Expand Configuration and Management Manual (H06.21+, J06.10+)

Configuring Expand-Over-ServerNet Lines
Expand Configuration and Management Manual — 529522-013
12 - 13
Profile Modifiers
For the next steps, such as installing a new cluster, migration, or adding a node, see
the ServerNet Cluster Manual or the ServerNet Cluster 6780 Planning and Installation
Guide .
Profile Modifiers
This subsection lists the modifiers provided for configuring special features. It also
describes default values and value ranges for all the modifiers contained in the
PEXPSSN profile.
Modifiers for Special Features
The L4CONGCTRL_ON modifier is provided in the PEXPSSN profile to enable you to
configure the congestion control feature. The L4CWNDCLAMP modifier is provided in
the PEXPSSN profile to enable you to configure the congestion control transmit
window feature. For configuration considerations for congestion control feature, see
Section 17, Subsystem Description. For more information on the advantages and
disadvantages of congestion control feature, see Section 3, Planning a Network
Design. The L4CONGCTRL_ON and L4CWNDCLAMP modifiers are described in
detail in Section 16, Expand Modifiers.
PEXPSSN Modifiers
The disk file $SYSTEM.SYSnn.PEXPSSN defines modifiers for Expand-over-ServerNet
line-handler processes.
Table 12-2 lists the default value and range of values for each modifier in this profile, if
applicable. For modifiers that are mutually exclusive, a check mark (3) is shown in the
“Default Value” column to indicate which modifier is present in the profile. For a
complete description of the modifiers listed in this table, see Section
16, Expand
Modifiers.
Note. The multipacket frame and variable packet size features are not supported on Expand-
over-ServerNet connections.
Table 12-2. PEXPSSN Modifiers for Expand-over-ServerNet Lines (page 1 of 2)
Modifier Default Value Range of Values
AFTERMAXRETRIES_DOWN
AFTERMAXRETRIES_PASSIVE 3
ASSOCIATEDEV
1
$ZZSCL Any 8-character string
COMPRESS_OFF
COMPRESS_ON 3
CONNECTTYPE_ACTIVEANDPASSIVE 3
CONNECTTYPE_PASSIVE
EXTMEMSIZE 8192 0 through 32767