Nick's Technical Knowledge Base

So, now we have external connectivity fully working, lets have a look at a failure scenario and how we can put some config in to resolve. Lets take a look at the topology: The issue In the event that a Read more…

So, now we have external connectivity working, but there is a certain scenario where it breaks. Lets take a look at the topology: The issue If we were on either server-3-vl10 or server-4-vl20 and the LACP hashing decided to forward Read more…

In the last part, we got route leaking in tenant VRFs working, in this part, we will look at giving the VRFs a way out of the Fabric! We have added some new devices to the topology: We can see Read more…

In the last part, we got a multiple tenant VRFs working, in this part, we will look at joining the tenants up via route leaking. Lets remind ourselves of the topology: So, currently we have our two VRFs with separate Read more…

In the last part, we got a single tenant VRF working, in this part, we will look at splitting vlan 20 off into its own separate Tenant to show a multi-tenant setup. Lets remind ourselves of the topology: I have Read more…

In this part we are going to look at the L3VNI config to get the hosts in the two vlans talking to each other. Lets remind ourselves of the topology: All of the configuration below is for the Leaves in Read more…

In this part we are going to look at the anycast gateway setup of the topology. This will help get the servers off their local network. Lets remind ourselves of the topology: The layout itself hasn’t changed. However, server3 has Read more…

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…