Configuring The Function Of Pinging The Virtual Ip Address; Configuring The Ttl Value Check For Vrrp Packets; Configuring The Mapping Mode Between Virtual Ip Address And Mac Address - H3C S9500 Series Operation Manual

Operation Manual – VRRP
H3C S9500 Series Routing Switches

1.2.1 Configuring the Function of Pinging the Virtual IP Address

This task is to enable/disable the function of pinging the IP address of the virtual router.
With this function enabled, you can ping the virtual IP address of the virtual router or
telnet to the virtual IP address of the virtual router.
Perform the following configuration in system view to enable/disable the ping function:
Enable the ping function
Disable to ping function
By default, the ping function is enabled, that is, you can ping or telnet to the virtual IP
address of the virtual router.
You should enable the ping function before configuring the virtual router. If VRRP is
already configured on the switch, it is not allowed to modify the configuration.

1.2.2 Configuring the TTL Value Check for VRRP Packets

This task is to enable/disable the TTL value check for VRRP packets on the backup
switch. The TTL value must be 225. If the backup switch finds the TTL of a VRRP
packet is not 225, the packet will be discarded.
Perform the following configuration in VLAN interface view to enable/disable the TTL
value check for VRRP packets:
Disable the TTL value check for VRRP packets
Enable the TTL value check for VRRP packets
1.2.3 Configuring the Mapping Mode between Virtual IP Address and MAC
Address
This task is to configure the mapping mode between virtual lP address and MAC
address. In VRRP, the virtual IP address of the virtual router corresponds to the virtual
MAC address, to ensure correct data forwarding.
Depending on the chips installed, some switches support mapping one virtual IP
address to multiple MAC addresses.
S9500 series not only guarantee correct data forwarding in the subnet, but also allow
you to specify a mapping mode, either virtual IP address to real MAC address mapping
or virtual IP address to virtual MAC address mapping.
Perform the following configuration in system view to configure IP-to-MAC mappings:
To do...
To do...
1-3
Chapter 1 VRRP Configuration
Use the command...
vrrp ping-enable
undo vrrp ping-enable
Use the command...
vrrp un-check ttl
undo vrrp un-check ttl