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 DEBIAN

fwb_ipfw

fwb_ipfw(1)							 Firewall Builder						       fwb_ipfw(1)

NAME

       fwb_ipfw - Policy compiler for ipfw

SYNOPSIS

       fwb_ipfw [-vVx] [-d wdir] [-o output.fw] [-i] -f data_file.xml object_name

DESCRIPTION

       fwb_ipfw is a firewall policy compiler component of Firewall Builder (see fwbuilder(1)). This compiler generates code for ipfw - a firewall
       and traffic shaper in FreeBSD (see ipfw(8)). Compiler reads objects definitions and firewall description from the data file specified  with
       "-f" option and generates firewall configuration and activation script.

       The  generated file has a name that starts with the name of the firewall object, with an extension ".fw". It is a shell script that flushes
       current policy, then loads new filter and nat rules.

       The data file and the name of the firewall objects must be specified on the command line. Other command line parameters are optional.

OPTIONS

       -f FILE
	      Specify the name of the data file to be processed.

       -o output.fw
	      Specify output file name

       -d wdir
	      Specify working directory.  Compiler creates firewall activation script in this directory.  If this parameter is missing,  then  all
	      files will be placed in the current working directory.

       -v     Be verbose: compiler prints diagnostic messages when it works.

       -V     Print version number and quit.

       -i     When this option is present, the last argument on the command line is supposed to be firewall object ID rather than its name

       -x     Generate debugging information while working. This option is intended for debugging only and may produce lots of cryptic messages.

NOTES

       Support for ipfw was added in version 1.0.10 of Firewall Builder

URL

       Firewall Builder home page is located at the following URL: http://www.fwbuilder.org/

BUGS

       Please report bugs using bug tracking system on SourceForge:

       http://sourceforge.net/tracker/?group_id=5314&atid=105314

SEE ALSO

       fwbuilder(1), fwb_ipt(1), fwb_pf(1) fwb_ipf(1)

FWB
																       fwb_ipfw(1)