Why does the laptop lay down the wireless network it gets into?

A

Alexey Kislitsyn2015-11-30 10:36:53

Computer networks

Alexey Kislitsyn, 2015-11-30 10:36:53

Good day.
The problem with the boss's laptop.
A laptop getting into any wireless network (according to the boss) does something unknown to the router, after which the entire network stops working. After disconnecting the laptop from the network, everything returns to normal. The entire OS on the laptop was reinstalled from scratch, plus Casper 2016 was installed (they sinned on viruses), the problem remained. In the office network, when the DHCP chief's laptop appears, it starts to fail, phantom clients appear in the routing mesh that look something like this: no name, IP is unknown, MAC (poppy example), and we never had such poppy addresses in our network, there are no virtual machines, itself waffle WPA2-PSK (WPS is turned off, the password changed and the probability of connecting from the outside was reduced to a minimum) when the problem laptop is not on the network, the entire network works like a clock.
In general, I myself have never encountered this, but I would very much like to figure it out, and maybe this post will help someone.
Thanks in advance.

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7 answer(s)

V

Vitaly Pukhov, 2015-11-30
@Neuroware

Download Live whatever Ubuntu from it and connect to the network, if everything dies, it means trouble with hardware, if not with software, first decide then search further

I

Ivan, 2015-11-30
@LiguidCool

It is likely that the Wi-Fi module is fried. So simply change it (by doing the livecd check described above).

O

Oleg Tsilyurik, 2015-11-30
@Olej

when the boss' laptop appears DHCP starts to fail, phantom clients appear in the routing mesh that look something like this

And this is from the horror of the formidable boss! ... DHCP flutters! ;-)

S

Saboteur, 2015-11-30
@saboteur_kiev

1. address conflict, if a static IP address is registered on the laptop, which conflicts with, for example, a router.
2. If the laptop does not live in any WIFI network at all, then the WIFI module has come up and sends a bunch of rubbish to the network, which causes failures. If there is at least one network where he lives normally, see the first paragraph.
2. The router is old but with support for fast wifi, the laptop is too new, when you try to connect to 150 Mbps, the router dies. though usually in such a situation the router needs to be rebooted, so I still assume that you have the first point.

C

Cool Admin, 2015-11-30
@ifaustrue

You at least send model to a laptop. And so the answer is obvious: something is wrong with the laptop, but to say more precisely whether it is hardware or software is impossible if you do not resort to fortune telling.

M

Mikhail Lyalin, 2015-11-30
@mr_jok

1/ "put down" in your pants
2/ conflict of network addresses, incorrect distribution of DHCP, etc.