connectivity matrix

updates every 5 minutes, last updated on 2024-07-03 at 14:12.

This connectivity matrix indicates the networks that each group

can reach with a valid AS-level path ( );
can reach with an invalid AS-level path ( );
cannot reach ( ).

We determine reachability by sending periodic pings between hosts in all networks, if the ping succeeds, we consider the AS reachable.

We determine validity by comparing the BGP looking glass outputs with the project topology and business relationships. A path is valid if it does not violate any business policies. Importantly, we check both the best advertisement as well as backups. A path is only considered valid if all advertised paths are valid.

If your path is invalid because you receive invalid advertisements from other groups, we encourage you to reach out to them to fix the issue together.

Note that the period for pings between two ASes can be higher than the matrix update frequency, and it may take a few matrix updates until a change for a particular pair of ASes is visible.

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