Prevent L2 Topology Links from Using Stale Baseline Data When a Neighbor Device Is Offline

NetBrain currently allows an L2 topology build to fall back to previously stored baseline data for a neighbor device when that device does not respond during a benchmark run, rather than reflecting that the device is offline or unreachable. This can result in the topology map retaining outdated links that no longer represent the actual network state. This enhancement would require current-run data to confirm a neighbor link before it is built or retained, and would skip topology construction for devices that did not respond in the current benchmark rather than defaulting to stale baseline data. Customers relying on topology maps for troubleshooting and network documentation would gain accurate, up-to-date visibility and avoid being misled by connections that no longer exist.