VOIP network config question

VOIP network config question

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Subject Author Date
VOIP network config question Kevin_S 04-24-2007
Posted by Kevin_S on April 24, 2007, 12:27 pm
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I am getting ready to implement a VOIP system in our organization. I
have a couple basic issues that I'm not sure I'm understanding
properly.

I currently have a basic 10.0.0.0 network. I have 5 sattelite areas
(10.0.x.0) routed back to my main network.

I am trying to decide whether to put the IP phones on a seperate
subnet from my existing devices here. I am implementing layer 3 PoE
switches. I'm assuming the advantages are that all the voice traffic
would be on a seperate subnet, and the basic disadvantage would be
added complexity in programming/routing my other phone systems.

Phones & PC's would then have sperate connections in each office.
Phones go to the PoE switch & subnet, PC's would go back to my other
swtich. If I go this route, some of my switches in outer buildings
here would have to have devices from two different subnets plugged
into the same switch. WIth layer 3 switches I assume this is OK. Any
reasons I may not want to or be able to do this.

Is it worth it to seperate these?


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Posted by Someone on April 24, 2007, 6:35 pm
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How about VLANs?
>I am getting ready to implement a VOIP system in our organization. I
> have a couple basic issues that I'm not sure I'm understanding
> properly.
>
> I currently have a basic 10.0.0.0 network. I have 5 sattelite areas
> (10.0.x.0) routed back to my main network.
>
> I am trying to decide whether to put the IP phones on a seperate
> subnet from my existing devices here. I am implementing layer 3 PoE
> switches. I'm assuming the advantages are that all the voice traffic
> would be on a seperate subnet, and the basic disadvantage would be
> added complexity in programming/routing my other phone systems.
>
> Phones & PC's would then have sperate connections in each office.
> Phones go to the PoE switch & subnet, PC's would go back to my other
> swtich. If I go this route, some of my switches in outer buildings
> here would have to have devices from two different subnets plugged
> into the same switch. WIth layer 3 switches I assume this is OK. Any
> reasons I may not want to or be able to do this.
>
> Is it worth it to seperate these?
>



Posted by bvlmv on April 26, 2007, 8:05 am
If you were  Registered and logged in, you could reply and use other advanced thread options
>
>
>
>
> >I am getting ready to implement a VOIP system in our organization. I
> > have a couple basic issues that I'm not sure I'm understanding
> > properly.
>
> > I currently have a basic 10.0.0.0 network. I have 5 sattelite areas
> > (10.0.x.0) routed back to my main network.
>
> > I am trying to decide whether to put the IP phones on a seperate
> > subnet from my existing devices here. I am implementing layer 3 PoE
> > switches. I'm assuming the advantages are that all the voice traffic
> > would be on a seperate subnet, and the basic disadvantage would be
> > added complexity in programming/routing my other phone systems.
>
> > Phones & PC's would then have sperate connections in each office.
> > Phones go to the PoE switch & subnet, PC's would go back to my other
> > swtich. If I go this route, some of my switches in outer buildings
> > here would have to have devices from two different subnets plugged
> > into the same switch. WIth layer 3 switches I assume this is OK. Any
> > reasons I may not want to or be able to do this.
>
> > Is it worth it to seperate these?- Hide quoted text -
>
> - Show quoted text -

Yep, good old VLANs would do the trick. Keep in mind most IP Phones
have an extra Ethernet port so you wouldn't need a separate drop for
the PC's


Posted by Kevin_S on April 26, 2007, 1:30 pm
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Yeah, I did some reading on vlans. Is there any advantage to running a
seperate subnet vs. using vlans?

Our phones will have two ethernet ports, but I guess in the interest
of sompletely seperating the traffic, I was planning to use dual
cables and seperate subnets (or vlans).


Posted by bvlmv on April 27, 2007, 8:55 am
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> Yeah, I did some reading on vlans. Is there any advantage to running a
> seperate subnet vs. using vlans?
>
> Our phones will have two ethernet ports, but I guess in the interest
> of sompletely seperating the traffic, I was planning to use dual
> cables and seperate subnets (or vlans).

Well by using vlans you are essentially running two separate subnets.


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