Main Nav

Message from

Independent of the whole Ipad/iphone/apple TV mdns wireless issue, we are constantly being approached by several groups on campus that manage our computer clusters and classroom equipment to have a single layer 2 network provided to them as they believe this will allow them greater flexibility to manage and protect equipment, and to provide the best method of collaboration and resource sharing (Apple products).


We have gone to great lengths to segment our wired network to user subnets that share a similar zone characteristic (Staff, Student, Printers) and are firewalled from each other. The method we use for zone placement is with Cisco Clean Access.


I believe their ability to manage their equipment has been solved with the appropriate rules, however it still gets used as a yet to be obtained goal.


Initially when we set this up, we decided shared use computers in clusters and classrooms would live in the student zone.


They have expressed a desire to be segemented from the student owned machines, which is a valid point.


Our concern is that this equipment lives in 40+ buildings, each homing to one of our 4 distribution routers that only connect via Layer3 connections. So we find ourselves faced with issues such as:


1.       Creating a new ‘zone’ for these devices

2.       How many vlans per distribution router

3.       How many devices maximum per vlan

4.       How many buildings share this new vlan.


Factors to consider are the fewer vlans, the more open it is to L2 mDns and protocols, but the more building uplinks that would be required to carry this broadcast traffic.


So I am looking to see what others have done, thought about, etc.  I have to think this is a common issue.


Thanks, Bob Richman

Network Engineer

University of Notre Dame



********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at


Connect: San Antonio
April 22–24
Register Now

Events for all Levels and Interests

Whether you're looking for a conference to attend face-to-face to connect with peers, or for an online event for team professional development, see what's upcoming.


Digital Badges
Member recognition effort
Earn yours >

Career Center

Leadership and Management Programs

EDUCAUSE Institute
Project Management



Jump Start Your Career Growth

Explore EDUCAUSE professional development opportunities that match your career aspirations and desired level of time investment through our interactive online guide.


EDUCAUSE organizes its efforts around three IT Focus Areas



Join These Programs If Your Focus Is


Get on the Higher Ed IT Map

Employees of EDUCAUSE member institutions and organizations are invited to create individual profiles.



2015 Strategic Priorities

  • Building the Profession
  • IT as a Game Changer
  • Foundations

Learn More >

Uncommon Thinking for the Common Good™

EDUCAUSE is the foremost community of higher education IT leaders and professionals.