[cisco-voip] GiGE phones -what for?!?

[Wes Sisk]

I've seen several instances where *nix workstations and servers were  
deployed behind IP Phones that could overrun the buffers of the 40/60  
phones.  Even those cannot communicate at line rate.  Do some testing  
with SmartBits or Ixia if you get a chance.

CAD/Microstation environments and *nix boxes using large UDP NFS  
transfers are the only real world scenarios I have encountered so far.

/Wes

On Aug 1, 2006, at 11:04 PM, Netfortius wrote:

Thanks to all who responded with suggestions - I will try to address the
issues from my perspective:
- if the workstations "behind" the phones would need GiGE, then  
something "at
the other end" may require such, as well. In an office environment,  
though,
at the other end is either a server (file shares), or a connection to a
remote site. The former, then, would require itself at least a 10 GiGE
connection to be able to support those workstations, which is not  
available,
and - based on regular office applications - it is hard to believe  
that they,
themselves would be able to push this much on the wire (I liked/ 
appreciated
the idea of medical imaging, but this is not our case). The latter would
obviously find its limitations in the bandwidth available inter- 
sites, so
that is not an argument, either;

- video for the phones: this is not the type of phones they are  
getting, to
begin with. Under the assumption of future (not near) deployment of
video-based ones, I would expect a drop in price for the modules, and  
the
only restriction in such a case between the 4500s we were suggesting,  
and the
6500's  they would like becoming the backplane capacity (96 Gbps now for
4500's vs. 720 Gbps for the 6500's). In this [unlikely] scenario I would
expect higher capacity backplanes being made available for the  
4500's, by the
time of "must have video on every phone in the office".

To simplify my original question: does anybody have real life  
examples of GiGE
deployment for office environments, with GiGE-based phones?

Thanks again,
Stefan

On Tuesday 01 August 2006 20:13, Rob Gault wrote:
> What about the switch port in the phone, are you connecting pc's to  
> the
> them?  If so then are there requirements for GigE for desktop apps;
> which would require the phones to be GigE capable wouldn't it?
>
> Rob
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Dixon, Wayne
> Sent: Tuesday, August 01, 2006 9:00 PM
> To: netfortius at gmail.com; cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] GiGE phones -what for?!?
>
> The only thing I could think of that MIGHT require GigE would be
> video... If you were going to do that... Otherwise I would think it
> might be overkill.
>
> Wayne
>
>
>
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Netfortius
> Sent: Tuesday, August 01, 2006 7:57 PM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] GiGE phones -what for?!?
>
>
> Hi, everyone,
>
> I have had a strange request from a subsidiary of ours, in regards  
> to a
> new
> VoIP network design, in an office environment with 100-150 users, in
> regards
> to supporting GiGE to the all the end points, and high end 6500's  
> at the
>
> core, w/720 SUP's. The Cisco reps were asking for that presumably
> because of
> need to support GiGE phones. And here is my question: what would  
> you use
>
> Cisco GiGE phones for (what application on the phone would be able to
> push
> and require such port speeds)?!?
>
> As as a side note: our original design provided 4500's and 10/100
> modules to
> the end points, except for a module with GiGE for file servers
> connectivity.
> Of course the pricing of the former is triple compared to the latter,
> but I
> would like to find out some technical aspects related to justifying  
> the
> first
> option, before even bringing up the cost issue.
>
> Thanks,
> Stefan
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