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Date/Time: Sun, 24 Nov 2024 06:25:00 +0000



Post From: Sierra Chart Internet Connectivity Related Issues

[2024-05-25 16:58:16]
Sierra_Chart Engineering - Posts: 17154
We have been receiving complaints of users in Europe, Asia, and Australia of having poor connectivity to Sierra Chart data feeds including the Denali Data Feed.

Users in the United States are not affected. We would also assume that users in North America are not affected as well. We understand that this issue, has to do with users in Asia, the Pacific and Europe.

We have been doing some research, and the issue does appear to be with our main ISP Cogent. It centers around peering disputes, and them de-peering with other networks. Links at the end of the post.

For the record, Cogent is not used for Teton order routing or serving data out of Aurora Illinois. For that we use Zayo and soon as a backup we will be using GTT for Teton order routing backup Internet. Teton order routing is not affected by any of what is described in this thread.

When we added support for Cogent back in December 2023, it was replacing Internet we were obtaining from the data centers we our using (For example in Equinix CH1 in Chicago). That Internet, had its own problems.

Cogent solved a lot of issues for us at the time and was able to get 2 10 Gb connections installed for us quickly. The decision to use Cogent was not based on price at the time although it was less expensive than other providers and we wondered why the other providers were more expensive. It just happened to be, that Cogent was a provider we had looked at in the past based upon recommendations of others.

We want to remind users, that near the end of when were using the Internet provided by Equinix CH1 which according to them was a combination of NTT and Lumen (a large network provider), there were some customers of ours in the US noticing very severely lagging data, even in the minutes according to some reports. This was a completely unacceptable situation and we moved quickly to resolve this.

It was never the intention to solely rely on Cogent, but we did not add another connection at CH1 like from Zayo because we have been planning to move to a new data center, in Southfield Michigan. We have this new location in Southfield Michigan at this time and we are getting close to moving our equipment from CH1. Southfield Michigan also uses a Cogent connection because it was the intention to move one of the connections from CH1 due to a contractual obligation. Technically that move never occurred. It was considered a new install by Cogent. And we regret doing it. Cogent did not properly advise us on this.

We are obtaining, Internet from the data center there are in Southfield Michigan from 123 Net, who themselves is a Telecom company. We were a little hesitant to do this, but they work with the following providers using BGP routing and they assure us, that there are not saturation of connections:

Lumen AS209 Chicago, IL
Cogent AS174 Southfield, MI
GTT AS3257 Chicago, IL
Hurricane Electric AS6939 Southfield, MI
Lumen AS3356 Southfield, MI
NTT Communications AS2914 Chicago, IL
PCCW Global AS3491 Chicago, IL
Tata Communications AS6453 Ashburn, VA
Arelion AS1299 Southfield, MI
Verizon AS2828 Southfield, MI

Update 2024-06-01: The above connection is in place and now working well.

This Internet connection we expect will be available June 1 but will not be handling the full load of users at the time, until we complete our move equipment from Chicago.

We are also going to upgrade our Internet connections in Aurora Illinois, and serve data from there as well. Update: This is also now completed.

We even looked at using AT&T for Internet access and we may use AT&T. We will spend what is necessary to deliver our customers the best service. Experts have told us though that does not really matter if we use AT&T. We are not really totally convinced by that and we may very will add them as well at some point. But it may not be essential right now.

Getting back to Cogent, apparently the problem is, depeering with other major providers. See the links below.

This has taken us by surprise, and we acknowledge we are not very experienced, in this sector of the industry. And did not know something like this could happen. We are taking immediate steps to resolve this. We have been working hard to relocate from Chicago to Michigan where we can easily maintain the equipment and we have been investing lot, in equipment, and connectivity. For example we are investing in a 100 Gb wavelength connection between Michigan and Chicago.

Links regarding Cogent:
https://www.reddit.com/r/networking/comments/1cu13bv/cogent_depeering_tata/?rdt=48558

https://www.thinkbroadband.com/news/9896-ntt-cogent-peering-dispute-increasing-latency-for-some-routes

For the record, we are angry as hell at Cogent. We are going to give them hell over this. If there is a lawsuit against them, we will join it. This is the most outrageous behavior we have ever heard of.

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Before and after we leave Chicago, CME data, will be served out of Aurora Illinois, and also Michigan.
Sierra Chart Support - Engineering Level

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Date Time Of Last Edit: 2024-06-04 12:41:21