The page provides summarized and updated (2020) overview of simulation and virtualization tools suitable for the practice of networking teachers or researchers.
You need to have console cable connected to DB9 port, USB console (USB – serial) does not work.
Power cycle switch. During booting, wait for
This guide explains how to install the dig dns tool on windows 11 in a few steps. It is just a little bit modified version of How to install DIG dns tool on windows 10 howtos.
1. First download the latest Bind9 executable for Windows. All ISC software is available at https://www.isc.org/download/. However, there is a message, that the latest win executable is 9.6.23, which we may download from the link 9.16.23.
A few words about the setup. We operate a remote GNS3 server setup, where all components (server even clients) are version 2.2.25. The remote server is deployed in a Linux container.
We operate several IOS XRv 9k appliances that were in default state default during the import process. We notice the following problem. Running small topos with an IOS XRv, once the router is loaded it had no network interfaces.
If we are able to log in as root, type :
configure username root secret YOUR_NEW_SECRET commit
Graphical desktops (for example Mageia) usually run faster with more video memory, however VBox application (through setting menu) allows setup the maximal size of video mamory to 128MB only. We are able add more memory using command line. The maximal value is now 256MB.
Windows (tested under win 7 64bit)
1) go to the VBox install directory and start win command line there
This config example shows a Site-to-Site configuration of IPsec VPN established between two Cisco routers. VPN will use IKEv2 protocol with PreSharedKey (PSK) remote-site authentication. Topology simulates a Branch router connected over an ISP to the HQ router. There are several options for how to configure IKEv2. In this example, I’m using the symmetric PSK witch crypto map, where the IKEv2 process is started by identifying interesting traffic using ACL. I’m also not using GRE tunnel for routing interconnection of both sides, instead, simple static default routes are used.
Configuration runs on GNS3 emulator and I’m using the CSR1000v platform with version 16.12.01a IOS XE as the older ISR platform (7200 15.4 IOS) does not support IKEv2. On real devices, IKEv2 is supported on Cisco ISR Generation 2 (G2) that runs Cisco IOS software version 15.2(4)M or later (for example 29xx ISR), ASA with 8.4.(1) and later (including ASA 5510).
The example shows a simplified configuration of a Statefull NAT64 demo, without DNS64. I instruct the stateful NAT64 router (CSR-1 – CSR100v) to translate IPv6 packets into IPv4 packets (and vice versa) using algorithmic mapping (defined by RFC 6052) of IPv4 addresses of IPv4 routers to and from IPv6 addresses by using manually defined IPv6 prefix 2001:db8::/96). In a similar manner, the IPv6 addresses of IPv6 routes are translated to and from IPv4 addresses.
R1/R2 run 7200 IOS image., R1 is pure IPv4 router, on the other site, R2 is IPv6 only.
The OpenStack cloud enviroment will run at top of the operating system CentOS 7.9. Also it is necessary to provide at least 16GB of RAM.
- Installed free Oracle VM VirtualBox application, version 6.1.28r
- Installed guest virtual machine with Parrot OS.
Variant 1 => using official online parrot repo
sudo su - # update packages list and upgrade packages apt update && apt upgrade -y # install virtualbox guest additions from the Parrot repo apt install virtualbox-guest-utils # install the package apt install virtualbox-guest-x11 # reboot the system reboot
Now the resize should work.
Variant 2 => using VBox Guest addition image
Now we will install Vbox guest addition using VBox option.