[Sis-SCPS-INTEREST] checksum errors

[Jayasri Sangu]

Hi All,

    I have a network setup with 5 machines

   A-------- B -------- C ------D --------E
 

	C is a delay machine with the 600ms roundtrip delay.

            B & D have the gateway with the following configuration   
		./configure --gateway=yes --tun=yes   --low_idle=yes --low_cpu=yes 

            The rfile on both B and D is

	# GW Resource File - comments are allowed, starting with '#'.
#    Comments can be anywhere EXCEPT between parameter values.

# interface A info
AIF_NAME        eth1
AIF_RATE        10000000
AIF_BUF         32768
AIF_CC          1
AIF_TCPONLY     1
AIF_MTU         1500
AIF_TUN_NAME    tun0


# interface B info
BIF_NAME        eth2
BIF_BUF         1000000
BIF_RATE        1000000
BIF_CC          0
BIF_MINRTO      600000
BIF_TUN_NAME    tun1

# IPFW info
C_DIVPORT       52000
C_TUN_NAME	    tun2


I am doing file transfer from E to A. 

I can see the TCP checksum errors between D and C on some packets, but I don't see any checksum errors between E and D on the same packets.


Is somethog wrong with my setup??

Is this something to do with the tp_Handler() function , 32bit alignment ???     


Thanks
Jayasri


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