[a-nsp] Testing forwarding lookups

[Bryan Holloway]

This is really cool ... thank you for sharing!


On 6/22/26 17:58, James Bensley via arista-nsp wrote:
> Hi all,
> 
> There was a thread on NANOG a while back discussing the equivalent command across different vendors, to check what the device would do if a specific packet came in to a specific port [1].
> 
> I commented back then there was no way to do this on Jericho2/+/2C boxes with Arista EOS (I'm talking about the 7280R3 range).
> 
> After some time reverse engineering the Broadcom debugging tools I've got it working now. I've written up my notes for a version 1.0 here: https://null.53bits.co.uk/index.php?page=7280r3-diag-packet-tx
> 
> I'm sure it can be improved upon but that's all I've got time for right now. Hope that helps someone else.
> 
> Cheers,
> James.
> 
> 
> [1] https://lists.nanog.org/archives/list/nanog@lists.nanog.org/thread/65IZUIUM3WTM56W3CLM6HOGK2T7DCEKF/#YB5IW53XGT2HUCIETTTJER6T23TAPTGI
> 
>