[Rapid1898]

Hallo,

i allready asked my questions in the german speaking area - but i would like to ask here also in englisch - hopefully this would be ok...

I set up my old WRT54GL as a switch in my network:

My router / cable modem is a Thompson TWG870UG which has its own WIFI an on that Thompson i have connected my WRT54GL as a switch and there i have would like to have the second WLAN.

Everything works fine - but the WLAN performance on the Linksy WRT54GL is very weak.

Enclosed are the values:
LAN with Thompson: 76 Mbps down / 8 Mbps Up
WLAN from Thompson 54/8
LAN with Linksys (about Thompson): 76/8
WLAN from Linksys: 15/8
(the performance is measured with an laptop - both hardware is near beside and no walls between - i also tried to stop the WLAN on the Thompson, an give it a try with only the Linksys-WLA - but unfortunately with the same weak result...)

My firmware on the Linksys is: DD-WRT v24-sp2 (08/12/10) mini

Why could be the WLAN-Performance so weak on the Linksys?

In the link you can find all my settings on the Linksys for WLAN:
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=305248

Thanks in advance for your help / tipps...

[merrow75]

[Rapid1898]

With "n" and "g" i think you mean the different IEEE 802.11 standards, right?

What do you mean with:
What does the link speed show when connected to the TWG870UG and then the WRT54GL?

Especially with "link speed"?
Where can i see wheter this is a "n" oder "g" WLAN?

[merrow75]

[cdmarshall]

So the first big question is
1) is the device provided by your provider acting as the firewall?

Once we know that we can go through some other options.

[Rapid1898]

@merrow75: i will check this evening and will reply

@cdmarshall: yes the thomson is provided from my cable provider - so it is: Cable => Thomson => LAN => Linksys
And Thomson and Linksys have two seperate WLANs

[cdmarshall]

That didnt answer the question is it acting as the firewall?

[Rapid1898]

I am honestly not sure...
Yes i think the Thomson is also acting as the firewall - i haven´t changed there anything

[cdmarshall]

OK .
The device your using is pretty limited from a throughput stance. its old and doesn't have the processing power needed to get truly high speeds but we may be able to get a bit more out of it.

is your thompson plugged into the WAN port of the WRT54gl? If so then you have the compute overhead of it going through the firewall functions of DD-WRT which is not needed.
the easy way around that is to plug in into one of the LAN ports on the WRT
Next since the Thompson is the core of the network and should be doing the DHCP and DNS shut it off on the WTG so the thompson becomes the gateway and such. We also need to change the IP of the WRT to something new and exciting. Under a normal environment you would find out the internal IP of the thompson (normally 192.168.1.1)and make the Ip of the WRT 192.168.1.2

this will bypass the firewall on the WRT and simplify things dramatically and we can see if that helps your throughput a bit.

There are other things we can do on the WTR if this solution helps to make it a bit cleaner of a setup up but lets see if this helps first.

If it goes wrong for you just plug your laptop into the Thompson hop on here i will help

[Rapid1898]

At first - thanks for your help!

@merrow75:
linkspeed for Thomson is 144 MBit/s and for Linksys its 54 MBit/s

@cdmarschall
the lan-cable is plugged into the LAN1-port - not WAN-port
dhcp-server is disabled - ddns service is also disabled

after changing the ip to 192.168.0.2. i have a slightly better performance:
WLAN from Linksys: 20/8
Interesting is that the performance vom WLAN from the Thomson also slightly improved to:
WLAN from Thompson 60/8

Any possible further improvements for the Linksys-WLAN?

When there are no further possible improvements - are there any recommandation für Switch (min. 4 LAN-Ports and WLAN)?

[merrow75]