Blog posts
Step-by-step lab guides. Each was written on the software versions it names, on the date shown.
VXLAN EVPN Leaf and Spine¶
- Part 1 - Underlay Setup (21 May 2023)
- Part 2 - Overlay Setup (21 May 2023)
- Part 3 - L2VNI Configuration (21 May 2023)
- Part 4 - Anycast Gateways (21 May 2023)
- Part 5 - L3VNI Configuration - Single Tenant (21 May 2023)
- Part 6 - L3VNI Configuration - Multi Tenant (21 May 2023)
- Part 7 - L3VNI Configuration - Multi Tenant Leaking (21 May 2023)
- Part 8 - External Access outside Fabric (21 May 2023)
- VXLAN EVPN Leaf and Spine - YouTube Video (28 Jan 2024)
- Using PIM BiDir Phantom RP (13 Dec 2024)
- Interpreting VXLAN EVPN BGP Output - Type-2 Routes (21 Dec 2024)
- Interpreting VXLAN EVPN BGP Output - Type-5 Routes (not previously published)
- PIM BiDir Phantom RP Load Sharing (not previously published)
Device configurations: external.txt, leaf-1.txt, leaf-2.txt, leaf-3.txt, phantom-rp-loadsharing/leaf-1.txt, phantom-rp-loadsharing/leaf-2.txt, phantom-rp-loadsharing/leaf-3.txt, phantom-rp-loadsharing/spine-1.txt, phantom-rp-loadsharing/spine-2.txt, spine-1.txt, spine-2.txt
VXLAN EVPN vPC Leaf and Spine¶
- Part 1 - vPC Setup (7 Jan 2025)
- Part 2 - Underlay Setup (10 Jan 2025)
- Part 3 - Overlay Setup (14 Jan 2025)
- Part 4 - L2VNI Configuration (16 Jan 2025)
- Part 5 - Anycast Gateways (21 Jan 2025)
- Part 6 - L3VNI Configuration - Single Tenant (23 Jan 2025)
- Part 7 - L3VNI Configuration - Multi Tenant (28 Jan 2025)
- Part 8 - L3VNI Configuration - Multi Tenant Leaking (30 Jan 2025)
- Part 9 - External Access outside Fabric (4 Feb 2025)
- Part 10 - Solving External Access issue (6 Feb 2025)
- Part 11 - Infra-Vlans (6 Feb 2025)
- vPC VXLAN EVPN Leaf and Spine - Fabric VPC Peering (not previously published)
- vPC VXLAN EVPN Leaf and Spine - Packet Walk with ARP Glean (not previously published)
Device configurations: leaf-1.txt, leaf-2.txt, leaf-3.txt, leaf-4.txt, leaf-5.txt, leaf-6.txt, pa-vm.xml, spine-1.txt, spine-2.txt
VXLAN EVPN Multi-Site¶
- Part 1 - Underlay Setup (23 Sep 2023)
- Part 2 - Core multisite Setup (23 Sep 2023)
- Part 3 - Overlay Setup (23 Sep 2023)
- Part 4 - L2VNI Configuration (23 Sep 2023)
- Part 5 - Anycast Gateways (23 Sep 2023)
- Part 6 - L3VNI Configuration - Single Tenant (23 Sep 2023)
- Part 7 - L3VNI Configuration - Multi Tenant (23 Sep 2023)
- Part 8 - L3VNI Configuration - Multi Tenant Leaking (23 Sep 2023)
- Part 9 - External Access outside Fabric (23 Sep 2023)
- VXLAN EVPN Multi-Site - YouTube Playlist (24 Oct 2024)
VXLAN EVPN Back-to-Back DCI¶
- Connect Legacy DCs together at L2 using VXLAN (24 Dec 2024)
Device configurations: DC1-ACC.txt, DC1-DCI1.txt, DC1-DCI2.txt, DC2-ACC.txt, DC2-DCI1.txt, DC2-DCI2.txt
Cisco Nexus vPC¶
- Part 1 - Concepts and Initial Setup (8 Dec 2024)
- Part 2 - Common Failure Scenarios (8 Dec 2024)
- Part 3 - Peer Priority (13 Jul 2025)
- Part 4 - Timers (not previously published)
MPLS L3VPN¶
- Cisco MPLS L3VPN Configuration - BGP as the PE-CE Routing Protocol (25 Dec 2021)
- Cisco MPLS L3VPN Configuration - Core MPLS and BGP Configuration (25 Dec 2021)
- MPLS LSP Walkthrough - With IGP Caveat (1 Jan 2022)
- MPLS L3VPN Configuration - Giving Customers Internet Access (1 May 2022)
BGP and Routing¶
- Leaking Routes from Global to VRF - BGP (3 Jan 2022)
- Leaking Routes from Global to VRF - Static Routes (3 Jan 2022)
- Using prefix lists and route maps to create a partial BGP table (9 Jan 2022)
- Using community values and route maps to create a partial BGP table (13 Jan 2022)
- BGP Conditional Route Advertisement for ISP Failover (6 Feb 2022)
- Cisco Policy Based Routing on L3 Switch (30 Mar 2022)
DMVPN¶
- Cisco DMVPN Phase I (27 Oct 2022)
- Cisco DMVPN Phase II (27 Oct 2022)
- Cisco DMVPN Phase III (27 Oct 2022)
- DMVPN - NHRP Mapping Flags (17 Nov 2022)
Cisco IOS¶
- Networking - Cisco Static NAT Mappings (12 Jan 2020)
- Networking - Cisco Traffic Policing (12 Jan 2020)
- Networking - Cisco Port Address Translation (PAT) (13 Jan 2020)
- Configuring IPv6 on a Cisco Router (31 Jan 2020)
- IPv6 Prefix Delegation - Service Provider (31 Jan 2020)
- Networking - Cisco Disable SIP ALG (2 Mar 2020)
802.1X¶
FortiGate¶
- Part 1 - Setting up FSSO for Web Filtering on Fortigate 60F (4 Sep 2021)
- Part 2 - Using FSSO groups to setup Web Filtering on Fortigate 60F (4 Sep 2021)
- FortiGate - Setup Kerberos and NTLM Proxy Authentication (5 Sep 2021)
- FortiGate - Stack Transparent and Proxy based Web Filtering (5 Sep 2021)
VMware Lab Guide¶
- Part 1 - My Lab Environment (18 Apr 2021)
- Part 2 - Setting up the ESXi Hosts (19 Apr 2021)
- Part 3 - ESXi Host Verification (20 Apr 2021)
- Part 4 - VMware vCenter Setup (21 Apr 2021)
- Part 5 - iSCSI VM Setup (22 Apr 2021)
- Part 6 - Add ESXi Hosts into vCenter (23 Apr 2021)
- Part 7 - Configure ESXi Networking in vCenter (24 Apr 2021)
- Part 8 - Create cluster in vCenter (25 Apr 2021)
- Part 9 - Configure iSCSI Networking for Datastores (1 May 2021)
- Part 10 - Creating a VM on the cluster (8 May 2021)
- Part 11 - Testing vMotion (8 May 2021)
- Part 12 - Migration to Distributed vSwitches (4 Sep 2021)
Windows and Virtualisation¶
- Downloading and Installing Windows Server 2019 (12 Jan 2020)
- Installing and Configuring Microsoft Deployment Toolkit (12 Jan 2020)
- Changing Active Directory Domain Name (3 Apr 2020)
- Migrating XenServer VM’s to Hyper-V (13 Aug 2020)