Multiple DHCP scopes on TZ215 with Cisco SGE2010 managing the Vlans

Posted on 2013-01-18
Medium Priority
Last Modified: 2013-01-29
I have a Cisco SGE2010 connected to a Sonicwall TZ215. There are 3 Vlans being managed by the switch -, (Vlan 1) (Vlan 10) and (Vlan 20).
On the Sonicwall router - Interface X0 is main Lan subnet Interface X5 is connected to the Cisco switch with an IP of and the Cisco has it's main IP address set at
All Vlans and the Main Lan are communicating with each other and all subnets can get to the Internet. My problem is I need the Sonicwall to provide DHCP addresses to each Vlan subnet.
There is a post on this site that did this, but the specific configuration steps on both the router and the switch are not given. Can someone help me with this?

Thanks in advance
Question by:drasmussen
  • 2
  • 2
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 38796637
If I remember right, the tz series doesn't understand vlan packet tags. You have to get to the NSA for that.
So the trick is connecting one port for each vlan from the Cisco to the sonicwall. Each port is a different x interface on the sonicwall and the Cisco is set to only allow a single vlan on each of those ports. You can then assign a dhcp scope to each x interface

Accepted Solution

drasmussen earned 0 total points
ID: 38815692
Actually the TZ series does support vlans fully. They run the latest version of Sonicwall's enhanced OS (5.08 something) and it supports vlans being built as sub-interfaces on a physical port like X5 for example. I did get the DHCP working like I wanted to by assigning a ip helper-address on the switch for each vlan subnet.
LVL 39

Expert Comment

by:Aaron Tomosky
ID: 38815779
Ahhh, I just saw that in the 5.8 release notes. Interesting. Glad you got it working.

Author Closing Comment

ID: 38830335
I new what I needed to do, but did not know how to get into the the command line interface for the cisco small business line of switches as it is not documented. Basically what you have to do is log on to the console and when you are at the menu, you press control z and key in lcli (light weight command line interface), then you log on again and are now in cisco's regular command line interface shell. You don't have all of the commands available but you can do most of the configuration you need that the web GUI will not give you access to.

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

This month, Experts Exchange’s free Course of the Month is focused on CompTIA IT Fundamentals.
If you try to migrate from Elastix to Issabel, you will face a lot of issues. These problems are inevitable but fortunately, you can fix them. In the guide below, I will explain how I performed the migration while keeping all data and successfully t…
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

619 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