network configuration broadcast domains

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network configuration broadcast domains

Mark Saunders

Our netapp clusters started life on 8.2.x and have now all been upgraded to 9.1, we have a lot of vlans set up in the Default broadcast domain which are flagged on the now site as something which should now be split out.

 

This looks to be a simple enough thing to do using “broadcast-domain split” but I cannot see anything in the docs to say if this is disruptive to any connected systems. While I have been able to split a couple of ports off on our sandpit where the lifs seemed to have no problems and didn’t drop a ping I just wanted to see if anyone can say if we might see any issues if a lif on the vlan ports being split ?

 

Regards

Mark

Data Centre Sysadmin Team

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Re: network configuration broadcast domains

Tim McCarthy
That should be non-disruptive as you are not actually modifying the interfaces up/down actual config.
Just the failover info.

So, use the broadcast-domain split and join commands.
They WILL NOT work if you have subnets defined.
You may need to remove the subnets until you have everything set up the way you want.

just remember to VERIFY at the end:

net int show -failover

YOu are looking to make sure all Data SVM LIFs have a failover-policy of broadcast-domain-wide.
node management should be local

When you run the "net int show -failover" command you should see the failover policy and the ports ONTAP will try.
Make sure they are what you expect.

When you are all done, you should be able to remove any "failover groups" that are not broadcast domains.
When a broadcast-domain is created, it makes a failover group with the same name. Hence, if the failover group exists, but the broadcast domain does not, you should be able to delete it.

Just recheck the interfaces as you go and especially when you are done!

--tmac

Tim McCarthy, Principal Consultant

Proud Member of the #NetAppATeam

I Blog at TMACsRack



On Thu, May 25, 2017 at 5:59 PM, Mark Saunders <[hidden email]> wrote:

Our netapp clusters started life on 8.2.x and have now all been upgraded to 9.1, we have a lot of vlans set up in the Default broadcast domain which are flagged on the now site as something which should now be split out.

 

This looks to be a simple enough thing to do using “broadcast-domain split” but I cannot see anything in the docs to say if this is disruptive to any connected systems. While I have been able to split a couple of ports off on our sandpit where the lifs seemed to have no problems and didn’t drop a ping I just wanted to see if anyone can say if we might see any issues if a lif on the vlan ports being split ?

 

Regards

Mark

Data Centre Sysadmin Team

Managed Services

Phone:- 02476 694455 Ext 2567

The Sysadmin Team promoting PCMS Values ~Integrity~Respect~Commitment~ ~Continuous Improvement~

The information contained in this e-mail is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material.  If you are not the intended recipient of this e-mail, the use of this information or any disclosure, copying or distribution is prohibited and may be unlawful.  If you received this in error, please contact the sender and delete the material from any computer.  The views expressed in this e-mail may not necessarily be the views of the PCMS Group plc and should not be taken as authority to carry out any instruction contained.   The PCMS Group reserves the right to monitor and examine the content of all e-mails.

 

The PCMS Group plc is a company registered in England and Wales with company number 1459419 whose registered office is at PCMS House, Torwood Close, Westwood Business Park, Coventry CV4 8HX, United Kingdom. VAT No: GB 705338743

 


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RE: network configuration broadcast domains

Mark Saunders

Tim

 

Cheers all swapped over with no problems. I didn’t have to remove subnets just manually move the lif to the new failover group.

 

Regards

 

Mark

 

From: tmac [mailto:[hidden email]]
Sent: 25 May 2017 23:12
To: Mark Saunders
Cc: [hidden email]
Subject: Re: network configuration broadcast domains

 

That should be non-disruptive as you are not actually modifying the interfaces up/down actual config.

Just the failover info.

 

So, use the broadcast-domain split and join commands.

They WILL NOT work if you have subnets defined.

You may need to remove the subnets until you have everything set up the way you want.

 

just remember to VERIFY at the end:

 

net int show -failover

 

YOu are looking to make sure all Data SVM LIFs have a failover-policy of broadcast-domain-wide.

node management should be local

 

When you run the "net int show -failover" command you should see the failover policy and the ports ONTAP will try.

Make sure they are what you expect.

 

When you are all done, you should be able to remove any "failover groups" that are not broadcast domains.

When a broadcast-domain is created, it makes a failover group with the same name. Hence, if the failover group exists, but the broadcast domain does not, you should be able to delete it.

 

Just recheck the interfaces as you go and especially when you are done!


--tmac

 

Tim McCarthy, Principal Consultant

Proud Member of the #NetAppATeam

I Blog at TMACsRack

 

 

On Thu, May 25, 2017 at 5:59 PM, Mark Saunders <[hidden email]> wrote:

Our netapp clusters started life on 8.2.x and have now all been upgraded to 9.1, we have a lot of vlans set up in the Default broadcast domain which are flagged on the now site as something which should now be split out.

 

This looks to be a simple enough thing to do using “broadcast-domain split” but I cannot see anything in the docs to say if this is disruptive to any connected systems. While I have been able to split a couple of ports off on our sandpit where the lifs seemed to have no problems and didn’t drop a ping I just wanted to see if anyone can say if we might see any issues if a lif on the vlan ports being split ?

 

Regards

Mark

Data Centre Sysadmin Team

Managed Services

Phone:- 02476 694455 Ext 2567

The Sysadmin Team promoting PCMS Values ~Integrity~Respect~Commitment~ ~Continuous Improvement~

The information contained in this e-mail is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material.  If you are not the intended recipient of this e-mail, the use of this information or any disclosure, copying or distribution is prohibited and may be unlawful.  If you received this in error, please contact the sender and delete the material from any computer.  The views expressed in this e-mail may not necessarily be the views of the PCMS Group plc and should not be taken as authority to carry out any instruction contained.   The PCMS Group reserves the right to monitor and examine the content of all e-mails.

 

The PCMS Group plc is a company registered in England and Wales with company number 1459419 whose registered office is at PCMS House, Torwood Close, Westwood Business Park, Coventry CV4 8HX, United Kingdom. VAT No: GB 705338743

 


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