UC540 DNS entry in DHCP settings when static IP on internet connection

[LorenzNeher]

Hi I have a probem to configure my UC 540 in order to provide WLAN-Clients and Clients in the data VLAN access to the internet

Here my Problem:

1. If I use in Configure/Routing/Internet Connection the WAN Interface Type "DHCP" the internal DHCP distributes DNS to all clients
   
2. If I use in Configure/Routing/Internet Connection the WAN Interface Type "Static IP" and enter the IP and default GW and DNS manually, the settings are not used in the internal DHCP for the clients
   
3. Since it is not used automatically I tried to configure it manually in the DHCP settings Configure/Routing/DHCP Server settings
   
   
4. As soon as I try to modify something, such as the DNS etc. I revieve the error Message
   
   
   Thats wired since I did not change the default gateway and the address is exluded in the DHCP exlusions list
   
   
   

As a result I can only use dynamic IP address with NAT enabled (Configure/Security/NAT)

For all other settings, the clients are not able to access the internet, since no DNS is set in the DHCP.

I have the newest version 8.6 and use the actual CCA 3.2(1)

Any suggestions how I can use static IP and no NAT instead of DHCP and NAT?

I have the following setup:

Internet ------ Firewall------(Pivat IP Range)---UC540------WLAN + DATA clients

Thanks for a suggestion

Lorenz

[jurodri3]

Hello Mr. Neher,

Thank you for your question.

In order to provide you an accurate and quick answer please try on the correct section of the forum for this devices "small business - Voice",  You can move your post using the Actions Panel on the right.

Best regards

Diego Rodriguez

Cisco network engineer

[cindy toy]

Hi Lorenz,

I moved your post into the correct area.

Regards,
Cindy Toy
Cisco Small Business Community Manager
for Cisco Small Business Products
www.cisco.com/go/smallbizsupport
twitter: CiscoSBsupport

[Ivan Polchenko]

Hi,

I have the same issue.

UC540-fxo, with latest 8.6.2 firmware, cca 3.2.2.

sg300-28p

I have the internet settings set as static.

I can ping 8.8.8.8 all fine.

But DNS info is not getting passed through DHCP.
And when I try to edit this DHCP pool information, I get this exact same error.

If I set dns servers manually in the network settings of the desktop, I do have "internet access".
Just spent last 2 hours trying to figure out what the problem is.

Will look at startup-config on sunday, will let you know if I get anywhere.