First Hop Redundancy Protocol (FHRP) IP routing redundancy is designed to allow for transparent fail-over at the first-hop IP router. Both HSRP and VRRP enable two or more devices to work together in a group, sharing a single IP address, the virtual IP address.

A first hop redundancy protocol (FHRP) is a computer networking protocol which is designed to protect the default gateway used on a subnetwork by allowing two or more routers to provide backup for that address; [1] [2] in the event of failure of an active router, the backup router will take over the address, usually within a few seconds.

2022年10月7日 · As the name suggests it is a redundancy protocol that manages multiple gateway routers, i.e., it automatically replaces a failed gateway router with a functional backup (redundant) gateway router. FHRP is a not single protocol in general, but a class of protocols that provide similar functions: GLBP – Gateway Load Balancing Protocol.

First Hop Redundancy Protocol (FHRP) is a hop redundancy protocol that is designed to provide redundancy to the gateway router within the organization’s network by the use of a virtual IP address and virtual MAC address. To implement FHRP, there should be two or more routers that will be used as a gateway router.

2023年7月3日 · 第一跳冗余协议（First Hop Redundancy Protocol，FHRP）是一种网络协议，用于提供在默认网关故障时的备用路由。 本文将详细介绍三种常见的第一跳冗余协议：HSRP（Hot Standby Router Protocol）、VRRP（Virtual Router Redundancy Protocol）和GLBP（Gateway Load Balancing Protocol）。

2018年8月12日 · Hot Standby Redundancy Protocol (HSRP) 是 Cisco 自家產品，只有 Cisco 設備可用，要設定 HSRP 極其簡單，首先設定 Group ID 和 VIP。 參與 HSRP 的 Interface 之 Group ID 必需相同，VIP 需與 Interface 的 IP 處於同一個 Subnet 之中。 指令是 standby <group id> ip <vip>。 用 show standby 可查看 HSRP 狀態。 State is Active . 2 state changes, last state change 00:10:30. Virtual IP address is 192.168.125.3 .

2016年2月16日 · Multiple HSRP groups enable redundancy and load-sharing within networks and allow redundant devices to be more fully utilized. A device actively forwarding traffic for one HSRP group can be in standby or in the listen state for another group. If two devices are used, then Device A would be configured as active for group 1 and standby for group 2.

2025年1月16日 · This tutorial explains basic concepts and options of the First Hop Redundancy Protocol. Learn what the Layer 3 redundancy is and how FHRP provides redundancy.

第一跳冗余协议FHRP（first hop redundancy protocol）：主要是用来解决网关问题，提高了默认网关的冗余性和负载均衡；其方法是让多台路由器组成一个组并虚拟出一个网关，让其中的一台路由器充当活跃的网关路由器…

In this article, I’ll be delving deeper into what FHRP is, how it operates, and how it provides network redundancy. We’ll also examine some of the various protocols that are available to achieve this network robustness (such as HSRP, VRRP, GLBP ).