From: Scott Vermillion (scott_ccie_list@it-ag.com)
Date: Thu Aug 30 2007 - 01:18:22 ART
Hi Brian,
I know that I am being really thick here. I should probably just figure
this out once I get an actual lab going, it all might make a little more
sense that way. What I am doing is emulating all routers - including the
TermServ - on the Mac Mini. On a Windows box, you have TermServ E0/0
mapped to the 169.254.0.1 loopback. I tried to do essentially the same
thing on the Mac but the built-in lo0 is set to 127.0.0.1 and I don't
think I want to change that. So I was just hoping to create an lo1
instead and give it the 169 address. But perhaps this is all silly and I
shouldn't even bother with this? I can telnet all of the routers sans
TermServ, obviously. I was just trying to keep things as near to the
original topology/configuration as possible. Since I went w/ 3560-8s, I
already have some deviations. But this is too much effort for very
little gain that I can see, now that I've thought it through...
Regards,
Scott
-------- Original Message --------
Subject: Re: OT: Loopbacks on Mac OS X
From: "Brian Dennis" <bdennis@internetworkexpert.com>
Date: Wed, August 29, 2007 9:44 pm
To: "Scott Vermillion" <scott_ccie_list@it-ag.com>, "Cisco
certification" <ccielab@groupstudy.com>
Scott,
If you are going to access the Dynamips server remotely you should
use
the real interface to map the access server's Ethernet interface to.
Also as a side note you may run into issues when trying to get a
Dynamips router to talk to the local NIC that it's mapped to. There
are some solutions (not pretty ;-) if you need to communication
directly between a Dynamips router and your Mac but normally this
isn't
needed unless you are trying to access the terminal server from the
same Mac.
Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
>----- Original Message -----
Subject: OT: Loopbacks on Mac OS X
Date: Wed, August 29, 2007 19:44
From: "Scott Vermillion" <scott_ccie_list@it-ag.com>
> Hi all,
>
> Well, I finally received my 3560-8PCs today! And my Mac Mini is
pretty
> much up and running as I need it. However, I need to create a
loopback
> address for connectivity to the TermServ router in the IEWB
topology. OS
> X ships w/ an lo0, but it's set to 127.0.0.1 and I cannot put the
router
> at 127.0.0.2 (IOS disallows this address). I have tried doing
'ifconfig
> lo1 create blah blah blah' but I'm getting "invalid argument"
errors.
> Anybody have any idea how to create a new loopback interface in OS
X?
>
> Thanks much all,
>
> Scott
>
>
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