After some testing using qemu and tap/sockets interfaces i was able to connect two instances of IOS-XRv with Dynamips instances, Junos Olive instances and my host laptop adapters. Basic routing protocols (IGP and BGP) and MPLS seem to work without issues.
QEMU documentation. The main documentation section is the first place to go in case you have questions about using QEMU.. Most of the documentation is generated automatically from the QEMU git source tree, however some text files have not been converted to the new format yet. $ qemu-system-x86_64 -hda imagefile.img -net nic -net tap,ifname=tap0,script=no,downscript=no ifname=tap0 - the tap name here corresponds with the name in the bridge stanza above. script=no,downscript=no disable the scripts /etc/qemu-ifup and /etc/qemu-ifdown as they are not needed. TAP operates at the data-link layer, and TUN at the network layer. QEMU can use the TAP interface to provide full networking support to the guest operating system. Before this, we need to install the VPN (Virtual Private Network) package on the host machine, and set up a bridge between the host and guest OS. Feb 18, 2017 · You need to install the OpenVPN tap driver, bridge it with your normal ethernet connection and use the following in the qemu command line: -netdev tap,ifname=TapEthernet1,id=network01 -device sungem,netdev=network01 (and replace “TapEthernet1” with the name of the tap device network connection) Running two qemu instances with networking Start qemu with the command line: qemu -L. -hda olpc.img -net tap,ifname=TAP -net nic Use Ctrl-Alt-3 to get a command prompt. Login as root and run 'dhclient'.
From QEMU wiki, QEMU doesn't support ICMP on the SLIRP backend. User Networking (SLIRP) This is the default networking backend and generally is the easiest to use. It does not require root / Administrator privileges. It has the following limitations: there is a lot of overhead so the performance is poor
QEMU can use tap networking for a virtual machine so that packets sent to the tap interface will be sent to the virtual machine and appear as coming from a network interface (usually an Ethernet interface) in the virtual machine. Conversely, everything that the virtual machine sends through its network interface will appear on the tap interface. For details, please see the QEMU documentation. Tap. The tap networking backend makes use of a tap networking device in the host. It offers very good performance and can be configured to create virtually any type of network topology. Using TAP network interfaces ¶ This is the standard way to connect QEMU to a real network. QEMU adds a virtual network device on your host (called tapN), and you can then configure it as if it was a real ethernet card.
For details, please see the QEMU documentation. Tap. The tap networking backend makes use of a tap networking device in the host. It offers very good performance and can be configured to create virtually any type of network topology.
Start qemu with the command line: qemu -L. -hda olpc.img -net tap,ifname=TAP -net nic Use Ctrl-Alt-3 to get a command prompt. Login as root and run 'dhclient'.