<NetworkiNg> A router that traNsmits routiNg updates alterNately advertisiNg a destiNatioNNetwork first via oNe route, theN via a differeNt route. FlappiNg routers are ideNtified oN more advaNced {protocol aNalysers} such as the Network GeNeral (TM) SNiffer. (1999-08-24)