
yunnanexpat wrote:I suspect my connection is being jammed, however what troubleshooting can I do to attempt to improve this speed?
Git!

I have had terrible speeds since last Friday, June 25. That is when the school let all the students out for summer until September. I am living on campus, my modem/router is off-site




yunnanexpat wrote:jb88888 wrote:yunnanexpat wrote:-I am in rural 'none of you would be caught dead here' China..
Oh wow. Sorry, you're too special to take advice from the rest of us losers.
Your post was of no help to me at all.
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@Coffee & Victor:
I will try to figure out which company my service is with and if its FTTB or not.
Since this slowdown commenced at the time that the school let out it is possible that the teachers and others who live on campus are also surfing PPS and such 24-7 and cutting the speed down.



LtSaw wrote: ... go directly to your school office to ask them why internet is so slow.


jb88888 wrote:yunnanexpat wrote:Traceroute works just dandy and it helps me not one iota.
Sorry, I forgot that you're another braindead Republican.
If traceroute works just fine, where is the failure point ? I thought teachers could read ? Do you teach in that rural hellhole where none of us would be caught dead or do you scrub the floors ? Or are you a Creationist teacher from Oklahoma ? Or ... oh please god, not a missionary






LtSaw wrote:God damn it. Do traceroute WITHOUT VPN, only without it you can know, if it is problem of network inside your school or major ISP problem.
No, I'm Ok, let me guess, you are on China Telecom ADSL?
Here is my traceroute on China Unicom FTTH plan:

jb88888 wrote:I hate youAre you engaged to the mayor of Shanghai's daughter ? It's certainly not available to the rest of us.

LtSaw wrote:No. I when I came to Shanghai, I was looking an apprtment near Fudan. And I didn't know back then anything about internet here. So I checked internet options in every bulding where I was looking for flat. All the buildings had China Telecom ADSL 4-8Mbps OR China Unicom's FTTH plans 10Mbps-35Mbps. China Unicom FTTH 20Mbps plan was 210RMB/month (now it is 190RMB/month), Telecom's ADSL was 230RMB for 8Mbps. Lady from realtor company told me to chose Telecom's ADSL plan, I didn't understand why, she told me it has "better quality and speed" (as i said I didn't know anything about internet and ISPs in China), so I went with China Unicom 20Mbps plan. In the end it prooved that it is better than China Telecom ADSL. My friends who live near me always whining about slow internet in the evenings, but now they can't change their plan to Unicom because they already paid for 1 year ahead for Telecom's ADSL + there is a quoque on connecting to FTTH plans. It takes 40-70min for me to download 8Gb HD movie. They can't even watch YouTube via VPN without preloads. Feels good man.




yunnanexpat wrote:@Coffee & Victor:
I will try to figure out which company my service is with and if its FTTB or not.
Since this slowdown commenced at the time that the school let out it is possible that the teachers and others who live on campus are also surfing PPS and such 24-7 and cutting the speed down.


Time to fix things!


braincracking wrote:Its actually PPStream, which can be found here http://en.wikipedia.org/wiki/PPStream
Its a gigantic p2p video streaming network inside the mainland, and it literally eats bandwidth, this thing is probably not very well designed and can grind any network to a halt. This includes normal BT ADSL in UK. Just be damn sure that those 'students' especially the female ones, are watching this all day... Well, nothing you can do about it until school's back on.

LtSaw wrote:Well, school CAN do few easy steps to end this kind of ****. All you need to do, is add to blacklist few most popular BT trackers that chinese use (I don't think there are more then 10-20 in China) + set NAT to Secure. Problem solved.

mochabene wrote:yunnanexpat,
From your description of the network environment, it is quite difficult to determine the exact root cause of the problem. There are too many factors which are out of your control. I don't know if you have access to the main modem or core switch, but this is where to start, before it gets distributed with the other 2000+ users on campus. You eliminate the "entire network" variable and you can test if the main line is problematic since you are the only user. Do this with the China Unicom guy if possible.
Then you can continue diagnosis; identify what is in your control (the route to the core switch) and what is not (exisiting infrastructure and other users eating bandwidth)LtSaw wrote:Well, school CAN do few easy steps to end this kind of ****. All you need to do, is add to blacklist few most popular BT trackers that chinese use (I don't think there are more then 10-20 in China) + set NAT to Secure. Problem solved.
My friend, if it were only that easy. I've configured servers and systems in my spare time and BT is the scum of all. The Chinese love their eMule ed2k and XunLei BT(Thunder) and this really eats all the bandwidth at schools or hotels. Even if you blacklist trackers - p2p clients intershare through modules such as DHT.
Even if you think you can outsmart the TCP calls or UDP broadcast, they even randomly switch ports. The NAT secure feature doesn't really work.
The only way is to set rigid quotas on TCP and UDP per user IP and that takes network planning on the DHCP subnet.
Some local Chinese are also using private trackers (even international ones) to do their BT announcement urls.
In summary, its this constant battle between the P2P software programmers, the compatibility with networking hardware and protocol and the system admins who are trying to limit your software capability to ensure "fair usage"
peace


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