Operation Manual – Reliability
H3C S9500 Series Routing Switches
Chapter 1 VRRP Configuration
1-3
1.2.1 Enabling/Disabling the Function to Ping the Virtual IP Address
This operation enables or disables the function to ping the virtual IP address of the
virtual router. The standard protocol of VRRP does not support the ping function, then
the user cannot judge with
ping
command whether an IP address is used by the virtual
router. If the user configure the IP address for the host same as the virtual IP address of
the virtual router, then all messages in this segment will be forwarded to the host.
So H3C S9500 Series Routing Switches (hereinafter referred to as S9500 series)
provide the ping function to ping the virtual IP address of the virtual router.
Perform the following configuration in system view.
Table 1-1
Enable/disable the ping function
Operation
Command
Enable to ping the virtual IP address
vrrp ping-enable
Disable to ping the virtual IP address
undo vrrp ping-enable
By default, the function to ping the virtual IP address is disabled.
You should set the ping function before configuring the virtual router. If a virtual router is
already established on the switch, it is not allowed to use the
vrrp ping-enable
command and the
undo vrrp ping-enable
command to modify the configuration any
more.
1.2.2 Enabling/Disabling the Check of TTL Value of VRRP Packet
This operation configures whether to check TTL value of VRRP packet on the Backup
switch. The TTL value must be 225. If the Backup switch find TTL is not 225 when
receiving VRRP packet, the packet will be discarded.
Perform the following configuration in VLAN interface view.
Table 1-2
Enable/disable the check of TTL value of VRRP packet
Operation
Command
Disable the check of TTL value of VRRP packet
vrrp un-check ttl
Enable the check of TTL value of VRRP packet
undo vrrp un-check ttl
By default, the switch checks TTL value of VRRP packets.
1.2.3 Setting Correspondence between Virtual IP Address and MAC Address
This operation sets correspondence between the virtual lP address and the MAC
address. In the standard protocol of VRRP, the virtual IP address of the virtual router
