Re: [Xen-users] Xen with NAT networking.

To:	Huagang XIE <huagangxie@xxxxxxxxx>
Subject:	Re: [Xen-users] Xen with NAT networking.
From:	Mark Pryor <tlviewer@xxxxxxxxx>
Date:	Wed, 9 Feb 2011 15:18:01 -0800 (PST)
Cc:	xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date:	Wed, 09 Feb 2011 15:19:07 -0800
Dkim-signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1297293481; bh=dr4P4ldN1gvmV/YHK2QsnkTC3lICpT78d0Nqvow5pSk=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=qXRRtJAzOOjhcxp7cTSmuVpqMjERMzoFB6xw+zOIzyN2BveVTAQHaXJtwUOXOtyyllSvBdmSZoa3VzqGPU/cQpWdA7sVYsnj2uCyh9vHfG09SKWIWfotoCd9/7ovAQbnaxsZhSEastHIsqbkCkcnfZ5Upi6UQ8+3t6Z+J33jR2o=
Domainkey-signature:	a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=3IOmhV3r0Ib/RBqzYIjFXJYpp4EzxZb1PLYuj1BooaPJrFt3BW+OH6V7+oJxB7Fqy7ar6yuy/eTkUB9IPsx+jY0LbVF3StsM3L2Z8EY1ccgxPEnVakSUy2jO6S6pCz/vIp4HrRn2hAZ6nxj66K/0ZnJ6DAWi5y5Lc+ACBvlxh2E=;
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to:	<AANLkTinCBxn2EBqpiJrfKCT=iB2o0MBuUfQZ3pAkOOJu@xxxxxxxxxxxxxx>
List-help:	<mailto:xen-users-request@lists.xensource.com?subject=help>
List-id:	Xen user discussion <xen-users.lists.xensource.com>
List-post:	<mailto:xen-users@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender:	xen-users-bounces@xxxxxxxxxxxxxxxxxxx


--- On Wed, 2/9/11, Huagang XIE <huagangxie@xxxxxxxxx> wrote:

> From: Huagang XIE <huagangxie@xxxxxxxxx>
> Subject: [Xen-users] Xen with NAT networking.
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Date: Wednesday, February 9, 2011, 2:34 PM
> Hello there,
> 
> I was trying to setup a XEN NAT. I think I follow all the
> instructions
> but still failed.
> 
> In NAT environment,  the tap.x is the gateway for the
> guest os, right?
> but the xen always set the
> gateway to vif.x, and the guest os will never be able to
> communicate outside.
> 

Gateway is at 10.0.0.254
so set your guest with
network 10.0.0.0
netmask 255.255.255.0

address 10.0.0.5   <--- your choice

whatever address you choose on the above network, must be set in both 
ifcfg-eth0 and in your domU config

vif = ['ip=10.0.0.5,mac=00:16:3e:aa:bb:cc']

> 
> Does anyone here successfully configure a NAT networking
> with XEN? I
> am using Xen 3.4.3 and also trying 4.0.1 under Centos 5.
> 

yes, but in addition to above comments add:

echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf

-- 
Mark






_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users

WARNING - OLD ARCHIVES

xen-users

Re: [Xen-users] Xen with NAT networking.