Expand Configuration and Management Manual (G06.24+)

Expand Modifiers
Expand Configuration and Management Manual—523347-008
17-11
FRAMESIZE n
FRAMESIZE n
Default: 132
Units: Words
Range: 64 through 2047
This Layer 2 modifier is applicable to all Expand line types. This modifier specifies the
maximum size frame that can be sent in the network; smaller frames may be sent. The
FRAMESIZE modifier is also used by the Expand subsystem to calculate the packet
size, which determines the size of the frame buffers.
The Expand subsystem calculates the packet size (in words) using the following
formula:
packet_size = FRAMESIZE - 4
If the default FRAMESIZE modifier value is used, the packet size is 128 words. The
FRAMESIZE modifier, packet size, and frame buffers are described in Section 18,
Subsystem Description.
INTERFACE_RS232/INTERFACE_RS422
Default: INTERFACE_RS232
Units: Not applicable
Range: ON or OFF
These communications hardware modifiers are applicable to direct-connect and
satellite-connect line-handler processes only. The INTERFACE_RS232 modifier
specifies that RS-232 is the type of modem connected to the interface. The
INTERFACE_RS422 modifier specifies that RS-422 is the type of modem connected to
the interface.
IPVER_IPV4/IPVER_IPV6
Default: IPv4
Units: Not applicable
Range: Not applicable
This modifier specifies whether to create an IPv4 or an IPv6 socket. If IPv4, the
ASSOCIATEDEV parameter can refer to any NonStop TCP/IP product and the
SRCIPADDR and DESTIPADDR modifiers are used for the local and remote IP
addresses. If IPv6, the ASSOCIATEDEV parameter must refer to NonStop TCP/IPv6
and the V6SRCIPADDR and V6DESTIPADDR modifiers are used for the local and
remote IP addresses.
Note. The line-handler FRAMESIZE value must be the same for every Expand line-handler
process on every node in the network. However, the FRAMESIZE modifier value specified for
the network control process ($NCP) must be equal to or less than the line-handler
FRAMESIZE, but it does not have to be the same on all nodes in the network.