Dell Force10 S4820T S4820T Configuration Guide - Page 1051

Configure VRRP Authentication Simple authentication of VRRP packets ensures that only trusted routers participate in VRRP processes. When authentication is enabled, FTOS includes the password in its VRRP transmission, and the receiving router uses that password to verify the transmission. Note: All virtual routers in the VRRP group must be configured the same: authentication must be enabled with the same password or authentication is disabled. Configure simple authentication with the following command in the VRRP mode: Task Configure a simple text password. Command Syntax authentication-type simple [encryption-type] password Parameters: encryption-type: 0 indicates unencrypted; 7 indicates encrypted password: plain text Command Mode INTERFACE-VRID Figure 54-9. Command Example: authentication-type FTOS(conf-if-gi-1/1-vrid-111)#authentication-type ? FTOS(conf-if-gi-1/1-vrid-111)#authentication-type simple 7 force10 Encryption type (encrypted) Password Figure 54-10. Command Example: show config in VRID mode with a Simple Password Configured FTOS(conf-if-gi-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 FTOS(conf-if-gi-1/1-vrid-111)# Encrypted password Disable Preempt The preempt command is enabled by default, and it forces the system to change the MASTER router if another router with a higher priority comes online. Virtual Router Redundancy Protocol (VRRP) | 1051