VRRP (First-Hop Redundancy)
VRRP provides a virtual default gateway so hosts keep connectivity if a router fails.
Updated: 2026-03-06
Definition
VRRP (Virtual Router Redundancy Protocol) creates a virtual IP address that hosts use as their default gateway.
If the master router fails, a backup router takes over the virtual gateway to maintain connectivity.
Key points
- Virtual IP used as default gateway
- Master/Backup roles
- Improves gateway availability
Common mistakes
- Hosts configured with the physical router IP instead of the virtual IP.
- No tracking of uplinks leading to suboptimal failover behavior.
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