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Topic: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

Approximately in 2012 the local network, about 40 workplaces has been collected, pair of switchboards, a router and all is fine, all works, all is printed, the Internet there, or here with restricted possibilities, but the trouble lately began, I can not understand in what business
For example, I want to print on the printer, the printer is not present, sometimes is, sometimes is not present, it is necessary to go either on the printer or on the switchboard to pull out and interpose a lace, and such problems are on a row of the peripheral equipment while the connector you will not distort either on the side of a piece of iron or on the switchboard, the network is not present. A problem not that some pieces of iron fall asleep, some at reversal wake up.
Then at computers such problem only at one .
The switchboard changed, new put. The problem remained. Conflicts of addresses are not present, all since grid creation was on static addresses, is WiFi, but it has other network, and distributes also other network.
Rebooted a network entirely, held some time without a network, with dreams that probably capacity currents leave, changed nothing, ran with a tester, almost on all ends walked, the tester of remarks on one twisted pair did not produce.
What thoughts?

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

On any workplace  a network card...

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

yemets63;
I recommend to esteem article http://digital7.ru/--windows--/
Should be useful.
The reasons  network devices and computers can be a little;
Difficult problem...

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

At us such problem dared after switch changeover.

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

DHCP it is lifted or fixed IP?

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

If problems  () to check up:
- The master the browser (computers  only on ip to addresses, instead of on names), on network full-spheres too is come only on ip - normally it is displayed in broad gulls on the PC
- As if a problem with printers can it is simple restrictions on an amount of connections and it is necessary to drop sessions (it too in broad gulls on the PC is written)
- There is still what-thread virus starts a grid to load or flood from network devices, but it it is necessary to put controlled switches that on them to look to statistican and to calculate  the device.

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

Not, , it is all checked up, a router difficult, the virus is not present, brains poured anew, a config manually imported, switchboards not controlled
DHCP it is lifted inside, errors are not present, for some years not was glitches IP everywhere are anchored, and neither who nor that did not change.
Article interesting, but not that, is all transited at dawn ethernet
And here to look for a card , a variant, twist the network circuit, some machines stablly, and some which nearby are not present, probably punch other currents from mother or the case on a card, hardly above, or hardly more low, pressure accumulates, and yet  will not drop
On a router the port cannot , the grid can work without it, such organization of a network right at the beginning provided, i.e. is purely local inside. Disconnected a router, glitches remain. I will search for a card, which .

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

yemets63 wrote:

all since grid creation was on static [/quote addresses
It in vain.
On clients it is necessary to include the DHCP-client.
To distribute permanent addresses it is possible and on DHCP.

yemets63 wrote:

what thoughts?

1. The network circuit at levels L2/L3, with instructions of all connections, models of devices, MAC-addresses and IP addresses.
2. The circuit of addressing and routings (establishing shot).

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

yemets63 wrote:

switchboards not controlled

Then all is normal, and will run.
In 2012 to use the uncontrollable equipment was nonsense.
Put the controlled equipment, at least level web-smart (for example D-Link DGS-1228).
Any stages (connections by "daisy"), each workplace should be connected in the switchboard by separate cable.

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

yemets63 wrote:

approximately in 2012 the local network, about 40 workplaces has been collected, pair of switchboards, a router and all is fine, all works, all is printed, the Internet there, or here with restricted possibilities, but the trouble lately began, I can not understand in what business
For example, I want to print on the printer, the printer is not present, sometimes is, sometimes is not present, it is necessary to go either on the printer or on the switchboard to pull out and interpose a lace, and such problems are on a row of the peripheral equipment while the connector you will not distort either on the side of a piece of iron or on the switchboard, the network is not present. A problem not that some pieces of iron fall asleep, some at reversal wake up.
Then at computers such problem only at one .
The switchboard changed, new put. The problem remained. Conflicts of addresses are not present, all since grid creation was on static addresses, is WiFi, but it has other network, and distributes also other network.
Rebooted a network entirely, held some time without a network, with dreams that probably capacity currents leave, changed nothing, ran with a tester, almost on all ends walked, the tester of remarks on one twisted pair did not produce.
What thoughts?

99.99 % a dead switch, transited the such. And began with a semidead network card - revealed a method of serial switch-off of clients of a network all by turns.
BUT the normal switch of so does not conduct, therefore changing a switch on not D-Link - at us at once all earned even with a semidead network card in .
PS. 40 workstations it on mine not such amount to put controlled switches.

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

andycat wrote:

40 workstations it on mine not such amount to put controlled switches.

Yes, therefore the HARDWARE cannot understand till now that at it happens in a network.

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

The clever switch able  flooding  is necessary and to write about it broad gulls. When there will be a record "port No nn about a poppy thy the such becomes blocked" at once clearly where to run.

andycat wrote:

40 workstations it on mine not such amount to put controlled switches.

It just that amount when already it is necessary, especially when something began . Otherwise greetings "Groundhog Day".

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

I do not want to plant long polemic it is necessary / it is not necessary a controlled switch;
On practice - delivering a normal piece of iron - the network works without failures by decades

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Re: The local network of a crust wets, In what there can be a business, councils of the skilled are necessary

By the way yes, recalled, in the summer in 2007 the first time I came across a similar problem, changed a switch of 48 ports on HP - the organization works till now, many people exchanged, computers and  technics - I and with a network of problems are not present.

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