I recently need to deploy BGP EVPN and it was expensive to use devices like juniper and cisco. I used “FRRouting” that is open-source and free for use. FRR command line is very similar to cisco CLI but creating interface VLAN, NVE and VRF should be done in Linux itself. To simulate FRR you can use GNS-3, I have found this link helpful in this case: https://www.gns3.com/marketplace/appliances/frr Here is…
ِDebug command in cisco devices is one of the best tools for troubleshooting, but sometimes after solving a problem or something else we log out and forgot to turn off the debug. sometimes this happen could made the router in trouble. I prepared this script to check online users in line VTY and turn off debugging if no active user exists on the router. Substitute your IP address and user…
The virtual port channel (vPC) technology that is used by the Cisco Nexus 5000 and 7000 Series switches enables Multichassis EtherChannels (MECs) to be formed between a network device and two separate physical chassis. vPC technology allows logical loop-free Layer 2 topologies to be created, which prevents Spanning Tree Protocol (STP) from blocking any of the ports in the network topology This Picture shows every types of vPC that implements…
Here is the IPTable Cheat Sheet, Iptable is a rule based firewall system and it is normally pre-installed on a Unix operating system which is controlling the incoming and outgoing packets. Download IpTable Cheat sheet
