More subnet in DHCP Server

Unanswered Question
Sep 9th, 2008

I have 3750 switch with Version 12.2(25)SEE3. I am running DHCP server on it for data/voice

I am running for data and for voice.

Ports are configured both for data/voice.

Now i want to add another subnet because users are getting IP address outage.

Please let me know how to add another subnet for voice and data and how to confiugre this subnet for DHCP server. How to configure the VLAN for this.

I will be very greatful to you.

I have this problem too.
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mahmoodmkl Tue, 09/09/2008 - 01:10


U need to configure another dhcp pool along with the excluded address same as it is done for the earlier dhcp pool.for eg:

ip dhcp excluded-address

ip dhcp excluded-address

ip dhcp pool users-bldg10







wasiimcisco Tue, 09/09/2008 - 06:44

Thanks for the reply,

but right now i have two vlan one for voice and one for data.

If i will include this pool in DHCP configuration. How to deal with Port configuration for vlan.

All ports are member of VLAN 100 and VLAN 110.

Will there need to add new vlan and assign the port to that vlan also.

mahmoodmkl Tue, 09/09/2008 - 07:36


U need to configure two DHCP Pools onne for the hosts ie. PC's and the other for IP Phones.

U need to assign the switch port as below

switchport mode access

switchport access vlan (vlan id)

switchport voice vlan (voice vlan id)




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