26.1.7 VNI mapping method

There are two VNI mapping methods: VLAN mapping and subinterface mapping.

<Structure of this section>

(1) VLAN Mapping

Assign a VNI to VLAN. The maximum number of VNI that can be set is 4094 VLAN. By setting the configuration command vxlan vlan-mapping mode, you can extend the capacity limit for VLAN ports that can be operated by VLAN mapping.

The following tables show whether or not a VLAN with VNI assigned to the same port can coexist when a VLAN without VNI is set.

Table 26-3: Whether or not VNI can be allocated to a VLAN that allocates VNI on the same port. Whether or not VLAN can coexist
Item	Whether or not VLAN for Layer 2 functionality can coexist
When the capacity limit is not extended	Can coexist*
Extending capacity requirements	Cannot be used

#: The functions available for VNI assigned VLAN are the same as those available for VNI assigned VLAN. For more information, see "Availability of other functions on 22-5 VXLAN Access and VXLAN Network ports". If a VLAN to which a VNI has been assigned is specified as a native VLAN, co-existence is disabled.

The following diagram shows a sample VLAN map.

Figure 26-4: Sample VLAN Mapping

VNI ID assigned to VTEP are used to connect between the bases shown in this diagram. Set the same VNI ID between the connected sites.

Site A and Site Z:VNI 1
Site B and Site Z:VNI 2
Site C and Site Z:VNI 3

VLAN ID that differ from the destination office can also be set as VLAN ID belonging to VNI.

(2) Subinterface mapping

Assign a VNI for each physical port or channel group subinterface.

A subinterface is a function that combines an Ethernet or port-channel with a VLAN Tag(VLAN ID to build a logical interface. Therefore, if VLAN ID for identifying a subinterface is the same but the source Ethernet or port channel is different, it can be recognized as a different interface and different VNI can be assigned to the same VLAN ID. Note that VLAN for Layer 2 functionality cannot coexist in subinterface mapping.

The following figure shows an example of subinterface mapping.

Figure 26-5: Example of subinterface mapping

VNI ID assigned to VTEP are used to connect between the bases shown in this diagram. Set the same VNI ID between the connected sites.

Site A and Site Z:VNI 1
Site B and Site Z:VNI 2
Site C and Site Z:VNI 3

(3) Notes on VNI Mapping Method

VLAN mappings and subinterface mappings cannot be mixed within the same interface (physical port or channel group).
VLAN mappings and subinterface mappings cannot have the same VNI. Different VNI allow a mix of VLAN mappings and subinterface mappings within a single switch.