Routing & Switching Fundamentals

How traffic gets forwarded within a local network (switching) versus across different networks (routing).

Read

45 min

Practice MCQs

25

Interview QA

25

Edition

v6

Editorial status

Reviewed

Relevant for

Network Engineer

Scope: Current IETF router, CIDR, OSPFv2/v3, BGP, eBGP policy, VRRP, BFD, EVPN, VXLAN, Cisco Layer 2/STP, and Juniper BGP references reviewed 2026-09-04.