Perform this procedure to change the maximum number of VRFs and Layer 3 VSNs that the switch supports. By default, the switch supports 24 VRFs and Layer 3 VSNs. Increasing the number of VRFs or Layer 3 VSNs can be useful in a WAN scenario or other large network.
The maximum number of supported VRFs and Layer 3 VSNs differs depending on the hardware platform. For more information about maximum scaling numbers, see Fabric Engine Release Notes.
Important
If you enable this boot config flag, and the switch operates in SPBM mode (default configuration), the switch reduces the number of configurable VLANs. In such a configuration, the switch reserves VLANs 3500 to 3998 for internal use. You cannot use these VLANs as either platform VLANs or B-VLANs. You can still use the reserved VLAN range for customer VLANs (C-VLAN) on Flex UNI and B-VLANs on FE-VID.
Enabling the boot config flag to use more than 24 VRFs requires a Premier or Premier + MACsec license.
If the switch operates in SPBM mode, before you enable this boot config flag, perform the following actions:
Check in-VLAN filters. If a filter references a VLAN in the 3500 to 3998 range, you must delete the filter or the filter configuration fails when you restart the switch.
Delete VLANs in the 3500 to 3998 range.
Before you disable this boot config flag, delete additional VRFs if more than 24 exist.
Note
This field does not apply to all hardware platforms.