From: Clark, John (John.Clark@expanets.com)
Date: Fri Sep 05 2003 - 18:26:03 GMT-3
All I have been doing for the past couple of months is Call Manager/Unity
installs with IP Phones. I handle the network side of it mostly (preping the
routers and switches -- although recently I got assigned to a project doing
the Call Manager and Unity as well as the network -- it should prove fun!!)
The way I have always configured the ports was:
int fax/x
switchport mode trunk
switchport trunk native vlan X
switchport access vlan X
switchport voice vlan X
spanning-tree portfast
!
Although I Like the previous configuration better - it seems more clean. I
am going to try that out in Expanets demo lab and see if it works -- if so
it is going to become my new configuration. -- Also what QoS policies is
everyone implementing for multi-site ip phone rollouts with the CallManager
in a central location and low bandwidth at the remote sites?
Thanks,
Brian Clark CCA, MCSA, MCSE, CCNP
Senior Network Engineer
Expanets
-----Original Message-----
From: McClure, Allen
To: Group Study
Sent: 9/5/03 3:04 PM
Subject: RE: 3550 and IP Phone Verification
In real life I like the ideas, but in the lab it's risky to rely on
auto/cdp anything.
Great information Barry. I'm keeping your email because I have to do
this for real before long and I like your answer better than the one I
might use in the lab.
Allen G. McClure
CCNP/CCDP/MCSE
Yum! Brands, Inc.
Sr. Network Analyst
allen.mcclure@yum.com
-----Original Message-----
From: Barry Bocaner [mailto:barry@bocaner.net]
Sent: Friday, September 05, 2003 3:15 PM
To: Group Study; McClure, Allen
Subject: RE: 3550 and IP Phone Verification
For 3550 and 2950EI as well as 6500/4500 you should not configure a
trunk, the switch will see the phone via CDP and your voice vlan
configuration and automatically trunk even if you've set the port to
access mode. For XL switches and standard 2950 you'll need to manually
configure a trunk.
Here's my 3550 IP telephone config:
int fa0/1
switch access vlan 10
switch mode access
switch voice vlan 100
mls qos trust device cisco-phone
mls qos trust cos
mls qos monitor dscp 0 26 46
spann portf
priority-queue out
wrr-queue...
bla bla bla
By configuring it as an access port rather than a trunk you set it up so
that ONLY a cisco phone that has announced itself via CDP can create a
trunk and/or mark their own CoS values. More secure.
On Fri, 5 Sep 2003, McClure, Allen wrote:
> For 802.1q phones, this should be the appropriate configuration. In
> my interface FastEthernet0/13 description phone and PC
> switchport mode trunk
> switchport trunk encapsulation dot1q
> switchport voice vlan 110
> switchport trunk native vlan 10
> I've been wrestling with this for a while myself and this is my
> current solution. Any feedback is appreciated. Certainly would love
> to be corrected if I'm wrong.
-- --=-=-=-=-=-=-=-=-=-=-=- Barry J. Bocaner barry@bocaner.net http://web.bocaner.net -=-=-=-=-=-=-=-=-=-=-=-=This communication is confidential and may be legally privileged. If you are not the intended recipient, (i) please do not read or disclose to others, (ii) please notify the sender by reply mail, and (iii) please delete this communication from your system. Failure to follow this process may be unlawful. Thank you for your cooperation.
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