14
Predefined user roles
network-admin
Usage guidelines
By default, the device floods unknown unicast frames received from the local site to the following
interfaces in the frame's VXLAN:
•
All interfaces in the local site except for the incoming interface.
•
All VXLAN tunnel interfaces.
To limit unknown unicast traffic to the local site, use this command to disable the flooding function for
the VSI bound to the VXLAN. The VSI will not flood unknown unicast frames to VXLAN tunnel
interfaces.
Examples
# Disable flooding for the VSI
vsi1
.
<Sysname> system-view
[Sysname] vsi vsi1
[Sysname-vsi-vsi1] flooding disable
group
Use
group
to assign a VXLAN a multicast group address for flood traffic, and specify a source IP
address for multicast VXLAN packets.
Use
undo group
to restore the default.
Syntax
group
group-address
source
source-address
undo group
group-address
source
source-address
Default
A VXLAN uses unicast mode (head-end replication) for flood traffic. No multicast group address or
source IP address is specified for multicast VXLAN packets.
Views
VXLAN view
Predefined user roles
network-admin
Parameters
group-address
: Specifies a multicast address in the range of 224.0.1.0 to 239.255.255.255.
source
source-address
: Specifies a source IP address for multicast VXLAN packets.
Usage guidelines
To reduce traffic sent to the transport network, use multicast mode if the network has dense flood
traffic or many VTEPs.
For multicast-mode VXLANs, transport network devices must maintain multicast group and
forwarding information. To reduce the multicast forwarding entries maintained by transport network
devices, assign a multicast group address to multiple VXLANs. The VTEP separates traffic between
VXLANs by VXLAN IDs.