IS-IS Basic

ISIS and OSPF IGP link state protocol Link State database describes it’s neighbors and links connected to it PN pseudo node, extra router, convert Ehernet segment to star network with 0 cost DIS Designated IS (DIS), which is responsible for creating and distributing details of router PN LSP – Link …

BGP Basic

Border Gateway Protocol AS – Routers run by an operator under a single administration IGP – use common metrics to determine how to route packets within the AS BGP – Inter-Autonomous System routing protocol, the main routing protocol of the internet

OSPF Basic

OSPF LSA type LSDB Link State Database DR Designated Router, responsible for flooding process on the multi-access network. Each router on the network forms an adjacency with Designated Router. Backup Designated Router(BDR), DR failure BDR can very quickly take responsibility and become DR. LSA – Link-state Advertisement, Each router generates …