FHRP concepts<br><br>9.1 First Hop Redundancy Protocols<br><br>Default Gateway Limitations<br>End devices are typically configured with a single<br>default gateway IPv4 address.<br>• If the default gateway router interface fails, LAN<br>hosts lose outside LAN connectivity.<br>• This occurs even if a redundant router or Layer 3<br>switch that could serve as a default gateway<br>exists.<br>First hop redundancy protocols (FHRPs) are<br>mechanisms that provide alternate default gateways<br>in switched networks where two or more routers are<br>connected to the same VLANs.
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