Hello everybody, just in case you may be interested, I've released a tool that can be used to automatically generate the content of pmacct's bgp_peer_src_as_map file:
https://github.com/pierky/mactopeer It uses NAPALM to connect to network devices, then it fetches ARP entries and BGP sessions and finally it builds the source MAC address / ASN map. I've also coded a feature to guess ASNs of IP addresses that have not a straight BGP session configured on the device, for example in case of multi-lateral peering such as route servers at IXPs; it uses data from PeeringDB. Beta status: as usual, any feedback is much appreciated ;-) -- Pier Carlo Chiodi https://pierky.com
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