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ONTAP Discussions

Network Mismatch on two controllers/filers

GDASARE

Hi guys ,

 

NetApp Release 8.1.1P1 7-Mode

FAS2240-4

on NPD01

36 disks BSAS drives

 

I keep getting network errors and we seem to have IO issues on these filers. Does anyone know how to fix this and what steps I need to take?

Here is the error below.

 

Following is the content of /etc/rc file-

#Auto-generated by setup Wed Dec 16 06:11:22 GMT 2009

hostname NPD01

ifgrp create single ifgrp-cifs e0a e0c

ifgrp create single ifgrp-ipstorage e0b e0d

 

ifconfig ifgrp-cifs `hostname`-ifgrp-cifs netmask 255.255.192.0 mtusize 1500 trusted wins partner ifgrp-cifs up

ifconfig ifgrp-ipstorage `hostname`-ifgrp-ipstorage netmask 255.255.255.0 mtusize 1500 trusted -wins partner ifgrp-ipstorage up

 

ifconfig e0M `hostname`-e0M netmask 255.255.192.0 mtusize 1ult 10.114.0.1 1

routed on

options dns.domainname npd.nwct.local

options dns.enable on

options nis.enable off

savecore

 

 

 

Following is the content of /etc/rc file-

#Auto-generated by setup Wed Dec 16 04:38:18 GMT 2009

hostname NPD02

ifgrp create single ifgrp-cifs e0a e0c

ifgrp create single ifgrp-ipstorage e0b e0d

 

ifconfig ifgrp-cifs `hostname`-ifgrp-cifs netmask 255.255.192.0 mtusize 9000 trusted wins partner ifgrp-cifs up

 

ifconfig e0M `hostname`-e0M netmask 255.255.192.0 mtusize 1500 trusted wins mediatype auto flowcontrol full down

ifconfig ifgrp-ipstorage `hostname`-ifgrp-ipstorage netmask 255.255.255.0 partner ifgrp-ipstorage mtusize 9000 trusted -wins up

 

route add default 10.114.0.1 1

routed on

options dns.domainname npd.nwct.local

options dns.enable on

options nis.enable off

savecore

 

6 REPLIES 6

ekashpureff

 

GD -

 

I notice a mismatch in the MTU between the two ifgrps on filer A and filer B ...

 


I hope this response has been helpful to you.

 

At your service,

 

Eugene E. Kashpureff, Sr.
Independent NetApp Consultant http://www.linkedin.com/in/eugenekashpureff
Senior NetApp Instructor, FastLane US http://www.fastlaneus.com/
(P.S. I appreciate 'kudos' on any helpful posts.)

 

GDASARE

yes we had this setup to deal with latency issues between filer and VMware servers. we will probably change this back since it didnt make a difference.

ekashpureff

 

GD -

 

Using Jumbo frames is Best Practice in many environs.

Params should match end to end.

 

I was noting that there was a mismatch in the configuration between the two controllers and ifgrps.

This was likely the origin of the error message you were seeing.

 


I hope this response has been more helpful to you.

 

At your service,

 

Eugene E. Kashpureff, Sr.
Independent NetApp Consultant http://www.linkedin.com/in/eugenekashpureff
Senior NetApp Instructor, FastLane US http://www.fastlaneus.com/
(P.S. I appreciate 'kudos' on any helpful posts.)

 
 

 

GDASARE

@ekashpureff wrote:

 

GD -

 

Using Jumbo frames is Best Practice in many environs.

Params should match end to end.

 

I was noting that there was a mismatch in the configuration between the two controllers and ifgrps.

This was likely the origin of the error message you were seeing.

 


I hope this response has been more helpful to you.

 

At your service,

 

Eugene E. Kashpureff, Sr.
Independent NetApp Consultant http://www.linkedin.com/in/eugenekashpureff
Senior NetApp Instructor, FastLane US http://www.fastlaneus.com/
(P.S. I appreciate 'kudos' on any helpful posts.)

 
 

 


 

 

 I see what your saying. Does it matter that I have one Filer that is strickly for NFS shares and the other volume with the 9000 mtu has only One ISCI volume?

JGPSHNTAP

When you say network errors, what do you mean?

 

Run ifstat -a and look at the XON / XOFF

 

 

GDASARE

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