3Com Switch 8800 Family Firewall Module Configuration and Command Reference Guide

344 CHAPTER 20: VRRP CONFIGURATION COMMANDS
[SecBlade_FW] vrrp ping-enable
vrrp un-check ttl Syntax
vrrp un-check ttl
undo vrrp un-check ttl
View
Interface view
Parameter
None
Description
Use the vrrp un-check ttl command to disable time to live (TTL) check for VRRP
packets.
Use the undo vrrp ping-enable command to enable TTL check for VRRP packets.
According to the VRRP protocol, the TTL value of VRRP packets must be 255. If
detecting that the TTL value of a packet is not 255, the backup security gateway
drops the packet.
By default, the TTL value of VRRP packets will be checked.
Example
# Disable TTL check for VRRP packets.
[SecBlade_FW-GigabitEthernet0/0.1] vrrp un-check ttl
vrrp vrid preempt-mode Syntax
vrrp vrid virtual-router-ID preempt-mode [ timer delay delay-value ]
undo vrrp vrid virtual-router-ID preempt-mode
View
Interface view
Parameter
virtual-router-ID: Virtual router ID or VRRP standby group number, in the range of
1 to 255.
delay-value: Delay in the range of 0 to 255 in seconds.
Description
Use the vrrp vrid preempt-mode command to enable preemption on the
security gateway and configure its preemption delay in the specified standby
group.
Use the undo vrrp vrid preempt-mode command to disable preemption on the
security gateway in the specified standby group.