Ruijie RG-WLAN Series

Configuration Guide Configuring TCP
8.2.1 Optimizing TCP Performance
Scenario
For example, TCP connection is established between A and D, as shown in the following figure. The MTU of the link between
A and B is 1500 bytes, 1300 bytes between B and C, and 1500 bytes between C and D. To optimize TCP transmission
performance, packet fragmentation should be avoided between B and C.
Figure 8-1
Remarks:
A, B, C and D are routers.
Deployment
 Enable PMTUD on A and D.
8.2.2 Detecting TCP Connection Exception
Scenario
For example, in the following figure, User logs in to A through telnet but is shut down abnormally, as shown in the following
figure. In case of TCP retransmission timeout, the User's TCP connection remains for a long period. Therefore, TCP
keepalive can be used to rapidly detect TCP connection exception.
Figure 8-2
Remarks:
A is a router.
Deployment
 Enable TCP keepalive on A.