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

Configuring Expand-Over-ATM Lines
Expand Configuration and Management Manual — 529522-013
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Profile Modifiers
Profile Modifiers
This subsection lists the recommended modifiers for single-line Expand-over-ATM
line-handler processes and describes the modifiers provided for configuring special
features. It also describes default values and value ranges for all the modifiers
contained in the PEXQSATM profile.
Recommended Modifiers
Recommended modifiers are modifiers that should be used to obtain optimum
performance and efficiency.
L4CONGCTRL_ON
Default: ON
Units: Not applicable
Range: ON or OFF
This modifier enables the congestion control mechanism. Because data transfer with
the UDP is not guaranteed, the Expand End-to-End protocol is used to achieve reliable
communications for Expand-over-ATM connections. You can avoid congestion and
improve error recovery by using the L4CONGCTRL_ON modifier. The
L4CONGCTRL_ON modifier is also recommended for Expand line-handler processes
that are part of a multi-CPU path.
You should read the description of the congestion control feature in Section 17,
Subsystem Description, before using this modifier. The L4CONGCTRL_ON modifier is
described in detail in Section 16, Expand Modifiers.
PATHPACKETBYTES n
Default: 1024
Units: Bytes
Range: 0 or 1024 through 9180 (9180 is recommended)
This modifier enables the variable p
acket size feature and specifies the maximum size,
in bytes, of a variable packet. PATHPACKETBYTES can be used on Expand-over-ATM
lines to increase the size of frames transmitted between neighboring nodes.
You should read the description of the variable p
acket size feature in Section 17,
Subsystem Description, before using this modifier. The PATHPACKETBYTES modifier
is described in detail in Section
16, Expand Modifiers.
Note. A different profile is provided for Expand-over-ATM lines that are part of a multi-line
path; this profile is described in Section
13, Configuring Multi-Line Paths.