Re: DHCP Problem

Also I would enable the dhcp debugging -it won't overwhelm the switch.
 You can then see if the discoveries are coming, offers, certain
options expected, etc. I assume the phones don't need some boot file.

-Rich

On Tue, Apr 21, 2009 at 3:21 PM, Jose A. Arnau Alvarez
<jaral18_at_hotmail.com> wrote:
> Hi John,
>
> I think that there are many things that you can test or review. Initially I
> change some things in your configs as follows:
>
>
> CORE
>
> ip dhcp excluded-address 172.16.1.100
> ip dhcp excluded-address 172.16.1.1 172.16.1.10
> ip dhcp excluded-address 172.16.1.252
> ip dhcp excluded-address 172.17.1.252
> ip dhcp excluded-address 172.18.1.252
> ip dhcp excluded-address 172.18.100.252
> !
> ip dhcp pool DATA
> network 172.16.0.0 255.255.240.0
> domain-name wr
> default-router 172.16.1.252
> lease infinite
> !
> ip dhcp pool VOICE
> network 172.17.0.0 255.255.240.0
> domain-name wr
> default-router 172.17.1.252
> lease infinite
> !
> interface Vlan10
> ip address 172.16.1.252 255.255.240.0
> !
> interface Vlan20
> ip address 172.17.1.252 255.255.240.0
>
>
> Access-Switch for Data
>
> interface FastEthernet0/46
> switchport access vlan 10
> switchport mode access
> spanning-tree portfast
> !
> no interface Vlan10
>
>
> Access-Switch for Voice
>
> interface FastEthernet0/46
> switchport voice vlan 20
> !
> no interface Vlan20
>
>
>
> You don't need redirect the DHCP requests to DHCP server, if this server is in
> the same vlan that the clients, and so you don't need interface vlan in this
> switches. Also I have some questions. In the voice vlan, do you have IP
> Phones? Have you check that phones aren't preconfigured with any option
> (forced voice vlan, dhcp disable, and so on)? What's the exactly problem in
> voice vlan, the phones can not get IP?
>
> I hope help you!!!
>
> Regards.
>
> ---------------------
> ---------------------
> Jose A. Arnau Alvarez
> CCIE R&S #23051
> ---------------------
> ---------------------
>
>
>
>
>
>> From: ciscoarabia_at_live.com
>> To: ccielab_at_groupstudy.com
>> Subject: DHCP Problem
>> Date: Tue, 21 Apr 2009 07:20:23 +0000
>>
>> Hi All
>>
>> I have the network have an access switches connected through trunk to the
> CORE
>> and all switches able to ping and connectivity is 100%. I bit issue in
> DHCP.I
>> make a seperate vlan for DATA and VOICE, these DHCP scope define in the
> core
>> and once I connect to DATA network Switches -> will take the IP from the
> data
>> pool but for voice not working.....Dont know why ?
>> There is not firewall or router to block any traffic, Could please help out
>>
>>
>> CORE
>>
>> ip dhcp excluded-address 172.16.1.100
>> ip dhcp excluded-address 172.16.1.1 172.16.1.10
>> ip dhcp excluded-address 172.16.1.252
>> ip dhcp excluded-address 172.17.1.252
>> ip dhcp excluded-address 172.18.1.252
>> ip dhcp excluded-address 172.18.100.252
>> !
>> ip dhcp pool DATA
>> network 172.16.1.0 255.255.240.0
>> domain-name wr
>> default-router 172.16.1.252
>> lease infinite
>> !
>> ip dhcp pool VOICE
>> network 172.17.1.0 255.255.240.0
>> domain-name wr
>> default-router 172.17.1.252
>> lease infinite
>> !
>> interface Vlan10
>> ip address 172.16.1.252 255.255.240.0
>> !
>> interface Vlan20
>> ip address 172.17.1.252 255.255.240.0
>>
>> Access-Switch for Data
>> interface FastEthernet0/46
>> switchport access vlan 10
>> switchport mode access
>> spanning-tree portfast
>>
>> interface Vlan10
>> no ip address
>> ip helper-address 172.16.1.252
>>
>> Access-Switch for Voice
>> interface FastEthernet0/46
>> switchport voice vlan 20
>>
>> interface Vlan20
>> no ip address
>> ip helper-address 172.17.1.252
>>
>>
>> Regards
>> John
>> _________________________________________________________________
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>
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Received on Tue Apr 21 2009 - 15:58:27 ART