16
Step Command
Remarks
4.
(Optional.) Enable
selective flood for a MAC
address.
selective-flooding mac-address
mac-address
By default, selective flood is
disabled.
Use this feature to exclude a
remote MAC address from the
flood suppression done by using
the
flooding disable
command.
The VTEP will flood the frames
destined for the specified MAC
address to remote sites when
unknown-unicast floods are
confined to the local site.
Configuring the destination UDP port number of
VXLAN packets
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure a destination
UDP port for VXLAN
packets.
vxlan udp-port port-number
By default, the destination UDP
port number is 4789 for VXLAN
packets.
You must configure the same
destination UDP port number on all
VTEPs in a VXLAN.
Configuring VXLAN packet check
The device checks the inner Ethernet header of each VXLAN packet for 802.1Q VLAN tags. If the
header contains 802.1Q VLAN tags, the device drops the packet.
If a remote VTEP uses the Ethernet access mode, its VXLAN packets might contain 802.1Q VLAN
tags. To prevent the local VTEP from dropping the VXLAN packets, do not execute the
vxlan
invalid-vlan-tag discard
command on the local VTEP.
The access mode is configurable by using the
xconnect vsi
command.
To configure VXLAN packet check:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable the VTEP to drop VXLAN
packets that have 802.1Q VLAN
tags in the inner Ethernet
header.
vxlan invalid-vlan-tag discard
By default, the VTEP does not
check the inner Ethernet
header for 802.1Q VLAN tags.
Enabling ARP flood suppression
Use ARP flood suppression to reduce ARP request broadcasts.
