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TCP retransmission

Nagarajan V

Hi All

The processor is LPC2468 running @ 57.6MHz with DP83848I phy in RTX OS and TCPnet stack.

RTL.h version is 3.10/2007.

Currently we are facing TCP retransmission issue in huge network where traffic is more.

Monitored using wireshark, about 500-600 frames per second are seen. Most of the frames are IPver 6 UDP, NBNS etc.

I have having following suspects.

1. The processor speed is not sufficient. Pockets are processed slowly.

2. 16KB ethernet RAM buffers for transmit(2*1536) and receive(3*1536) may be not sufficient.

3. The TCP stack have some issues.

Can anyboby please give some clue?

V.Nagarajan

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