Back in 2001, we moved to VoIP and bought a completely new Cisco infrastructure for our 3-story main campus.
At that time, the recommended design used a 6506 with a SUP1A-2GE engine. The 6506 also houses four 48-port POE modules. The other two floors of the building were populated with CAT3524XL's and the other two floors were tied to the SUP1A with Gb fiber.
All 300+ users at this campus are on the same data VLAN and the same phone VLAN.
We supply VoIP service to three remote campuses with the same call managers and Unity system via T1 lines. Those sites tie into our campus via 3640 or 1760 routers.
The original plan involved using a PIX 515 firewall pair to limit the vulnerability of the call managers and voice gateways.
The engineers never got the PIX to work for that purpose, so it was taken out of play.
We are now looking at moving around 60 users, the call managers, the Unity voicemail and some of our servers to a different location.
No matter what, we will need to purchase new switches.
My basic question:
Given the lack of complexity in our design, is there any advantage in moving the 6506 to the new location as opposed to buying a couple of 3750's with POE?
From what you've described, 3750s with POE would likely be fine. Just as you tie the current 3524XLs back to the 6506, it's likely you could do likewise with the 3750s.
The advantage of moving the 6506 would be avoiding the new switch purchase cost, but that's ofset by the hardware migration cost.
If you never plan to take advantage of the 3750 stacking capability, you might want to use 3560s instead since they're a little less expensive.
Since you also mention moving servers, you might want to insure the new switches can provide them gig Ethernet ports and might want to provide gig Ethernet channel between them and the 6506. (If you do Etherchannel, keep in mind you might want to channel across cards and 3750 stack members to avoid some single points of failures.)
Leo makes a good point about the better perfomance of the 3750-E. However, it's also often much more expensive. (Cisco did have a special pricing on 3750-E POE switches which was very attractive. Don't know what current pricing is.) You might consider obtaining any new switches with 10/100/1000 ports for similar reasons as Leo mentions. You can also mix a 3750-E into a 3750 stack, although you lose some of the performance advantages of a pure 3750-E stack.
BTW: a 3750 stack is of somewhat similar performance as a non-fabric 6500. An individual 3560/3750 offers somewhat better performance vs. a non-fabric 6500.
3750 is a stackable switch (up to nine switches per stack) and has a 32Gb backplane. The 3750-E is also a stackable switch (up to nine switches per stack) and has a 64 Gb backplane. While your Sup1A-2GE will only do 1Gb.
One of the things that you should consider about the 3750-E as compared to your current setup is that it can do Enhanced PoE (up to 20 watts per port) and can also support 10Gb Fiber Ethernet.
Being a medical establishment with alot of data running back and forth, it's really worth your RoI to invest in the new 3750-E series.
In the advent of Greenhouse Gas (GhG), EnergyWise will be supporting the 3750/3750-E family of switches.
In my humble opinion ...