The vrrp un-check ttl command terminates the TTL value detection of VRRP packets.
The undo vrrp un-check ttl command starts the TTL value detection of VRRP packets.
By default, the FW checks the TTL value of VRRP packets.
If you allow the system to check the TTL value of VRRP packets, those whose TTL values are not 255 are dropped.
# Disable the check of the TTL value of VRRP packets.
<sysname> system-view [sysname] interface GigabitEthernet 0/0/1 [sysname-GigabitEthernet0/0/1] vrrp un-check ttl
# Restore the default setting and check the TTL value of the VRRP packets.
[sysname-GigabitEthernet0/0/1] undo vrrp un-check ttl