FTTH help

Ipp0 · Post by **Ipp0** » Sun Aug 15, 2010 1:53 pm

I have FTTH (fiber to home) and I need some help regarding the setting of my network.

I have 200MBIT download and I can't seem to reach it, max I had was around 15MB/s

TCP analyzer:

Code: Select all

« SpeedGuide.net TCP Analyzer Results » 
Tested on: 08.15.2010 13:51 
IP address: 95.136.xx.xxx 
Client OS: Windows 7 
 
TCP options string: 020405b40103030201010402 
MSS: 1460 
MTU: 1500 
TCP Window: 65700 (multiple of MSS) 
RWIN Scaling: 2 bits (2^2=4) 
Unscaled RWIN : 16425 
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840 
BDP limit (200ms): 2628kbps (329KBytes/s)
BDP limit (500ms): 1051kbps (131KBytes/s) 
MTU Discovery: ON 
TTL: 48 
Timestamps: OFF 
SACKs: ON 
IP ToS: 00000000 (0)

I used tcp optimizer with the optimal settings + disabled nagle for gaming (I play WoW)

Rollingstone · Post by **Rollingstone** » Sun Aug 15, 2010 8:58 pm

I have 200MBIT download and I can't seem to reach it, max I had was around 15MB/s

It depends how fast the server can upload to you !

Ipp0 · Post by **Ipp0** » Sun Aug 15, 2010 9:14 pm

Rollingstone wrote:It depends how fast the server can upload to you !

It isn't the case here, I did the test by starting various simultaneous downloads from different servers (100mbit servers, downloading linux distros that are shared around different servers)

Rollingstone · Post by **Rollingstone** » Tue Aug 17, 2010 10:37 pm

max I had was around 15MB/s

100mbit servers

What speed do you expect they are sending to you?

trogers · Post by **trogers** » Tue Aug 17, 2010 11:05 pm

Perhaps a misunderstanding between kilobytes and kilobits?

Ipp0 · Post by **Ipp0** » Wed Aug 18, 2010 6:15 pm

Rollingstone wrote:What speed do you expect they are sending to you?

My FTTH Home Connection: 200 Mbps (~25 MB/s)
Download Servers Connection: 100 Mbps (~12.5 MB/s)
Maximum Speed (In my test): 120 Mbps (15 MB/s)

My test was starting 5/6 simultaneous downloads from 5/6 different servers.

Sorry for my wrong units/values in the 1st/2nd post.

BTW: How about my TCP Analyzer Results, and suggestions to tweak?

trogers · Post by **trogers** » Wed Aug 18, 2010 10:09 pm

Are you connecting a single computer to a 200 Mbps line?

Is there a home grade router between the modem and your computer?

100 010 00 · Post by **100 010 00** » Thu Aug 19, 2010 4:22 am

first try mtu in your network card= 2000 or 5000 or 9000, but first be sure that you have activate in your properties of your net card "jumpo frames". u have to be in a giga lan between pc and modem to achieve those speeds. secondly be sure that your are not limited by your isp. fiber is not ready yet in most countries and the are limitations

Ipp0 · Post by **Ipp0** » Sat Aug 21, 2010 12:40 pm

I got a router/computer with a giga port and I only have one computer connected to my router.

Going to try the MTU / Jumbo Frames next.

About the ISP, they offer 300 Mbps too so I don't think they are limiting me.

trogers · Post by **trogers** » Sat Aug 21, 2010 10:12 pm

Ipp0 wrote:I got a router/computer with a giga port and I only have one computer connected to my router.

Going to try the MTU / Jumbo Frames next.

About the ISP, they offer 300 Mbps too so I don't think they are limiting me.

Check the specifications of your router. What is its maximum throughput?

What speed can you get if you connect your comp directly to the modem, without any router?

Ipp0 · Post by **Ipp0** » Sat Aug 21, 2010 10:26 pm

trogers wrote:Check the specifications of your router. What is its maximum throughput?

What speed can you get if you connect your comp directly to the modem, without any router?

I can't connect my computer directly because there isn't a modem.

I got FTTH and this is how the connection is made:

Fiber comes to my house and connects to an ONT (Optical Network Terminal) this isn't a modem. "An ONT (optical network terminal) is used to terminate the fiber optic line, demultiplex the signal into its component parts (voice telephone, television, and Internet)"

I connect my ONT to a special router which splits the signal into TV, Phone, Internet. So basically I can't remove the router because this is the hardware that allows me to connect my computer.

My router is a THOMSON TG799:

I don't see anywhere the maximum throughput of the router, but the router got both 1 Gigabit Ethernet LAN/WAN port...

trogers · Post by **trogers** » Sun Aug 22, 2010 10:22 am

Ipp0 wrote: I don't see anywhere the maximum throughput of the router, but the router got both 1 Gigabit Ethernet LAN/WAN port...

That's a pretty new device to most of us in this forum.

If it says 1 Gigabit for WAN, then, throughput would be 1 Gigabit/second.

Note: Jumbo frames are only applicable to LAN, and not WAN. The internet still limits MTU to 1500.

trogers · Post by **trogers** » Mon Aug 23, 2010 6:31 am

Try testing with this Gigabit test site: http://nitro.ucsc.edu/