Good news ! Cisco has released a free version of their Cisco Modeling Labs (CML) v2.8 – named CML – Free. This frree vesion is for single users and no license is required. It allows to run up to five…

In this article, I will set up a simple LAN network consisting of two PCs, one Mikrotik box that acts as a L2 LAN switch, and one Cisco router that connects everything to the internet using NAT. PCs and Mikrotik…

In this article, as the RouterOS CLI newbie, I will set up a simple LAN network consisting of two PCs, one Mikrotik box that acts as a simple L2 LAN switch, and one Cisco router that connects everything to the…

This config example shows how to configure three DHCPv6 pools for a network setup, where the DHCP server is running on a remote router. This situation had emerged during my remote CCNA lesson and it found me unprepared. The main…

You need to have console cable connected to DB9 port, USB console (USB – serial) does not work. Power cycle switch. During booting, wait for Checking all filesystems…. Then press Ctrl + ]. Then, yo will be logged into switch(boot)#…

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…

If we are able to log in as root, type : configure username root secret YOUR_NEW_SECRET commit

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…

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…

Configuration of L2TP over IPsec tunnel connection with Cisco router as a server and MikroTik router as a client. (config)#int loopback 0 (config-if)#ip address 192.168.1.1 255.255.255.255 (config-if)#exit (config)#ip local pool l2tp-pool 192.168.1.5 192.168.1.10 (config)#vpdn enable (config)#vpdn-group l2tp-group (config-vpdn)#accept-dialin (config-vpdn-acc-in)#protocol l2tp…