A networking problem

[Vu Pham]

On 04/26/2012 01:59 PM, Lonni J Friedman wrote:
> Also you didn't quantify how slow is slow?  Is the throughput through
> the router slow if its all local traffic (and does not go through the
> cable modem)?
>
> Regardless, it seems pretty conclusive that there is some sort of
> incompatibility between the linksys products are your cable modem.

Lonni,

When I SHH to my office severs, I can type several keys before I can see 
those keys on the terminal emulater.

My download speed is supposed to be 4Mbps, and upload is 0.5Mbps. I 
called the ISP several times, and they automatically increased my 
download speed to 20Mbps ( no charge, after I talked them about the 
cable bandwidth shared by the whole resident block ) , but unfortunately 
they did nothing for my upload speed.

Even with the download speed of 20Mbps, with the router it often goes 
down to 1-2Mbps.

Thanks,
Vu


>
> On Thu, Apr 26, 2012 at 11:47 AM, Sean Keating<sean at csupport.com>  wrote:
>> So you have to ask what is the difference between the routers and the
>> linux box. Are you testing with the same cables in all situations? Are
>> the routers doing any firewalling or packet filtering? Can you get your
>> hands on another brand of router to see if there is a difference?
>>
>> Sean
>>
>> On Thu, 2012-04-26 at 07:11 -0500, Vu Pham wrote:
>>> I need your advice !!!
>>>
>>> Recently my home network is pretty slow when accessing the Internet .
>>> Contacting the ISP's support shows the problem is my Linksys (E3000)
>>> router. Their tests are:
>>> - connecting the PCs directly to the ISP cable modem ( a Motorola )
>>> shows the bandwidth as high as expected.
>>> - connecting the PCs to my router, which connects to the modem, shows
>>> the bandwidth is pretty low.
>>>
>>> So I got another router (E4200) to test but it shows the same pattern:
>>> slow with router, fast with modem only.
>>>
>>> I do not believe that both routers are bad so I install a Linux server
>>> that acts as a router between the Linksys router and the modem. The
>>> purpose is to check the packets and bandwidth from the router.
>>>
>>> Well, now all my PCs (wireless or wired) behind the Linksys router
>>> access the Internet as fast as when I connect them directly to the modem.
>>>
>>> How can this be ? Some kind of conflicting between the Linksys routers
>>> and the modem ?
>
>