Re: Regarding Helping address

Acutally helper address is already configured on distribution switches and
all the vlan clients are happily taking IP address from DHCP, i just want to
know why that device is not taking IP from DHCP server even i span the vlan
252 to the core ...

On Sun, May 16, 2010 at 9:38 PM, Shahid Ansari <shahid1357_at_gmail.com> wrote:

> Walekumus salaam ,
>
> Faisal , Vlans are broadcast domains in switched network regardless of
> their physical location (Core switch or access switch) and If I understood
> your question correctly ,your DHCP server is in VLAN 1 and all other clients
> are in x,y,z vlans.
>
> 1)Do "no ip directed-broadcast" on Vlan 1
> 2)Configure ip helper address on client side vlans x,y,z
>
> Thanks
> Shahid Ansari
>
> On Sun, May 16, 2010 at 2:08 PM, Faisal Ilyas <faisal.learning_at_gmail.com>wrote:
>
>> Salam,
>>
>> I have a strange problem or might be i am unable to understand
>> something...
>>
>> I have 1 distribution and 1 core switch, all the vlans are terminating to
>> the distribution switch inshort distribution is their default gateway same
>> as for voice VLAN 252 its gateway is distribtution ... well the vlan 1 was
>> old so thats why it is spanning to the core and core is its default
>> gateway...
>>
>> Well i have to connect one device in the voice vlan but because of running
>> short of ethernetports i plug this device into the core and I span the
>> voice
>> vlan to the core by allowing vlan 252 on the trunk of distribution and
>> create vlan 252 on core and allow this in the core L2 trunk and put that
>> port in the vlan 252.
>>
>> As default gateway of vlan 252 is in distribution and DHCP server is in
>> vlan
>> 1 and helper address is configured on distribution. But i dont know why
>> that
>> device is not getting IP from DHCP server when i put the IP address
>> manually
>> it pings everything fine but its not getting IP address from DHCP ... i
>> know
>> that its not a good thing what i did but i just wanna know the reason why
>> this is happening ???
>>
>>
>>
>>
>> --
>> Regards,
>> M. Faisal.
>>
>>
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-- 
Regards,
M. Faisal.
Blogs and organic groups at http://www.ccie.net