- Normally a router makes a packet-forwarding decision
based on a packet's destination IP address.
However there might be times
that we want specific traffic to be routed differently
than what the IP routing table is telling us.
Maybe for a security reason, a performance reason,
for some sort of a design reason.
We can actually override the instructions
on the IP routing table using a feature
called policy-based routing or PBR.
And in this section, we're going to talk about the theory
of PBR and take a look at its configuration.