ENCOR 2.0 Virtualization (10%)¶
Virtualization mixes two describe objectives (device virtualization, LISP and VXLAN) with one configure and verify objective (VRF, GRE and IPsec). Expect conceptual multiple-choice and drag-and-drop items on hypervisors, LISP roles and VXLAN headers, and expect to type or troubleshoot a VRF-aware GRE over IPsec tunnel. Objective 2.2 is where most of the points are, so it gets most of the lab time.
| Objective | Verb | Page |
|---|---|---|
| 2.1 Device virtualization: hypervisor type 1 and 2, virtual machine, virtual switching | Describe | Device Virtualization |
| 2.2.a VRF | Configure and verify | VRF and VRF-Lite |
| 2.2.b GRE and IPsec tunneling: crypto maps vs tunnel protection, IKEv1 vs IKEv2, transport vs tunnel mode, MTU and MSS, recursive routing | Configure and verify | GRE and IPsec Tunneling |
| 2.3 Network virtualization concepts: LISP, VXLAN | Describe | LISP and VXLAN |
Time budget: week 2 of the study plan, after QoS. Suggested split: half a day on 2.1, two days on 2.2 (VRF first, then GRE over IPsec, ending with the lab), one day on 2.3. The week's deliverable is the GRE over IPsec lab with the tunnel in VRF CUSTOMER-A, at the end of the GRE and IPsec page.
Related practice:
- Simulation: Sim 08: GRE over IPsec (IKEv2) in a VRF. Do it after the module lab, against the clock (25 minutes).
- Diagrams: E12 to E17 in the ENCOR diagram library (hypervisors, VRF-Lite, GRE over IPsec headers, IKEv2, LISP, VXLAN).
- Question bank: the 2.0 Virtualization section of ENCOR bank 1.
- ENARSI overlap: VRF-Lite returns as ENARSI 1.7 (ENARSI Sim 08), and GRE, NHRP and IPsec return in DMVPN (ENARSI 2.3).
When you finish, take the Virtualization practice questions. Aim for 80% or better before moving on.
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