouted during a protection switch when a complete fiber cable cut occurs?（）
A、Traffic is switched from the first node receiving the AIS indication.
B、Traffic is switched from the far side of the failure, allowing handshaking to occur.
C、UPSR traffic is switched from the terminating node, BLSR traffic is rerouted from the originating node in the ring.
D、UPSR traffic is switched from the terminating node, circuit by circuit. BLSR traffic is rerouted from the last reachable node in the ring.
- D
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