Archive for December, 2020

STP Port States and BPDU Timers

Posted: 13th December 2020 by ccna7guru in ITN

To facilitate the learning of the logical spanning tree and avoid loops, each switch port transitions through five possible port states and uses three BPDU timers.The five STP port states are as follows:■ Blocking: The port is a non-designated port and does not participate in frame forwarding. The port continues to process received BPDU frames […]

Spanning-Tree Algorithm

Posted: 13th December 2020 by ccna7guru in ITN

STP ensures that there is only one logical path between all destinations on the network by intentionally blocking redundant paths that could cause a loop. A switch port is considered blocked when network traffic is prevented from entering or leaving that port. STP uses the spanning-tree algorithm (STA) to determine which switch ports on a […]