“VRF Groups” are short for “VPN Routing & Forwarding Groups”, and they are often utilized by ISPs and other larger network service providers to organize and track customers’ (or their own) logical networks segments, subnets, and VLANs, some of which might overlap with another VRF group, but never within the same VRF group. These VRF groups are often designed so that they cannot route between each other, while all are able to route out to a larger network cloud (e.g. the internet), thus allowing multiple customers to assign IP addresses as they please without interfering with one another.
Device42 users can create VRF groups in Device42 to manage overlapping IP Ranges via the main menu under Network -> VRF Groups. Simply assign networks to VRF groups as appropriate, dividing your individual networks into VRF groups. IP addresses must be unique per VRF group, but you can have overlapping subnet ranges across VRF groups.
Add/Edit a VRF Group page
Name: is required and must be unique among VRF groups.
Description: Free form text to enter any text.
Default: Select this checkbox to have all subnets auto-discovered added to this VRF group automatically (going forward). This option will *not* add existing subnets automatically.
Note that subnets are not displayed on the edit page.
If you make the VRF Group the default, then subnets and IP’s will be automatically assigned to this default VRF group – unless otherwise specified.
View an existing VRF Group
The VRF group view page shows all of your VRF Groups.