Great Circle Associates Firewalls
(April 1995)
 

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Subject: Re: 2 IP addresses on 1 Ethernet card? (SG IRIX 5.3)
From: Alan Hannan <alan @ mid . net>
Date: Mon, 3 Apr 1995 13:27:52 -0500 (CDT)
To: dar @ cadcentre . co . uk (D.Ashton-Reader)
Cc: firewalls @ GreatCircle . COM
In-reply-to: <9504031602 . AA18676 @ sp23> from "D.Ashton-Reader" at Apr 3, 95 05:02:54 pm

> I want to configure a single Ethernet card on an SG IRIX 5.3 machine
> to act as 2 different IP addresses (i.e. and different network nos.)

  In solaris, this is done in the following manner:

	Assume the interface has a "normal" ip of 10.0.0.50
	Assume you want your interface you have another ip of 10.0.0.60.

  ifconfig le0:1 10.0.0.60 up

  The :1 sets up an "alias" for the interface.  I am not certain how this
applies to IRIX.

> I get rumour that this is possible via PPP, but can anyone advise
> the details of how its done pretty-please

  It may be possible to setup some sort of routing to (secondary) loopbacks
in order to emulate a second ip address.  Perhaps someone that's done this
will tell.... I know how to do it on ciscos, but cisco's IOS is a bit different
from Unix Router Daemons.

  Good luck.  It is often nice to have secondary ip addresses to pick up probes.
-- 
			       
Alan Hannan		      	    (402) 472-0241         MIDnet Inc.
------------------------------\ fax (402) 472-0240   A Global Internet Company
" All perception of truth is   \_________________________
  the detection of an analogy " -- Henry David Thoreau   \____________________  


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