Expand Configuration and Management Manual (G06.24+)

Expand Modifiers
Expand Configuration and Management Manual—523347-008
17-28
V6DESTIPADDR n
For Expand-over-NAM, Expand-over-ServerNet, and Expand-over-FOX line-handler
processes, this modifier specifies the number of packets that the Expand line-handler
process can send before receiving acknowledgment from the network access method
(NAM) process.
For satellite-connect and direct-connect line-handler processes, this modifier specifies
the number of packets that the Expand line-handler process can send before receiving
a reply. When using the multipacket frame feature with satellite-connect line-handler
processes, you do not need to have a large TXWINDOW modifier value if the
PATHBLOCKBYTES or PATHPACKETBYTES modifier value is large.
The product of the TXWINDOW modifier value multiplied by the larger of the
PATHPACKETBYTES or PATHBLOCKBYTES modifier values must allow the space for
line buffers to fit within 131064 words. The maximum TXWINDOW modifier value is
calculated using the following formula:
maxtxwindow = int ((131064/(max(pathpacketbytes, pathblockbytes) +4)-2)/2
Therefore, a satellite-connect line with either a PATHBLOCKBYTES or
PATHPACKETBYTES modifier value of 4095 will only have space for 31 buffers. The
TXWINDOW modifier will be set to 14 and readbuffers will be set to 16, even though
the default TXWINDOW modifier value is 18. If these limits are exceeded, event
message 93, cause 8 “Attribute Invalid” is displayed: the TXWINDOW modifier value
and readbuffers will have been reduced to fit within 64K words.
For Expand-over-IP and Expand-over-ATM line-handler processes, this modifier
specifies the number of packets that the Expand-over-IP line-handler process can send
to the NonStop TCP/IP process or that the Expand-over-ATM line-handler process can
send to the ATM subsystem before waiting for a reply.
The TXWINDOW modifier value should be the same at both ends of the Expand
connection.
V6DESTIPADDR n
Default: 0000:0000:0000:0000:0000:0000:0000:0000
Units: Not applicable
Range: Any 45-character string
This modifier is applicable to Expand-over-IP line-handler processes only. This modifier
specifies the destination Internet Protocol (IP) address associated with the NonStop
TCP/IPv6 process used by the remote Expand-over-IP line-handler process.
The default must be changed before the line is started. The address must be specified
by number (for example, 1611:1071:F881:1167:1611:A071:1881:B167). Configuring
NonStop TCP/IPv6 addresses is explained in the TCP/IPv6 Configuration and
Management Manual.