Re: China internet issues

[Brandon Zhi <Brandon () huize asia>]

One of the issues in China is the existence of the Great Firewall. Its
impact is not only about blocking access, but also throttling non-mainland
traffic during peak hours, such as in the evenings, through QoS
restrictions.

Additionally, similar to most Asian home ISPs, Chinese ISPs are not
inclined to optimize international routing. Usually, all non-mainland
traffic is routed through the United States or European countries instead
of connecting directly. Even for traffic to Hong Kong, if there is no paid
peering agreement, the traffic from China Telecom's home broadband users
will be routed through the United States before reaching Hong Kong.

Basically means you have to pay the 3 largest ISPs in China to have a
better performance for users in China Mainland.
*Brandon Zhi*
HUIZE LTD
www.huize.asia  <https://huize.asia/>| www.ixp.su | Twitter

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On Wed, 22 May 2024 at 10:40, Mirai Azayaka <azayaka () apernet io> wrote:

> Hey, what kind of issue are you looking at? The three major ISPs are
> China Telecom, China Unicom, and China Mobile. However, most issues
> are probably related to the Great Firewall (GFW). It can do many
> different things (DNS poisoning, IP blackhole, IP:port block, TCP
> reset, etc.) on the state level.
>
> On Wed, May 22, 2024 at 10:24 AM Vinod Ola <kumarvinodola () gmail com>
> wrote:
> > Yes but it has very old posts. Doesn’t look active anymore.
> >
> > We are having outlook disconnections since 2 weeks and Chinese ISP
> doesn’t tell what’s going on.
> > Sent from my iPhone
> >
> > > On 22 May 2024, at 9:19 PM, Stephane Bortzmeyer <bortzmeyer () nic fr>
> wrote:
> > > On Wed, May 22, 2024 at 08:18:05PM +0530,
> > > Vinod Ola <kumarvinodola () gmail com> wrote
> > > a message of 139 lines which said:
> > >
> > > > Can anyone please help me to get view of China ISP issues and
> backbone issues?
> > > There is a chinese network operators group (found from
> > > <https://labs.ripe.net/nogs/>)
> > > but it seems without any real activity:
> > >
> > > https://groups.google.com/g/cnnog