Re: Can someone explain this?

[Vern Hamberg <vhamberg@xxxxxxxxxxx>]

The trouble with this, Dennis, so far as I can see, is that this box 
isn't UNIX - we have never had to think about clearing ARP on this box. 
I don't know if there is even a way to do it.

Perhaps that is accomplished by the system when restarting TCPIP - maybe 
with some other command.

This system, as you know, is positioned as not needing all that 
administrative stuff other OS' do.

So is there a way to clear the ARP? It'd be an interesting thing to know.

Thanks
Vern

On 4/14/2011 9:13 AM, Dennis wrote:
> It is a general rule-of-thumb in the unix world: If you replace a switch, clear ARP.  If you replace a router, clear ARP.  Seems to avoid a wealth of issues.
>
> "Gqcy"<gmufasa01@xxxxxxxxx>  wrote:
>
> > On 4/14/2011 7:43 AM, Don Cavaiani wrote:
> > > Last night we put in all new switches, and quickly replugged the IBM
> > i
> > > Ethernet cable, and the system went on running, telnet for sure.
> > >
> > > However, the http servers no longer connected.  This morning I
> > > re-started all the HTTP servers, but we were still unable to connect.
> > >
> > > I then did an IPL which brought everything back up.
> > In my experience, _every_time_ we unplug the Ethernet cable, we had
> > to at a minimum end and restart TCP/IP, and sometimes vary off and on
> > the controller...
> > ymmv...
> >
> > -gerald