In your CCNA studies, you learned about PortFast and the trouble it can cause if configured on the wrong port! Suitable only for switch ports connected directly to a single host, PortFast allows a port running STP to go directly from blocking to forwarding mode. A Cisco router will give you a warning when you configure PortFast: SW1(config)#int fast 0/5…
Tag: Bpdu
Cisco Ccnp Bcmsn Exam Tutorial Bpdu Skew Detection
You may look at that feature’s name and think, “What is a BPDU Skew, and why do I want to detect it?” What we’re actually attempting to detect are BPDUs that aren’t being relayed as quickly as they should be. After the root bridge election, the root bridge transmits BPDUs, and the non-root switches relay that BPDU down the STP…