HP Storageworks 8100 - enterprise virtual array, User Manual

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8 256 to 512
9 512 or greater
TCP window size recommendations
Table 17 through Table 23 provide TCP window scaling factor and window size settings for specific
WAN environments. These tables are organized by typical link speed.
NOTE:
The TCP window size recommendations listed in Table 17 through Table 23 are based on low-loss
networks (0.0012% average packet-loss ratio over 24 hours). For higher-loss, longer-latency networks,
you should reduce the recommended window size and scaling factor by one setting to compensate
for the increased number of packet retransmissions.
Table 17 T1/DS-1 1.554 Mb/Sec (Bandwidth = 1 Mb)
Compression recommend-
ation
Scaling factor (2
n
)
Window size (bytes)
Round trip time (RTT) in
ms
Yes 1 64K 250
Yes 0 32K 100
Yes 0 32K 50
Yes 0 32K 25
Yes 0 32K 20
Yes 0 32K 15
Yes 0 32K 10
Yes 0 32K 5
Yes 0 32K 2.5
Yes 0 32K 1 or less
Table 18 T3/DS-3 45 Mb/Sec (Bandwidth = 43 Mb)
Compression recommend-
ation
Scaling factor (2
n
)
Window size (bytes)
Round trip time (RTT) in
ms
Yes 5 1M 250
Yes 4 512K 100
Yes 3 256K 50
Yes 2 128K 25
Yes 2 128K 20
MPX200 FCIP 130