Major Packet LOSS

DiaL-9 · Post by **DiaL-9** » Mon Aug 20, 2001 11:59 am

hello

PII 400
384RAM
NETGEAR NIC
TERAYON CABLE MODEM- not capped

yet speeds are horendous

and i think ive worked out why...
i used visual route too trace many different sites and i found out that like on at least 20 hops to a place i have 10 or 20 or 30 or 40 % packet loss on each hop.. which is nuts i think...

i pinged my ISP cable gateway and no packet loss...

im just wondering what i could change to get rid of the packet loss?

TCP options string = 020405b401010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.

Default Receive Window (RWIN) = 17520
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 17520
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 700.8 kbps (87.6 KBytes/s) @ 200ms
Your RcvWindow limits you to: 280.32 kbps (35.04 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.

MTU Discovery (RFC1191) = ON

Time to live left = 111 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

any help, advice , input would be most appreciated

DiaL-9

Lobo · Post by **Lobo** » Mon Aug 20, 2001 12:03 pm

Click on help page below in signature and follow directions exactly, please leave your OS and system specs if you have not done so.Also if you have Cablenuts adjuster installed I need to know that. On 2nd page of help page at bottom are some Tips and how to do speed test. Thank you and good luck.

DiaL-9 · Post by **DiaL-9** » Mon Aug 20, 2001 12:18 pm

thanks Lobo but can you tell me whats your opinion on it? if im getting so much packet loss?

Lobo · Post by **Lobo** » Mon Aug 20, 2001 12:23 pm

You don't have speed patch installed, your NIC card is not on full duplex is it, go here

You are not going to have speed with RWIN above of 17250, help page

DiaL-9 · Post by **DiaL-9** » Mon Aug 20, 2001 12:32 pm

well ok, umm what do yuo think i should make the RWIN? considering im in HONGKONG and so all sites i access are a long long way away..?

Lobo · Post by **Lobo** » Mon Aug 20, 2001 12:37 pm

First, help page as downloading Cablenuts software first will clean out TCP part of your registry and then SG's patches will put RWIN in

DiaL-9 · Post by **DiaL-9** » Mon Aug 20, 2001 12:55 pm

TCP options string = 020405b40103030201010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.

Default Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 bits
Unscaled Receive Window = 64240
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 47 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

well thats my new settings

i also haev another question

my nic is NETGEAR FA310TX

you mention full duplex?

in properties there are these settings
under advance

Burst Length (1,2,4,8,16,32) DWORDS the choices
Connection Type (100 Base Tx,100-Base Tx Full Duplex,10 Base -T, 10 Base-T Full Duplex)
Transmist Threshold (36,72,96,128,160,256 or store and forward) those are in bytes

what do you think i should pick?

Lobo · Post by **Lobo** » Mon Aug 20, 2001 12:58 pm

Base10-T, I don't know about others see here above

Not full duplex unless you call ISP and they say do it

DiaL-9 · Post by **DiaL-9** » Mon Aug 20, 2001 12:59 pm

thats not full duplex right?

Lobo · Post by **Lobo** » Mon Aug 20, 2001 1:08 pm

No full duplex

DiaL-9 · Post by **DiaL-9** » Mon Aug 20, 2001 1:09 pm

alright well i chose just regularl 10 Base T

anything else i should do?

Lobo · Post by **Lobo** » Mon Aug 20, 2001 1:11 pm

Read here above

DiaL-9 · Post by **DiaL-9** » Mon Aug 20, 2001 1:12 pm

Read here above -? what do you mean?

Lobo · Post by **Lobo** » Mon Aug 20, 2001 1:15 pm

Click on word here, this is from above:

Advanced Member

Registered: Nov 2000
Location: Talladega Superspeedway, Go Braves & Dale Earnhardt Jr.
Posts: 7336
You don't have speed patch installed, your NIC card is not on full duplex is it, go

You are not going to have speed with RWIN above of 17250, help page

here

NotFastEnough · Post by **NotFastEnough** » Mon Aug 20, 2001 4:09 pm

With that low RWIN you shouln't see too much packet loss. Talk to your ISP!

PhyberOptix · Post by **PhyberOptix** » Mon Aug 20, 2001 4:11 pm

RWIN doesn't affect the amt packet loss. It does affect how quickly you recover from packetloss though.

NotFastEnough · Post by **NotFastEnough** » Mon Aug 20, 2001 6:16 pm

Hmmm... I seem to show more packet loss the higher I go with my RWIN...

Lobo · Post by **Lobo** » Mon Aug 20, 2001 6:19 pm

Keep in mind to Large of a Rwin can cause latency (i.e. bandwidth * delay) that affects your RWIN window.
You can't test with Ping to see how your RWIN compares with latency because Ping (i.e. ICMP) does not use TCP options such as RWIN windows
In general nothing in the setting of RWIN causes or prevents packet loss, but it can have a big effect on your channel throughput. If there is a lot of packet loss, the sender wastes time and bandwidth sending data that is thrown away, since the original TCP/IP protocol restarts the send beginning with the lost packet, even though subsequent packets arrived without problem.

NotFastEnough · Post by **NotFastEnough** » Mon Aug 20, 2001 7:33 pm

I understand that, believe it or not. I still think I get more packet loss with bigger RWINS. Just an observation, not necessarily a correct one!

Lobo · Post by **Lobo** » Mon Aug 20, 2001 8:18 pm

Large RWIN's cause latency=packet loss, merci

exile · Post by **exile** » Tue Aug 21, 2001 1:57 am

MY ATTRIBUTES:
------------------------------------------------------------------------------------
TCP options string = 020405b40103030101010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.

Default Receive Window (RWIN) = 102200
RWIN Scaling (RFC1323) = 1 bits
Unscaled Receive Window = 51100
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 4088 kbps (511 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1635.2 kbps (204.4 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 48 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

------------------------------------------------------------------------------------

Oh my friggin GOD! You won't believe... I live in Toronto Ontario of Canada, recently cable is a piece of sh** !!!
I don't know what is going on... I don't know if you guys play online games, but I am a gamer... and a pissed off one too!
I dont know what is going on anymore, SHAW and ROGERs merged... ok good for them, but my cable has been garbage ever since! I go into Counter Strike games with a ping of 1400 !!!
I cant even move ... if you are a gamer... you understand my pain.
I don't know if its becuase of the area I live in, or something wrong with the settings in my computer, or just the plain old stupid box itself. I am using a Motorola Cable modem... is that good or bad? If its bad, which brand should I tell them to give me when I shout at the service manager for my garbage cable?

--------------------------------------------
Can't sleep... clown will eat me. Can't sleep... clown will eat me.

exile · Post by **exile** » Tue Aug 21, 2001 2:13 am

System Analisys:
-----------------------------------------------
Athlon 800 (T.Bird)
45G IBM IDE HD
Linksys LNEPCI2 EitherPCI Lan Card 2
256MB SDRAM
Motorola Cable Modem
Rogers@Home

Asus A7V
CreativeLabs GeForce 2 GTS
------------------------------------------------

If anyone else shares my RAGE AGAINST THE ROGERS@Home
Gimme a HELL YEA!!!

------------------------------------------------
P.S. Is it ok if I smash the modem and get another? Hehe.

Lobo · Post by **Lobo** » Tue Aug 21, 2001 9:31 am

Maybe Online gameing forum is where you need to vent

We jest happy little tweakers in here

SG Broadband Community

Major Packet LOSS

Major Packet LOSS

Kick @HOME where the sun dont shine!

Follow up to previous ANGER POST!