Dell S3048-ON Configuration Manual page 978

Example: Migrating an IPv4 VRRP Group from VRRPv2 to VRRPv3
NOTE: Carefully following this procedure, otherwise you might introduce dual master switches issues.
To migrate an IPv4 VRRP Group from VRRPv2 to VRRPv3:
1 Set the backup switches to VRRP version to both.
Dell_backup_switch1(conf-if-gi-1/1-vrid-100)#version both
Dell_backup_switch2(conf-if-gi-1/2-vrid-100)#version both
2 Set the master switch to VRRP protocol version 3.
Dell_master_switch(conf-if-gi-1/1-vrid-100)#version 3
3 Set the backup switches to version 3.
Dell_backup_switch1(conf-if-gi-1/1-vrid-100)#version 3
Dell_backup_switch2(conf-if-gi-1/2-vrid-100)#version 3
Assign Virtual IP addresses
Virtual routers contain virtual IP addresses configured for that VRRP group (VRID). A VRRP group does not transmit VRRP packets until
you assign the Virtual IP address to the VRRP group.
The device supports a total of 120 VRRP groups on a switch with Dell Networking OS or a total of 20 VRRP groups when using SFTOS.
The S-Series supports varying number of maximum VRRP groups per interface.
For more information, refer to
To activate a VRRP group on an interface (so that VRRP group starts transmitting VRRP packets), configure at least one virtual IP address
in a VRRP group. The virtual IP address is the IP address of the virtual router and does not require the IP address mask.
You can configure up to 12 virtual IP addresses on a single VRRP group (VRID).
The following rules apply to virtual IP addresses:
• The virtual IP addresses must be in the same subnet as the primary or secondary IP addresses configured on the interface. Though a
single VRRP group can contain virtual IP addresses belonging to multiple IP subnets configured on the interface, Dell Networking
recommends configuring virtual IP addresses belonging to the same IP subnet for any one VRRP group.
• For example, an interface (on which you enable VRRP) contains a primary IP address of 50.1.1.1/24 and a secondary IP address of
60.1.1.1/24. The VRRP group (VRID 1) must contain virtual addresses belonging to either subnet 50.1.1.0/24 or subnet 60.1.1.0/24, but
not from both subnets (though Dell Networking OS allows the same).
• If the virtual IP address and the interface's primary/secondary IP address are the same, the priority on that VRRP group MUST be set
to 255. The interface then becomes the OWNER router of the VRRP group and the interface's physical MAC address is changed to
that of the owner VRRP group's MAC address.
• If you configure multiple VRRP groups on an interface, only one of the VRRP Groups can contain the interface primary or secondary IP
address.
• On a stack system, if a force failover is performed on a master stack unit, the VRRP virtual addresses are disabled. To re-enable VRRP,
execute the mac-address-table station-move refresh-arp command.
Configuring a Virtual IP Address
To configure a virtual IP address, use the following commands.
1 Configure a VRRP group.
INTERFACE mode
vrrp-group vrrp-id
978 Virtual Router Redundancy Protocol (VRRP)
VRRP Implementation.