RIPE RIS MRT download speed issue from US

Dear RIS engineer/users,

Greetings!

I've been seeing inconsistent and slow download speed when trying to access
RIPE RIS MRT files from the US. I'd like to share what I observed and I
hope this could be helpful in resolving the underlying problem.

In early January, I noticed a consistent sub 500KBps download speed,
observed from multiple locations myself (from boxes at ATT, Equinix Metal,
and via Cloudflare WARP). I also posted a quick twitter survey and received
multiple responses saying the same
https://twitter.com/heymingwei/status/1742959348396220557. The situation
seems to be resolved a few days later, going back to 20MBps speed at home
for me.

Today, I again see consistent <1MBps speed from the US west coast at home
with 1Gbps symmetric link (AS7018 ATT).
[image: image.png]

Here is the traceroute from my location (no VPN, 1Gig ATT fiber) to
data.ris.ripe.net:

➜  /tmp traceroute -a -q 1 data.ris.ripe.net
> traceroute to ftp.ripe.net (193.0.11.24), 64 hops max, 52 byte packets
>  1  [AS0] unifi (10.0.0.1)  2.858 ms
>  2  [AS0] 192.168.1.254 (192.168.1.254)  0.899 ms
>  3  [AS0] 108-238-20-1.lightspeed.sndgca.sbcglobal.net (108.238.20.1)
>  4.446 ms
>  4  [AS7132] 71.157.6.120 (71.157.6.120)  4.558 ms
>  5  [AS7018] 12.123.215.174 (12.123.215.174)  16.459 ms
>  6  [AS7018] la2ca22crs.ip.att.net (12.122.2.69)  14.652 ms
>  7  [AS7018] ggr2.la2ca.ip.att.net (12.122.129.105)  10.493 ms
>  8  [AS0] ae7.cr4-lax2.ip4.gtt.net (199.229.231.29)  9.350 ms
>  9  [AS3257] ae1.cr3-ams2.ip4.gtt.net (89.149.128.117)  170.055 ms
> 10  *
> 11  *
> 12  *
> 13  *


Please let me know if there is any other info that I can provide that may
help.

Cheers,
Mingwei
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