[cisco-voip] slightly OT: dhcp reservations in IOS DHCPserverconfig

[Michael Thompson]

Not the most efficient, but this is a segment of the config that I had at a
customer with about 40 phones.

 

It's a pain to configure, but very consistently effective.

 

ip dhcp excluded-address 172.16.1.0 172.16.1.89

!

ip dhcp pool VOICE

   network 172.16.1.0 255.255.255.0

   default-router 172.16.1.1 

   option 150 ip 172.16.1.2 

   lease 3

!

ip dhcp pool USER1

   import all

   host 172.16.1.101 255.255.255.0

   client-identifier 0100.19e7.ff1b.8f  <--  MAC address of the phone
PRECEEDED by 01

 

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Joe Cisco
Sent: Friday, October 10, 2008 12:30 PM
To: Matt Slaga (US)
Cc: cisco-voip
Subject: Re: [cisco-voip] slightly OT: dhcp reservations in IOS
DHCPserverconfig

 

Do I have to create a separate pool for each reservation? Or can I

list multiple reservations in the same pool?

 

-Joe C.

 

On Fri, Oct 10, 2008 at 11:26 AM, Matt Slaga (US)

<Matt.Slaga at us.didata.com> wrote:

> Cisco calls it 'address binding' instead of reservation.

> Configure as follows:

> 

> Ip dhcp pool xyz

> Host 10.100.1.1 /24  (set to your 'reserved' ip address)

> Client-identifier 01ab.cdef.ghij.kl  (mac address preceeded by '01' to

> specify Ethernet media type)

> Hardware-address abcd.efgh.ijkl

> Client-name xyzclient1 (optional)

> 

> You can verify this with:

> Debug ip dhcp server packet

> 

> And check to see if the correct IP was given.

> 

> -----Original Message-----

> From: cisco-voip-bounces at puck.nether.net

> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Joe Cisco

> Sent: Friday, October 10, 2008 12:17 PM

> To: cisco-voip

> Subject: [cisco-voip] slightly OT: dhcp reservations in IOS DHCP

> serverconfig

> 

> I have a client with about 70 phones that require static IP addresses.

> DHCP is currently being performed on and must stay on an IOS router. I

> would prefer to simply create dhcp reservations for the mac addresses

> of the phones, rather than physically hard code the addresses on the

> phones themselves. Anyone had any experience and/or advice and an

> example IOS dhcp config with reserved mac addresses?

> 

> Thanks in advance,

> 

> Joe C.

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