Force 425 firmware 5.3 causing VPLS tunnel flapping

[Jacob_Turner]

Read this article and then you can decide what to set it to based on how your network is configured:

Why Control Word Must Be Used in MPLS/VPLS

ePMP will not fully support VPLS without Control Word In modern networking—especially with performance-optimized platforms like ePMP radios that use hardware offloading to reduce OS workload—correct packet parsing is critical. Devices such as Network Soft Switches (NSS) must correctly interpret VPLS and MPLS pseudowire traffic. If the Control Word (CW) is not used, packet headers may be misinterpreted, leading to ambiguities, packet drops, or incorrect behavior. This is not just a theoretical c…