[c-nsp] NX-OS - Fabric Path

[Manu Chao]

;)

On Tue, Jul 20, 2010 at 5:51 AM, Lincoln Dale <ltd at cisco.com> wrote:

> i'm guessing whoever upgraded the NX-OS on these did so using scp/ftp/tftp
> and thus needed to assign an ip-address to do so.
>
> you could verify either way by looking at the output from "show accounting
> log" which saves all config commands and is persistent across power-loss and
> based on the date/time recorded there or order-of-events will likely give
> you an indication of whether it was your guys or the partner.
>
> the only reason i replied is that i've never heard of us ever doing such a
> thing, because it would be an incredibly dumb thing to do.  setting a
> default ip-address might work for a home gateway router / switch, but for
> something in the data center - no. :)
>
>
> cheers,
>
> lincoln.
>
>
> On 20/07/2010, at 1:19 PM, Church, Charles wrote:
>
> > Lincoln,
> >
> >       I did leave out one detail.  These were originally 4.1(3)N2(1), but
> our installation guys did bump them up to  4.2 individually prior to
> installing them.  They tell me they used that pre-configured address, not
> knowing any better.  But the attached file is a 5020 I took out of a box
> personally, and fired up.  I guess it's possible our reseller put that on
> there.  I've seen that same IP address on three other 5020s, and a half
> dozen 5010s, all bought about the same time from the same reseller.  I'll
> bounce it off them, sorry about the finger pointing.
> >
> > Chuck
> >
> > -----Original Message-----
> > From: Lincoln Dale [mailto:ltd at cisco.com]
> > Sent: Monday, July 19, 2010 11:06 PM
> > To: Church, Charles
> > Cc: Manu Chao; Peter Rathlev; cisco-nsp at puck.nether.net
> > Subject: Re: [c-nsp] NX-OS - Fabric Path
> >
> >
> > there is no "default configuration" or pre-coded 10.1.1.50 ip-address on
> mgmt0.
> > first time you boot a switch it starts the setup dialog with a serial
> console port.
> >
> > <
> http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/fundamentals/421_n1_1/Cisco_Nexus_5000_Series_NX-OS_Fundamentals_Configuration_Guide_Release_4_2_1_N1_1_chapter3.html#con_1073243
> >
> >
> > if you had a switch with a configuration then either they were shipped
> from manufacturing incorrectly (i guess its a possibility), or your
> installation guys thought it was a good idea to configure it that way.
> >
> > as i can find no examples of the former listed in bug searches internal
> to cisco, i'd say it points at the latter.
> >
> >
> >
> > cheers,
> >
> > lincoln.
> >
> >
> > On 20/07/2010, at 12:36 PM, Church, Charles wrote:
> >
> >> Just be careful about connecting the mgmt0 interfaces to anything prior
> to
> >> configuring them.  The default IP address of 10.1.1.50 on them (at least
> on
> >> the 4.2 5000s) will cause a spectacular ARP storm when they conflict
> with
> >> each other, like when you attach several unconfigured ones to the same
> >> network.  Several thousand PPS, eventual reloads, etc.  Our installation
> >> guys got ahead of the config guys in our new DC, nice little mess it
> made.
> >> Not sure why they put a default address on them, hope it's something
> they
> >> correct in the future.
> >>
> >> Chuck
> >>
> >> -----Original Message-----
> >> From: cisco-nsp-bounces at puck.nether.net
> >> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Manu Chao
> >> Sent: Monday, July 19, 2010 7:17 PM
> >> To: Peter Rathlev
> >> Cc: Lincoln Dale; cisco-nsp at puck.nether.net
> >> Subject: Re: [c-nsp] NX-OS - Fabric Path
> >>
> >>
> >> Yes, but Nexus hardware is the right platform if you don't want to loose
> any
> >> packet in your DC ;)
> >>
> >> On Tue, Jul 20, 2010 at 12:56 AM, Peter Rathlev <peter at rathlev.dk>
> wrote:
> >>
> >>> On Tue, 2010-07-20 at 08:29 +1000, Lincoln Dale wrote:
> >>>> right now the hardware is using a frame format that is not that of
> >>>> what TRILL uses (and as such we're using a Cisco-defined ethertype),
> >>>> however the hardware is capable of supporting standards-based TRILL as
> >>>> and when the standard is finalised & ratified.
> >>>
> >>> Would that hardware happen be the EARL8? And would there be any chance
> >>> that us "old skool" Cat6500 guys get to share to thrill of TRILL (or
> >>> similar)? :-)
> >>>
> >>> --
> >>> Peter
> >>>
> >>>
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> >
> > <5020 boot.TXT>
>
>
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