nanog mailing list archives

Re: uPRF strict more


From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Wed, 29 Sep 2021 23:38:19 +0200

On Wed, 29 Sept 2021 at 22:07, Jean St-Laurent via NANOG <nanog () nanog org>
wrote:

Thanks a lot for sharing.

So 100 Gbps at line rate with 80B frames is about ~150 Mpps.

100 Gbps at line rate with 208B frames is about ~60 Mpps.

It's a significant penalty.


Full rate small packets would be an attack of some kind and could only
realistically arrive at your transit and peering ports. The customers
usually have slower (relatively) ports and a single customer could not
produce a rate of small packets that would be a concern. Therefore uRPF at
customer ports should not be a problem in this regard.

Regards,

Baldur

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