Exa-Networks

exabgp

Python2021–2026

Exa-Networks / exabgp

exabgp

The BGP swiss army knife of networking

Systems & Infrastructure Networking

Explore on GitHub Read Hacker News discussions

5Distinct people

5Mentions

0Explicit recommenders

2.3KGitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

The BGP swiss army knife of networking

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year5 dated mentions

Observed mentions: 2021-10-05 19:30:28 UTC to 2026-08-15 15:47:32 UTC.

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2021	2021-01-01 00:00:00 UTC	2022-01-01 00:00:00 UTC	2	2
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	2	2
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	0	0
2024	2024-01-01 00:00:00 UTC	2025-01-01 00:00:00 UTC	0	0
2025	2025-01-01 00:00:00 UTC	2026-01-01 00:00:00 UTC	0	0
2026 (partial)	2026-01-01 00:00:00 UTC	2027-01-01 00:00:00 UTC	1	1

What Hacker News says

5 sources

esseph·Aug 15, 2026

> What decentralized solution ever existed for preventing DDoS attacks while allowing a spike of traffic when, say, your blog post gets a highly upvoted HN submission? BGP FlowSpec https://github.com/exa-networks/exabgp/wiki/FlowSpec-Overvie...

In Cloudflare's AI Psychosis

_whiteCaps_·Jun 21, 2022

https://github.com/Exa-Networks/exabgp They've got some Docker examples in the README.

In Cloudflare outage on June 21, 2022

justinsaccount·Mar 19, 2022

> not to be tenable in Python https://github.com/Exa-Networks/exabgp is written in python

In BGP Implemented in Go

1vuio0pswjnm7·Oct 6, 2021

"Those translation queries are answered by our authoritative name servers that occupy well known IP addresses themselves, which in turn are advertised to the rest of the internet via another protocol called the border gateway protocol (BGP)." "To ensure reliable operation, our DNS servers disable those BGP advertisements if they themselves can not speak to our data centers, since this is an indication of an unhealthy network connection." Correct me if I am wrong, but here "DNS servers" means the computers, not the software running on them, i.e., each computer is running both DNS software and a BGP daemon. I am not aware of DNS server software that disables BGP advertisements but a BGP daemon could do it. For example, a BGP daemon like ExaBGP can execute a DNS query, check the output and disable advertisements if the query fails. https://

Read the rest

github.com/Exa-Networks/exabgp

In More details about the October 4 outage

mattbee·Oct 5, 2021

13 years ago I wrote a nice reference implementation for BGP "client" use - I just treated it as an API onto Cisco routers: https://github.com/BytemarkHosting/bgpfeeder is 1300 lines of Ruby, one file, no dependencies, and quite verbose. At the time I was running a hosting company & wanted to feed updates to our IP lists from a web-based database into our routers (e.g. a customer wants a new IP to their servers, or moves their VPS images between physical hosts). But I couldn't understand how to get tight control of quagga, or the Ciscos and wondered how how to speak it directly? It took about a week poring over the RFCs and the Net::BGP Perl module, but I can go back to it now for some useful revision. It brought a lot of disparate BGP knowledge together in one place, and re-expressed it in a language I still know. So if you know Ruby

Read the rest

and are curious about BGP it might help you see what you can do with it. Though if you want to use BGP to control your network devices today, you'd use https://github.com/Exa-Networks/exabgp instead. It can pull every trick you could possibly want with BGP - e.g. DDoS mitigation, anycast, and generally letting you mess with BGP via JSON. There are lots of extensions to BGP, and I only cared about the ones to send v4 & v6 routes around. Also I only wanted to write one file :) PS, there is one horror in BGP implementation and that is TCP-MD5. i.e. to authenticate to a peer, you sign every packet of your TCP connection with a little extra extension that contains an MD5 sum derived from a shared secret. It's so weird, but probably preferable to IPSEC or whatever would have been "standard" in 1998: https://blog.habets.se/2019/11/TCP-MD5.html

In Tools to Explore BGP