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
You need to compare the traffic on the cable with the traffic the TCP/IP stack processes.
This should show if the cable shows an acknowledge, but the processor has no resources available to receive and process the acknowledge.
Hi Per Westermark
Thank you for reply
Please find url screen shot of TCP error.
s000.tinyupload.com/
I have one query, is there a possibility that all the frames will be processed by the PHY?
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