The SIKLU EtherHaul ExtendMM Back-up Link Feature License (SKU: SK-EXTMM-8010) enables the 8000 series ODU to establish a secondary Ethernet connection for enhanced network reliability. This license allows the device to monitor the primary link and automatically switch to a backup path if the main connection fails, ensuring continuous connectivity for critical business operations. Compatible with SIKLU ODU 8000 series hardware, this feature simplifies network redundancy without requiring additional physical cabling.