Solved

dhcp helper command

Posted on 2009-05-18
2
531 Views
Last Modified: 2012-06-27
Hi there,
I've a single cisco router with 2 interfaces:
interface vlan 1: 10.152.0.126/25
interface vlan 2: 10.152.1.254/27

I've an IP phone sitting in vlan 2 subnet and it needs to get an I.P from DHCP server which is sitting in vlan 1 subnet. Now I do know that ip helper-address is required for phone to get I.P from another subnet; but just making sure which interface and which I.P do i specify in ip helpder-address command?

From my understanding, I think it should be on vlan 2 interface
Interface vlan 2
 ip helper-address 10.152.0.126 ??? (I.P of vlan 1 interface) or
 ip helper-address 10.152.0.102 (I.P of DHCP server itself) ???
0
Comment
Question by:nabeel92
2 Comments
 
LVL 79

Accepted Solution

by:
lrmoore earned 500 total points
Comment Utility
The ip helper-address command goes on the interface closest to the DHCP client - vlan 2
The IP address is the IP of the DHCP server itself.

Interface vlan 2
 ip helper-address 10.152.0.xxx  <dhcp server ip>

0
 

Author Comment

by:nabeel92
Comment Utility
yeah, thats what i thought so !
thanks ....
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

I see many questions here on Experts Exchange regarding switch port configurations and trunks. This article is meant for beginners in the subject to help to get basic knowledge about Virtual Local Area Network (VLAN (http://en.wikipedia.org/wiki/Vir…
Shadow IT is coming out of the shadows as more businesses are choosing cloud-based applications. It is now a multi-cloud world for most organizations. Simultaneously, most businesses have yet to consolidate with one cloud provider or define an offic…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

728 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now