Cisco 1921 Multiple VLAN (supported?)

[Erik Hennerfors]

I have a Cisco 1921 Router, a Cisco Catalyst 2960 and a Cisco Catalyst 2970 and I want the router to be able to assign ip-addresses by what VLAN a device is active on.

VLAN1: 10.0.0.0/24

VLAN2: 10.0.1.0/24

The router is connected to the Catalyst 2960 and there on to the Catalyst 2970 so the VLAN1 and VLAN2 is active on the to switches and the Router.

My main question: Is this possible?

[cadet alain]

Hi,

you can configure multiple  dhcp scopes on Cisco IOS but could you elaborate your requirements .

Regards

Alain

Don't forget to rate helpful posts.

[kcnajaf]

Hi Erik,

Hope the below diagram represent what you want to archive. Also please find the typical configuration on router and switch.

Regards

Najaf

Please rate when applicable or helpful !!!

[Erik Hennerfors]

Does this require 2 NIC? The 1921 one have 2 nic without extension cards, eth0/0 act as WAN port and eth0/1 is the LAN port.

Does it work with multiple vlans on the same NIC?

[kcnajaf]

Hi Eric,

If the interface can support sub interface then you dont need two interface. You can check if the device support sub interface with below command.

conf terminal

int eth0/1.1

enacapsulation dot1q 1

int eth0/1.2

enacapsulation dot1q 2

Hope this helps

Regards

Najaf

Please rate when applicable or helpful !!!

[Erik Hennerfors]

I can't get it to work on my Cisco Catalyst 2970, No servers are getting any ip-address, if I try on the 2969 it works, what am I doing wrong?

Catalyst 2970 Config:

http://pastie.org/6090745

Catlust 2960 Config:

http://pastie.org/6090764

[kcnajaf · Accepted solution]

Hi,

When you say it is working from 2960 do you mean you are able to get the ip address from dhcp scope of vlan 1 and vlan 2?

On the non working switch try to issue below command and give a try

Config terminal
No ip routing

Regards
Najaf

Sent from Cisco Technical Support iPhone App

[Erik Hennerfors]

So I mangage to get everything up, i just reloaded all the devices and it works..dont know i I forgot to same something but it works not.. Thanks all for the help

[kcnajaf]

Hi Erik,

Glad to know that everything is woking as expected.

Please dont forget to rate for the useful answers.

Regards

Najaf

Please rate when applicable or helpful !!!