Dan,

I would suggest you to use external proxy/GW to hide you network. Not the same 
host that contains management server. Because if you would like to scale it up 
- how do you do it?? Management server should be rather simple component of 
infrastructure and to put more functions on it is a bad idea.

Anyway 
1. what does "route -n" says on your SSVM ??  
2. If you use KVM your bridges tag the traffic. Are you sure that it is 
properly handled on your switch?? Run "arp -a" at your SSVM and see if VM 
"knowns" MAC of the gateway. 

I do expect you put the output of route and arp here otherwise we will continue 
guessing.

It would be even better if you describe your network layout like on the first 
picture here: 
http://cloudstack-administration.readthedocs.org/en/latest/networking_and_traffic.html

Vadim.

-----Original Message-----
From: Dan Dong [mailto:dongda...@gmail.com] 
Sent: Tuesday, November 18, 2014 5:23 PM
To: users@cloudstack.apache.org
Subject: Re: To let SSVM reach outside network.

Hi, Vadim,
  We have to use 2 NICs on the management server as we want to hide the 
cloudstack cluster behind the 10.* network, so all KVM hosts and guest VMs are 
in the 192.168.0.* subnet, and they connect to the management server's internal 
NIC(192.168.0.100). Is it a rule that the management server can only use one 
NIC? And the KVM hypersior host can reach the internet and download packages, 
but SSVM running on it could not see the internet.

Cheers,
Dan


2014-11-18 3:20 GMT-06:00 Vadim Kimlaychuk <vadim.kimlayc...@elion.ee>:

> Hello Dan,
>
>         It seems there is something wrong with your network setup and 
> here are some places to search:
> 1. Why your management server has 2 NICs?  It should not work as NAT, 
> proxy or any kind of switch - keep this in mind.
> 2. SSVM normally has to have 3 interfaces (at least). One -- with 
> public IP, one -- management network IP and one -- link local IP. If 
> you have separate storage network -- it may have one more, but this is 
> not your case. Check routing table for your SSVM with "route -n" 
> command. Find your default gateway. It should be public interface.
> 3. Did you set up KVM hypervisor network correctly? Does it have 2 
> interfaces like in the setup guide? Does your hypervisor have access 
> to internet to be able to download template?
>
> Vadim.
>
> -----Original Message-----
> From: Dan Dong [mailto:dongda...@gmail.com]
> Sent: Monday, November 17, 2014 7:02 PM
> To: users@cloudstack.apache.org
> Subject: To let SSVM reach outside network.
>
> Hi, All,
>   I found I could not register my ISO image to the cloudstack( through 
> URL of http://releases.ubuntu.com/14.04.1/ubuntu-14.04.1-server-amd64.iso).
> The SSVM is running and health check show no problems on it. But it 
> just could not see the outside network, although SSVM is on the same 
> network as KVM host, i.e. 192.168.0.*. My setup is as following:
>
> Management Server external NIC:10.*
> Management Server internal NIC: 192.168.0.100
>
> KVM host NIC: 192.168.0.101
> guest VMs are all in 192.168.0.*/24 network.
>
> From SSVM I can ping the internal IP of the Management Server at 
> 192.168.0.100, but could not ping the external IP of it at 10.*.
>
> From KVM host itself I can reach the outside internet as NAT is 
> configured on the Management Server to let the 192.168.0.0 traffic 
> through. Any hints how to let SSVM to reach the internet?
>
>
> Cheers,
> Dan
>

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