[c-nsp] network design question

[Shakeel Ahmad]

I am not sure how much convergance time you wan't but if *nix what you can
do is to write a shell script with a cron job to check connectivity in every
1 or 2 minutes...use IFUP & IFDOWN scripts or system calls to check status
of interfaces and give commands via shell script to change the ip and route
on other interface...quite simple.

On 9/7/06, Scott Granados <sgranados at jeteye.com> wrote:
>
> Sorry I should have been more specific on the server side.
>
> We are using dual AMD servers running either CentOS or Suse 10.0.
>
>
> G. Scott Granados
> Sr. Network Operations Specialist
> OFFICE: 415-946-2112 EXT. 222
> CELL: 408-569-4017
> URL: http://www.jeteye.com
>
> -----Original Message-----
> From: Roland Dobbins [mailto:rdobbins at cisco.com]
> Sent: Wednesday, September 06, 2006 12:17 PM
> To: Scott Granados
> Cc: Cisco-NSP Mailing List
> Subject: Re: [c-nsp] network design question
>
>
> On Sep 6, 2006, at 12:11 PM, Scott Granados wrote:
>
> >  Would it be possible to attach the mysql master
> > to both A and B and use some method that allows either card to be
> > reached by the same IP.
>
> Depending on the server hardware and OS you're running, you may be
> able to do NIC failover on the host which, upon detecting loss of
> link on the active switch and port, will simply activate the same IP
> address (and in some configurations, even the same MAC address) on
> the secondary switch/port.  Solaris supports this, and I believe you
> can do it with other *NIXes as well.  I think Windows supports this
> in some NIC configurations, too (will be NIC-and-server-specific).
>
> ------------------------------------------------------------------------
>
> -----
> Roland Dobbins <rdobbins at cisco.com> // 408.527.6376 voice
>
> One of the main causes of the fall of the Roman Empire was that,
> lacking zero,
> they had no way to indicate successful termination of their C programs.
>
>                         -- Robert Firth
>
>
>
>
>
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