H3C Technologies H3C S12500 Series Switches - Manual (Page 147)

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Figure 36 Answering ARP requests
3. Different hosts send packets to different routers according to the requested virtual MAC addresses.
For example, as shown in
Figure 37 , Host A regards the virtual MAC address of Router A as the
gateway MAC address, so it sends packets to Router A for forwarding; Host B regards the virtual
MAC address of Router B as the gateway MAC address, so it sends packets to Router B for
forwarding.
Figure 37 Sending packets to different routers for forwarding
Virtual forwarder
Creating a virtual forwarder
Virtual MAC addresses help different hosts transmit packets to different routers in a VRRP group. To
enable the routers in the VRRP group to forward the packets, be sure to create virtual forwarders (VFs) on
Host A Host B
Router A
Master
Router B
Backup
Virtual IP: 10.1.1.1/24
Network
Gateway IP: 10.1.1.1/24 Gateway IP: 10.1.1.1/24
Virtual MAC: 000f-e2ff-0011
Virtual MAC: 000f-e2ff-0012
ARP request
Target IP: 10.1.1.1/24
ARP reply
Target MAC: 000f-e2ff-0011
ARP request
Target IP: 10.1.1.1/24
ARP reply
Target MAC: 000f-e2ff-0012