Joel is an internationally recognized expert in the areas of security, networking and messaging. Follow him on X (formerly Twitter) @joelsnyder. Building enterprise networks with routers and switches ...

Thanks for STP. but one thing pops in my mind how does it stops a network loop in this scenario. A frame (source pc0/1, destination pc2/1) just entered my Switch(SW1) and then router(R1) then ...

I am amazed by the number of networks that I encounter that do not have optimal spanning tree configurations. I first read Radia Perlman’s book “Interconnections” back in 1994. I am amazed that 15 ...

Spanning tree protocol is an essential function of Ethernet networks, and it provides several useful capabilities when used properly. However, STP can cause havoc when a network carrying live video is ...

The Spanning Tree Protocol, sometimes just referred to as Spanning Tree, is the Waze or MapQuest of modern Ethernet networks, directing traffic along the most efficient route based on real-time ...