Table 1 lists the new or changed SNA start options.
Refer to z/OS V2R1.0 Communications Server: SNA Resource Definition Reference for more information on start options.
| Start option | Release | Description of update | Reason for change |
|---|---|---|---|
 CSDUMP |
V2R1 |
The RNICTRLE operand
is changed to accept the value MSGVALUE. |
Shared Memory Communications
over RDMA adapter (RoCE) virtualization |
| V2R1 | Changed to accept a new value RNICTRLE as part of a message trigger. | Shared Memory Communications over Remote Direct Memory Access | |
| EEVERIFY | V1R12 | New start option that specifies whether VTAM should automatically send an LDLC probe to the remote partner to determine if all ports are accessible during the activation of the Enterprise Extender (EE) connection. This option also specifies the time interval at which VTAM should send the probe on active EE connections. | Enterprise Extender connection health verification |
| ENSEMBLE | V1R12 | New start option that specifies whether this z/OS Communications Server will permit connectivity to the intraensemble data network and the intranode management network. Access to these networks is through OSA-Express3 features configured in OSX and OSM modes. | z/OS Communications Server in an ensemble |
| IPADDR | V2R1 | Changed to accept an IPv6 address or an IPv4 address | Enterprise Extender IPv6 address configuration |
| MULTPATH | V1R12 | New start option that specifies whether VTAM allows multipath for IPv4 and IPv6 Enterprise Extender connections. | Multipath control for Enterprise Extender |
| PSRETRY | V2R1 | Changed to accept a new IMMED operand value to trigger immediate path switch attempts when a TG is activated or changes status. | Enterprise Extender IPv6 address configuration |
| TRACE | V1R13 | Existing start option. The VIT operand DSPSIZE was used to set the size of the VIT data space when TYPE=VTAM was specified; it is not supported in V1R13 and later. | Increased CTRACE and VIT capacity |
| V1R13 | Existing start option. The VIT operand SIZE, used when TYPE=VTAM is specified, is changed to specify the number of megabytes of HVCommon instead of the number of pages of ECSA. The new valid range of values is 4M to 2048M, inclusive. | Increased CTRACE and VIT capacity | |
| V1R12 | Start option that is changed to accept a new SUBTRACE=DIO option when the TYPE=VTAM OPTION is specified. | Performance improvements for sysplex distributor connection routing |