Setup of UC320W behind SA520

[ambleside]

Had a frustrating day yesterday trying to bring up an UC320W.  I can't be the only person this has happened to.

SA520 has default VLAN's and subnets already set-up - VLAN 1 = 192.168.10.X, VLAN 100 = 10.1.1.X (SBCS 2.0 standard)

I want to put the UC320W in back of the SA520.

I'm sure if I think about it long enough I'll figure out what I'm doing stupidly but I seem to be in a little catch-22:

Even when I set it to configure over WAN port, the presence of the 192.168.10.X address on the WAN side makes the unit inaccessible.

If I set-it up standlone, I can't get past the topology screen since there is no external DHCP server. 

If I leave it as the DHCP server, I can't hook it to the WAN (2 DHCP servers.)

Does anyone have a documented process for dealing with this?

I can hook up the UC320W directly to a router port or through an ESW switch.  I'd rather hook up the phones to the switches not through the UC320W.

[juliomar · Accepted solution]

Hi ambleside,

We have a document dealing with your scenario.  We term it Grayfield configuration.  What it boils down to is that you need to create a separate VLAN on your SA520 to connect the WAN interface of the UC320W to.  You can get the document here (requires Partner login):

http://tools.cisco.com/s2slv2/ViewDocument?docName=EXT-AS-370391

More documentation is available here:

https://supportforums.cisco.com/docs/DOC-14783

Hope this helps,

Julio

[ambleside]

Perfect!  This should be issued to every partner who gets a demo UC320 unit! Had I known it existing, I'd have 3 (billable) hours of my life back....

-Aaron

[focusonit]

Hi,

I'm trying to access this document however my login fails - am a Cisco Partner.

http://tools.cisco.com/s2slv2/ViewDocument?docName=EXT-AS-370391

Does any one have a document that describes adding a UC320 to an existing network with SBS server and a Mediatrix 4404 ISDN gateway?