[cisco-voip] CCM 7.x test system??

[Beck, Andre]

Hi Edward,

On Wed, Apr 25, 2012 at 12:02:21PM -0500, Countryman, Edward wrote:
> I???ve trying to build a test system for a 7.1.3 environment on VM ware.  
> 
> The test environment is stand alone, no production or internet access, just a small lab we can use for testing and training.  
> 
> When trying to load CCM on the first server, it stalls wanting a NTP server.
> I build a small win2003 server on the same test network and enabled win32 time services but CCM doesn???t like it.
> 
> Any ideas what I might be missing?  

Recent MS server OSes seem to be decent NTP servers at least when running
as an AD domain controller. That being said, I wouldn't know why I would
go the hassle of using Windows for that purpose. When building isolated
networks to stage a CUCM installation (on hardware or VM), I usually drop
a VM I call "infra" to emulate all aspects of the target environment in
a sufficiently correct way. That means it's usually having the default
gateway address in the network, runs a DNS server, NTP server, DHCP server
and whatnot. It also binds those servers to the addresses they are really
expected to run on, so the CCM installation can be built with everything
correctly configured from the get-go. For this VM I use Linux (Debian in
my case), as everything that may be needed is easily found there and
hacking the networking to emulate infrastructure is easier than ever.
It also allows you to run the SFTP server needed for DRF and upgrades,
again bound to the expected address/name if you want.

Running an isolated NTP server is a bit of a problem though, as a properly
configured NTP server will by default stay on stratum 16 when not externally
synced - so it isn't of any use to clients. You will either have to provide
a gateway machine to the outside (no router, I use another Linux VM with
all the necessary proxies including another ntpd, but with forwarding disabled
as strictly as possible), or to run the NTP server only synced to its own
local clock. For the latter, with ntpd, you need something like that in
ntp.conf:

server 127.127.1.1
fudge 127.127.1.1 stratum 5

HTH,
Andre.
-- 
                    Cool .signatures are so 90s...

-> Andre Beck    +++ ABP-RIPE +++      IBH IT-Service GmbH, Dresden <-