I need to get my MTU to 1492 and not xp 1480

Manik · Post by **Manik** » Sun Oct 05, 2003 8:15 pm

I have tried everything to get my damn thing up, even tried to install raspppoe, but it wont work, I need helpzorz on my tweaks as well, I am guaranteed 1.3 Mbps, here is my details:

TCP options string = 020405a00103030001010402
MTU = 1480
MTU is optimized for Windows XP PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.
MSS = 1440
MSS is optimized for Windows XP PPPoE DSL broadband. If not, consider raising MTU to 1500 for maximum throughput.

Default Receive Window (RWIN) = 24480
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 24480

RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
506880 (MSS x 44 * scale factor of 8)
253440 (MSS x 44 * scale factor of 4)
126720 (MSS x 44 * scale factor of 2)
63360 (MSS x 44)
bandwidth * delay product:

Your RcvWindow limits you to: 979.2 kbps (122.4 KBytes/s) @ 200ms
Your RcvWindow limits you to: 391.68 kbps (48.96 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 56 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000

mccoffee · Post by **mccoffee** » Sun Oct 05, 2003 11:55 pm

I don't think it has to do with mtu what is ur speed now??

Bob Carrick · Post by **Bob Carrick** » Mon Oct 06, 2003 7:45 am

Upping your MTU to 1492 from 1480 will give you really less then a 1% speed increae if you get any. I'd not worry about the MTU at all.

Manik · Post by **Manik** » Sat Oct 11, 2003 7:41 pm

Well I would like to get it up anyway

mnosteele52 · Post by **mnosteele52** » Sat Oct 11, 2003 9:27 pm

Originally posted by Manik
Well I would like to get it up anyway

It will not improve anything, leave it at 1480. Just optimize the rest of your settings.

Manik · Post by **Manik** » Sat Oct 11, 2003 9:30 pm

any suggestions than?

mnosteele52 · Post by **mnosteele52** » Mon Oct 13, 2003 2:39 pm

Try the following Manik:

Download the TCP Optimizer and try the following settings.

Settings tab:

select - PPPoE DSL
check - custom settings
network adapter selection - your NIC
check modify all adapters
maxmtu - 1480
TTL - 64
TCP Receive Window - 37440 or 63360
MTU Discovery - yes
Black Hole Detect - no
Selective Acks - yes
Max Dup ACKs - 3
TCP 1323 Options - uncheck both boxes

Other Settings tab:

Max Connections per Server - 10
Max Connections per 1.0 Server - 20
Lan Browsing Speedup - optimized

Then select "Apply Changes" and reboot to take effect.

VERY IMPORTANT TO DO THE FOLLOWING

1. Under your LAN connection - properties - general tab, uninstall all the protocols there that you do not need.

2. Open IE and select tools - internet options - connections - LAN settings, make sure NOTHING there is checked.

3. ALWAYS connect your modem via ethernet (NIC) and make sure you have the latest drivers for your NIC from the manufacturer. Set your NIC duplex mode to 10mb half duplex for Cable, for DSL it is ISP dependent unless you are using a router, if so then set it to 100mb full duplex for both Cable & DSL (the instructions are in my Help & Tips link). If you are using a router make sure you have the latest firmware.

4. Clear your temporary internet files.

5. Power cycle your modem, unplug it for atleast 15 seconds.

6. Download and update then do a scan with SpyBot 1.2 & Ad Aware 6.0 to remove any spyware then install and update SpywareBlaster to stay spyware FREE. YOU MUST USE BOTH AD AWARE & SPYBOT TO ENSURE YOU ARE SPYWARE FREE SINCE ONE FINDS WHAT THE OTHER MISSES.

7. Make sure you do the faster web page tweak in my Help & Tips link.

8. If you have Zone Alarm as a firewall uninstall it then visit Zonelabs.com for further instructions on removing it's left over junk.

9. Install Outpost Firewall or Sygate Firewall, both have FREE and Pro versions and are heads above ZA.

10. Scan for viruses with your antivirus app, if you do not have one get one IMMEDIATELY, AVG 6.0 is an excellent FREE AV app.

11. Make sure you have ALL of the latest Windows Updates.

SICMF · Post by **SICMF** » Mon Oct 13, 2003 4:08 pm

BTW, Do you have SBC DSL for your Isp?

Manik · Post by **Manik** » Mon Oct 13, 2003 5:23 pm

SICMF · Post by **SICMF** » Mon Oct 13, 2003 5:25 pm

Originally posted by Manik
SBC?

Who is your Internet Service Provider?

Manik · Post by **Manik** » Mon Oct 13, 2003 5:26 pm

Cyberus http://www.cyberus.ca

SICMF · Post by **SICMF** » Mon Oct 13, 2003 5:34 pm

Originally posted by Manik
Cyberus http://www.cyberus.ca

Ok, I wasn't sure if you had SBC for a provider. If you are pushing the range limit they limit the MTU to 1480 at SBC so i wasn't sure. The same thing was happening to me when i tried DSL. I went back to cable. By chance ask them exactly how far you are away from the Main.