H3C S5600 Series Operation Manual page 679

Operation Manual – VRRP
H3C S5600 Series Ethernet Switches
The virtual router IP address and the IP addresses used by the member switches
in the VRRP group must belong to the same network segment. If not, the VRRP
group will be in the initial state (the state before you configure the VRRP on the
switches of the group). In this case, VRRP does not take effect.
A VRRP group is removed after all its virtual router IP addresses are removed. In
this case, all the configurations performed for the VRRP group are disabled.
Note:
Do not configure a host IP address as the IP address of the virtual router. If your host IP
address is the same as the virtual router IP address of the VRRP group, all the packets
sent to the current network segment will be sent to your host. As a result, packets in the
network segment cannot be forwarded properly.
II. Response of the virtual router to the ping operations
According to the standard VRRP, a running virtual router does not respond to the ping
operations, so that you cannot use the ping command to check the network
connectivity and whether the configuration of the IP address of a virtual router is
successful.
For S5600 series Ethernet switches, you can specify whether the switches in a VRRP
group respond to the ping operations destined for the virtual router IP addresses.
III. Mapping relationship between virtual router IP addresses and MAC
addresses
You can set the mapping between the IP address of the virtual router and the MAC
addresses of the member switches of a VRRP group, so that packets sent from the
hosts in the network can be forwarded to the correct gateway according to the saved
MAC address forwarding table.
There are two types of mapping between the virtual router IP address and the MAC
addresses:
Virtual router IP address-to-virtual MAC address mapping. By default, a virtual
MAC address is automatically created after a virtual router IP address is
configured. Hosts send packets to gateways for layer 3 forwarding according to
this virtual MAC address. For S5600 series Ethernet switches, you can map
multiple virtual router IP addresses of the VRRP group to one virtual MAC
address.
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Chapter 1 VRRP Configuration