nanog mailing list archives

Cogent BCP-38


From: Ben Russell <brussell () stratusnet com>
Date: Tue, 15 Aug 2017 15:36:08 +0000

Could someone from Cogent contact me off-list?  We are having an issue with one of our downstream customers who is 
multi-homed to another carrier.  The end customer is advertising their prefix to both us and the other carrier.  Both 
us and the other carrier peer with 174.  However, if the prefix is preferred through us and the outbound traffic flows 
over the other carrier it is dropped.  We suspect uRPF-strict on the other carriers Cogent link.   We are working 
together with the other carrier and have a ticket open the help desk seem to be confused.  Any help would be 
appreciated.  Thanks


Ben Russell
Senior Network Engineer
Stratus Networks
(309)370-3174
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