I'm a network engineer administering a network with approximately 500 - 600 hosts. The majority of our customers are based in China and our network is located here in the United States. Network connectivity and Internet access is good overall. However, our customers in China have trouble accessing the website www.10086.cn
from our network. The access time to the website is very slow during the peak operational hours of our network, which is about 12:00pm - 5:00pm China Standard Time. Here are a few things to note:
-- Latency to the website is about 160ms, which is good
-- Access to the website is good during Pacific Standard Time, when China is sleeping.
-- Access to the website is good from other collocation providers such Krypt during China peak hours even though latency is higher around 200ms.
-- Adjusting the MTU on the servers to 1492
-- Adjusting the maximum segment size on our switches to 1400 using ip tcp mss 1400. We use Cisco 3550 switches.
Still, we haven't had much success in improving access to the website during China's peak hours. I now find myself posting on this website because I'm out of ideas. Any ideas, solutions, tips on this issue will be much appreciated. Thank you.