I have two Ubuntu virtual machines X and Y.
x has Open vSwitch and floodlight running on it and the Y vm acts as a host.
I have a Host-Only adapter and a NAT adapter attached to X vm. and the Y vm has only a Host-Only adapter.
the host only adapters of X and Y vm's are in the same subnet.
now I want to connect the Y vm to the internet through the OVS running on X vm.
is it possible?
if yes, how?
To get internet connectivity to the host machines only through the Open vSwitch,
USING DHCP
1: add the interface connected to internet(say eth0) on the OVS machine to the OVS bridge.
2: change the ip address of eth0 interface to 0 and get a dhcp ip to the bridge interface using dhclient
3: add the interfaces that are connected to the hosts to the OVS bridge
4: get dhcp ip's to the hosts by using dhclient on the host machines
USING custom IP addresses
1: add the interfaces connected to the hosts and the interface connected to the internet to the OVS bridge
2: make the internet interface ip as 0
3: set the bridge ip address to the ip address that was previously assigned to the internet interface
4: make sure you have the host ip addresses in the same network address range as the bridge IP address.
The easiest way to test openflow servces is to use mininet emulator. Here is a tutorial on how to use it.
http://mininet.org/walkthrough/
Related
I have built two VM, and both use the same network configuration which are NAT for the first network adapter, and Host only Ethernet Adapter for the second adapter.
This is my network configuration for both VM :
First VM
eth0 : dhcp
eth1 : 10.0.0.10 255.255.255.0
Second VM
eth0 : dhcp
eth1 : 10.0.0.20 255.255.255.0
How to solve the problem? should i do or reconfigure something?
In VMWare, Host-Only mean VM's can ONLY network with the host, not other vm's. but in Parallel Desktop and VirtualBox it work.
So in a simple way, if you want to block the network between Second VM and Internet, you could choose NAT and set some firewall with iptable on host.
In VMWare website, you should route between Two Host-Only Networks like this link.
There is more information about Host Only Network.
I have a Soft PLC running inside a VMWare environment (Guest - Windows 8).
I want to connect to it from the Host (Windows 10) using the internal connections without having to set up a physical network switch.
My understanding of the documentation states that this should be achieved by Host only networking
https://docs.vmware.com/en/VMware-Workstation-Player-for-Windows/15.0/com.vmware.player.win.using.doc/GUID-93BDF7F1-D2E4-42CE-80EA-4E305337D2FC.html
And I've my PC Set up as:
The Network card in the Guest is set up as 192.168.0.244
On the Host, the network VMNet1 (Should be the DHCP Server) is Dynamic (DHCP) and resolved to 192.168.67.1 and VMNet8 (Should be the connection to the Guest) is also DHCP and has resolved to 192.169.73.1
All subnet masks are at 255.255.255.0 (DHCP defined?)
Even if I assign VMNet8 or VMNet1 to physical IP at 192.169.0.1 or 192.169.0.244 or 192.169.0.1 or even 192.168.0.12, I cannot ping the network card inside the host.
Am I missing something here with my setup? What am i doing wrong or has anyone got a step by step process for setting up a direct network connection between the Guest and host for testing communications without an external switch?
(I've disabled teh network connections between each setting change)
Found the issue.
The VM should have been set to NAT
The Network address of the adapter Inside the Guest set to the IP address I'm looking for
On my Host - VMNet 1 left alone as this is the DHCP Server
And set the VMNet 8 (Bridged connection between Guest and Host) to an IP address within a range of the subnet
And after disabling and re-enabling the connections, I can ping the PLC (192.168.0.1) running in simulation on the Guest from outside in the Host.
(Allows me to test node-red on the host connecting via OPC to PLCSim Advanced running on the Guest).
I have this very cheap all in one machine (modem + wifi router) provided by my service provider. I have disabled the wifi on it and bought a netgear nighthawk. Now i am trying to set it up that some devices are connected to wifi and some are connected using wire to the modem. I am trying to figure out how i can have DHCP enabled on both machine and also have access to machines connected to modem. So my setup is as follow.
Modem has 4 LAN ports and have 3 devices and the the nighthawk wifi router connected to it. The access IP of the modem is 192.168.1.1 and starting IP is 192.168.1.2 with subnet mask 255.255.255.0 and have DHCP enabled to provide IPs to everything connected to it.
The WIFI router access IP is IP 192.168.0.1 has starting IP 192.168.0.2 with subnet mask 255.255.255.0 and DHCP enabled to provide IP to everything connected to it.
I would like devices connected to WIFI router to have access to devices connected to Modem and vice versa.
Can someone help me figure this out.
On your configuration you have 2 NAT one from the ISP and another one from your access point/router (nighthawk). Meaning that you have 2 networks with different IP ranges.
This is how I configure the LAN when I have multiple routers to extend the coverage.
Assign an IP address to the nighthawk on the range of 192.168.1.x/255.255.255.0 ex 192.168.1.2
Disable the DHCP on the nighthawk
Connect your ISP router to a LAN interface on the Nighthawk.
What will happen is that your nighthawk will be just an access point, all the DHCP will be at the ISP router meaning that all ips will be on the same range. If you connect your ISP to the Nighthawk WAN interface it is going to go nowhere because some of them are programmed to do a NAT between the Lan an Wan interfaces.
I also configure the DHCP to assign ip's from 192.168.1.100 to 192.168.1.200 range, all devices from 1 to 99 are routers, access points, servers, cameras, printers or devices that need an static ip address. Then I have segments ex. routers are 1-9, printers 10-29, etc etc. By doing this I will now what device is or their purpose on the network.
Hope it helps.
In GNS3, I have configured the DHCP pool on the router R1, and I have a vmware VM (Ubuntu 16.04), another router R2 and VPCs are connected to R1. The R2 and VPC can get their IP address without a problem, however, the vmwareVM can't receive the IP address.
Note that:
the station is configured as host-only
the connect a host virtual adapter to this network is checked
the VMware Workstation DHCP Server is turned OFF
No configuration on my local PC Network Connections (DHCP)
Once I type the command dhclient eth0 to get the IP address from dhcp, it freezes and returns nothing and no IP address is assigned.
I want to know what is the problem that causes that issue and how to solve it.
Thank you.
My mistake was in the configuration of my VMware network adapter (VMnet2) in my network adapter in my host.
so in order to get the IP address from the DHCP router: I did the following steps:
Create a virtual network (VMnet2) in the virtual network editor
of VMware.
I checked the "Host-only" option
I checked the
"connect a host virtual adapter to this network" option
Uncheck the "use local DHCP service to distribute IP address to VMs".
Do not change the default configuration of the VMnet from your
network connexion options.
I hope that will help someone has the same issue as me
I am running proxmox 4 with around 10 KVM and 14LXC.
I can configure ips and network from web GUI for LXC container.
I want to configure the Network interface For KVM without accessing the VM.
Is is possible to configure Network interface without accessing the VM.
As far as I know you can't configure the IP address in proxmox for a KVM vm (only for the lxc container you can define the ip address). For a KVM vm you can configure if the network connection is in Bridged mode or NAT.
For LXC containers you can use the pct command to set network for the container. More info about that on the Proxmox WIKI (scroll down to the Network section) - https://pve.proxmox.com/wiki/Linux_Container
What you could do for KVM would be to use a local DHCP server (you can install one on your proxmox if you want (apt-get install isc-dhcp-server). You have to define an ip address pool that will be assigned to your vms by the dhcp server.
Then configure the kvm machine using: qm command
qm set vmid options
From a man qm you discover this:
-net[n] [model=]<enum> [,bridge=<bridge>] [,firewall=<1|0>] [,link_down=<1|0>] [,macaddr=<XX:XX:XX:XX:XX:XX>] [,queues=<integer>]
[,rate=<number>] [,tag=<integer>] [,trunks=<vlanid[;vlanid...]>] [,<model>=<macaddr>]
So basically you can define the network for your kvm vm, say if it's bridged, set a specific mac address for that card.
If you want to add a specific ip to that vm you can do it based on its mac address (you have to configure in the dhcp server that a specific ip address is assigned to the desired mac address).