As configuring of VLANs helps in controlling the size of broadcast domains. There are some key components of inter-VLAN routing such as
These are the main components for processing routing between VLANs. The router to be used in the system can perform two roles i.e. either it can an external standalone or can be integrated with a switch for performing inter-VLAN routing between long geographical locations.
Both external and internal routers can be used with sub-interfaces for performing inter-VLAN routing between long geographical locations. For this inter-VLAN routing a solution is Router-switch bridging. Kevin Dooley (2002) cites that "Every additional VLAN in a Distribution Area requires additional CPU and memory resources in the Distribution (and possibly also the Core) Level of the network."
The inter-VLAN routing should be configured in following ways:
1 Entering Ethernet configuration mode
2 Creating sub-interface for VLAN usage
3 Adding comment line to identify any new interface