MTU setting

[US.M@JORHAZZARD]

Can anyone tell me the recommended MTU setting for Cable please...
I'm getting major packet loss of upto 26% after only being on TS for a few seconds and then ppl break up can be really anoying in the heat of a battle...

Also getting pings on BF2 on UK/Euro servers of between 25 and 40 where others are getting around 10-20 max...

NTL 250 connected to Netgear RP614 router & 10 meg service, using Dr TCP to adjust MTU values and other settings..

Any help would be greatly appreciated...

Hazz.....

[JonathanLH]

connecting via ethernet? the default i believe is 1500
sounds like you have other issues though, signal levels on the cable modem ok?

[US.M@JORHAZZARD]

connecting via ethernet? the default i believe is 1500
sounds like you have other issues though, signal levels on the cable modem ok?

How would i find this info ?.

[JonathanLH]

http://192.168.100.1
user/pass is root

[US.M@JORHAZZARD]

Sorry my bad should have said where in the settings i would find this info...

---------- Post added at 00:02 ---------- Previous post was at 00:01 ----------

Is this what you mean ?

Downstream Lock : LockedDownstream Channel Id : 1Downstream Frequency : 402750000 HzDownstream Modulation : QAM64Downstream Symbol Rate : 5056.941 Ksym/secDownstream Interleave Depth : taps32Increment4Downstream Receive Power Level : -12.7 dBmVDownstream SNR : 34.1 dB

[Paul]

MTU is set on your PC, not the modem. It should be 1500.

[swoop101]

Run the tweak tester from:

http://www.dslreports.com/tweaks

see if it can help.

[US.M@JORHAZZARD]

After running the dsl tweak test you have to input some data i.e service provider, O/S that sort of stuff, where i get stuck is on the connection type which do i pick ethernet, WINXPpppoe, routerpppoe or normal ?.

these are the results with WINXPpppoe

1. Your Tweakable Settings:
Receive Window (RWIN): 65535
Window Scaling: off
Path MTU Discovery: ON
RFC1323 Window Scaling: OFF
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460
TTL:131
(less any hops behind firewall)
TTL remaining: 120
TOS/TOS subfield: 0
TOS/Flags:
2. Test 491101 byte download
https://www.cableforum.co.uk/images/local/2006/01/5.gifActual data bytes sent: 491101
Actual data packets: 338
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted data packets: 0
sacks you sent: 2
pushed data pkts: 48
data transmit time: 3.316 secs
our max idletime: 1469.5 ms
transfer rate: 134695 bytes/sec
transfer rate: 1077 kbits/sec
This is not a speed test!
transfer efficiency: 100%
3. ICMP (ping) check
https://www.cableforum.co.uk/images/local/2006/01/5.gifMinimum ping: 87.36 ms
Maximum ping: 116.33 ms
Ping stability:
89.77 116.33 87.54 88.21 88.60 88.77 89.44 90.05 87.36 90.97

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/7.gif Check FAQ on MTU for XP (FAQ #2252 (http://www.broadbandreports.com/faq/2252)) both of these i keep getting.
https://www.cableforum.co.uk/images/local/2006/01/7.gif Input line speed for RWIN recommendation
https://www.cableforum.co.uk/images/local/2006/01/6.gif Looking good

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/6.gif Good data stream (no/few rexmits)
https://www.cableforum.co.uk/images/local/2005/11/1.gif 1 second+ stall detected (FAQ #1606 (http://www.broadbandreports.com/faq/1606))

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/6.gif Looking good

[swoop101]

Try with normal

[US.M@JORHAZZARD]

Damn SWOOP that was fast lol.

Hold on ill do it now.

---------- Post added at 11:37 ---------- Previous post was at 11:32 ----------

OK here are the results with a normal connection type also 1 other thing the connection sped i cannot enter as im running NTL BB 10mb service and the little box doesn't allow for the correct value...

NORMAL CONNECTION TYPE:

1. Your Tweakable Settings:
Receive Window (RWIN): 65535
Window Scaling: off
Path MTU Discovery: ON
RFC1323 Window Scaling: OFF
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460
TTL:131
(less any hops behind firewall)
TTL remaining: 120
TOS/TOS subfield: 0
TOS/Flags:
2. Test 432701 byte download
https://www.cableforum.co.uk/images/local/2006/01/5.gifActual data bytes sent: 432701
Actual data packets: 298
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted data packets: 0
sacks you sent: 27
pushed data pkts: 44
data transmit time: 4.844 secs
our max idletime: 2068.9 ms
transfer rate: 80323 bytes/sec
transfer rate: 642 kbits/sec
This is not a speed test!
transfer efficiency: 100%
3. ICMP (ping) check
https://www.cableforum.co.uk/images/local/2006/01/5.gifMinimum ping: 86.63 ms
Maximum ping: 105.40 ms
Ping stability:
88.46 90.98 87.41 86.63 89.33 105.40 86.99 88.70 89.40 88.36

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/7.gif Input line speed for RWIN recommendation
https://www.cableforum.co.uk/images/local/2006/01/6.gif Looking good

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/6.gif Good data stream (no/few rexmits)
https://www.cableforum.co.uk/images/local/2006/01/8.gif 2+ second stall detected (FAQ #1606 (http://www.broadbandreports.com/faq/1606))

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/6.gif Looking good

Note i have set MTU at 1500 in my Netgear RP614 R.3 router and haven't started playing with DR TCP today and when i got fed up last night i reset all the DR TCP setting back to default...

[swoop101]

put in 10000 for speed.


Just realised I have not reset mine, will post again in a while.
Please note I missed a 0 off the above number

[US.M@JORHAZZARD]

I'll start with the speed at 1000 and see what i get but do i enter the values of the tweakable settings in DR TCP i.e

1. Your Tweakable Settings:
Receive Window (RWIN): 65535
Window Scaling: off
Path MTU Discovery: ON
RFC1323 Window Scaling: OFF
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460
TTL:131
(less any hops behind firewall)
TTL remaining: 120
TOS/TOS subfield: 0
TOS/Flags:

So do i change the the values printed in bold type or is it more trial and error ?...


BTW thanks for all yr help man and the timely responses...

either you have just left school or are bored at work or LIKE ME you are unemployed lmao either way thanks man...

---------- Post added at 11:46 ---------- Previous post was at 11:45 ----------

Damn tweak test is always blinking busy lol...

[swoop101]

My results using normal and 10000

1. Your Tweakable Settings:
Receive Window (RWIN): 251120
Window Scaling: 2
Path MTU Discovery: ON
RFC1323 Window Scaling: ON
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460
TTL:
(less any hops behind firewall)
129
TTL remaining: 118
TOS/TOS subfield: 0
TOS/Flags:

2. Test 100741 byte download
Actual data bytes sent: 100741
Actual data packets: 70
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted data packets: 0
sacks you sent: 1
pushed data pkts: 15
data transmit time: 1.110 secs
our max idletime: 1957.4 ms
transfer rate: 31629 bytes/sec
transfer rate: 253 kbits/sec
This is not a speed test!
transfer efficiency: 100%


3. ICMP (ping) check
Minimum ping: 85.18 ms
Maximum ping: 96.73 ms
Ping stability:
93.09 96.73 86.35 86.19 86.89 87.35 85.18 90.76 86.59 87.05




Notes and recommendations:
RWIN is in range
Looking good

Notes and recommendations:
Good data stream (no/few rexmits)
1 second+ stall detected (FAQ #1606)

Notes and recommendations:
Looking good

And I work split shifts so am on my din-dins LOL

[US.M@JORHAZZARD]

LOL ok set connection speed at 10000 and lmao it goes from bad to worse...

1. Your Tweakable Settings:
Receive Window (RWIN): 65535
Window Scaling: offP
ath MTU Discovery: ON
RFC1323 Window Scaling: OFF
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460
TTL:131
(less any hops behind firewall)

TTL remaining: 120
TOS/TOS subfield: 0
TOS/Flags:
2. Test 650241 byte download
https://www.cableforum.co.uk/images/local/2006/01/5.gifActual data bytes sent: 650241
Actual data packets: 447
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted data packets: 0
sacks you sent: 31
pushed data pkts: 61
data transmit time: 5.741 secs
our max idletime: 1162.9 ms
transfer rate: 103651 bytes/sec
transfer rate: 829 kbits/sec
This is not a speed test!
transfer efficiency: 100%
3. ICMP (ping) check
https://www.cableforum.co.uk/images/local/2006/01/5.gifMinimum ping: 87.62 ms
Maximum ping: 102.39 ms
Ping stability:
- 87.74 89.37 87.62 97.41 101.89 88.97 91.78 87.96 102.39
Loss at 56byte pkts: 0%
Loss at 1000byte pkts: 0%
Average Big ping: 97 ms
Big ping stability:
100.38 108.33 91.12 127.34 95.78 92.25 91.78 91.55 114.03 91.83 91.60 91.49 92.15 91.63 92.61 100.15 91.45 92.08 99.63 111.60 91.75 124.97 93.08 94.14 90.13 107.37 93.25 91.17 95.25 91.43 ms

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2005/11/1.gif Choose RWIN between 94900 and 251120 (FAQ #586 (http://www.broadbandreports.com/faq/586))
https://www.cableforum.co.uk/images/local/2006/01/7.gif download/use DRTCP (http://www.broadbandreports.com/front/drtcp.html) .. (FAQ #578 (http://www.broadbandreports.com/faq/578))
https://www.cableforum.co.uk/images/local/2006/01/7.gif Read the tweak FAQ (http://www.broadbandreports.com/faq/tweaks)

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/6.gif Good data stream (no/few rexmits)
https://www.cableforum.co.uk/images/local/2005/11/1.gif 1 second+ stall detected (FAQ #1606 (http://www.broadbandreports.com/faq/1606))

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/7.gif Run a line quality

---------- Post added at 11:56 ---------- Previous post was at 11:54 ----------

If i was to enter your settings into DR TCP would i maybe get a similar result as we are both on NTL BB 10 mb service ?...

[swoop101]

As to the original problem, I would assume that the problem is congestion in your area/cabinet.
Ring NTL to see if they can help with info.
I hope you can get it sorted.

Try my setting to see if it helps.

[US.M@JORHAZZARD]

Thanks man have a good day :)

[swoop101]

And yourself. :)

[US.M@JORHAZZARD]

just a quickie b4 you disappear back to work how do i set windows scaling to 2 ? the only options DR TCP offers are on off and default ?.

[swoop101]

That I can't answer because that I did not set. :scratch: :shrug:

will let you know if I find out.

It looks like it may be automatic when you increase RWIN to over 65535

[US.M@JORHAZZARD]

Again thanks man much appreciated...

---------- Post added at 12:10 ---------- Previous post was at 12:07 ----------

Right then here we go again, i have used your settings and have set MTU in DR TCP to 1500 same as router, i will run tweak test now and post results.

X your figners...

---------- Post added at 12:27 ---------- Previous post was at 12:10 ----------

Are the values in BOLD on the tweak test results page the recommended values that i need to enter into DR tcp ???.

Anyone!!!.

---------- Post added at 13:14 ---------- Previous post was at 12:27 ----------

Ok swoop you Da man thanks for all yr help i think we might have done at last, had to set Rwin to 96360 but it looks ok on the tweak test with the exception of the 2+ second stall detected which looks like that is due to congestion on the network "EVERYBODY GET OFF MY NETWORK" lmAO.

Now the real test to join TS and se how long it takes for me to start going mad again because of vioce breakup and i die a few more times..

Again thanks all for your help especially SWOOP Da man...

will run tweak test in an hour just to see if it was a fluke, ill post...


Thanks again :)
HAZZ.....

---------- Post added at 13:20 ---------- Previous post was at 13:14 ----------

Ok so it wasn't quite an hour but i couldn't wait but from my original test to this....

1. Your Tweakable Settings:
Receive Window (RWIN): 96360
Window Scaling: 1
Path MTU Discovery: ON
RFC1323 Window Scaling: ON
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1460TTL:131
(less any hops behind firewall)
TTL remaining: 120
TOS/TOS subfield: 0
TOS/Flags:
2. Test 1021081 byte download
https://www.cableforum.co.uk/images/local/2006/01/5.gifActual data bytes sent: 1025461
Actual data packets: 704
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted data packets: 3
sacks you sent: 38
pushed data pkts: 108
data transmit time: 6.241 secs
our max idletime: 330.9 ms
transfer rate: 152552 bytes/sec
transfer rate: 1220 kbits/sec
This is not a speed test!
transfer efficiency: 99%
3. ICMP (ping) check
https://www.cableforum.co.uk/images/local/2006/01/5.gifMinimum ping: 88.12 ms
Maximum ping: 133.52 ms
Ping stability:
111.42 107.51 133.52 88.12 88.12 88.62 88.86 88.19 97.89 108.34

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/6.gif RWIN is in range
https://www.cableforum.co.uk/images/local/2006/01/6.gif Looking good

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/6.gif Good data stream (no/few rexmits)

Notes and recommendations:
https://www.cableforum.co.uk/images/local/2006/01/6.gif Looking good


I'm a happy bunny again :)

and yes Swoop you were correct windows scaling is auto set with Rwin above 65535...

[rdhw]

Are the values in BOLD on the tweak test results page the recommended values that i need to enter into DR tcp ???.No, they are the actual values in use detected by the Tweak test. They are not recommendations.

[Jim galbally]

your signal level is sh*t at -12! read the sticky about signal levels.

you can get little devices that go in-line on the coax cable to bring this nearer to 0

[SnoopZ]

your signal level is sh*t at -12! read the sticky about signal levels.

you can get little devices that go in-line on the coax cable to bring this nearer to 0

It can still work perfectly well at -12 according to bbking. Mines been -11 and its now -9 and ive never had any problems with speed or drop outs.

[US.M@JORHAZZARD]

So this
Downstream Receive Power Level : -12.5 dBmV is not good then ?

---------- Post added at 22:42 ---------- Previous post was at 21:05 ----------

On dslreports site they used to have a little proggy to calculate your Rwin value, they have since removed it and i was wonderring if anyone had a similar little prog ????....