Re: [Xen-users] XCP

[Scott Damron <sdamron@xxxxxxxxx>]

Don't take this the wrong way - but - WHY would you use DHCP for a
VoIP or other server?  Are you running these on site for a customer,
or are they in a data center?  The issues with running any kind of
server via DHCP are beyond the scope of this group I believe.  There
may be a few folks who can provide you with some ideas, but over all,
I would say you are on your own.

On Fri, Dec 23, 2011 at 12:51 PM,  <frank@xxxxxxxxxxxxxxx> wrote:
> Hi,
>
> I have deployed three machines in recent months all of which are loaded with
> XCP 1.0.  These machines are functioning very well in real commercial
> environments.  I intend to deploy further machines in 2012.  All of these
> systems are running MS SBS2011 in a VM and also Trixbox Asterisk based voip
> telephony in another VM.  I am getting fed up,  however,  with
> inconsistencies from commercial ADSL routers which screw up voip and which
> do not provide QoS which is good enough so I have decided to use ADSL
> Ethernet modems instead and perform all routing, firewall and QoS functions
> inside the XCP box.  To that end I have set up an experimental XCP 1.0 box
> with 2 NICS and I have set up iptables on the host machine to perform NAT
> (masquerade) forwarding the entire internet (DMZ) onto the public side of a
> zeroshell VM (firewall) which will allow an easy way to open and close ports
> and which also performs excellent QoS.  The reason why I want to perform a
> NAT masquerade on the host itself is so I can get locked down SSH access to
> the host itself so that in an emergency I can start and stop VMs or even
> reboot if necessary.
>
> All this I have successfully implemented and it all works well.  The only
> fly in the ointment is if the box is connected to an ISP which only provides
> a dynamic IP address.  I have used xe pif-reconfigure-ip to set the external
> interface to dhcp and it does indeed lease an IP address from the ISP.  What
> it does not do however, is to get the gateway address from the ISP.  If I
> connect other boxes (linux or windows) to the internet connection they all
> get a gateway address – but not XCP.  Because I am able to work out what the
> gateway address is I have added it manually at the cli using the route
> command and  internet access then works  – but this is not a solution – only
> a workaround - and if the IP address changed the box would be on the wrong
> gateway.  It would be really great if someone could shed some light on what
> is going on.
>
> BTW.  I have not defined a gateway on the management interface so there is
> only one gateway on the machine.
>
> Kind regards,
>
> Frank.
>
>
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