Configures the type of authentication used on a Virtual Router Redundancy Protocol Extended (VRRP-E) interface.
No authentication is configured for a VRRP-E interface.
Virtual Ethernet (VE) interface configuration mode
This configuration is for VE interfaces only.
If the md5-auth option is configured, syslog and SNMP traps are generated if a packet is being dropped due to MD5 authentication failure. Using MD5 authentication implies that the software does not need to run checksum verification on the receiving device and can rely on the authentication code (message digest 5 algorithm) to verify the integrity of the VRRP-E message header.
The no form of this command removes the VRRP-E authentication from the interface.
The following example configures MD5 authentication on VE interface 20.
device(config)# ipv6 protocol vrrp-extended device(config)# interface ve 20 device(config-if-Ve-20)# ipv6 vrrp-extended auth-type md5-auth lyk28d3j