dslreports logo
site
 
    All Forums Hot Topics Gallery
spc

spacer




how-to block ads


Search Topic:
uniqs
566
share rss forum feed


pende_tim
Premium
join:2004-01-04
Andover, NJ
kudos:1
Reviews:
·Comcast

Suggestion Needed

I have Comcast "performance" tier service and am seeing some slowness when I use my wireless connection.

If I use the wireless N or G the connection tests at 17-20Mbps down with a ping of 38 to the best server on speedtest.net.

If I plug an Ethernet cable in, I test at 25-27Mbps with a ping of 25ms os the wireless is costing me 20% of my speed

My setup: Dell laptop with Intel Centrino 1030 card, Router is Asus RT-n16 with Tomato Firmware v1.28.7494 MIPSR2-Toastman-VLAN-RT K26 USB VPN, located about 30' from the Router.

WMM is enabled, Tomato power is set to 100mw, laptop power is set to max, using "N" and signal signal is "excellent" . Same speed results with or with out WPA2 security.

One curious thing: on the Wireless 1030 card "advanced" properties tab, I have 802.11n Mode "enabled" but under Wireless Mode, there are only 3 selections: 802.11b, 802.11g and 802.11b/g

The area is a little congested: the Intel Diagnostics shows 17 APs available for connection so there may be a little interference, however the Tomato site survey shows the closest frequency channels are -80dBm.

Any tweaks recommended on the configuration or information needed to help diagnose and improve this connection?

Thanks, Tim
--
The difference between genius and stupidity is that genius has its limits.


John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
kudos:8
Most of the hit is due to TCP/IP overhead associated with wireless transfers.

What is your MTU set at?


clarknova

join:2010-02-23
Grande Prairie, AB
kudos:7
Reviews:
·TekSavvy DSL
reply to pende_tim
It could be that your transmit power is too high (or low). I recommend you read this:

»tomatousb.org/tut:increasing-wrt···it-power
--
db


pende_tim
Premium
join:2004-01-04
Andover, NJ
kudos:1
Reviews:
·Comcast
reply to John Galt
Hi john,

looks like it is set at 1500 on the laptop,
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\pendetim>netsh interface ipv4 show subinterfaces

MTU MediaSenseState Bytes In Bytes Out Interface
------ --------------- --------- --------- -------------
4294967295 1 0 21902039 Loopback Pseudo-Interface 1
1500 1 136506177 35698292 Wireless Network Connection
1500 1 841984677 72539297 Local Area Connection
1500 5 0 162688 Wireless Network Connection 2
1500 5 0 171544 Bluetooth Network Connection
1500 5 0 162688 Wireless Network Connection 3
1500 5 0 0 Local Area Connection 2
1500 5 0 0 Local Area Connection 3
1500 5 0 2624 Local Area Connection 3

C:\Users\pendetim>

any suggestions what I should try?
--
The difference between genius and stupidity is that genius has its limits.


John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
kudos:8
said by pende_tim:

any suggestions what I should try?

Set it to 1492.


pende_tim
Premium
join:2004-01-04
Andover, NJ
kudos:1
Reviews:
·Comcast
reply to clarknova
said by clarknova:

It could be that your transmit power is too high (or low). I recommend you read this:

»tomatousb.org/tut:increasing-wrt···it-power

That is the first thing I tried, with little success.
--
The difference between genius and stupidity is that genius has its limits.


pende_tim
Premium
join:2004-01-04
Andover, NJ
kudos:1
Reviews:
·Comcast
reply to John Galt
said by John Galt:

said by pende_tim:

any suggestions what I should try?

Set it to 1492.

here is my ping -l

is 1470 my sweet spot????

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\pendetim>netsh interface ipv4 show subinterfaces

MTU MediaSenseState Bytes In Bytes Out Interface
------ --------------- --------- --------- -------------
4294967295 1 0 21902039 Loopback Pseudo-Interface 1
1500 1 136506177 35698292 Wireless Network Connection
1500 1 841984677 72539297 Local Area Connection
1500 5 0 162688 Wireless Network Connection 2
1500 5 0 171544 Bluetooth Network Connection
1500 5 0 162688 Wireless Network Connection 3
1500 5 0 0 Local Area Connection 2
1500 5 0 0 Local Area Connection 3
1500 5 0 2624 Local Area Connection 3

C:\Users\pendetim>ping google.com -f -i 1500
Bad value for option -i, valid range is from 1 to 255.

C:\Users\pendetim>ping google.com -f -l 1500

Pinging google.com [74.125.228.35] with 1500 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 74.125.228.35:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\pendetim>ping google.com -f -l 1497

Pinging google.com [74.125.228.35] with 1497 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 74.125.228.35:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\pendetim>ping google.com -f -l 1492

Pinging google.com [74.125.228.35] with 1492 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 74.125.228.35:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\pendetim>ping google.com -f -l 1490

Pinging google.com [74.125.228.35] with 1490 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 74.125.228.35:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\pendetim>ping google.com -f -l 1480

Pinging google.com [74.125.228.35] with 1480 bytes of data:
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 74.125.228.35:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\pendetim>ping google.com -f -l 1470

Pinging google.com [74.125.228.35] with 1470 bytes of data:
Reply from 74.125.228.35: bytes=1470 time=24ms TTL=53
Reply from 74.125.228.35: bytes=1470 time=25ms TTL=53
Reply from 74.125.228.35: bytes=1470 time=25ms TTL=53
Reply from 74.125.228.35: bytes=1470 time=39ms TTL=53

Ping statistics for 74.125.228.35:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 24ms, Maximum = 39ms, Average = 28ms

C:\Users\pendetim>
--
The difference between genius and stupidity is that genius has its limits.


John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
kudos:8
Close enough...!

I see about the same hit on wireless vs wired as you do...it is the nature of the beast.


pende_tim
Premium
join:2004-01-04
Andover, NJ
kudos:1
reply to pende_tim
Would going to 802.11a help any? with a new Intel 6230 card in the laptop?

If so what access point would you suggest for the 5 gHz band?
--
The difference between genius and stupidity is that genius has its limits.


John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
kudos:8
You'll take the wireless performance hit regardless of what band or card you use.

It's the nature of the beast.