What is BGP Peering?

  • BGP peering is an Internet protocol used among network operators that manage how packets are routed across the Internet through the exchange of routing and reachability information between edge routers. It provides the best routing decisions for networks interconnected in the BGP peering mode. BGP peering neighbors, called peers, are established by manual configuration between routers to create a TCP session on port 179. A BGP speaker sends 19-byte keep-alive messages every 60 seconds to maintain the connection.
  • An Internet service provider must obtain an AS (Autonomous System) number from regulatory authorities to be able to take advantage of direct BGP peering.
  • CDS has been operating BGP networks since 1998 and currently holds two numbers: APNIC AS38353 and ARIN AS 63199.

CDS offers BGP peering options for companies hosting inside mainland China and for those hosting outside mainland China.

Contact us for a free consultation on how BGP can improve Internet connectivity for your company.


 Available only in CDS data centers in mainland China:

Global BGP Peeromg  Global BGP

Recommended for any office in mainland China requiring fast, reliable Internet access from China to the world.

Global BGP peering acts as a dedicated international gateway and is designed for use by international enterprises using CDS’ Beijing Data Center as their IT hub. Global BGP provides Internet access from China to anywhere in the world with significantly lower latency and higher availability. A CDS Global BGP peer enabled server can provide reliable access to services such as Google, Facebook, and Wikipedia*.

When Global BGP is assigned to a Virtual Data Center, the host’s IP address is “broadcast” to all AS networks worldwide with direct peering to CDS. All routing requests to the host’s IP addresses are then directly routed to CDS’ network without any searching, forwarding, and transmitting significantly lowering latency.

Contact us to find out more about Global BGP and if it is the right product for you.

*Use of Global BGP feature is subject to regulatory approval



4 Line BGP Peering 4-Line BGP

Recommended for businesses with a presence in China for whom mobile users or users in educational settings are critical.

CDS’ 4 Line BGP peering provides carrier-neutral services to mobile users and Education Net users, who suffer significant delays due to congestion at the internetworking gateway. Currently, there are four major carriers: China Telecom, China Unicom, China Mobile and CERNET. All four ISPs provide nationwide coverage which overlaps, but because they target different markets and a history of division, each ISP has its own segment of customers.  For example, China Telecom has the largest user base in southern China, China Unicom dominates local access in northern China, and the educational institutions are almost exclusively serviced by the Education Net, CERNET.

Unlike the majority of the world, these four networks are connected to each other by only ten access points. Seven of which were added in 2015.

Without multi-line BGP, provided by a third party like CDS, even local Internet traffic between ISPs would have to go through an access point which might be thousands of miles away.

Contact us to find out more about 4-Line BGP peering and if it is the right product for you.


Available in all CDS data centers located outside of mainland China:

China-Optimized BGP Peering  China-Optimized BGP

Recommended for international companies who do not host in mainland China, but need their server accessible from mainland China. A server with China-optimized BGP outside of mainland China will provide faster, more reliable connectivity through the Firewall to China.

Currently, China-Optimized BGP is offered in the following CDS data centers: Hong Kong, Tokyo, Singapore, New York, Dallas, Las Angeles, Frankfurt, Amsterdam, and Dubai.

Leveraging connections to global upstream partnerships and utilizing a wealth of terrestrial and submarine cables, China-Optimized BGP provides high-speed, low latency data transmission with up to 80% latency improvement over the public Internet.

Below is an example of latency at CDS’ Tokyo data center. For the latency results from other CDS data center locations click here.


Tokyo Data Center
Province/City/CarrierRound-Trip (ms)TTL

Contact Us for A Free Consultation

See How CDS Can Improve Your Performance!

Click here to find out more about CDS’ Premium Internet Routing (PIR) solution for website acceleration based on our China-Optimized BGP.


How BGP peering works.

About CDS BGP Peering

CDS AS 63199 BGP currently peers with more than 1000 network operators worldwide. With a dedicated team of network professionals maintaining our BGP networks, the CDS peering network increases on a weekly basis.

Currently, CDS peers with the world’s leading Internet exchanges: DE-CIX in Frankfurt, AMS-ix in Amsterdam, and China Telecom’s CN2. The CDS backbone extends throughout Asia, Europe, and the Americas, providing minimizing routing requests and increasing speed and reliability to our customer’s around the world.

Contact us to find out more about Global BGP peering and if it is the right product for you.

“I’m amazed. Just few mouse clicks and voila! Our deployment across the Pacific is done! It’s really easy with CDS Cloud.”

Ke Yu, Director of IT, IQIyI

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