nanog mailing list archives

Re: Cogent BCP-38


From: chris <tknchris () gmail com>
Date: Thu, 17 Aug 2017 02:02:03 -0400

Time for someone to bake them a bcp38 cake ....

On Aug 16, 2017 4:04 PM, "Ben Russell" <brussell () stratusnet com> 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
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