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New Member

Setting management interface vWLC 7.6.100

Hello.

I have a problem setting Management interface IP. I get the error "Error in setting management interface IP. Conflict with another interface".

I have created 2 port groups, following the deployment guide.

http://www.cisco.com/en/US/products/ps12723/products_tech_note09186a0080bd2d04.shtml

I have cheked that the right port-group is associated with the correct Network adapter.

I am using  AIR-CTVM-7-6-100-0.

Does anyone faced this issue?

Thanks. 

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Accepted Solutions
Hall of Fame Super Gold

Setting management interface vWLC 7.6.100

I'm not familiar with the vWLC. 

But is your Service Port and your Management in the same IP Subnet? 

They shouldn't be.  Service port should have a non-routable IP address. 

9 REPLIES
Hall of Fame Super Gold

Setting management interface vWLC 7.6.100

Can you post the output to the command "sh interface summary" please?

New Member

Setting management interface vWLC 7.6.100

It's in the first startup, when I configure it from the console, so I am afraid that i can't post the output.

Hall of Fame Super Gold

Setting management interface vWLC 7.6.100

I'm not familiar with the vWLC. 

But is your Service Port and your Management in the same IP Subnet? 

They shouldn't be.  Service port should have a non-routable IP address. 

New Member

Setting management interface vWLC 7.6.100

Hello Leo.

I choosed Service-port as DHCP first, I think that was the mistake. When i choosed Static and assigned a none routeable IP (2.2.2.2) it worked.

Thanks.

Hall of Fame Super Gold

Setting management interface vWLC 7.6.100

Glad to see it works. 

And thanks for taking the time to rate our posts. 

Re: Setting management interface vWLC 7.6.100

If you have both interfaces in the same VLAN (even with different IPv4 networks) I have had issues with the vWLC. Access-points won't join the controller because the have the wrong MAC adres (from the service port and not from the management interface) in there ARP cache.

Is there someone else who has seen this issues? I have seen this in two deployments with 1600 AP's.

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Hall of Fame Super Gold

Setting management interface vWLC 7.6.100

If you have both interfaces in the same VLAN (even with different IPv4 networks) I have had issues with the vWLC.

Management Interface and Service Port IP addresses should NEVER BE in the same subnet.  This is the basic "foundation" to the WLC.  Service Port is exclusively used for Out of Bound Management (OoBM) and this is the main reason and it's functional design.  Management Interface, however, is the "network facing" IP address.  This is how you are able to manage the vWLC and how the APs talk to the vWLC (no more AP Management Interface). 

In our network, we use 10.0.0.0/8 so our Management IP address is one of the subnets of the 10.X.X.X/26 and a specific VLAN.  Our Service Port is also in another VLAN and has a 192.168.0.0/24 subnet.

Re: Setting management interface vWLC 7.6.100

I know that they should be on different IP subnets, but I guess what I'm trying to say is that you have to make sure that they are on different L2 networks aswell if your AP's are on the same VLAN. If not AP's won't join the controller because of the wrong ARP entry (I see in the arp table on the AP for the management IP the MAC adres from the service port)

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This "issue" has been fixed

This "issue" has been fixed in AirOS release 8.0, see for more information bug CSCuj14843!

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