VXLAN¶

Virtual eXtensible Local Area Networks (VLAN) is used to address the need for overlay networks within virtualized data centers accommodating multiple tenants.

To configure VXLAN, enter the context interface type vxlan from the VRF in which you plan to define VXLAN logical interface. The VXLAN configuration is valid as soon as the VXLAN ID is set.

Here is an example of VXLAN named vxlan100 in VRF main, with a tag identifier 100 and linked to underlying interface named eth0 using the multicast group ‘239.0.0.8’:

vrouter running vrf main# interface vxlan vxlan100
vrouter running vxlan vxlan100#! vni 100
vrouter running vxlan vxlan100# link-interface eth0
vrouter running vxlan vxlan100# group '239.0.0.8'
vrouter running vxlan vxlan100# commit

The VXLAN interface is configured provided eth0 is configured in VRF main.

Let’s fetch the state afer committing this configuration:

vrouter running vrf main# interface vxlan vxlan100
vrouter running vxlan vxlan100# show state
vxlan vxlan100
    mtu 1450
    enabled true
    ethernet
        mac-address 36:22:c6:04:24:49
        ..
    ipv6
        address fe80::3422:c6ff:fe04:2449/64
        ..
    vni 100
    group 239.0.0.8
    link-interface eth0
    learning true
    gbp false
    dst 4789
    src-range
        49152
        65535
        ..
    oper-status UNKNOWN
    counters
        in-octets 0
        in-unicast-pkts 0
        in-discards 0
        in-errors 0
        out-octets 0
        out-unicast-pkts 8
        out-discards 0
        out-errors 0
        ..
    ..

The same configuration can be made using this NETCONF XML configuration:

vrouter> show config xml absolute vrf main interface vxlan vxlan100
<config xmlns="urn:6wind:vrouter">
  <ha xmlns="urn:6wind:vrouter/ha"/>
  <vrf>
    <name>main</name>
    <interface xmlns="urn:6wind:vrouter/interface">
      <vxlan xmlns="urn:6wind:vrouter/vxlan">
        <name>vxlan100</name>
        <enabled>true</enabled>
        <ethernet>
          <auto-negotiate>true</auto-negotiate>
          <enable-flow-control>false</enable-flow-control>
        </ethernet>
        <ipv4>
          <enabled>true</enabled>
        </ipv4>
        <ipv6>
          <enabled>true</enabled>
        </ipv6>
        <learning>true</learning>
        <gbp>false</gbp>
        <dst>4789</dst>
        <src-range>
          <min>49152</min>
          <max>65535</max>
        </src-range>
        <vni>100</vni>
        <link-interface>eth0</link-interface>
        <group>239.0.0.8</group>
      </vxlan>
    </interface>
  </vrf>
</config>