and I would say the OP wasn't even about elephant flows, just about a network that can't deliver anything acceptable. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com ----- Original Message ----- 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. -- ++ytti