Wednesday, August 5, 2020

Crown Castle BGP Community Policy ? 33132:100 33132:123 33132:1103

Hello, we now peer with Crown (AS33132) and AT&T (7018), it was only AT&T before. Advertising two /24's with x5 prepends for the back up and the appropriate community for the AT&T side.

Crown Castle mentioned they don't have a community policy changing local pref like AT&T does (7018:70, 7018:100 ect) and that they just simply honor prepend's and that's about it.

But when I check the looking glass for 2 of Crown's upstream providers, I am seeing community values of 33132:100 33132:123 33132:1103 on one of our public prefixes and I am seeing sub-optimal routing post migration from the Crown side.

Anyone know what these are doing ? The AT&T side is fine. Is it safe to assume it's Crown sending the community since they begin with 33132 ? Can't find much info online on Crowns site.

Thanks.



No comments:

Post a Comment