NBB-800
User Manual for NRSW version 4.5.0.100
WAN Settings
This page can be used to configure WAN specific settings like the Maximum Segment Size (MSS).
The MSS corresponds to the largest amount of data (in bytes) that the router can handle in a single,
unfragmented TCP segment. In order to avoid any negative side effects the number of bytes in the
data segment and the headers must not add up to more than the number of bytes in the Maximum
Transmission Unit (MTU). The MTU can be configured per each interface and corresponds to the
largest packet size that can be transmitted.
NetModule Router Simulator
Hostname NB1600
Software Version 4.4.0.103
© 2004-2020, NetModule AG
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TCP Maximum Segment Size
The maximum segment size defines the largest amount of data of TCP packets (usually MTU minus 40). You
may decrease the value in case of fragmentation issues or link-based limits.
MSS adjustment:
enabled
disabled
Maximum segment size:
1380
Apply
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Figure 5.4.: WAN Settings
Parameter
TCP MSS Settings
MSS adjustment
Enable or disable MSS adjustment on WAN interfaces.
Maximum segment size
Maximum number of bytes in a TCP data segment.
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