Network Registration & Bandwidth Management Gary Holeman Ken Johnson Tim Medin.

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Presentation transcript:

Network Registration & Bandwidth Management Gary Holeman Ken Johnson Tim Medin

LeTourneau Internet Bandwidth History 1998 – 1.5 Megabit/sec shared with 5 institutions, very unreliable 2000 – 1.5 Megabit/sec dedicated, commercial provider 2002 – 3.0 Megabit/sec dedicated, commercial provider August 2004 – 6.0 Megabit/sec dedicated, two commercial providers, Autonomous System Number (ASN) belongs to LeTourneau, Border Gateway Protocol (BGP) Routing to balance load between providers and provide fault tolerance March 2005 – 9.0 Megabit/sec dedicated, two commercial providers June 2005 – 21 Megabit/sec on a full SONET fiber ring both to the campus and on the campus, providing protection from fiber cuts, both on the campus and within Longview. 3 Megabit/sec with secondary provider for fault tolerance. July 2006 – Expanding to 45 Megabit/sec on the SONET ring, with two different sources

LETU Internet Bandwidth Year Mbit/sec

Assumption It will not be possible to control the growth in bandwidth use without individual responsibility and accountability.

Background Problems –Virus Containment Outbreak in Fall 2004 –Difficult to Quarantine –No Direct Policy Notification

Requirements Quarantine Trust Registered Computers Track Usage Force DNS Naming Security Levels

Registration Solutions NetReg –Tested & Stable –Moderate Support –Security Only at Boot –No VLAN Support Decision: Not Secure Enough

Registration Solutions Commercial Software –Dedicated Support –Stable –Very Expensive Decision: Too Expensive

Bandwidth Management Solutions Commercial Software –Stable –Ramping –Expensive –Support Decision: Implementation Failed

Registration Solutions Custom Solution –Monetarily “Cheap” –Customizable –Development Time Citadel is Born

Citadel Connect to Network Redirect to Registration Page Validate Username, MAC, and Hostname Agree to Policies & Submit Move VLAN Registration Process Wait for New IP

Citadel Link Up Query Switch Lookup MAC Move VLAN Link Life Cycle Link Down SNMP Link Down Trap SNMP Link Up Trap Link Up SNMP Link Up Trap Query Switch Lookup MAC Move VLAN Link Down SNMP Link Down Trap Move VLAN

Citadel Query PacketShaper Translate IP to MAC Lookup User Log Data Move VLAN (Over Limit) Bandwidth Logging Wait next interval

Components Citadel WatchtowerGarrison KeepEmissaryHerald SNMP Trap Handling Move VLANs Management (Web) Bandwidth Management Messaging

Security Levels & VLANs Untrusted Student Faculty/Staff Voice Admin Special

Management

Managment

Management

Results No Virus Outbreaks Faster & Better Tracking Easier Network Troubleshooting Better Communication

Implementation Steps Fall 2005 – Announced future bandwidth allocation to student January 2006 – FAQ with limits and costs provided to students January 2006 – bandwidth detail pages available to students Student newspaper articles, student IT committee meetings May 2006 – Limits and costs in place

Costs and Limits Internet usage limitMonthly Fee < 3 GB/monthFree GB/month$ GB/month$ GB/month$ GB/month$100

Questions?

Thank You