BGP multi-instance
A BGP router can run multiple BGP processes. Each BGP process corresponds to a BGP instance. BGP maintains an independent routing table for each BGP instance.
You can create multiple public address families for a BGP instance. However, each public address family (except for public IPv4 unicast, public IPv6 unicast, public VPNv4, and public VPNv6 address families) can belong to only one BGP instance.
You can create multiple VPN instances for a BGP instance, and each VPN instance can have multiple address families. A VPN instance can belong to only one BGP instance.
Different BGP instances can have the same AS number but cannot have the same name.