Understanding Virtual Routing Instances on EX Series Switches
Virtual routing instances allow administrators to divide a Juniper Networks EX Series Ethernet Switch into multiple independent virtual routers, each with its own routing table. Splitting a device into many virtual routing instances isolates traffic traveling across the network without requiring multiple devices to segment the network.
You can use virtual routing instances to isolate customer traffic on your network and to bind customer-specific instances to customer-owned interfaces.
Virtual routing and forwarding (VRF) is often used in conjunction with Layer 3 subinterfaces, allowing traffic on a single physical interface to be differentiated and associated with multiple virtual routers. Each logical Layer 3 subinterface can belong to only one routing instance.
EX Series switches support IPv4 and IPv6 unicast and multicast VRF traffic.
Juniper Networks EX3200 and EX4200 Series Ethernet Switches support up to 252 IPv4 virtual routing instances and up to 64 IPv6 virtual routing instances. Juniper Networks EX8200 Series Ethernet Switches support up to 252 IPv4 and IPv6 virtual routing instances.
