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One of the most interesting feature of DMVPN as far as my personal opinion goes is its extended support for VRF on MPLS networks. Remember, VRF allows multiple instance of routing tables to co-exist on the same router at the same time. Having said that, DMVPN helps scalling out tradional IPSEC hub-and-spoke VPN configuration by [...]
Pre-requiste: Understanding of the 802.1Q Protocol The purpose of this post is to shed a light on how QinQ Vlan takes place in a bridged network environment. Before continuing, it is important to keep in mind that 802.1QinQ or 802.1ad isn’t a defined protocol in itself but a mere amendment of the already existing 802.1Q [...]
I am not going to go over in details on the hoods of PPP (another post will be written for this purpose). A deep understanding of Point-to-Point WAN networks isn’t required as we will barely scratch that surface when dealing with the “unnumbered IP command”. So what is the unnumbered IP command? The unnumbered IP [...]