A few questions about our UC520

[William Paulsen]

We bought a used UC520 about 5 years ago and it's been 100% reliable - in fact it currently show it's been running non-stop for 49+ weeks. We have about 10 IP phone about about 40 various devices on the local network. I use CCA 2.2.5 and the software on the UC520 is 15.0

But - the DHCP server has never been about to resolve DNS requests, even though it's configured for 8.8.8.8. (So I've just always hard-coded the DNS on the various PCs, cameras, and misc wifi APs.)

The "ip dhcp pool data" from a "show run" does not report any "dns-server". Maybe that's a problem?

To try to fix that, in CCA I click to the Configure/Routing/DHCP Server menu, and then get the "modify" popup box.

But if I enter "8.8.8.8" in the DNS Server 1 box of the "modify" box, and then click OK, I get an error - "Invalid DHCP pool IP address range, default gateway IP 192.168.10.1 must be excluded..."

In the "Modify" popup menu box, can I change the "Network" box from "192.168.10.0" to "192.168.10.100" (which is where I'd like the dynamic IPs to start)?

The docs are not clear on exactly what the "Network" box setting does.

Or will changing that mess things up?  (All my static IPs are less than .100)

Also - Can I use the latest CCA software release (3.3) with my UC520?  (It's not on a maintenance contract so I can't update the UC520, but it seems the CCA is a free download)

Thanks.

[paul]

Hi Wiiliam,

This is the latest version, which i use on UC520.
Where can you find 3.3 ?

[William Paulsen]

Ok, I did not correctly read that the version is 3.2(3) - I saw three versions and I not think that the first version would be 3.0

But that really did not answer any question that I had - I did not ask what is the correct latest version of CCA.  Maybe that was a question that in another forum thread?

[impi]

Hi William,

how your DHCP looks like ?

You can alter it using cli, you are not bound to CCA (and after you go into CCA to see what it changes )!

It should be something like that :

# if you want to exclude one IP

ip dhcp excluded-address 192.168.3.1

# If you want to exclude several IP
ip dhcp excluded-address 192.168.3.12 192.168.3.100
!

ip dhcp pool MY_DHCP
   import all
   network 192.168.3.0 255.255.255.0
   default-router 192.168.3.254
   dns-server 194.2.0.20 194.2.0.50
   lease 1 12

About CCA, 15 is not acurate enought to know your exact version.

Do a "sh ver" under CLI and tell us the exact IOS version.

I never tried "new" CCA with "old" IOS but i guess it is less dangerous than the opposite!

HTH