Questions tagged [virtual-network]

A virtual network is a computer network that consists, at least in part, of virtual network links. A virtual network link is a link that does not consist of a physical (wired or wireless) connection between two computing devices but is implemented using methods of network virtualization.

A virtual network is a computer network that consists, at least in part, of virtual network links. A virtual network link is a link that does not consist of a physical (wired or wireless) connection between two computing devices but is implemented using methods of network virtualization.

The two most common forms of network virtualization are protocol-based virtual networks, (such as VLANs, VPNs, and VPLSs) and virtual networks that are based on virtual devices (such as the networks connecting virtual machines inside a hypervisor). In practice, both forms can be used in conjunction.

Virtual LANs (VLANs) are logical local area networks (LANs) based on physical LANs. A VLAN can be created by partitioning a physical LAN into multiple logical LANs using a VLAN ID. Alternatively, several physical LANs can function as a single logical LAN. The partitioned network can be on a single router, or multiple VLAN's can be on multiple routers just as multiple physical LAN's would be. A VLAN can be on a VPN.

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How to create a Virtual Machine in Microsoft Azure without PUBLIC VIRTUAL IP (VIP) address?

Is there any way to create a virtual machine without Public IP address in Windows Azure? Even if you are creating a VM in virtual network we cannot control the Public IP assigned by Azure. Is there any way to disable or delete the public IP…
Nithin
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Access KVM VM over the network from a Docker container

KVM is used to host some VMs in the network 192.168.2.1/24. Docker is running on the same machine in 192.168.3.1/24. I need to configure networking so that Docker containers can access a KVM VM. For testing purpose I have two machines, each running…
Lion
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Linux network namespaces and connecting from Java program using Linux network namespace

Let suppose we have two network namespaces that belong to the same subnet. In this context I mean same IP address but different routes it needs to take to get to. ip netns add myns1 ip netns add myns2 And Java program is running in Linux global…
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Subnet is not contained within the adress space for the vm

I created a VN of address space 10.1.0.0/16 and a subnet of 10.0.1.0/24. I'm getting the address space error. I tried VN 10.0.0.0/24 and it worked. I wanna know why? Why did the 1st subnet failed and the 2nd passed? How is this address space…
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Open vSwitch configuration by Python?

How to configure Open vSwitch (OVS) by python ? Usually, I use shell commands to configure an Open vSwitch without OpenFlow controller. For example, ovs-vsctl --may-exist add-br br0 ovs-vsctl --may-exist add-br br1 ovs-vsctl set bridge br1…
takaomag
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ovs-ofctl add a flow to allow only ARP ethernet frames

I am starting to learn SDN with ovs-ofctl and mininet, and I am configuring a switch following some tutorials, but there's something I don't catch. When I start my topology with: sudo mn --topo single,2 --controller remote --switch ovsk Now if I…
juan carlos
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How to connect a tap interface to the internet?

As a personal project I want to build a TCP/IP stack using C/C++ and using a tap interface. I have a wlan0 interface (wireless) that is connected to the internet. And now I want to send and receive packets from the internet through this wlan0…
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Bash script to dynamically create virtual network interfaces

I'm writing a bash application that runs on a cluster of Ubuntu 18.04 servers and provisions and syncs user accounts across several servers deployed in different geographic regions. The server allows users to be redirected to the appropriate…
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Virt-manager gives out only one ip for guests. Steals the IP from previous guest

I'm completely new to KVM and virt-manager. I tried to have multiple Ubuntu 18.04.3 VM's. In the end they should be accessed from the hosts network. If I'm right I need a routed network setup to achieve this. But I have a different problem before…
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How to create a virtual network interface on a remote machine bridge to an interface on a local machine?

I have a local Linux machine (L), with a network interface (eth0) connected to (currently) only one device (D). L/eth0 only has an ipv6 link local address. D also only has an ipv6 link local address. Client software on L discovers D's link local…
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DC/OS marathon Virtual network not working

I installed DC/OS with 3 masters and 3 agents and face a problem with virtual networking. Here is my Marathon app spec: { "id": "/nginx", "cmd": null, "cpus": 1, "mem": 128, "disk": 0, "instances": 1, "container": { "type":…
vimal prakash
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In which scenario you need to create multiple Azure Virtual Networks and Subnets?

if someone can give me a industry example on why do we need multiple Virtual Networks and Subnets?
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Is there a way to relay veth in docker to remote host by tunnel?

I do not want the docker to access my host LAN or internet directly by NAT. Is it possible to provide a tcp or udp tunnel to relay the veth in docker to the remote proxy? So that the docker can not access my local network resource and can use the…
progquester
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Cannot access host ports via a IP address on virtual NIC created by Hyper-V

I'm using the Default Switch as the virtual NIC, and after had a read of plenty of resources related, I get that Default Switch is connecting to a virtual switch that created by Hyper-V. So there're two adapters at my host and the virtual machine, I…
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What is the simplest way to get vagrant/virtualbox to access host services?

I've been reading through many examples (both here and through various blogs and virtualbox/vagrant documentation) and at this point I think I should be able to do this. What I ultimately would like to do is communicate with my docker daemon on my…
Niko
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