Simplified Interinstance Route Sharing System Requirements
To implement simplified interinstance route sharing, your system must meet these minimum requirements:
Junos OS Release 8.2 or later for support on MX Series routers
Junos OS Release 5.4 or later for simplified interinstance route sharing on M Series and T Series routers
Four Juniper Networks M Series, MX Series, or T Series routers for the overlapping VPNs example: Two routers act as PE routers and two act as customer edge (CE) routers
Six Juniper Networks M Series, MX Series, or T Series routers for the nonforwarding instance example: Two act as PE routers and four act as CE routers