11) WHAT IS LLF?
Answer: LLF, or "Link Loss Fowarding", is a link failure detection feature available in routers on the Ethernet. In Ethernet routing, a link route is established for data packet passing, router-to-router through multiple routers, until the link reaches its intended destination. If a break should occur in the connection between two of the routers in the path, LLF detects the failure, and responds by disabling the connection between both routers connected to the break. Notification of the failure along the link is then passed through to all the devices in the path. Link recovery can then be initiated to reestablish a new link path, if an alternate route is available. i.e., LLF provides for a higher level of packet delivery reliability by detecting breaks in a link, and notifying the Ethernet routers of the failure.