topic Network Mismatch on two controllers/filers in ONTAP Discussions

Network Mismatch on two controllers/filers

GDASARE — Wed, 04 Jun 2025 15:19:18 GMT

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

Re: Network Mismatch on two controllers/filers

JGPSHNTAP — Thu, 16 Mar 2017 22:12:40 GMT

When you say network errors, what do you mean?

Run ifstat -a and look at the XON / XOFF

Re: Network Mismatch on two controllers/filers

ekashpureff — Thu, 16 Mar 2017 22:14:25 GMT

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.)

Re: Network Mismatch on two controllers/filers

GDASARE — Thu, 16 Mar 2017 23:05:11 GMT

all show zero

Re: Network Mismatch on two controllers/filers

GDASARE — Thu, 16 Mar 2017 23:06:05 GMT

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.

Re: Network Mismatch on two controllers/filers

ekashpureff — Thu, 16 Mar 2017 23:12:19 GMT

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,

Re: Network Mismatch on two controllers/filers

GDASARE — Thu, 16 Mar 2017 23:18:31 GMT

@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?