protocol connection wan send def-buf-size
Sets the WAN send buffer size for HS-TCP.
Syntax
[no] protocol connection wan send def-buf-size <bytes>
Parameters
<bytes> | WAN send buffer size in bytes. The default value is 262140. |
Usage
To configure your WAN buffer you must increase the WAN buffers to twice Bandwidth Delay Product (BDP) or 10 MB. You can calculate the BDP WAN buffer size. For example:
Bandwidth = 155000000 Mbps
Delay = 100 ms
For a link of 155 Mbps and 100 ms round-trip delay, set the WAN buffers to
2 * 155000000 * 0.1 / 8 = 3875000
To calculate the BDP for a link
bandwidth * delay / 8 / MTU = X
If X is greater than the default (256 KB), enable HS-TCP with the correct buffer size.
The no command option resets the buffer size to the default.
Example
amnesiac (config) # protocol connection wan send def-buf-size 3875000
Product
SteelHead CX, SteelHead EX, SteelHead-v, SteelHead-c
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