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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.
• Configure a simple text password.
INTERFACE-VRID mode
authentication-type simple [encryption-type] password
Parameters:
– encryption-type: 0 indicates unencrypted; 7 indicates encrypted.
– password: plain text.
Examples of the authentication-type Command
The bold section shows the encryption type (encrypted) and the password.
Dell(conf-if-te-1/1/1-vrid-111)#authentication-type ?
Dell(conf-if-te-1/1/1-vrid-111)#authentication-type simple 7 force10
The following example shows verifying the VRRP authentication configuration using the show conf
command. The bold section shows the encrypted password.
Dell(conf-if-te-1/1/1-vrid-111)#show conf
!
vrrp-group 111
authentication-type simple 7
387a7f2df5969da4
priority 255
virtual-address 10.10.10.1
virtual-address 10.10.10.2
virtual-address 10.10.10.3
virtual-address 10.10.10.10
Disabling Preempt
The preempt command is enabled by default. The command forces the system to change the MASTER
router if another router with a higher priority comes online.
Prevent the BACKUP router with the higher priority from becoming the MASTER router by disabling
preempt.
NOTE: You must configure all virtual routers in the VRRP group the same: you must configure all
with preempt enabled or configure all with preempt disabled.
Because preempt is enabled by default, disable the preempt function with the following command.
• Prevent any BACKUP router with a higher priority from becoming the MASTER router.
INTERFACE-VRID mode
no preempt
Examples of Disabling Preempt
Re-enable preempt by entering the preempt command. When you enable preempt, it does not display in
the
show commands, because it is a default setting.
Virtual Router Redundancy Protocol (VRRP)
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