In this part we are going to look at the L2VNI setup of the topology. This is basically the VLAN setup of the topology where we can define the vlans in use. Lets remind ourselves of the topology: The L2VNI Read more…
In this part we are going to look at the EVPN overlay setup of the topology. This allows the sharing of the layer 2 information learnt at each leaf switch. For this, we will use BGP. Lets remind ourselves of Read more…
In this series of guides, we will be completing the setup of a VXLAN fabric. In this part, we will look at the topology and setup the underlay network using OSPF. Here is the topology we will be working with: Read more…
In my 3 part guide for DMVPN where we looked at Phase 1 to 3. I showed some output from the ‘show ip nhrp’ command like the below: In this guide, we will go through what the flags in these Read more…
Building on from the previous guide on DMVPN Phase 2, we are going to transition from Phase 2 to Phase 3. This is only really relevant if you are doing summarisation at the Hub. Lets remind ourselves of the topology: Read more…
Building on from the previous guide, we are going to transition from DMVPN Phase 1 to DMVPN Phase 2. This will bring some important improvements and some considerations. Lets remind ourselves of the topology: The Hub is still always going Read more…
In this guide, we will setup DMVPN Phase 1. In that we have one central hub, with multiple spokes. Spokes will learn about both Hub and other Spoke prefixes via EIGRP. Spoke to Spoke traffic is permitted, however the Hub Read more…
In this guide, I will show how to implement basic Policy Based Routing on a Layer 3 Switch. Here is the topology we will work on: In this scenario, we have two routers connected to a core switch. We then Read more…
When using BGP and peering with multiple ISPs at the edge, you can use a feature within BGP that allows you to advertise networks to a neighbour dependent on the existence of a route in the BGP RIB. This is Read more…