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Usually in a LAN I get smth like :
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
with the occasional 10ms. But today on a friend's home I found 32ms consistently when pinging the router.
The structure is very simple:
router - non manageable switch - patch panel - 20m cat5e in walls - wall socket - patch cord - lap top
First question : What are the possible causes for latency over 2-3ms on a simple network ?
- Damaged cables/patch cords
- Bad socket/patch panel connections
- Interference from electrical cables - shouldn't it rather cause dropped packets
- Busy network - this could be excluded though because usually intermittent
- Router firmware bug
- Computer Firewall
- Mismatching NIC configuration
- IP conflicts
Second question : What should I look for in this specific case ?
The same lap top pings at 1ms on my network, and speed & duplex is set to auto negotiation on NIC. I will connect directly to the router to check it and there is nothing else on the network to overload it. I will check other lines/wall sockets, but is this something that can be related to the physical wires ?
First question: Most of the stuff listed. – DavidPostill – 2019-07-31T12:46:57.167
3Second question. Connect laptop to router. Test. Connect at next furthest point. Test. Repeat. – DavidPostill – 2019-07-31T12:48:39.353