dhcp config

Unanswered Question
May 28th, 2007


i have a question about dhcp config.

i have a catalyst 4500 connected to 2 switch.

i configure vtp, and i configure 2 vlan with a different range of ip address.

i want configure dhcp.

i don't know if i must configur "dhcp pool" just in a catalyst switch,

or i configur all other switch?

I have this problem too.
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mohammedmahmoud Mon, 05/28/2007 - 06:23


You'll need to enable DHCP on the 4500 only, enable the dhcp serivce "service dhcp" then configure the pool with all your required parameters:

ip dhcp pool Clients



default-router - up to8

dns-server - up to 8

netbios-name-server - up to 8


lease {days [hours][minutes] | infinite}

HTH, please do rate all helpful replies using the scroll box on the right,

Mohammed Mahmoud.

yoyo_the_king Mon, 05/28/2007 - 07:26


thankyou very much, it's work fine.

but the device can not ping other device in other vlan.

i do "routing ip" command on catalyst,but any result.

have you an idee plz?

Amit Singh Mon, 05/28/2007 - 07:34

Have you configured the VLAN SVI's on the 4500 for all the Vlans. Once that is done you should be bale to ping the other hosts in different vlans. Configure SVI for each vlan that you want to communicate with.

Also, your SVI interface must be in UP/UP condition for rotuing to occur.


-amit singh

yoyo_the_king Mon, 05/28/2007 - 08:08


it's fien now, the problem was i didn't configure default router on dhcp pool.

thank you for your help.


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