LAB 2 - Controlling the topology with restricted TLOC Colors
In the previous lab lesson, we have seen how we can connect a vEdge router to the WAN transport attached to the adjacent vEdge router using a feature called TLOC Extension.
LAB 1 - Manipulating site-local BGP routing
One of the most common use-cases for localized control policies is manipulating the local routing advertisements so that site-local routers prefer one vEdge over another in a dual-homed environment.
What is a Localized Policy?
The main difference between centralized and localized policies is the area of effect. A centralized policy is applied on vSmart and has a network-wide impact (hence centralized).
Cisco SD-WAN High Availability
The fundamental goal of every network is to provide continuous network service by rerouting around failures and potential causes of downtime. Cisco SD-WAN achieves high availability through a combination of four principles:
OMP Source Preference
By default, when multiple vSmart controllers oversee the overlay fabric, vEdges establish an OMP peering session with two of them. This is controlled by a system parameter called max-omp-sessions set to two by default.
OMP Send Path Limit
OMP Send-Path-Limit is a configuration parameter that defines the maximum number of equal-cost vroutes that a vSmart controller or a vEdge router advertises to its OMP peers. By default, the omp send-path-limit is set to 4, which means that if a vSmart controller has ten equal-cost best paths to a destination, it will only advertise four routes to vEdges.
OMP Send Backup Paths
The Cisco SD-WAN solution provides a configuration option that tells the vSmart controller to advertise the first set of non-best routes to vEdge routers. The configuration is as simple as adding one configuration line on the controller, as shown in the output below.
What is SASE?
Secure Access Service Edge (SASE) is a new approach to an enterprise's wide-area infrastructure that combines software-defined WAN with advanced cloud-deliver security features. The SASE framework aims to combine the network, security, and identity (and possibly NetOps and SecOps) functions into a single, unified solution delivered as a service.
Configuring Application-Aware Routing (AAR) Policies
In Traditional WAN networks, routers make forwarding decisions based primarily on link-state and routing metrics. Cisco SD-WAN allows us to configure SLA-based routing that considers performance characteristics such as packet loss, latency, and jitter when making forwarding decisions.
Cloud onRamp with AWS - Design Options
In this lesson, we are going to go through a high-level overview of the most common Cisco SD-WAN Cloud onRamp designs when it comes to integration with Amazon Web Services (AWS).