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Source port on AIX for NAS is same?

 
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Operating Systems AIX Source port on AIX for NAS is same?
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# 15  
Old 06-21-2018
Quote:
Originally Posted by anil1000
How to keep it alive? What do you mean by this, which connection to keep it alive? Kindly suggest..
In regular intervals packets are sent in an existing connection to make sure the partner still is there. These packets are called "keepalive" packets. If these packets are not received the partner assumes that the other side went dead and closes the connection.

Think of a connection like a telephone call: when you talk to someone you expect some sort of acknowledgement that the other is still listening at times, be it "aha" or "hmm" or something such. If you don't get that you may ask "are you still there" - and if there is no answer you hang up. This is quite the same mechanism.

I hope that helps.

bakunin
 
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LEARN ABOUT CENTOS

ldns-notify

ldns-notify(1)						      General Commands Manual						    ldns-notify(1)

NAME

       ldns-notify - notify DNS servers that updates are available

SYNOPSIS

       ldns-notify [options] -z zone servers

DESCRIPTION

       ldns-notify  sends a NOTIFY message to DNS servers. This tells them that an updated zone is available at the master servers. It can perform
       TSIG signatures and it can add a SOA serial number of the updated zone.	If a server already has that serial number it will  disregard  the
       message.

OPTIONS

       -z zone
	      The zone that is updated.

       -h     Show usage and exit

       -v     Show the version and exit

       -s serial
	      Append a SOA record indicating the serial number of the updated zone.

       -p port
	      Use port as destination port (default the DNS port 53) for the UDP packets.

       -y key:data
	      Use the given TSIG key and base64-data to sign the NOTIFY. Uses the hmac-md5 algorithm.

       -d     Print verbose debug information. The query that is sent and the query that is received.

       -r num Specify the maximum number of retries before notify gives up trying to send the UDP packet.

EXIT CODE

       The program exits with a 0 exit code if all servers replied an acknowledgement to the notify message, and a failure exit code otherwise.

AUTHOR

       Written by the ldns team as an example for ldns usage.

REPORTING BUGS

       Report bugs to <ldns-team@nlnetlabs.nl>.

COPYRIGHT

       Copyright  (C)  2005 NLnet Labs. This is free software. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR-
       POSE.

								    9 Jan 2007							    ldns-notify(1)