[asterisk-users] Re: Recommendations for QoS, PoE Switches

[Pavel Jezek]

CDP has nothing to do with inline power, it is L2 proprietary protocol 
for negotiation of voice vlan between phone and switch,
so you don't need to set what vlan number phone should use for voice and 
what is for connected pc data.
if you disable cdp on switch, phone will still working, except you 
should set voice vlan manually through phone menu.
PJ


William McCloskey wrote:
> Layer 2 switches support all the basic switching functionality. QoS,
> SNMP, POE, VLANs, Etc... depending on the model and features. Layer 3
> switches are essentialy basic routers with a switch built in.
>
> One thing about Cisco CDP and a lot of POE switches is you can get CDP
> support with a custom Ethernet cable, just swap pins 4-5 with 7-8 (This
> is how I'm running Cisco 7940G's with a Dell POE Switch).
>
> ---------------------------------
>  William J McCloskey
>
>  Information Technology Manager 
>  williamm at timbercon.com
>  503-827-8141
>  503-228-6747 fax
>  www.timbercon.com
> ---------------------------------
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Cory
> Andrews
> Sent: Monday, December 11, 2006 7:32 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: RE: [asterisk-users] Re: Recommendations for QoS, PoE Switches
>
>  Edgewater Networks markets a 24 port switch, with PoE (both Cisco CDP
> and 802.3af supported), and Layer 2/3 management features that retails
> for less than $1500.  The model is EC-2402POE-01
>
>
> Cory Andrews
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Patrick
> May
> Sent: Monday, December 11, 2006 10:22 AM
> To: asterisk-users at lists.digium.com
> Subject: Re: [asterisk-users] Re: Recommendations for QoS, PoE Switches
>
> On Mon, Dec 11, 2006 at 09:53:53AM -0500, Zeeshan Zakaria wrote:
>   
>> What's the price for these HP switches?
>>
>> And also I someone can give me a link to some document where I can 
>> read about Layer 2 and Layer 3, how they help in VoIP traffic, it'll
>>     
> be helpful.
>
>   
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>
> CDW's retail price was about $7,000.
>
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