Most of the information we are getting from Peering DB.
For Bilateral Sessions(over Private media, or over MPLA vlan), we use the max-prefix defined on PeeringDB profile of the partner.
(And other information also, like AS-SET)
But... Talking about MPLE?
Where do we get the max prefix expected from the route-servers?
I tried to find it on IXPDP (maintained by Euro IX / IX-F), and didn't find that information of max-prefix.
https://ixpdb.euro-ix.net/en/ixpdb/route-servers/ Peering DB
Searching a bit on PeeringDB I saw that some IXPs has a "NET" object created for each "IX".
This is the case of DE-CIX.
But there are other IXPs that don't have this parity between "NET" and "IX" objects.
This is the case of
IX.BR IXPs, and I Believe that is also the case of Equinix IXPs.
And I Believe that the cause is that those entities use the same ASN to all the IXPs.
- In
IX.BR São Paulo we have around 200K routes being announced through Route-Serves.