Wednesday, January 24, 2007 - 09:34 am, by: Justin Cook(Justin)
Is anybody out there a LAN/WAN designer or knows a crapload about this that can help me out?
I have to build a network for my workplace. I want it to consist of two VLAN's, one is for the VoIP system (100Mbit) devices, and the second is between computers and other devices (computers at 1Gbit, including servers) and some computers 100Mbit. I know the speeds are irrelevant.
I just want the Phones (all 100Mbit) seperated from the computers but still able to be routed to the computers as the phones have software that run on the PC's.
I was going to make the gigabit lan 192.168.0/24 and the phones 192.168.1/24.
Do I need two routers? One for internet in/out and one between the two networks.
Wednesday, January 24, 2007 - 10:36 am, by: Kim Nguyen(Kim)
you could use a managed switch for having the two VLANs and a router for routing of the traffic between the two. Just make sure that you set the VoIP packet priorities higher than traffic otherwise you could experience some lag.
Hope that helps at all.
Gregg Holden Trader WA Soarer GT-TL & Supercharged 31
Wednesday, January 24, 2007 - 01:09 pm, by: Gregg Holden(Xzotic)
My technical days are long over (more in the service management consulting space now) however I would have thought that with appropriate bandwidth/load balancing/Quality of Service management you should be able to run both VOIP and your data IP over the one network.
You would need a router that has the appropriate management functionality - Check out the Cisco 2800 series which is an integrated router that natively supports data, security, voice, video and wireless. It was designed for small to large offices (but I'm unsure of the price point). It has inbuilt management to assure QoS on the IP phones although it does mention Cisco IP phones specifically. I'm unsure if they are compatible with other brands.
Still the above solution would be an all in one answer including security/firewall protection through to the internet. Alternatively you could have another dedicated router with inbuilt firewall protecting the integrated services router depending upon your security concerns/policies...
Wednesday, January 24, 2007 - 01:33 pm, by: Justin Cook(Justin)
Thanks Guys, I know all that stuff. I have done a lot of reading. The only thing missing is you don't get to play with the hardware you have to buy, therefore you don't know exactly what they do.
I think I will keep them all the same subnet and just make it larger. Can always set up VLANs later.
Thursday, January 25, 2007 - 09:28 am, by: Callum Finch(Sigeneat)
Gonna be using power over ethernet? Grab one of them swank 48port 100mbit POE ciscos with 1gbit gbic modules.
All you would need to do then is create the two seperate VLANS according to what ports are in use on the switch.
Then the only task left to do is make sure your IP phone server is pointing to the correct subnet for the phones.
From memory the NEC and Cisco IP phone manager units usually have 2 or more seperate LAN adapters, so you can route all your inter-vlan traffic through the IP phone server device thingo and have it act as a gateway internally between ip phone and PC.
Other than being able to use different subnets for the phone/computers, is there a specific reason you want them on seperate vlans?
Typically (among other reasons) ip phones are put on seperate vlans in corporate setups because there are too many of them to properly manage which can lead to security.. problems. If you still want to be able to have the phones talk to the computers then just run them on a different subnet?
...unless you want it all routed through a firewall >.>
Thursday, January 25, 2007 - 03:57 pm, by: Justin Cook(Justin)
Yes I guess that's my point so many damn options, at first I am going to put them all on the same subnet. Then just one integrated firewall/router for protection. Then two 24 port gigabit switches to connect all the devices to.
Friday, January 26, 2007 - 12:36 am, by: Callum Finch(Sigeneat)
It would be less of a hassle if you can separate the two networks via different switches like that and just run a firewall on interfaces to both networks.
HP and Cisco switches arent the easiest to setup a VLAN on, and i wouldnt wanna run a VLAN on any other switch brand.
Friday, January 26, 2007 - 03:38 am, by: Richard Tan(Ric)
VLAN configurations are not that hard these days with the GUI interfaces being much better than what is was a few years back. I havnt touched a Cisco switch for sometime now but if you want to get your hands "dirty" on Cisco gear to practice there are simulators out there that pretty much replicate the real physical hardware with all the CLI commands and all... quite good actually. FOr people who go for their CCNA/P cert.
Previous
