subrate SFP?

Joel Jaeggli joelja at bogus.com
Sat Aug 31 19:38:34 UTC 2013


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 at 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 at gmail.com> wrote:
>> On Fri, Aug 30, 2013 at 6:42 AM, Jamie Bowden <jamie at photon.com> wrote:
>> 
>>>> From: Saku Ytti [mailto:saku at ytti.fi]
>>> Considering that Dell and HP at least are shipping brand new hardware
>> with
>>> IPMI/BMC/iLO/whatever management ports that can only speak 100mbit
>> when
>>> every other Ethernet interface in the box at least gigabit, having a
>> useful
>>> way to talk to that port without having to keep separate switching
>> hardware
>>> around would be nice.  I'm not holding my breath, but you know, along
>> with
>>> a 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.
> 



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