[lug] Switching IP's

Greg Horne jeerygh at hotmail.com
Tue Jan 8 16:11:38 MST 2002


Will I need to reboot any of my computers after the command 'clear
arp-cache' is used so that they will be discovered by the router?  Or
will they be recognized automatically?

Thanks for the help,
Greg

> -----Original Message-----
> From: lug-admin at lug.boulder.co.us [mailto:lug-admin at lug.boulder.co.us]
On
> Behalf Of John Hernandez
> Sent: Tuesday, January 08, 2002 8:32 AM
> To: lug at lug.boulder.co.us
> Subject: Re: [lug] Switching IP's
> 
> It will cause the router to rebuild it's arp table from scratch, but
> that's nothing to be concerned about.  This should be practically
> instantaneous and unnoticeable on a healthy network.  It's normal
> behavior for a station that joins the network.
> 
> Greg Horne wrote:
> 
> > Ah, that sounds juicy.  I'll look into that one.  Will it do
anything
> > else that I should be aware of?  More importantly, if I do issue
this
> > command how long will it take for my other servers (DNS, SMTP, ...)
to
> > be recognized by the router?
> >
> > Thanks for the help,
> > Greg
> >
> >
> >>-----Original Message-----
> >>From: lug-admin at lug.boulder.co.us
[mailto:lug-admin at lug.boulder.co.us]
> >>
> > On
> >
> >>Behalf Of John Hernandez
> >>Sent: Monday, January 07, 2002 4:06 PM
> >>To: lug at lug.boulder.co.us
> >>Subject: Re: [lug] Switching IP's
> >>
> >>Get the router's enable password and issue:
> >>
> >>clear arp-cache
> >>
> >>-John
> >>
> >>Greg Horne wrote:
> >>
> >>
> >>>That's what I figured too, but I wasn't sure if there was a
> >>>
> > different
> >
> >>>solution.  Uptime at my company is very important though.  Would it
> >>>
> > be
> >
> >>>possible for me to make the necessary changes without rebooting?
> >>>
> > (I'm
> >
> >>>hoping :) )
> >>>
> >>>Thanks,
> >>>Greg
> >>>
> >>>
> >>>
> >>>>-----Original Message-----
> >>>>From: lug-admin at lug.boulder.co.us
> >>>>
> > [mailto:lug-admin at lug.boulder.co.us]
> >
> >>>On
> >>>
> >>>
> >>>>Behalf Of D. Stimits
> >>>>Sent: Monday, January 07, 2002 3:52 PM
> >>>>To: lug at lug.boulder.co.us
> >>>>Subject: Re: [lug] Switching IP's
> >>>>
> >>>>Greg Horne wrote:
> >>>>
> >>>>
> >>>>>  Part 1.1    Type: Plain Text (text/plain)
> >>>>>          Encoding: 7bit
> >>>>>
> >>>>>
> >>>>Perhaps the cisco has the mac address memorized and does not
believe
> >>>>
> >>>>
> >>>the
> >>>
> >>>
> >>>>linux machine is correct. Try cycling the power on the cisco with
> >>>>
> > the
> >
> >>>NT
> >>>
> >>>
> >>>>box disconnected or off.
> >>>>
> >>>>D. Stimits, stimits at idcomm.com
> >>>>_______________________________________________
> >>>>Web Page:  http://lug.boulder.co.us
> >>>>Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> >>>>
> >>>>
> >>>_______________________________________________
> >>>Web Page:  http://lug.boulder.co.us
> >>>Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> >>>
> >>>
> >>
> >>--
> >>
> >>   - John Hernandez - Network Engineer - 303-497-6392 -
> >>  |  National Oceanic and Atmospheric Administration   |
> >>  |  Mailstop R/OM12. 325 Broadway, Boulder, CO 80305  |
> >>   ----------------------------------------------------
> >>
> >>_______________________________________________
> >>Web Page:  http://lug.boulder.co.us
> >>Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> >>
> > _______________________________________________
> > Web Page:  http://lug.boulder.co.us
> > Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> >
> 
> 
> --
> 
>    - John Hernandez - Network Engineer - 303-497-6392 -
>   |  National Oceanic and Atmospheric Administration   |
>   |  Mailstop R/OM12. 325 Broadway, Boulder, CO 80305  |
>    ----------------------------------------------------
> 
> _______________________________________________
> Web Page:  http://lug.boulder.co.us
> Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug



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