Solved

VLAN Implementation - Routing & DHCP Helper

Posted on 2013-06-27
4
422 Views
Last Modified: 2013-06-27
I am working on segmenting out our data traffic to individual vlans.  I would like to have as much in place and configured on the switches as possible before reassigning all the ports to the appropriate vlans.  Is it safe for me to go ahead and enable the routing on our layer 3 switch and create the dhcp listener that will forward the traffic to our dhcp server ahead of time without affecting our live network?

Currently the network is 1 single broadcast domain on vlan1.  Since all traffic is on that single vlan1, I was hoping to do all the configuration, then just open a couple ports on each switch to test traffic and make sure it all works.  Then later on assign the bulk ports and be done?

Could I also define the default route to our firewall since the traffic by default is heading that direction anyway?  Would that have any impact?

Any suggestions would be great on how I can get the most done during business hours and minimize downtime for the main cutover.

Thanks!
0
Comment
Question by:CMCITD
  • 2
  • 2
4 Comments
 
LVL 26

Expert Comment

by:pony10us
Comment Utility
You can create/delete VLAN's with little or no impact until you assign ports to those VLAN's since they remain inactive until a port is assigned.
http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/VLANs.html
0
 

Author Comment

by:CMCITD
Comment Utility
So would having the routing enabled for testing a few ports affect the VLAN1 that houses the rest of the network traffic across the network?  Enabling the trunk ports, etc. As long as I keep the additional vlans that are active just for testing purposes?
0
 
LVL 26

Accepted Solution

by:
pony10us earned 500 total points
Comment Utility
You are correct.  There should be no impact on the existing VLAN's so you can test throughly before moving.  Remember that when you move a device from one VLAN to another you will probably need to do a release/renew for you IP address.
0
 

Author Closing Comment

by:CMCITD
Comment Utility
Awesome.  Thank You!
0

Featured Post

Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

Join & Write a Comment

This is the first one of a series of articles I’ll be writing to address technical issues that are always referred to as network problems. The network boundaries have changed, therefore having an understanding of how each piece in the network  puzzl…
Are you one of those front-line IT Service Desk staff fielding calls, replying to emails, all-the-while working to resolve end-user technological nightmares? I am! That's why I have put together this brief overview of tools and techniques I use in o…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

771 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

13 Experts available now in Live!

Get 1:1 Help Now