Ethernet cable length

Basic knowledge... write it down to avoid forgetting... learning is endless ...................

10 BASE-T Ethernet specifications can be categorized into 5-4-3-2-1 rules:
5. Five CIDR blocks are allowed. The maximum length of each CIDR block is 100 meters.
4. Allow connection to four repeater or hub on the same channel
3. nodes can be added to three CIDR blocks.
2. In the other two CIDR blocks, no node can be connected except for the repeater link.
1. The above will create a large conflict domain, with a maximum of 1024 sites and a network diameter of 2500 meters.