I need an example response to this chat $-$ Using a single router interface to route traffic between various VLANs, Router on a Stick $($ROAS$)$ eliminates the need for multiple physical interfaces. Nevertheless, there are several possible drawbacks to this setup. Since the router handles all inter$-$VLAN routing it first establishes a single point of failure. If the router or its interface malfunctions VLAN communication is impeded. Additionally, because all data must go through a single connection the router interface may become a bottleneck if there is a high volume of inter$-$VLAN traffic. Another problem with scalability is that adding more VLANs can complicate the router configuration and cause performance issues. Additionally managing the setup can be more difficult particularly when there are numerous subinterfaces IP addresses and security configurations. Lastly there arent as many redundancy options as with other configurations like Layer $3$ switches or multiple routers. Without additional redundancy protocols like HSRP or VRRP a router interface failure could cause a major network outage.