BGP.Tools

It's like a real-time global BGP looking glass that doesn't hate you! You can also pay us to tell you when stuff changes!

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[BGP.Tools @bgptools]

The https://t.co/U2xsYhMVCB August 2024 changelog is out! https://t.co/NwXusElLQN , This month changes include:

* BGP Flapping / Churn detection
* Prefix counts on AS-SET pages
* NAT64 addresses are now automatically translated in the search bar to their IPv4 counterparts

[BGP.Tools @bgptools]

@it_neber_ekered There are known cable breaks impacting a lot of Kenyan ISPs right now, but "weird" is subjective :)

[BGP.Tools @bgptools]

@DougMadory Yeah ROV won't prevent this. But it gave a route for ROV invalids to go via Airtel/TI and hit their destinations, If you did this enough, and the other carriers accepted all 8 /3's, then ROV would basically be moot.

That would be a exceptionally stupid situation though!

[BGP.Tools @bgptools]

Airtel fixed the bogus announcement at 04:40 UTC today. Looking back at the https://t.co/U2xsYhMnN3 data, Orange/GTT/NTT/Cogent also accepted the /3 via Sparkle (TI), from Airtel.

GTT's acceptance was down to a (now fixed) JunOS config gotcha https://t.co/nRNJsLDRhh

[Adam Chappell @packetsource]

@bgptools Thanks BGP Ben for the alert! It turns out that prefix-length checking does contain some hidden man-traps

[BGP.Tools @bgptools]

Looks like AS9498 (Bharti Airtel) typod a /32, /31 or /30. And turned it into a /3 (aka, 12.5% of the IPv4 internet) and other carriers (At least TI & GTT) accepted it!

[BGP.Tools @bgptools]

This halfed the number of RPKI ROV Validating ASNs according to https://t.co/U2xsYhMnN3 (via RIPE Atlas) because those networks accepted the /3 and one of the probe IPs is inside 96.0.0.0/3

[BGP.Tools @bgptools]

@acontios_net More than just TI and GTT, TI accepted it, and NTT/Cogent/Orange/GTT accepted it from TI.

[Doug Madory (also on Bluesky) @DougMadory]

Partial de-peering between Cogent (AS174) and Tata (AS6453) yesterday, first reported by @bgptools.

Here's @kentikinc's view of the drop in traffic over 174_6453 beginning around 18:00 UTC on May 16.

[BGP.Tools @bgptools]

@DougMadory @kentikinc oh to be the Y-axis on your graph :)

[BGP.Tools @bgptools]

This seems to come off the back of Cogent trying to establish a market in APAC, and the main players in that region not wanting to have their market eaten away by Cogent (To be fair, Cogent is very good at getting prices down, and APAC is still quite expensive per mbps)

[BGP.Tools @bgptools]

(The previous TATA-Cogent Full depeering post was wrong)

It appears that TATA-Cogent have partially depeered in APAC. Cogent can't see APAC (notably India) routes anymore. It seems based on statements Cogent has initiated this depeering (Some EU/US routes seem to still be find)

[BGP.Tools @bgptools]

Due to this Networks that are single homed behind AS6453 (in APAC) or AS174 will not be able to reach each other. This is similar but more serious to the previous regional NTT-Cogent depeerings (since the NTT ones "just" increased latency by routing via the US instead)

[BGP.Tools @bgptools]

3. Small fixes/changes

Like every month, there are a number of smaller improvements and fixes that are not blockbuster features, here are this months smaller fixes and changes!

Find the full changelog here: https://t.co/4EbPUv8FoT !

🧵3/3

[BGP.Tools @bgptools]

The https://t.co/U2xsYhMnN3 May 2024 changelog is out!

https://t.co/4EbPUv8FoT

Major changes include:

1. Route Servers on propagation graphs, and more

New display options for propagation graphs, including IXP visibility

🧵1/3

[BGP.Tools @bgptools]

2. Automatic Hijack Detection List generation

Paying customers who have hijack detection enabled can now have their hijack lists automatically updated by the website itself, so new prefixes don't slip through the cracks!

🧵2/3

[BGP.Tools @bgptools]

@MrSaeid007 @Benjojo12 Cloudflare will *sometimes* send anycast prefixes to the route servers of smaller IXPs

[BGP.Tools @bgptools]

You can now change display options for the propagation graphs!

You can now:

* Turn on the display of IX Route Servers,
* Quickly hide your own sessions,
* Switch between straight lines and bendy ones.

[BGP.Tools @bgptools]

And finally, as always a load of smaller fixes/improvements,

🧵4/4

---

You can see the full change log here:

https://t.co/zxpKO9AG4c

[BGP.Tools @bgptools]

The https://t.co/U2xsYhMnN3 April 2024 changelog is out!

Major changes include:

1. Forward DNS History

See what IPs _used_ to point into a IP block, or find out when a Domain started being served from a IP block.

🧵1/4

[BGP.Tools @bgptools]

3. Super Looking Glass Improvements

You can now invert the ASN filter on the super looking glass, in addition the site now displays the number of paths that were not shown due to the sessions being flagged as not for public export

🧵3/4