Periodical Sending Of Arp Packets In A Vrrp Group; Vrrp Configuration; Configuring Basic Vrrp Functions - H3C S5600 Series Operation Manual

after the timer expires, it considers that the master fails and starts the election process to elect a
new master for forwarding packets.

Periodical sending of ARP packets in a VRRP Group

If a VRRP group exists on a network, the master sends gratuitous ARP packets periodically to hosts on
the network, which then update their local ARP tables, ensuring that no device on this network uses the
same IP address with the VRRP virtual router.
As you can create mappings between the IP address and MAC address of the VRRP virtual router,
there are two cases:
If the IP address of the virtual router corresponds to a virtual MAC address, the source MAC
address in the gratuitous ARP packet will be the virtual MAC address.
If the IP address of the virtual router corresponds to an actual MAC address, the source MAC
address in the gratuitous ARP packet will be the VLAN interface's MAC address of the master in
the VRRP group.
For more information about ARP, refer to the ARP section in the part discussing ARP-MFF in this
manual.

VRRP Configuration

Configuring Basic VRRP Functions

Follow these steps to configure the basic VRRP functions:
To do...
Enter system view
Configure response of the virtual
router to the ping operations
Map the virtual router IP address to
a MAC address
Create a VLAN
Return to system view
Enter VLAN interface view
Create a VRRP group or add a
virtual router IP address
Use the command...
system-view
vrrp ping-enable
vrrp method { real-mac |
virtual-mac }
vlan vlan-id
quit
interface Vlan-interface vlan-id
vrrp vrid virtual-router-id virtual-ip
virtual-address
1-7
Remarks
—
Optional
By default, the virtual IP address
cannot be pinged.
Optional
By default, the virtual IP address of
a VRRP group is mapped to the
virtual MAC address.
—
This operation creates the VLAN to
which the VRRP group
corresponds. The vlan-id argument
is the ID of the VLAN.
—
—
Required