z/OS-specific features

These tables summarize z/OS® TCP/IP features and the level of support that is provided in an IPv6 network. In the future, more features are projected for IPv6 support in subsequent releases of the z/OS Communications Server.

Table 1 lists the link-layer device support.

Table 1. Link-layer device support
Link-layer device support	IPv4 support	IPv6 support	Comments
OSA-Express in QDIO mode	Y	Y	Fast and Gigabit Ethernet support for IPv6 traffic is configured by way of an INTERFACE statement of type IPAQENET6.
CTC	Y	N	None
LCS	Y	N	None
CLAW	Y	N	None
CDLC (3745/3746)	Y	N	None
SNALINK LU0 and LU6.2	Y	N	None
X.25 NPSI	Y	N	None
NSC HyperChannel	Y	N	None
MPC Point-Point	Y	Y	Support is configured by way of an INTERFACE statement of type MPCPTP6.
ATM	Y	N	None
HiperSockets™	Y	Y	Support is configured by way of an INTERFACE statement of type IPAQIDIO6 or dynamically configured by way of the IPCONFIG6 DYNAMICXCF statement.
XCF	Y	Y	Support is configured by way of an INTERFACE statement of type MPCPTP6 or dynamically configured by way of the IPCONFIG6 DYNAMICXCF statement.

Table 2 lists virtual IP Addressing support.

Table 2. Virtual IP Addressing support
Virtual IP Addressing support	IPv4 support	IPv6 support	Comments
Virtual Device/Interface Configuration for static VIPA	Y	Y	None

All sysplex functions support IPv6 except for the function that is listed in Table 3.

Table 3. Sysplex support
Sysplex support	IPv4 support	IPv6 support	Comments
Sysplex distributor integration with Cisco MNLB	Y	N	None

The following table lists IP routing functions.

Table 4. IP routing functions
IP routing functions	IPv4 support	IPv6 support	Comments
Dynamic Routing - OSPF	Y	Y	None
Dynamic Routing - RIP	Y	Y	None
Multipath Routing Groups	Y	Y	None
Policy-based Routing	Y	Y	None
Static Route Configuration by way of BEGINROUTES statement	Y	Y	None
Static Route Configuration by way of GATEWAY statement	Y	N	None

Table 5 lists miscellaneous IP/IF-layer functions.

Table 5. Miscellaneous IP/IF-layer functions
Miscellaneous IP/IF-layer functions	IPv4 support	IPv6 support	Comments
Path MTU Discovery	Y	Y	None
Configurable Device or Interface Recovery Interval	Y	Y	None
Link-Layer Address Resolution	Y	Y	None
ARP/Neighbor Cache PURGE Capability	Y	Y	None
Datagram Forwarding Enable/Disable	Y	Y	None
HiperSockets accelerator	Y	N	None
QDIO accelerator	Y	N	None
Checksum offload	Y	Y	Based on OSA-Express support
Segmentation offload	Y	Y	Based on OSA-Express support
QDIO inbound workload queueing	Y	Y	Based on OSA-Express support

Table 6 lists transport-layer functions.

Table 6. Transport-layer functions
Transport-layer functions	IPv4 support	IPv6 support	Comments
Fast Response Cache Accelerator	Y	Y	None
Enterprise Extender	Y	Y	IPv6 Enterprise Extender support requires a virtual IP address that is configured by way of an INTERFACE statement of type VIRTUAL6 and IUTSAMEH configured by way of an INTERFACE statement of type MPCPTP6 or dynamically configured by way of IPCONFIG6 DYNAMICXCF.
Server-BIND Control	Y	Y	None
UDP Checksum Disablement Option	Y	N	None

Table 7 lists network management and accounting functions.

Table 7. Network management and accounting functions
Network management and accounting Functions	IPv4 support	IPv6 support	Comments
SNMP	Y	Y	None
SNMP agent	Y	Y	None
TCP/IP subagent	Y	Y	No IPv6 UDP support
Network SLAPM2 subagent	Y	Y	None
Distributed Protocol Interface	Y	Y	None
OMPROUTE subagent	Y	N	None
Trap forwarder daemon	Y	Y	None
Policy-Based Networking	Y	Y	None
SMF	Y	Y	None
TN3270 subagent	Y	Y	None

Table 8 lists security functions.

Table 8. Security functions
Security functions	IPv4 support	IPv6 support	Comments
IPSec	Y	Y	None
IP filtering	Y	Y	None
IKE daemon	Y	Y	None
NAT traversal	Y	N	None
Network Access Control	Y	Y	None
Stack and Port Access Control	Y	Y	None
Application Transparent TLS	Y	Y	None
Intrusion Detection Services	Y	Y	None