topic Change Simplivity node and OVC MTU settings in HPE SimpliVity

Change Simplivity node and OVC MTU settings

CadenLange — Wed, 12 Mar 2025 03:42:17 GMT

Is it supported (and documented) to change the MTU settings for the Federation and storage networks? This is currently set to 9000 for hosts and OVCs but due to networking constraints this figure needs to be reduced to a lower figure (8500).

I suspect this will require CLI commands but can't find a technote on how to achieve this.

many thanks

Re: Change Simplivity node and OVC MTU settings

Sanika — Tue, 11 Mar 2025 06:48:46 GMT

Hi @CadenLange

Yes, the MTU change on the virtual controllers must be made by command line.
To complete the MTU change, the virtual controller services must be stopped, the MTU modified by command line, then the virtual controller services can be started again. This will require elevated command line privileges.

I would suggest to open a support ticket and a HPE engineer will assist doing so.

Regards,
Sanika.

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Re: Change Simplivity node and OVC MTU settings

Sanika — Thu, 13 Mar 2025 06:46:14 GMT

Hi @CadenLange

Please let us know if your concern has been addressed, if yes, then kindly mark this post as 'Accepted solution' so that it is helpful for all community members.

Regards,
Sanika.

Re: Change Simplivity node and OVC MTU settings

jlangmead — Fri, 14 Mar 2025 07:00:54 GMT

Hi @Sanika

I also have a need to change the MTU settings on the OVC - Are the following commmands still valid for the latest SimpliVity versions

Solved: Issue with Simplivity Host deployment - MTU Values - Hewlett Packard Enterprise Community

where xx.xx.xx.xx is the Virtual Controller Storage IP address and yy.yy.yy.yy is the Virtual Controller Federation IP address

sudo su
source /var/tmp/build/bin/appsetup
systemctl stop svtfs@0
dsv-address-change --interface Storage --address xx.xx.xx.xx --mtu 9000
dsv-address-change --interface Federation --address yy.yy.yy.yy --mtu 9000
systemctl start svtfs@0

svt-vm-show --violations

Re: Change Simplivity node and OVC MTU settings

Sanika — Fri, 21 Mar 2025 03:07:55 GMT

Hi jlangmead

Yes, the commands mentioned are still valid.

Regards,
Sanika.

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