H06.25 Release Version Update Compendium

8 Networking Products
Expand Congestion Control
This enhancement is implemented to address a situation where the system is transmitting data at
a steady rate interleaved with very short bursts of data. This burst of data sent by Expand could
exceed the gateway router bandwidth, resulting in dropped packets. This causes Expand to restart
transmission of packets dropped by the gateway router leading to extra latency, which could result
in acknowledgement timeout in applications. To improve this situation and control the data rate,
a new parameter L4CWNDCLAMP is introduced to set maximum congestion control window.
Migration Considerations
Use new profiles for tuning maximum congestion control window size L4CWNDCLAMP. The SPRs
of the profiles are:
Expand/ServerNet Profile: T0509H01^AAI
Expand/SWANGroup Profile: T0532H01^AAG
Expand/Fastpipe Profile: T0533H01^AAH
Fallback Considerations
None.
Expand Congestion Control 21