Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 10
3Com Corporation
10-27
Example
# Clear UDP traffic statistics information.
<3Com> reset udp statistics
10.1.27 tcp mss
Syntax
tcp mss value
undo tcp mss
View
Interface view
Parameter
Value: The threshold for the TCP packet to be fragmented, with the value ranging from
128 to 2048.
Description
Use the tcp mss command to designate a value as a threshold for TCP packets to be
fragmented. The undo tcp mss command is used to prevent TCP packets from being
fragmented. As the default MTU of the interface being 1500 bytes, this restricts the total
length of encryption packet head + data link expenditure + IP packet head + TCP
packet to 1500 bytes. So the dear length of TCP packets to fragment may be about
1200 bytes.
By default, TCP packets are not fragmented.
Example
# Configure the threshold of TCP packet fragmentation to be 300.
[3Com-Ethernet0/0/0] tcp mss 300
10.1.28 tcp timer fin-timeout
Syntax
tcp timer fin-timeout time-value
undo tcp timer fin-timeout
View
System view