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4:15 AM
 
 
7 hours later…
11:42 AM
Hi. Why if you make a loop with a ethernet cable (one cable in two different ports), the internet of that whole room goes down?
 
 
2 hours later…
1:39 PM
A Switching loop or bridge loop occurs in computer networks when there is more than one Layer 2 (OSI model) path between two endpoints (e.g. multiple connections between two network switches or two ports on the same switch connected to each other). The loop creates broadcast storms as broadcasts and multicasts are forwarded by switches out every port, the switch or switches will repeatedly rebroadcast the broadcast messages flooding the network. Since the Layer 2 header does not support a time to live (TTL) value, if a frame is sent into a looped topology, it can loop forever. A physical topology...
 
 
1 hour later…
3:08 PM
@O'Niel On datacentre class switch you can always configure loop protection. It works by detection and blocking of ports.
It's good to have iit
At least at the core switch
 

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