Source port on AIX for NAS is same? Post: 303018978

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Operating Systems AIX Source port on AIX for NAS is same? Post 303018978 by Scrutinizer on Wednesday 20th of June 2018 12:51:09 PM

06-20-2018

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It seems to me your problem is because of the firewall in between that is interfering with NFS communication. I think that the reason that you are having more problems with nfs_use_reserved_ports=1 is that there are fewer ports in the pool and you are therefore more likely to reuse a port that the Netapp SVM thinks is still in use. I think this can happen when the firewall interferes with normal communication and therefore the Netapp SVM has not learned that a port is no longer in use.

The firewall is probably configured to drop, rather than reject packets, so that is something that you could look into. Another thing to investigate is keep-alive signals and timeouts, to ensure that the firewall does not interfere..

That being said, it may be that your particular brand just does not work well with NFS, no matter what you try.

I am guessing that you are using a firewall to limit which systems are allowed to approach the filer, but I think it would be better if you put the firewall around the systems and the storage SVM so that there is a clear path between them, while also limiting which servers can approach the SVM.

Last edited by Scrutinizer; 06-20-2018 at 03:18 PM..

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LEARN ABOUT CENTOS

radtest

RADTEST(1)							 FreeRADIUS Daemon							RADTEST(1)

NAME

       radtest - send packets to a RADIUS server, show reply

SYNOPSIS

       radtest [-d raddb_directory] [-t pap/chap/mschap] [-x ] [-4 ] [-6 ] user password radius-server nas-port-number secret [ppphint] [nasname]

DESCRIPTION

       radtest	is  a  frontend to radclient(1). It generates a list of attribute/value pairs based on the command line arguments, and feeds these
       into radclient. It's a fast and convenient way to test a radius server.

OPTIONS

       -d raddb_directory
	      The directory that contains the RADIUS dictionary files. Defaults to /etc/raddb.

       -t pap/chap/mschap/eap-md5
	      Choose the authentiction method to use.  e.g. "-t pap", "-t chap", "-t mschap", or "-t eap-md5",.  Defaults to "pap".  Using EAP-MD5
	      requires that the "radeapclient" program is installed.

       -x     Enables debugging output for the RADIUS client.

       -4     Use NAS-IP-Address for the NAS address (default)

       -6     Use NAS-IPv6-Address for the NAS address (default)

       user   Username to send.

       password
	      Password of the user.

       radius-server
	      Hostname or IP address of the radius server. Optionally, you may specify a port by appending :port

       nas-port-number
	      The  value  of  the NAS-Port attribute. Is an integer between 0 and 2^31, and it really doesn't matter what you put here. 10 will do
	      fine.

       secret The shared secret for this client.

       ppphint
	      If you put an integer > 0 here, radtest (or actually radclient) will add the attribute Framed-Protocol = PPP to the request packet.

       nasname
	      If present, this will be resolved to an IP address and added to the request packet as the NAS-IP-Address	attribute.  If	you  don't
	      specify it, the local hostname of the system will be used.

SEE ALSO

       radiusd(8), radclient(1).

AUTHOR

       Miquel van Smoorenburg, miquels@cistron.nl.

								   5 April 2010 							RADTEST(1)