Configuring an IPv6 VXLAN Tunnel
VXLAN is a tunneling technology that uses MAC-in-UDP encapsulation to extend large Layer 2 networks. If an underlay network is an IPv6 network, you can configure an IPv6 VXLAN tunnel for a virtual network to access a large number of tenants.
Context
After you configure local and remote VNIs and VTEP IPv6 addresses, an IPv6 VXLAN tunnel is statically created. This configuration is simple, and no protocol configurations are involved. To ensure the proper forwarding of IPv6 VXLAN packets, IPv6 VXLAN tunnels must be configured on VXLAN gateways.
Procedure
- Run system-view
The system view is displayed.
- Run bridge-domain bd-id
The BD view is displayed.
bd-id specified in this command must be the same as bd-id specified in Step 2 in the service access point configuration.
- Run vxlan vni vni-id
A VNI is created and associated with the BD.
To interconnect a VXLAN with a VPLS network, run the vxlan vni vni-id split-horizon-mode command on the edge device belonging to both networks to create a VNI, associate the VNI with a BD, and implement split horizon forwarding.
- Run quit
Return to the system view.
- Run interface nve nve-number
An NVE interface is created, and the NVE interface view is displayed.
- Run source ipv6-address
Configure an IPv6 address for the source VTEP.
Either a physical or loopback interface's address can be specified as a source VTEP's IPv6 address. Using the loopback interface's address is recommended.
- Run vni vni-id head-end peer-list { ipv6-address } &<1-10>
Configure an IPv6 ingress replication list.
With this function, the ingress of an IPv6 VXLAN tunnel replicates and sends a copy of any received BUM packets to each VTEP in the ingress replication list (a collection of remote VTEP IPv6 addresses).
Currently, BUM packets can be forwarded only through ingress replication. This means that non-Huawei devices must have ingress replication configured to establish IPv6 VXLAN tunnels with Huawei devices. If ingress replication is not configured, the tunnels fail to be established.
- Run commit
The configuration is committed.