The output of the Python script should look similar to
that in Figure 8-10.
Figure 8-10 Output of the Python Script from
Example 8-7
CISCO SD-WAN
Cisco SD-WAN (Software-Defined Wide Area Network)
is a cloud-first architecture for deploying WAN
connectivity. Wide-area networks have been deployed for
a long time, and many lessons and best practices have
been learned throughout the years. Applying all these
lessons to software-defined networking (SDN) resulted
in the creation of Cisco SD-WAN. An important feature
of SDN is the separation of the control plane from the
data plane.
The control plane includes a set of protocols and features
that a network device implements so that it can
determine which network path to use to forward data
traffic. Spanning tree protocols and routing protocols
such as OSPF (Open Shortest Path First), EIGRP
(Enhanced Interior Gateway Routing Protocol), and BGP
(Border Gateway Protocol) are some of the protocols that
make up the control plane in network devices. These
protocols help build the switching or routing tables in
network devices to enable them to determine how to
forward network traffic.