Monday, July 26, 2021

BGP AS filtering

what's a good BGP command (Cisco) to filter an ASN that i don't want into my network. or just remove all if there is not one.

i want to filter AS 555 but replace-as will not work since it only replaces the 111 with my own. cant use remove-privateAS because im using a private AS.

show ip bgp 2.2.2.2/32

*>2.2.2.2/32172.16.1.11 1 111 222 444 555 9999



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