H3C Technologies H3C S6800 Series Switches - Manual (Page 14)

6
The flood proxy mode applies to VXLANs that have many sites. This mode reduces flood traffic in
the transport network without using a multicast protocol. To use a flood proxy server, you must set
up a VXLAN tunnel to the server on each VTEP.
NOTE:
The flood proxy mode is typically used in SDN transport networks that have a flood proxy server. For
VTEPs to forward packets based on the MAC address table issued by an SDN controller, you must
perform the following tasks on the VTEPs:
• Disable remote-MAC address learning by using the vxlan tunnel mac-learning disable command.
• Configure an OpenFlow instance for the VXLAN.
Each destination VTEP floods the inner Ethernet frame to all the site-facing interfaces in the VXLAN. To
avoid loops, the destination VTEPs do not flood the frame to VXLAN tunnels.
Figure 5 Unicast mode
VTEP 1 VTEP 2
Transport network
P
Server 1
VM 1
VM 2
VM 3
Server 3
VM 7
VM 8
VM 9
Server 2
VM 4
VM 5
VM 6
FGE1/0/1
FGE1/0/2
FGE1/0/1
VX
LA
N tu
nne
l
VTEP 3
VXLAN tunnel
Server 4
VM 10
VM 11
VM 12
Replicate and
encapsulate