This attribute specifies if the EMS/MEs are allowed and/or required to reroute this SNC if there is a failure on this SNC, periodically to optimize the routes, of for any other reason. It is an EMS/ME implementation whether this is done using network routing protocols or if the EMS/MEs detect the failure and take appropriate action to attempt to fix the SNC.
The NO value means that the EMS/MEs are not allowed to reroute the SNC.
The YES value means that the EMS/MEs are allowed to reroute the SNC and are required to attempt to reroute it upon failure.
The NA value is used when the NMS does not want to specify the exact EMS behaviour. In this case it is left up to the EMS to decide whether rerouting will be provided. It is also used if the EMS/MEs are allowed to reroute the SNC but not required to attempt to reroute it upon failure.

Readable by NMS? No
Writeable by NMS? Yes
Invariant? Yes
