[cisco-voip] Nortel LAN switches and Cisco IP Phones

[Voll, Scott]

For me, its more of a security issue then QoS on the LAN.  

 

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Craig M Staffin
Sent: Friday, January 19, 2007 10:01 AM
To: Tim Medley
Cc: cisco-voip-bounces at puck.nether.net; cisco-voip at puck-nether.net
Subject: Re: [cisco-voip] Nortel LAN switches and Cisco IP Phones

 


I know this is going to open a whole long discussion BUT 

Is having your phone traffic seperated really needed.  Is QOS on a LAN
really actually needed.  I mean come on we all have atleast gig uplinks
I want to see where the buffers on the switch get full enough to slow
down traffic over the 20ms jitter buffer on a local LAN segment or drop
packets. 

Now over the WAN thats somewhere that QOS definatly needs to be
involved. 

Just my thoughts 
Craig





Tim Medley <tim.medley at moxieent.com> 
Sent by: cisco-voip-bounces at puck.nether.net 

01/19/2007 11:21 AM 

To

"cisco-voip at puck-nether.net" <cisco-voip at puck.nether.net> 

cc

 

Subject

[cisco-voip] Nortel LAN switches and Cisco IP Phones

 

 

 




A customer just posed a question to me and I couldn't find anything on
google. 

Are there any interoperability issue with using Nortel LAN switches with
Cisco IP Phones. The CIO for this customer is looking to save some $ by
using non-cisco ip phones.  

My first thoughts were that the Cisco switch provides two things, power
and voice vlan support. The nortel switches do support 802.3af so power
should not be an issue. But since CDP is a cisco proprietary protocol,
the nortel switches won't support CDP which means that the phones will
not automatically use the voice vlan for voice traffic. This just means
that the customer would have to do something else to segregate and QoS
the voice traffic such as an acl. 

Are there any other considerations? 


tm 
  
Tim Medley 
Moxie Enterprises 
Email: tim.medley at moxieent.com <mailto:tim.medley at moxieent.com>  
Phone: (704) 905-4604 
  


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