Change Simplivity node and OVC MTU settings

[CadenLange]

Hi

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

[Sanika · Accepted solution]

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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[Sanika]

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.

[jlangmead]

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

[Sanika]

Hi  jlangmead

Yes, the commands mentioned are still valid.

Regards,
Sanika.

If you feel this was helpful, please click the KUDOS thumb below. Also consider marking this as an "Accepted Solution", if the post has helped to solve your issue.