TCP/IP routing functions by release
Before you plan to use a routing function, make sure that your system is at the correct release to support the function that you want to perform.
V3R1: Static route-based packet forwarding
V3R7/V3R2: Serial Line Internet Protocol (SLIP), Proxy Address Resolution Protocol (ARP) routing, and unnumbered connection network support
V4R1: Dynamic Routing Information Protocol Version 1 (RIPv1)
V4R2: Dynamic Routing Information Protocol Version 2 (RIPv2), transparent subnetting, and duplicated route-based load-balancing
V4R3: Virtual IP addresses, IP address masquerading, network address translation (NAT), and Classless Inter-Domain Routing (CIDR)
V4R4: IP over OptiConnect
V5R4: Preferred interface list
V6R1: Open Shortest Path First (OSPF) routing protocol and virtual IP address support for IPv6 addresses