What is vrrp in networking

SW1 has the best priority and will become the master router. SW2 will become a backup router. Use show vrrp to verify your configuration.

If you like to keep on reading, Become a Member Now! Here is why:. You write the best articles of how to configure these things. Clients 1 through 3 are configured with the default gateway IP address of As the primary router, Router A forwards packets sent to its IP address. If the primary virtual router fails, the router configured with the higher priority becomes the primary virtual router and provides uninterrupted service for the LAN hosts.

When Router A recovers, it becomes the primary virtual router again. In some cases, during an inherit session, there is a small time frame during which two routers are in Primary-Primary state.

So, it takes the routers up to seconds to recover after moving to Primary-Backup state from Primary-Primary state. These can be a combination of IPv4 or IPv6 families. The IP address of this virtual routing platform is Each Virtual Chassis configuration operates as a single switch, which is running VRRP, and together they make up a virtual routing platform.

If the primary routing platform fails, the switch configured with the higher priority becomes the primary virtual routing platform and provides uninterrupted service for the LAN hosts. If a router fails you need a standby router to become the active gateway and forward packets to the next hop. Configuring VRRP on Juniper as well as other network equipment can vary significantly depending on the devices. Many load balancers also support VRRP and their configuration is specific to each of these devices.

VRRP is a standards based protocol and is vendor independent allow some flexibility when choosing network devices.

One of the glaring difference seems to be in trouble-shooting. We do have access to master vrrp router. The router is a candidate to become the next active router and sends periodic Hello messages. The router knows the virtual IP address, but is neither the active router nor the standby router.

It listens for Hello messages from those routers. But timers are easily adjusted in HSRP. Thanks for the article. I personally try to stick with the standards-based approach just in case we introduce non-Cisco devices into the network someday.

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