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Its a long time since I posted something specifically on networking. And here is now a post with a basic CISCO networking knowledge. Routers and Layer 3 switches are doing almost same functions, but why do we use both the devises? If we analyze it, we can find lot many differences between a router and an L3 switch.
Router
Router
- Router uses routing table.
- Router do encapsulation.
- Router reads network portion of the IP address when it forwards.
- Routers can do Policy Based Routing.
- Routers perform tasks in software.
- Routers are mainly used for linking WANs
Layer 3 Switch
- Switch uses MAC table.
- Switch can be used for VLAN creation.
- Switch Reads the Host portion of an IP Address when it forwards.
- Switches perform tasks through hardware using ASIC.
- Switches are mainly used for creating network segments within a LAN.