Re: CISCO Supervisor question
- From: "Thrill5" <nospam@xxxxxxxxxxxxx>
- Date: Sun, 1 Feb 2009 17:40:13 -0500
"mdda123" <martin.andrews@xxxxxxxxx> wrote in message
news:c75d2eb9-6662-4ecc-a0c8-0f9ed1ad038b@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Please forgive me for asking such an elementary question...
I've decided to implement VoIP within a small business I support
computer-wise. It will grow from 20 to maybe 40 users over the next
18 months.
At the moment, the computers all connect with a mix of hubs/switches
to 3 servers, and the outside world through a Fortigate 100A router.
But the situation is a mess, particularly since I want to do POE to
the (CISCO) phones to simplify wiring.
Naturally, I've found that ebay is my friend here, and I've acquired a
C4003 and 2 WS-X4148-RJ45V modules inexpensively.
My question(s) :
First off : Am I attempting to do something really silly ?
If all I want is (efficient) passing of packets around 1 subnet on
devices plugged into the switches - do I need a supervisor module
(like an X4013) ? (I'm guessing the answer might be different if
there were only one X4148 - is that true?)
Does the answer change if I want to plug a (POE) phone and daisy-chain
a PC connection (out of the back of the phone) into each port ?
( 4148->Phone->PC )
Finally : would having 2 subnets (1 for the phones, the other for the
computers) make sense - or is that in the 'why bother' category?
Again, I apologize for asking such basic questions - but if I can
avoid getting into setting up a supervisor module, then so much the
better.
Thanks - Martin :-)
I hope you didn't pay too much for the 4000, that was not a very good
choice. It is both EoS and EoL. A 4K chassis requires a supervisor to
work. For future reference, eBay IS NOT YOUR FRIEND when buying used Cisco
equipment. First, there is no guarantee that it will work, second you can't
return it, third, if it breaks in a month you're screwed, and fourth, you
are risking your company getting sued because you need a software license
from Cisco to use it. Software licenses are NOT transferrable. Buy from a
reputable used Cisco vendor, which will include the software licenses you
need, the product will have a warranty, you can return it (or get a credit)
if you find out you ordered the wrong part, and most importantly they will
give you ADVICE as to what you should purchase based upon your requirements.
The reason crap like this is sold on eBay is because it is crap! Great if
you need something really cheap to use at home, but it's not appropriate to
use in a business IMHO.
You do want to have separate VLANs for both voice and data and is a best
practice. This is a very simple configuration when using Cisco switches
and Cisco phones. You can use the PC port on the phone for your PC's (which
are in the data vlan), and the phone will be in the voice vlan.
If you want the least expensive solution, I would go with 24 Port 2960 PoE
switches (currently Cisco does not offer a 48-port PoE version of the 2960
but rumor has it, it is coming soon.) The 2960 doesn't do L3, but since you
have a small network you can do the routing with a 2811 which can also act
as your PSTN or SIP gateway if you are doing VoIP with your carrier. If you
want to spend a little more, you can go with a 48-port 3560, but this does
L3 which you really don't need on such a small network, and is about 2 1/2
times the cost of two 2960's.
.
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