Users Guide

Table Of Contents
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.
Configuration
VRRP specifies a master, or active, router that owns the next-hop IP and MAC address for end stations on a LAN. The master
router is chosen from the virtual routers by an election process and forwards packets sent to the next-hop IP address. If the
master router fails, VRRP begins the election process to choose a new master router which continues routing traffic.
VRRP packets transmit with the virtual router MAC address as the source MAC address. The virtual router MAC address
associated with a virtual router is in 00:00:5E:00:01:{VRID} format for IPv4 and 00:00:5E:00:02:{VRID} format for IPv6. The
VRID is the virtual router identifier that allows up to 255 IPv4 and IPv6 VRRP routers on a network. The first four octets are
unquenchable, the last two octets are 01:{VRID} for IPv4 and 02:{VRID} for IPv6. The final octet changes depending on the
VRRP virtual router identifier.
Basic VRRP Configuration
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Layer 3