Re: Cogent BCP-38

["marcel.duregards--- via NANOG" <nanog () nanog org>]

Really surprised that AS174 put in place any anti-spoofing.
We are bgp-transit customer of CGNT and received traffic originated from
RFC1918 on our public p2p link with them

On 15.08.2017 17:36, Ben Russell wrote:
> 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
> [logo]