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Operating Systems AIX Source port on AIX for NAS is same? Post 303019008 by bakunin on Thursday 21st of June 2018 04:50:55 AM
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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CHECKRAD(5)							File Formats Manual						       CHECKRAD(5)

NAME
checkrad -- See if a user is (still) logged in on a certain port. SYNOPSIS
checkrad [-d] nas-type nas-ip nas-port login session-id DESCRIPTION
Checkrad is used by the radius server to check if its idea of a user logged in on a certain port/NAS is correct if a double login is detected. Returns: 0 = no duplicate, 1 = duplicate, >1 = error. OPTIONS
-d Enable printing of debugging informations. nas-type Type of port/NAS. Can be one of: o ascend o bay o cisco o cisco_l2tp o computone o cvx o digitro o dot1x o livingston o max40xx o mikrotik o mikrotik_snmp o multitech o netserver o other o pathras o patton o portslave o pr3000 o pr4000 o redback o tc o usrhiper o versanet The "other" type cause checkrad to skip any check and always returns 1. nas-ip IP address of the NAS to check. nas-port The NAS port to check (may be ignored by some nas-type). login The login name to check. session-id Session to check. (actually ignored by all nas-type) SEE ALSO
radiusd(8) AUTHOR
Written by Miquel van Smoorenburg, miquels@cistron.nl. This manual page was written by Marco Nenciarini <mnencia@debian.org> for the Debian project (but may be used by others). 13 January 2006 CHECKRAD(5)
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