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Setting VRRP Group (Virtual Router) Priority
Setting a virtual router priority to 255 ensures that router is the “owner” virtual router for the VRRP group. VRRP elects the
MASTER router by choosing the router with the highest priority.
The default priority for a virtual router is 100. The higher the number, the higher the priority. If the MASTER router fails, VRRP
begins the election process to choose a new MASTER router based on the next-highest priority.
If two routers in a VRRP group come up at the same time and have the same priority value, the interface’s physical IP addresses
are used as tie-breakers to decide which is MASTER. The router with the higher IP address becomes MASTER.
To configure the VRRP group’s priority, use the following command.
●
Configure the priority for the VRRP group.
INTERFACE -VRID mode
priority priority
The range is from 1 to 255.
The default is 100.
Example of the priority Command
Dell(conf-if-te-1/2)#vrrp-group 111
Dell(conf-if-te-1/2-vrid-111)#priority 125
Example of Verifying the VRRP Group Priority
Dell#show vrrp
------------------
Tengigabitethernet 1/1, VRID: 111, Net: 10.10.10.1
State: Master, Priority: 255, Master: 10.10.10.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 2343, Gratuitous ARP sent: 5
Virtual MAC address:
00:00:5e:00:01:6f
Virtual IP address:
10.10.10.1 10.10.10.2 10.10.10.3 10.10.10.10
Authentication: (none)
------------------
Tengigabitethernet 1/2, VRID: 111, Net: 10.10.2.1
State: Master, Priority: 125, Master: 10.10.2.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 601, Gratuitous ARP sent: 2
Virtual MAC address:
00:00:5e:00:01:6f
Virtual IP address:
10.10.2.2 10.10.2.3
Authentication: (none)
Dell(conf)#
Configuring VRRP Authentication
Simple authentication of VRRP packets ensures that only trusted routers participate in VRRP processes.
When you enable authentication, the Dell Networking OS includes the password in its VRRP transmission. The receiving router
uses that password to verify the transmission.
NOTE:
You must configure all virtual routers in the VRRP group the same: you must enable authentication with the same
password or authentication is disabled.
To configure simple authentication, use the following command.
NOTE: Authentication for VRRPv3 is not supported.
● Configure a simple text password.
INTERFACE-VRID mode
authentication-type simple [encryption-type] password
Parameters:
892
Virtual Router Redundancy Protocol (VRRP)