Re: Sites unreachable while traversing Dallas IXP

[nanog--- via NANOG <nanog () lists nanog org>]

On 26 September 2025 18:01:49 CEST, Brian Turnbow via NANOG <nanog () lists nanog org> wrote:
> HI,
>
> On Fri, 26 Sept 2025 at 17:23, Tom Beecher <beecher () beecher cc> wrote:
> > I'm guessing this isn't the case here, since the OP stated his BGP sessions came up and traffic was flowing, but 
> > it's possible and a good callout.
> Yes it is not an acl on his port, as no sessions would come up,  but
> maybe a fabric forwarding issue.

What if one port was dropping all traffic, but BGP kept retrying until it got hashed onto the working port, or it was 
only L3 hashing and happened to put BGP sessions always on the working port? IMO, BGP being up isn't evidence of all 
links working and no traffic drops.


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