Enabling dhcp server on N1524 only for a specific VLAN

Question

Hello, I'm quite new to Dell networking products. I recently installed a N1524 at a customer's office and now he would like to set up a WIFI-guest specific VLAN whoose only purpose is to grant navigation to office guests without letting them interfere with main network. I have already set up this vlan as no. 99 and it's perfectly separated from the others and navigating. Substantially all physical interfaces are trunked and the vlan tag decides the game. In this picture it will be the access points which will be generating the 99 tag and adhere to that specific vlan. NOW: I've read about the 'service dhcp' and 'ip dhcp pool' commands, so I would like to know if I can use them just to make the switch itself become the DHCP server JUST for vlan 99. Should I issue the 'ip dhcp pool' command and following config inside the vlan 99 configuration? Or what? This is not a case of relaying any external DHCP server, I just would like to take advantage of the N1524 characteristics in order to simplify the network. Thanks for your useful answers.

derjaegermeister · Answer

Hello,

thanks for answering. Fiddling with APs is no good, as they are EAP245 by tplink, no dhcp server included.

As for DHCP config, it's exactly the one I've read in the manual but is referred to a system-wide config.

I would like the dhcp pool to act just for one specific vlan and not for the others (in the future I might also consider further separated configs for other vlans). I tried to configure the ip dhcp pool within interface vlan, but is not possible. So there should be some way to associate it only with that vlan and not others.

At the moment I circumvented the trouble using ip helper, but it's not the desired solution, as I am trying to simplify the network and not relaying on further equipment.

Could you show a feasible way to do it? Currently the switch already owns an IP address within the vlan.

Thanks

derjaegermeister · Answer

Thanks :)

derjaegermeister · Answer

Thanks for your support!

So basically would the following lines work as dhcp server for vlan99 without mentioning the pool name within vlan config?

interface vlan 1
ip address 192.168.1.254 255.255.255.0

interface vlan 99
ip address 192.168.99.254 255.255.255.0
ip helper-address 192.168.1.254 dhcp

ip dhcp pool surf1
console(config-dhcp-pool)#network 192.168.99.0 /24
console(config-dhcp-pool)#domain-name example.com
console(config-dhcp-pool)#dns-server 8.8.8.8 8.8.4.4
console(config-dhcp-pool)#lease 0 2
console(config-dhcp-pool)#default-router 192.168.99.254

Kahramanse · Answer

Hi,
I have an N1524 and am trying to configure dhcp server only on VLAN 1.
Reading the manuals I should configure service dhcp and then ip dhcp pool.
I dont see either service dhcp or ip dhcp pool commands available on the switch.
There is no DHCP server option under routing--ip-- menu at web management interface.
Do I need to enable another protocol before I configure DHCP server ?

Molodoko · Answer

I know this is REALLY late, but on the PDF that was shared above specifically says that DHCP Server option is not available on the Dell N1500 series switches....Is this still the case?

DELL-Josh Cr · Answer

Hi Molodoko, It does not support DHCP Page 1159 https://dell.to/2XuMKrz   N2000 and above are listed as supporting it.

derjaegermeister · Answer

Hi, we solved the issue by using a cisco switch, which also enabled us to use eigrp, which N1524 hasn't.

Considering that we needed more ports, now that N1524 is serving as a branch of the core (cisco) switch.

Case closed.

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