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How To Setup Networking For KVM Guests


I have a server with CentOS 5.4 with 5 IPs. Now i want to spare 1 IP for the host, and create 4 virtual machines, each with 1 dedicated IP and has direct access to internet (virtual machines created with KVM come with NAT as default)

Anyone can point me to a tutorial or tell me how to setup networking for this ? Working over GUI is not possible since i only have ssh access and don't want to install X just to install things. Is it possible to use Xen networking scripts for KVM guests ? I have tested Xen on my server and its default networking setting worked ie with guests have direct connection to internet.


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Here is my last reply. I tried to make it real simple for them to understand.

This does not address the issues. Do you even know what a virtual
machine is? It is a virtual computer running on the host computer.
The host computer has a valid ip address of 70.xx.15.171, sm:
255.255.255.224 gw: 70.xx.15.161. The virtual machines (or guest
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reach the gateway of the host pc 70.xx.15.161. You have to understand
the Virtual Machine operates as a completely separate computer. It
requires its own gateway. with no gateway specified it has no way to
get out of its local subnet to get to the 70.xx.15.x subnet. What
happens if you put two physical computers on one hub. The computer on
port 1 of the hub has the IP info 70.xx.15.171 SM: 255.255.255.224 GW
70.xx.15.161. The second computer is on port 2. It has the ip info
of: 70.xx.18.249 SM: 255.255.255.248 GW: NONE.
How is the pc on port 2 going to communicate with the pc on port
1? This is the exact situation we are in. There has to be a
gateway to route the IP traffic from pc2 to pc1 to get onto the
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APC seems to be the golden standard for switched PDU.

We are looking at a Tripplite B060 IP KVM

For all you KVM gurus, that have played with various brands, love to hear feedback on the various makes out there.

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IPMI With KVM Over LAN
What are the benefits of IPMI with KVM Over LAN? Is it more of a benefit for the datacenter? Or does it have benefits for someone that has collocated there server a far distance away?

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Avocent KVM With HP Adapters
I bouth a new Avocent DSR2161 KVMovIP Switchs and I'm having a little problem. Since I know Dell/HP/Avocent (and maybe some other else) use the same type of hardware to make this KVM Switchs, including the local System (OSCAR).

With this switch I bouth 16 KVM CAT5 PS/2 Adapters from HP.
When I connect them to the KVM Switch it shows a Green Light that means there is a cable in there but the orange light (I think it's the "act" light is turned off. In OSCAR no adapters appear.

When I plug in/out a adapter using a firmware v3 (latest Firmware from Avocent) it says (in debug mode):

rcmProcessRipPortStatusMsg: port 7
rcmRequestRipTableEntry: port 7, chan 1
rcmProcessRipTableMsg: old packet type!
RIP STATUS(RipTable) port:7 chan:1 In0 On1 Rip1 UA1 Up0 STS=71
rcmProcessRipTableMsg: port 7, chan 1, swChannels 0
rcmProcessRipTableMsg: ERROR RIP not found!

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SecureLinx Spider KVM
There are 2 versions of this KVM

- one with USBs only http://www.provantage.com/lantronix-...1~7LANB01T.htm

- one with USB and PS/2 http://www.provantage.com/lantronix-...1~4LANB01R.htm

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KVM Over IP For Multiple Servers
We are looking for KVM/IP solution for multiple server. Where we can add the users remotely and give temporary access to the server owners. Once they are done we remove them from access list. So it can be used by someone else.

Anyone know for KVM/IP solution with kvm switch which can solve our purpose of KVM.

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KVM-over-IP For BIOS Access
We are using a AdderLink IP which is connected to some AdderView Matrix KVM Switches.

The big problem is, that the AdderLink IP is quite slow switchting to the right screen resolution. This means, I have no chance to access the bios, because before I can press the DELL button to enter the bios, I have to syncronise the screen resolution to get access to the Keyboard and press the DELL button. But the syncronisation takes about 5 seconds and therefore I'm too late pressing the DELL button.

Now I search a better KVM-Over-IP box, which I can connect to my AdderView Matrix KVM Switches. It's very important, that I don't need to synchronise anything before I can use the keyboard.

Can someone recommend such a box which don't need to syncronize at all? Or how are other companies accessing the bios?

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Belkin KVM/IP Review
I am considering purchasing a Belkin KVM/IP unit I found on craigslist, and I'm just wondering if anyone has any experience with them and can give me their opinion of them?

The one I am looking at is this model:

[url]

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KVM Easy And Fast
What's the latest KVM technologies that's easy to use and have fast response time?

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Startech SV1115IPEXT IP KVM
Wondering if anyone has used any of Startech's IP KVM products. In particular I am looking at the SV1115IPEXT here: [url]

What I am aiming for is a device that I can have remote hands just plug into a machine video, keyboard, mouse, and USE for remote image mounting (to simplify remote hands for the 'not so talented' 24-hour support in the DC).

Anyone have any experience using a IP KVM for this purpose? If so how well does it work for actually getting into the BIOS and booting off a remotely mounted image (considering the image is local on at least 100mbit ethernet)?

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Who Offers KVM With Virtual Media?
I use Virtuozzo with layeredtech, and since I'm on the move anyway, thought I'd like to try out some different Virtualization products before the migration.

Allot of these products like bare-metal installs though... which is why I'm particularly looking for "virtual media" on the KVM.

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