Multiple Virtual Routers Support on SD-WAN Branch
Table of Contents
Multiple Virtual Routers Support on SD-WAN Branch
Multiple virtual routers on the SD-WAN branch allow you to use overlapping subnet IP
addresses on both hub and branch devices.
Certain deployments require the routing infrastructure to be separated over their
SD-WAN overlays. For this kind of deployments, we have introduced the support for
multiple virtual routers on the SD-WAN branches that enable you to have overlapping
IP subnet addresses on both the hub and branch devices. This feature adds to the
SD-WAN capability to logically separate the routing infrastructure over SD-WAN and
provides the ability to use overlapping IP subnets.
Multiple virtual routers can run multiple instances of routing protocols with a
neighboring router with overlapping address spaces configured on different virtual
router instances. Multiple virtual router deployments provide the flexibility to
maintain multiple virtual routers, which are segregated for each virtual router
instance.
You can now enable
Multi-VR Support
on the SD-WAN branch
device to keep the traffic of different entities separate. A maximum of 20 virtual
routers can be configured on the SD-WAN branch. However, the number of virtual
routers supported on the PAN-OS SD-WAN branch varies by platform.The following figure illustrates three SD-WAN branches with each configured with two
virtual routers. By enabling
multiple virtual routers support
on the SD-WAN
branches, the three branches connecting to the same SD-WAN hub can have overlapping
IP subnets or belong to different entities and function independently because their
traffic goes to different virtual routers. To enable multiple virtual routers on the
SD-WAN branch, the SD-WAN hub connecting to the branches must be
also be configured with multiple virtual routers. 