HSRP

Question 1

What is network redundancy?

Answer 1

Redundancy can have different meanings depending on the context, but in general, it refers to something being unnecessarily repeated or duplicated.

In computer networking, redundancy refers to the inclusion of extra or backup components—like cables, switches, or entire systems—to ensure the network remains available and operational even if part of it fails.

Key Points:
• Goal: Improve reliability, fault tolerance, and uptime.
• Example: A network might have multiple paths between devices. If one cable or router fails, data can still be routed through another path.

Common Types of Redundancy in Networking:
1. Link redundancy: Multiple physical or logical paths between devices (e.g., using two Ethernet cables).
2. Device redundancy: Having backup routers, switches, or firewalls.
3. Power redundancy: Devices with dual power supplies or connected to backup generators.
4. Path redundancy: Routing protocols (like OSPF or BGP) that can reroute traffic automatically if a path fails.