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Thread ID: 102623 2009-08-26 05:36:00 PROBLEM: ADSL Act light stops flashing mafitsi (15205) Press F1
Post ID Timestamp Content User
804453 2009-08-26 07:06:00 Should be:

Phone => to modem => ROUTER => to switch 16 ports => all computers

OR please read my previous post - I added to it.

If you have a 4 Port Modem/Router like I pictured it would go:

Phone => to modem/Router => to switch 16 ports => all computers

As I mentioned previously - A single port Modem like you have only will issue ONE IP address, and a switch will split that into the 16ports ALL with the same Address. = :groan: NO GO - they will cancel each other out.

IF there was only 1 PC connected to the switch it would work - connect any others and instant clash of IP Addresses - ending up with nothing working.

On a LAN, each PC MUST have its own IP addrress.

Eg: lets say the router has a range of 192.168.1.1.-- The Router is 1

PC1 = 192.168.1.2
PC2 = 192.168.1.3
PC3 = 192.168.1.4
PC4 = 192.168.1.5

etc - notice all the same address from the router 192.168.1.? with the last number different.

IF you have two ( or more ) say with 192.168.1.2 = ##((^%&$#@ BIG clash- Nothing works - which is whats happening.

A router will Issue out 15 different Addresses to the 16 Port Switch - (1 port will be used as an "in Line") :thumbs:

You can Add another 16 Port Switch to another router port and you now have 31 PC's able to connect-- etc.

or even "daisy chain" another Switch to the 16 ports to expand it out even further - until you get to 254 Ports.
wainuitech (129)
804454 2009-08-26 07:31:00 Basically even though you've plugged it in to a switch (Which is right in normal circumstances) it appears the Modem is designed for a *single* PC, regardless of plugging it into a switch.

I would recommend something such as this:
pbtech.co.nz
NetComm NB6PLUS4Wn ADSL2+ 11n Wireless Modem Router with 4 Ethernet ports

I've recently begun using them for VoIP deployments, and we have been *hammering* them and so far they've been great!

Get something like that, and your issues should go away :)

Let us know how you go

Cheers


Chill.
Chilling_Silence (9)
804455 2009-08-26 07:50:00 On a LAN, each PC MUST have its own IP addrress.

You are right, and i know that


Eg: lets say the router has a range of 192.168.1.1.-- The Router is 1

PC1 = 192.168.1.2
PC2 = 192.168.1.3
PC3 = 192.168.1.4
PC4 = 192.168.1.5

etc - notice all the same address from the router 192.168.1.? with the last number different.

here is what i see in all the PC

All Computer have
DEFAULT GATWAY 192.168.1.1
DHCP SERVER 192.168.1.1
DNS SERVER 192.168.1.1
SUBNET MASK 255.255.255.0

From a computer to a computer
IP ADRESS 192.168.1.x
sometimes 1 or 2 or or 3 ..ect

because i'm using vista/ADSL, it automaticly loads the IPs, i don't need to configure them manually, or what do you think ?
mafitsi (15205)
804456 2009-08-26 08:01:00 The numbers have to be different, or you'll have ip conflicts. You also have to check WHAT the valid ip range of a router is (it may not be 192.168.1.2 to whatever). The ips are usually on auto in XP as well. You do have the option to enter the ips in manually (some programs may need a static ip) in order to work properly Speedy Gonzales (78)
804457 2009-08-26 08:43:00 Simply put --

A router is required to Issue Multi IP addresses

A switch will redirect a IP address, it WONT issue one.

A Modem , single port like you have only Will issue One IP address, and on a LAN you can only have one IP address at a time - two or more of the same will conflict.

You NEED a ROUTER, and you dont have one.

PS: the IP I gave were ONLY examples 192.168.1.1
wainuitech (129)
804458 2009-08-26 14:38:00 From your post Mafitsi, it seems your DHCP server on the ADSL modem is working properly (you say each computer is getting a unique IP but still failing). Just confirm this for the guys by putting up results here (do the tests when net is not working) - ping COMP1 from COMP2, ping COMP2 from COMP3 etc.

Have you tried static addresses?

You say ADSL / ACT light goes orange, can you list the names of all lights on the modem? Sorry I can't seem to load the first picture you have of your modem and nor can i make out it's model.

The guys advising you may be right on the design of the modem as if you can get it to work without problems on a single computer but multiple (9 in total now right?) computer reproduce the issue everytime then it seems quite simply that the HUAWEI cannot handle the sheer number. Sounds really strange as I have a DLINK-320G Gen II (single port ADSL modem) hooked up to an 8 port switch that works fine with 6 desktops hooked up to it - all in use at the same time sometimes.

I would try an 8 port switch if you have one and see how that goes, let us know how it works out.
Mamaz_NZ (15204)
804459 2009-08-26 15:13:00 I think i don't need a router, because all cybercafe here don't use a router and going fine with them.

I have 5 lights

- Power
- ADSL LINK
- ADSL ACT
- LAN LINK
- LAN ACT

Power, ADSL Link, LAN Link do not flash
ADSL Act, LAN Act always flash.
This is the normal. but as i said "ADSL act some times stops falshing and i lose the connection"

Please, tell me step by step how to:

- ping computer 1 - 2 .;ect
- make static adresses

Thanks
mafitsi (15205)
804460 2009-08-26 15:28:00 You will need find the hostname and IP address for each computer you have .

For Vista, click on Start and in the search box type in cmd .
When the command prompt box shows up .

type ipconfig /all
Note down the hostname and IP address for each computer .

As an example to make it easier, I will refer to your computers as CP1, CP2, CP3 and so on .

Once you have done the above on CP1 righ through to CP9 (or just do five if you want to do a quick test) .

On CP1:
1 . Click on start, type cmd in search box .
2 . In command prompt type, ping CP2 (replace CP2 with hostname of one of your other computers)
3 . Then type, ping (IP ADDRESS of the computer in step 2)
4 . Then type ping google . co . nz
5 . Then type ping 64 . 233 . 161 . 104

Do the above on each of your computers or the first five when you lose net access . For each test, post here whether it was 100% loss or 0% loss . It's important that you post all 4 results for each computer so we can know if it's a DHCP issue, DNS issue, routing issue etc .
Mamaz_NZ (15204)
804461 2009-08-26 15:34:00 am off to bed, but will check on your results in the morning. I am sure that you will get an answer based on the results you post on this forum.

Also on some ADSL modems, there is a setting that disconnects the modem from the internet if it is idle for a certain amount of time. Use your manual or an internet manual to get to the router configuration and ensure this disconnect when IDLE setting is turned off. Only a person with the same model ADSL modem as you will be able to help you with steps for this. Alternatively can you let me know the exact model of the HUAWEI modem you have.
Mamaz_NZ (15204)
804462 2009-08-26 21:43:00 Aren't we losing sight of the fact that he was originally running three computers off a switch which means that the 'modem' was, in fact, a modem/router?

It couldn't be something silly like the DHCP range set to three numbers??? Setting static IP's would clear this up .

Mamaz's tests should be illuminating .
linw (53)
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