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Contributor II

Change Netmask on controller

Hi,

I have a controller Aruba 650 Release 6.4.2.2.

I need to change the netmask of the controller on interface vlan 1 from 255.255.255.0 to 255.255.252.0.

When I try to do it, I obtain the following error:

"Error occurred while executing CLI command :interface vlan 1 ip address 192.168.0.239 255.255.252.0:Error:IP Address Matches the master ip"

 

 

On web user interface, I see that Master IP and loopback interface are the same, so I assigned to the loopback interface an ip address on vlan 150. 

But still I get the same error, when I try to change the netmask of vlan 1.

Any idea of why I'm getting this error?

Thanks

Kind regards.

Re: Change Netmask on controller

Is this a standalone controller or in Master-Local deployment? Check this with the below using the CLI

#show roleinfo

 


ACMA, ACMP, ACSA, ACDX #985
If my post addresses your query, give kudos:)
Contributor II

Re: Change Netmask on controller

It's a standalone controller.

 

#show roleinfo

switchrole:master

Guru Elite

Re: Change Netmask on controller

The loopback is not really necessary.  Try to remove the loopback ip address (it might ask you to reboot) and try again.

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Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.
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Contributor II

Re: Change Netmask on controller

I moved the loopback interface in another network and it doesn't work.

 

I found this string in the running configuration:

"controller-ip vlan 1"

 

Could it be the reason because I can't change the netmask of vlan 1?

 

 

 

Re: Change Netmask on controller

Have you rebooted the controller since you changed the controller vlan? The below will tell you if you have any outstanding configuration. 

 

 #show configuration diff

There's a good chance you have made changes which require a reboot but since the reboot hasn't occurred these changes have not been implemented yet.


ACMA, ACMP, ACSA, ACDX #985
If my post addresses your query, give kudos:)
Guru Elite

Re: Change Netmask on controller


@Michele wrote:

I moved the loopback interface in another network and it doesn't work.

 

I found this string in the running configuration:

"controller-ip vlan 1"

 

Could it be the reason because I can't change the netmask of vlan 1?

 

 

 


To be clear, setting a loopback interface allows you to state what ip address and VLAN will be the controller's ip address.  Unfortunately setting a loopback interface consumes a second ip address on a VLAN that already has an ip address.  Setting a loopback is an old way of setting the controller's ip address.   "Controller-ip vlan xxx" should be used instead, because it does not consume an ip address.  Controller-ip vlan xxx conflicts with a loopback and only one should be used.  Changing the controller's ip address or vlan typically requires a reboot, because that is the official ip address that it uses to communicate with access points and external systems.

 

Long story short, just use controller-ip vlan xxx and remove the loopback (will probably require a reboot).

******************
Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.
******************
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