[cisco-voip] Proper VLANS and IPs

[Joe Cisco]

If a client says that there is even a remote chance that they may
someday physically move their voice servers to another campus or
building (across a WAN link), we'll put the servers in their own
"voice server" vlan separate from the phones, so that if they
physically move the servers, we simply move the whole voice server
subnet rather than going thru the hassle of re-addressing the servers
with new IPs.

-Joe C.

On Tue, Sep 30, 2008 at 7:47 AM, Jay Prailun <j23paul at gmail.com> wrote:
> I have inherited this project from a project manager who just left with no
> warning.  I always noticed he and I did things a bit differently, but this
> one has me stumped.
>
> 4 buildings, linked by fiber.  CCM 6.1 and Unity.  2801s for SRST and 911 in
> each building.  10-15 phones per building, so total of 60 (actual total
> shows 52).
>
> He has CCM and Unity in VLAN 7 in the .7 subnet.
> Phones are in VLAN 6 and in the .6 subnet.
>
> Doesn't this mean that for each packet in the voice stream, we will have to
> traverse the router to get to the diff subnet?  Is this common to do it this
> way, leaving CCM and Unity in their own subnet and VLAN?  If the main router
> were to have an issue, all phone traffic would die, it seems.
>
> Data is in VLAN 1 in the .1 subnet.
>
> Depending on who I get in TAC, this is either fine,or troubling, since
> Cisco's  mgt traffic uses VLAN1.  But with only about 50 users, so figure 50
> PCs, would this be an issue running the data on VLAN1?
>
> Your thoughts?
>
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