How do you configure VLANs in a domain environment? How will clients get their IPs, and is it possible to communicate...
across different VLANs in this environment? What will the configuration requirement be on the DHCP server?
To answer the first question, the answer is always: it depends. Configuring VLANs is fairly straightforward based on the platform chosen in the switching environment to support VLAN administration. Unfortunately the configuration is actually the easiest part, the hard part is designing an adequate VLAN design.
Once you have that, configuration is clearly documented in the switch manual. To get a good VLAN design, it is imperative that you understand the network, application distribution model, and user access methods.
Clients do not get their IP's based on the VLAN assignment model. That is traditionally a question that is handled by either deploying a DHCP server (generally used for client machines) or statically assigning IP addresses (generally used for DNS management of servers). Often times this is more of a political decision (got to love the layer 8 issues) than a technical one; but a fairly good design model is to use DHCP servers for client workstations, set up into DHCP zones and to use DNS and manual IP assignment for servers.
The configuration requirements for DHCP servers traditionally depend on the size of your network and how you logically want to break up these networks. Most notably, I see DHCP zones logically set up by geographic region. This configuration tends to provide better stability over routing and switched environments and, coupled with the proper VLAN configuration, makes localized traffic more local which is always a good thing.
Dig Deeper on Network Design
Related Q&A from Lindi Horton
Lindi Horton explains how to provide the fastest Internet sharing speed to a client when many users are trying to access the internet as well as ... Continue Reading
Network Administration expert, Lindi Horton provides her expertise on advantages of DNS, and provides an example of a reliable and flexible DNS ... Continue Reading
Network administration expert, Lindi Horton answers a query regarding file server troubleshooting. She explains potential reasons for file server ... Continue Reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.