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August 18th, 2010 15:00

Change IP's on CIFS server

I have a Celerra NS500.   We have a CIFS server setup that is the share name for all users who map drives for our windows AD environment.   I need to change the IP address as we are migrating from a Class C ip scheme to a Class B scheme and totally changing our environment.   I have been able to change the IP on the control station. 

Short of deleting the CIFS server, removing it from AD, replicating then recreating the new interface on the control station and recreating the CIFS server name, is there an easier way?

2 Intern

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8.6K Posts

August 18th, 2010 17:00

please search the forum for interface stealing (just add your new interface and then remove the old)

Rainer

August 18th, 2010 23:00

Using GUI,Create a new interface.

Go to CIFS, CIFS server properties by right clicking the CIFS server.Uncheck the old IP and select the new IP.

296 Posts

August 19th, 2010 06:00

Naveen,

For Safer side I think We can first assign the new IP, later we can uncheck the old one. I think this would give time to update new IP in the DNS records.

Correct me if I am wrong.

Sameer Kulkarni

2 Intern

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20.4K Posts

August 19th, 2010 06:00

this is what Rainer was referring to

https://community.emc.com/message/386412

August 19th, 2010 06:00

The option to select another IP is not available in the GUI.   I have tried that before posting.  I even tried logged in as root.  You can only select a different IP during the creation process.

I have tried creating another interface already, and tried creating another CIFS server to be used as a test.  It is pingable, but not browsable.  It worries me to delete the current CIFS server and having to re-assign it if I cannot browse the device after its assigned.

2 Intern

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8.6K Posts

August 19th, 2010 06:00

did that change recently?

so far with the Celerra Manager and server_cifs versions I have tried you couldn't directly remove an interface from a CIFS server ?

that's why I have recommended to go the stealing route

If you have a Celerra where this works please post the DART version and a screenshot.

Rainer

1.5K Posts

August 19th, 2010 07:00

Please ignore that statement as that's not a general practice to change IP Address or name, as That's an option to the EMC support personnel only and can be used as a last resort.

2 Intern

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8.6K Posts

August 19th, 2010 07:00

Rainer wrote:

did that change recently?

so far with the Celerra Manager and server_cifs versions I have tried you couldn't directly remove an interface from a CIFS server ?

that's why I have recommended to go the stealing route

If you have a Celerra where this works please post the DART version and a screenshot.

Rainer

looks like this has finally changed in a recent NAS code and I couldnt see it documented

On my lab machine with 5.6.48 you can also remove an interface from a CIFS server by just un-selecting it in the properties of the CIFS server.

Rainer

August 19th, 2010 07:00

I am using Software Version 5.5.41.1  This was just upgraded the end of July right before our maintenance contract with EMC expired.  We now are out of maintenance.

The CIFS server shows the interface it is setup on, but does not allow to change that interface

cifs.jpg

2 Intern

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20.4K Posts

August 19th, 2010 07:00

manaswini wrote:

Hello,

Another way to change the IP address or netmask is to change the ifconfig file in the slot of Data Mover. Make a copy of the /nas/server/slot_x/ifconfig file, edit the ifconfig file, change the line to either ipaddress or netmask, close and save, and then reboot the Data Mover for change to take effect.

reboot the datamover, you must be joking.

2 Intern

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8.6K Posts

August 19th, 2010 07:00

ITManager wrote:

The option to select another IP is not available in the GUI.   I have tried that before posting.  I even tried logged in as root.  You can only select a different IP during the creation process.

I have tried creating another interface already, and tried creating another CIFS server to be used as a test.  It is pingable, but not browsable.  It worries me to delete the current CIFS server and having to re-assign it if I cannot browse the device after its assigned.

what DART version do you have installed ?

If its 5.6 you can do it directly in the GUI

Enhancements to existing features

Celerra Manager Modifying CIFS server properties

The CIFS server properties NetBIOS alias, NetBIOS name, and the

Interface list are modifiable. The NetBIOS alias and NetBIOS name on

the CIFS server properties page now appear in the Celerra Manager

as modifiable text boxes.

New features and changes

The Interfaces field appears with modifiable checkboxes that list all

the non-default interfaces. User can select/clear interfaces from the

available list of interfaces. NetBIOS name, NetBIOS alias, and

Interface list can also be modified via the CLI.

If you are still on 5.5 do the following:

1) create a new interface

2) add the new interface to the existing CIFS server through either GUI or server_cifs

3) create a new CIFS server (doesnt have work - standalone is fine) and specify the existing "old" interface to be used

4) delete that temp. new CIFS server

this way the temp CIFS server will "steal" the interface from the existing one - effectively removing it.

Important is that you add the new interface before - you cant "steal" the last remaining interface from a CIFS server

Rainer

1.5K Posts

August 19th, 2010 08:00

I just tested it on an old box running 5.5. code. And I also experienced that the new unused Interface is not listed in the GUI on the CIFS server property page.

But I was able to it using the Command line - using server_cifs command I associated the new IP Address to the existing CIFS server - use the following command -

server_cifs server_x -add compname=CIFS_Server,domain=Domain_Name,interface=Test

Earlier I created a new Interface (IP Address) named Test - which I associated with the existing CIFS server - you may use the Interface IP Address in place of Interface Name.

Alsthough it is server_cifs add command - but it actually does not create the CIFS server rather add the option used with the existing CIFS server.

After this, you 'll see that the existing CIFS server has two IP Addresses associated to it - use server_cifs server_x command or check it from GUI.

Now - you in GUI -you create a dummy CIFS server and select the old IP Address to use with this dummy CIFS server - so that the old IP address is now removed from your existing CIFS server.

Then you can delete the dummy CIFS server and then delete the old Interface.

Hope this helps,
Sandip

25 Posts

August 22nd, 2010 17:00

It appears that your question about changing IP address used by the interface of an existing CIFS server has been answered.

Are those answers or comments helpful? If so, please mark the disucussion as "Answered". Your response is appreciated.

Thanks!

August 23rd, 2010 19:00

The proper solution that worked for my case was:

Create the new interface for the new IP

Delete CIFS server

Recreate the CIFS server and assign it to the new IP

That is all it took in this case since I do not have the gui that will allow me to reassign the IP interface on a CIFS server.

Thank you all for your assistance

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