I am communicating with two devices using my computer over UDP protocol. The application is running fine. When I monitored the UDP traffic using Wireshark software, I found that there were too many Checksum errors.
Please find attached the png file showing this error. I am about to deliver the solution to the customer and have full confidence that the communication is ok. I have however little knowledge in the field of networking.
Any comments on these checksum errors will help me put a strong technical report to the customer.
Does anyone know the answer to this?
When I run "sum -r" on a file that I've down loaded from the sco website, the 1st set of numbers differs from the checksum on the download page but the
2nd set matches.
If I try to install the patch, I get errors.
Anyone has an answer? (3 Replies)
Dear All
I have written a client server program for file transmission from one system to other using UDP.
Can i use the cksum number in the udp header to validate if the received packet is corrupted or not? If yes, how can i extract the header and validate it..
Also is there any way that... (3 Replies)
Anyone can tell me the different between "cksum" and "sum" command on Solaris? I read the man pages but still not get it.
And how to display the md5 checksum for a file.
Thanks, (1 Reply)
I wanted a script that can give the checksum of a particular zipped file.
Can somebody help me in writing a shell script in getting the checksum of a particular tar file. (1 Reply)
Hello sir,,
i m doing network programming in C
could u plzz let me know...at the time of udp checksum calculation does htons() or ntohs() play some role..??
i mean will there be any difference if some values are added in network form and other is in the host form...
Thnx 4 ur time..
... (4 Replies)
Hi All,
I installed Ubuntu10.04LTS after using it for some day , a problem started ,at system boot time error is coming
Bad BIOS checksum.Starting BIOS recovery.
checking for floppy.checking for CD is coming repeatedly but system is not cuming up.
After sometime output was also not... (0 Replies)
I'm on SCO 5.07. Just installed mini tape. Getting CMOS/GPNV checksum error when I turn on the machine and have to go into bios. I just hit f10 and I continue. When loading SCO and it get to the mini tape I get Warning: SCSI boot options ignored: Bad paremeter count. It's a QIC 80.
When in bios if... (2 Replies)
Hi ALL,
I use solaris OS and SFTP to get/put files from remote server.I use the below command ,
sftp user@host<<EOF
cd "dir"
get --checksum "filename"
EOF
I am getting a strange error as " get --checksum INVALID paramter". It has been working succesfully since last 3 years but all of a... (1 Reply)
Hi Guys,
Sometimes, I have a problem with transferred files in ftp session. Thats why I want to produce checksum value in my local server and remote server. But I could not find anyway to produce checksum value of transferred files in remote server.
Do you have any idea?
Thanks,
Emre (3 Replies)
Hello good people,
I came across md5 checksum. Can anyone please explain to me what it does and if possible an example of how to use it?
Thank you very much (1 Reply)
Discussion started by: cjashu
1 Replies
LEARN ABOUT HPUX
strctlsz
STRCTLSZ(5) File Formats Manual STRCTLSZ(5)NAME
STRCTLSZ - maximum size of streams message control (bytes)
VALUES
Failsafe
Default
Allowed values
Recommended values
DESCRIPTION
limits the maximum number of bytes of control data that can be inserted by in the control portion of any streams message on the system. If
the tunable is set to zero, there is no limit on how many bytes can be placed in the control segment of the message.
returns if the buffer being sent is larger than the current value of
Who Is Expected to Change This Tunable?
Any customer.
Restrictions on Changing
Changes to this tunable take effect at next reboot.
When Should the Value of This Tunable Be Raised?
The tunable should be increased by any customer if the customer's STREAMS module/driver(s) require more bytes in the control portion of any
streams message than the current value.
What Are the Side Effects of Raising the Value of This Tunable?
The kernel will use more memory. During low memory situations, it may bring down system performance due to frequent swapping.
When Should the Value of This Tunable Be Lowered?
The tunable could be lowered by any customer if the customer's STREAMS module/driver(s) do not require a longer message size in the control
portion than the current value.
What Are the Side Effects of Lowering the Value of This Tunable?
Possible improper functioning in any of the STREAMS module/driver(s). Possible performance degradation, particularly in networking.
What Other Tunable Should Be Changed at the Same Time as This One?
None.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by HP.
Tunable Kernel Parameters STRCTLSZ(5)