nanog mailing list archives
Re: Serious Juniper Hardware EoL Announcements
From: Saku Ytti <saku () ytti fi>
Date: Fri, 17 Jun 2022 15:47:58 +0300
On Fri, 17 Jun 2022 at 15:39, Tom Beecher <beecher () beecher cc> wrote:
Thank you for calling out the HMC point. I think that alone is worth retiring the platforms that were built around it. The number of issues related the the HMC memory drivers were out of hand early on, and lingered long past the growing pains phase. I’m sure in the big picture, supply chain / manufacturing constraints accelerated this, but part of me is happy to see HMC based stuff go.
I can't pinpoint HMC as a bad solution, yes we've had our share of HMC issues, but we've also on JNPR and some other vendors previously replaced all linecards due to memory issues, before stacked DRAMs were a thing, memories are notoriously fragile. I can pinpoint HMC as a huge risk due to no manufacturer :). The memory issues are exacerbated by needing to reload the whole linecard when one memory has issues, JNPR has now delivered on newer images fixes where you can reduce both the collateral damage and downtime by reloading individual PFEs (and connected memories). I do think HMC was a solid engineering choice, and I am a bit annoyed that it lost to HBM instead of co-existing with little different optimization points. But that doesn't excuse the situation. -- ++ytti
Current thread:
- RE: Serious Juniper Hardware EoL Announcements, (continued)
- RE: Serious Juniper Hardware EoL Announcements tim () pelican org (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Martijn Schmidt via NANOG (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Eric Kuhnke (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Saku Ytti (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Brian (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Eric Kuhnke (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Saku Ytti (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Raymond Burkholder (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Saku Ytti (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Tom Beecher (Jun 17)
- Re: Serious Juniper Hardware EoL Announcements Saku Ytti (Jun 17)
- Re: Serious Juniper Hardware EoL Announcements Mark Tinka (Jun 18)
- Re: Serious Juniper Hardware EoL Announcements Raymond Burkholder (Jun 14)
- RE: Serious Juniper Hardware EoL Announcements tim () pelican org (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements JASON BOTHE via NANOG (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Mark Tinka (Jun 14)
- RE: Serious Juniper Hardware EoL Announcements Adam Thompson (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Matthew Petach (Jun 14)
- RE: Serious Juniper Hardware EoL Announcements Tony Wicks (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements John Gilmore (Jun 14)
- Message not available
- Message not available
- RE: Serious Juniper Hardware EoL Announcements Shawn L via NANOG (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Jared Mauch (Jun 14)
- Re: Serious Juniper Hardware EoL Announcements Dave Taht (Jun 14)