nanog mailing list archives
Re: subrate SFP?
From: Jima <nanog () jima us>
Date: Sat, 31 Aug 2013 15:58:23 -0600
Unless I missed something, iLO is always on when the machine has power; as such, WOL shouldn't be coming into play on reasonably modern HP servers. (That said, the power draw is likely still the reason, although I can't readily confirm Charles' observation on my only rackmount Gen8.)
Jima On 2013-08-31 13:38, Joel Jaeggli wrote:
WOL uses 100Mb/s, the phy draws less that way. Sent from my iPhone On Aug 31, 2013, at 10:13, Charles N Wyble <charles-lists () knownelement com> wrote:On hp proliant gen8 servers with management and ilo on same port, with the server off the ports show up as 100mbps. Jimmy Hess <mysidia () gmail com> wrote:On Fri, Aug 30, 2013 at 6:42 AM, Jamie Bowden <jamie () photon com> wrote:From: Saku Ytti [mailto:saku () ytti fi]Considering that Dell and HP at least are shipping brand new hardwarewithIPMI/BMC/iLO/whatever management ports that can only speak 100mbitwhenevery other Ethernet interface in the box at least gigabit, having ausefulway to talk to that port without having to keep separate switchinghardwarearound would be nice. I'm not holding my breath, but you know, alongwitha pony, this would be nice.Eh? That may have been the case a few years ago, but HP ILO4 and iDRAC7 specifically list 10/100/1000 even when using in dedicated port mode. And even in prior versions, you could have the port linking up at 1Gbps, by operating the management in Shared port mode (Sharing the management with the server's Eth0). I expect over time: support for linking up at 10/100 will get rarer and much more expensive. The niche status a 10/100 media converter as an SFP would have if produced is likely to mean it would retail at $2000+ per port device. It probably just makes more sense to go find an old obsolete top of rack switch, like a Cat3750 to get the small fraction of legacy copper ports required for out of band network and server management, which: by the way, should be part of a separate switching infrastructure anyways, to increase the chance it stays operational and useful for troubleshooting, in the event the production network experiences outage or has other issues requiring diagnosis.Jamie-- -JH-- Sent from my Android device with K-9 Mail. Please excuse my brevity.
Current thread:
- subrate SFP? Saku Ytti (Aug 29)
- Re: subrate SFP? joel jaeggli (Aug 29)
- Re: subrate SFP? Saku Ytti (Aug 29)
- RE: subrate SFP? Jamie Bowden (Aug 30)
- Re: subrate SFP? Jimmy Hess (Aug 31)
- Re: subrate SFP? Charles N Wyble (Aug 31)
- Re: subrate SFP? Joel Jaeggli (Aug 31)
- Re: subrate SFP? Nick B (Aug 31)
- Re: subrate SFP? Jima (Aug 31)
- Re: subrate SFP? Saku Ytti (Aug 29)
- Re: subrate SFP? joel jaeggli (Aug 29)
- <Possible follow-ups>
- Re: subrate SFP? Brandon Butterworth (Aug 30)
- Re: subrate SFP? Saku Ytti (Aug 30)
- Re: subrate SFP? sthaug (Aug 30)
- Re: subrate SFP? Tim Durack (Aug 30)
- Re: subrate SFP? Saku Ytti (Aug 30)
- Re: subrate SFP? Saku Ytti (Aug 30)