?
Solved

Configure Cisco Cataltyst Express For DHCP on Cisco-Voice VLAN

Posted on 2009-05-06
4
Medium Priority
?
695 Views
Last Modified: 2012-05-06
I have a new Cisco Catalyst Express 520 that has a default configuration of two VLANs (default, Cisco-Voice).  When I plug a Polycom IP phone into the switch, it does not get a DHCP assigned IP address from my Cisco ASA 5505.  How can I tell the switch (or the ASA) to assign the Polycom phones with a DHCP assigned IP address?  It seems that the smartports recognize these phones as IP phones and assume they will be getting their IP address from a phone-only DHCP server.  We'd like for the single DHCP server to provide addresses for phones and other devices.
0
Comment
Question by:artisit
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 6

Expert Comment

by:ged125
ID: 24318550
Do you have an interface on the PIX for both the voice and the data VLAN?   The PIX will only hand out DHCP to devices connected to a subnet that is is directly connected to.  Can you include your switch configuration?  Have you thought about using the switch for DHCP?  I'm not sure if the 520 supports it, but try typing "IP DHCP POOL <POOL NAME>" from the globabl config mode to see if it lets you into DHCP configuration mode.
0
 

Author Comment

by:artisit
ID: 24319039
The 520 doesn't have a CLI.  Everything is done via the Cisco Configuration Assistant.
0
 
LVL 9

Accepted Solution

by:
Donboo earned 1500 total points
ID: 24321022
The switch does not support DHCP pools.

if you want the ASA to handout DHCP you need the ASA to be present on the Voice VLAN. So you need to make a trunk to the ASA and give it an IP in the voice VLAN else it wont give an IP.
0
 
LVL 79

Expert Comment

by:lrmoore
ID: 24334755
Set all ports to smart port role of PC only, not pc+ phone
0

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
Let’s face it: one of the reasons your organization chose a SaaS solution (whether Microsoft Dynamics 365, Netsuite or SAP) is that it is subscription-based. The upkeep is done. Or so you think.
As a trusted technology advisor to your customers you are likely getting the daily question of, ‘should I put this in the cloud?’ As customer demands for cloud services increases, companies will see a shift from traditional buying patterns to new…
Both in life and business – not all partnerships are created equal. Spend 30 short minutes with us to learn:   • Key questions to ask when considering a partnership to accelerate your business into the cloud • Pitfalls and mistakes other partners…
Suggested Courses

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question