Kevin Philp wrote:
> Kieran Murphy wrote:
>>>>>> On Mon, Mar 2, 2009 at 9:31 AM, Kevin Philp <lists at cybercolloids.net>> <mailto:lists at cybercolloids.net>> wrote:
>>>> John Allen wrote:
>>>> Kevin wrote:
>>>> John Allen wrote:
>>>> Kevin wrote:
>>>> I am having problems with my Debian/Lenny
>> firewall/routing box. The internet connection runs
>> really, really slow. It does work - but its very
>> slow.
>>>> My internal lan is 192.168.100.*
>> My DSL router is 192.168.1.254
>> My external nic (wireless) is 192.168.1.1
>> My internal nic is 192.168.100.1
>>>> I checked the routing table:
>>>> Kernel IP routing table
>> Destination Gateway Genmask
>> Flags Metric Ref Use Iface
>> 192.168.100.0 * 255.255.255.0 U
>> 0 0 0 eth0
>> 192.168.1.0 * 255.255.255.0 U
>> 0 0 0 wlan0
>> default 192.168.1.254 0.0.0.0 UG
>> 0 0 0 wlan0
>>>> Your default route is the wireless connection, I'd
>> guess the wireless connection is the issue.
>>>>>> Ifconfig/iwconfig look OK. However if I run
>> traceroute I get some odd results:
>>>> traceroute to an internal LAN address completes in
>> 1 hop
>>>> traceroute to the DSL router 192.168.1.254 from
>> the firewall box fails after about 30 hops - it
>> should be 1 hop.
>>>> Running tracepath on the DSL box gives me:
>>>> server:/home/kevinphilp# tracepath 192.168.1.254
>> 1: 192.168.1.1 (192.168.1.1)
>> 1.218ms pmtu 1500
>> 1: no reply
>> 2: no reply
>>>> On google I get the same
>> server:/home/kevinphilp# tracepath www.google.com
>> <http://www.google.com>
>> 1: 192.168.1.1 (192.168.1.1)
>> 0.950ms pmtu 1500
>> 1: no reply
>> 2: no reply
>>>> Any thoughts welcome
>>>> Kevin.
>>>>>> There does seem to be something wrong with it - the signal
>> quality is claims to get from the access point is about
>> 50% - which is weak considering the access point is about
>> 15 feet away. Also it constantly backs off the rate from
>> 54M down to 1M - my guess is either the wireless card or
>> the router are decrepit - does that sound reasonable?
>>>> I've had a similar problem with my Laptop (Ubuntu Intrepid),
>> was getting 1M all the time until very recently, when some
>> kernel update fixed it. Still rarely get 54Mbps, but between
>> 24 and 36.
>>>> I'd direct wire the Deb box to the DSL modem/router (thats
>> what I've done), so at least the LAN is fast.
>>>>>> I had the box hard wired before and that was fine - but the family
>> don't like ethernet cables run across hallways! I am surprised I
>> got away with it as long as I did.
>>>> I am looking into the driver issue.
>>>> lspci tells me :
>> 00:12.0 Network controller: RaLink RT2500 802.11g Cardbus/mini-PCI
>> (rev 01)
>>>> Actually its a rt2560F chip on an Edimax EW-7128g card
>>>> lsmod tells me I have the following installed
>>>> rt2500pci 17152 0
>> rt2x00pci 7680 1 rt2500pci
>> rt2x00lib 22272 2 rt2500pci,rt2x00pci
>>>> My kernel is
>> Linux server 2.6.26-1-486 #1 Sat Jan 10 17:46:23 UTC 2009 i586
>> GNU/Linux
>>>> So it looks like we have the right driver running.
>>>> I actually checked on a similar machine with a lan connection and
>> I get the same "no reply" from tracepath - so I guess that's
>> actually not telling me anything. I seem to have got it running
>> stably at 2M - I will tweak it up slowly and see what happens.
>>>>>> Are you 100% Certain that your Wireless connection is working?
>> You mention that you're using WPA. Perhaps your wpa_supplicant isn't
>> doing what its supposed to be doing.
>> Try testing this without WPA.
>>>> Regards,
>> Kieran..
>>> 100% sure - the only route to the internet is via the wireless nic on
> the router box - the lan cable has been removed - the hallway is
> clear. It does work - I can browse the internet, run aptitude update -
> but the connection is just slow. I had a similar problem a while back
> when one of the telephone filters was removed and connection speeds
> dropped by about 10 fold.
>> I ran a test downloading a large file from heanet. On my Eircom
> connection at work I got full speed ~270k at home it levelled out at
> 70k - so I have a connection, its just poor. That was the same file
> from the same server downloaded just a few minutes apart.
>> I have actually just read an article on cordless phones causing
> problems - and we have just got some new cordless phones!! I will
> report back on what I find.
>>> Kevin.
As Brendan commented - cordless phones make no difference - my fault for
reading American websites and thinking what they say applies to Europe!
I am coming to the conclusion its a driver issue. I am currently using
the rt2500pci driver as supplied in the Lenny kernel. So I am not sure
where to go from here - I will try to file a question on the
serialmonkey website.
Maintained by the ILUG website team. The aim of Linux.ie is to
support and help commercial and private users of Linux in Ireland. You can
display ILUG news in your own webpages, read backend
information to find out how. Networking services kindly provided by HEAnet, server kindly donated by
Dell. Linux is a trademark of Linus Torvalds,
used with permission. No penguins were harmed in the production or maintenance
of this highly praised website. Looking for the
Indian Linux Users' Group? Try here. If you've read all this and aren't a lawyer: you should be!
