In the last part we looked at some of the common failure scenarios in vPC and what they will do to connectivity. Now, we are going to look at the priority of the switches in more detail and starting adding some more meat into the vPC domain configuration. This is Read more…
Cisco Nexus vPC – Part 2 – Common Failure Scenarios In the last part we looked at the core concepts of vPC and then setup a couple of switches in a vPC domain and connected a downstream switch. Now, we are going to look at some common failure scenarios of Read more…
This guide marks the first of a few guides related to Cisco Nexus vPC. Standing for Virtual Port-Channel. This is very much like the well-loved Stackwise concept for Catalyst switches. However, instead of the devices becoming a single logical switch with one management plane, the devices stay individually managed. vPC 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 the topology. Vlan Configuration Firstly, we need to configure a 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: Anycast gateways will be configured on each of the leaves using a virtual mac address so that mobility 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 setup is isolated to the leaves as the spines are 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 the topology: The BGP setup will have the spines as 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: The switches are all Nexus C9300v running NX-OS version 9.3(8). 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: We are currently running Phase 2. So we are forming 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 to be in the control plane path for the setup Read more…