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Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest-IX
http://www.midwest-ix.com

From: "Saku Ytti" <saku@ytti.fi>
To: "Mark Tinka" <mark@tinka.africa>
Cc: nanog@nanog.org
Sent: Friday, September 1, 2023 8:29:12 AM
Subject: Re: Lossy cogent p2p experiences?

On Fri, 1 Sept 2023 at 14:54, Mark Tinka <mark@tinka.africa> wrote:

> When we switched our P devices to PTX1000 and PTX10001, we've had
> surprisingly good performance of all manner of traffic across native
> IP/MPLS and 802.1AX links, even without explicitly configuring FAT for
> EoMPLS traffic.

PTX and MX as LSR look inside pseudowire to see if it's IP (dangerous
guess to make for LSR), CSR/ASR9k does not. So PTX and MX LSR will
balance your pseudowire even without FAT. I've had no problem having
ASR9k LSR balancing FAT PWs.

However this is a bit of a sidebar, because the original problem is
about elephant flows, which FAT does not help with. But adaptive
balancing does.


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  ++ytti