Rerouting policies of diamond services

The rerouting policies for diamond services are described as follows:
Permanent 1+1 protection: Rerouting is triggered when either the working or protection LSP is interrupted.
Rerouting 1+1 protection: Rerouting is triggered only when both the working and protection LSPs are interrupted.
Flex P&R: In this rerouting policy, P indicates the number of protection times. R indicates the number of rerouting times. Before P is used up, rerouting is triggered when either the working or protection trail becomes faulty. After P is used up, rerouting is triggered only when both the working and protection LSPs become faulty. After R is used up, rerouting is stopped.
Non-rerouting 1+1 protection. No rerouting is triggered upon interruption of LSPs regardless of the working or protection LSP.
On the NMS, the configuration of electrical-layer ASON services depends on the rerouting policies. On the page for creating electrical-layer diamond services, the services can be configured by setting the Trigger Condition parameter in Routing Attributes . There are four types of trigger conditions:
1. Rerouting is triggered when any LSP is interrupted.
2. Rerouting is triggered when both LSPs are interrupted.
3. Rerouting is not triggered.
4. Rerouting is triggered based on the flex P&R protection policy.

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