Users Guide

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)#
Conguring VRRP Authentication
Simple authentication of VRRP packets ensures that only trusted routers participate in VRRP processes.
When you enable authentication, Dell Networking OS includes the password in its VRRP transmission. The receiving router uses that
password to verify the transmission.\
NOTE: You must congure all virtual routers in the VRRP group the same and enable authentication with the same
password or authentication is disabled.
To congure simple authentication, use the following command.
• Congure 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-vrid-111)#authentication-type ?
Dell(conf-if-te-1/1-vrid-111)#authentication-type
simple 7 dell
The following example shows verifying the VRRP authentication conguration using the show conf command. The bold section
shows the encrypted password.
Dell(conf-if-te-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
Dell(conf-if-te-1/1-vrid-111)#
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 congure all virtual routers in the VRRP group the same and congure all with preempt enabled or
congure all with preempt disabled.
Because preempt is enabled by default, disable the preempt function with the following command.
Virtual Router Redundancy Protocol (VRRP)
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