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Dell EMC SmartFabric OS10 User Guide Release 10.5.1

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Virtual Router Redundancy Protocol

VRRP allows you to form virtual routers from groups of physical routers on your local area network (LAN). These virtual routing platforms—master and backup pairs—provide redundancy during hardware failure. VRRP also allows you to easily configure a virtual router as the default gateway to all your hosts. It also avoids the single point of failure of a physical router.

VRRP:
  • Provides a virtual default routing platform
  • Provides load balancing
  • Supports multiple logical IP subnets on a single LAN segment
  • Enables simple traffic routing without the single point of failure of a static default route
  • Avoids issues with dynamic routing and discovery protocols
  • Takes over a failed default router:
    • Within a few seconds
    • With a minimum of VRRP traffic
    • Without any interaction from hosts
NOTE: The default behavior of VRRP is active-active. If you do not want the VRRP backup gateway to forward traffic on behalf of the active VRRP gateway in a non-VLT setup, use the no vrrp mode active-active command disable the VRRP active-active feature.
NOTE: When an IPv6 VRRP group and OSPFv3 are configured on the same interface, OSPFv3 does not converge on that interface. For OSPFv3 convergence to happen on that interface, configure a static IPv6 neighbor entry on the VLAN interface with the peer link-local IPv6 address and MAC address. To configure a static IPv6 neighbor entry with the peer link-local IPv6 address and MAC address, use the ipv6 neighbor command.

Configuration notes

All Dell EMC PowerSwitches except MX-Series, S4200-Series, S5200 Series, and Z9332F-ON:

Priority 255 is not supported.

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