From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Thu Aug 30 2007 - 13:35:34 ART
Scott,
You can add an additional IP address to Loopback0, but this still
won't solve your problem. From the TermServ instance you can talk to other
devices on the LAN, but not the Mac box itself. It looks to be a problem in
pcap, which Dynamips uses to interface with the NIC cards. Brian and I are
working on some workarounds for this for building our new reference topology
on the mac mini. I'll keep you posted on the progress.
HTH,
Brian McGahan, CCIE #8593 (R&S/SP/Security)
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987 x 705
Outside US: 775-826-4344 x 705
24/7 Support: http://forum.internetworkexpert.com
Live Chat: http://www.internetworkexpert.com/chat/
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Scott Vermillion
Sent: Wednesday, August 29, 2007 11:18 PM
To: Cisco certification
Subject: RE: OT: Loopbacks on Mac OS X
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
>
>
_______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Sat Sep 01 2007 - 11:32:13 ART