[cisco-voip] Network Change Recommendations

[TechGuy]

We have some engineers in helping with a new callmanager and IPCC
implementation at a secondary company of ours.

They have made some recommendations on some network changes and I wanted to
ask others about the changes and what you think would be the pro's and con's
of doing so and why do you think they are suggesting these changes.

1.  Move the inter-VLAN routing to the switches.  (This office has a maxed
out 3845 acting as the core router and voice gateway, it currently does all
routing)

2.  Seperate VLANs for servers, pc's, callmanagers, phones  (Currently we
have one vlan for servers and pc's, and one VLAN for callmanagers and
phones)

3.  Remove class B addressing and utilize Class C addressing (The internal
network was originally configured with Class B addressing throughout)

Thats the bigger changes that I really just want to understand the various
pro's for why they would recommend them.  They make sense and I don't
question that these are not best practices but I want to really understand
why the changes to sell it to management.  Their philosophy is "if its not
broke dont fix it" and feel that the network has been working fine so why
all the changes.

Thanks for your time!
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