The industry has seen a dramatic shift over the years across the board from compute mega blade servers to bare metal and cloud native container based architectures and networking industry has seen a shift from mega routers and switches to distributed smaller form factor wider blast radius boxes eliminating the all eggs in one or two big baskets yielding as well much lower CAPEX. We have seen across all networks from data center to core network to dwdm transport.
What Robert mentioned is quite relevant across the board and how power groups would apply to 1-RU pizza boxes. Also in a distributed pizza box model the overall power consumption is already much lower. Also the simplicity of the pizza box the electronics is minimal and the main power draw is just the ASIC. As mentioned my Robert all you can do is turn off SFP laser. With the larger chassis you have LC with modular adapters and cage structures and mid planes with fabric layer expansion resulting in tremendous power draw as compared to 1-RU pizza boxes. The transition is still happening and the big chassis are on their way out. Thanks Gyan On Tue, Jul 21, 2026 at 5:39 PM Zafar Ali (zali) <zali= [email protected]> wrote: > Hi Ron > > What I highlighted is: how come someone who claims to have implemented > this did not realize that the sleeping power is non-zero? > If I draw a dotted line, how does one ensure that the power-saving > estimate for a given “power group” is accurate? > The questions Robert asked are valid and related. > What is the right data model? We need to ask the Green WG. > > Also, operators perform many capacity planning exercises to design the > network. > The operators need to consider what the implications are for shutting a > “power group” > What considerations must be in place before shutting down the "power > groups"? > Is this a good idea, or will it create more pain for network operations? > > Thanks > > Regards … Zafar > > *From: *Bonica, Ron <[email protected]> > *Date: *Monday, July 20, 2026 at 3:55 AM > *To: *lsr <[email protected]>; Zafar Ali (zali) <[email protected]> > *Subject: *IS-IS Support for PCPPS > > Zafar, > > If I understood your comment during the IETF 126 session correctly, you > said that the Power Group model may not support some existing hardware > architectures. Can you describe such an architecture? > > Ron > _______________________________________________ > Lsr mailing list -- [email protected] > To unsubscribe send an email to [email protected] >
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