Increased load times due to traffic being routed through different country

Website, Application, Performance DNS & Network
1

Hello, we have been experiencing increased load times lately, one of the issues that we found out is that even though our servers are located in Georgia (TBS), traffic goes to France an back to us. Strange thing is that out of 2 major ISP’s, this only happens for one of them. For example, this is the result that we get when visiting https://[redacted].com/cdn-cgi/trace through ISP-1:

fl=471f281
h=[REDACTED]
ip=[REDACTED]
ts=1675346211.627
visit_scheme=https
uag=[REDACTED]
colo=FRA
sliver=none
http=http/2
loc=GE
tls=TLSv1.2
sni=plaintext
warp=off
gateway=off
kex=X25519

But ISP-2 goes to TBS servers directly:

fl=255f3
h=[REDACTED]
ip=[REDACTED]
ts=1675347195.349
visit_scheme=https
uag=[REDACTED]
colo=TBS
sliver=none
http=http/2
loc=GE
tls=TLSv1.2
sni=plaintext
warp=off
gateway=off
kex=X25519

I am looking for some guidance on where to look for the problem. Is this the ISP issue or some misconfiguration in Cloudflare dashboard?

2

FRA is actually Frankfurt, Germany.

Unless you see something marked as Re-routed or Partially Re-routed, on https://cloudflarestatus.com, it would typically be an ISP issue.

Often caused by things like:

  1. They are not peering with Cloudflare
  2. They are peering with Cloudflare, but only (very) far away from themself.

Given that you mentioned major, but not the actual ISP names (or AS (network) numbers), - let me make you two examples (based on public information):

→ AS 35805 (JSC “Silknet”) does not seem from the public view, to be peering with Cloudflare, however, the only datacenters that AS 35805 (JSC “Silknet”) are listing, where both networks are present on, for potential peering, would be in Sofia, Bulgaria and Frankfurt, Germany.

So if they were actually peering with Cloudflare, they would most likely carry all the traffic to either Sofia, Bulgaria or Frankfurt, Germany, and pass the traffic over to Cloudflare there.

→ AS 20771 (Caucasus Online Ltd) does have some indications seem from the public view, that appears like they are peering with Cloudflare (although it seems IPv4 only). AS 20771 (Caucasus Online Ltd) is only listing one datacenter, where both networks are present on, for potential peering, and that location is in Sofia, Bulgaria.

It would here be most likely that they would carry the traffic all the way to to Sofia, Bulgaria, and pass it over to Cloudflare there.

You could always try to poke the ISP(s) that takes you all the way to Frankfurt, Germany, or similar kind of long-distance peerings, and request them kindly to re-consider and open up for more peerings both locally, as well as in neighbouring countries (where possible), to hopefully improve connectivity.

3

Yeah, my mistake

Your examples are correct, “Silknet” is the one we are having problems with.
I really appreciate the detailed response, thank you.

4

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