Transcript Network Registration & Bandwidth Management

Network Registration &
Bandwidth Management
Gary Holeman
Ken Johnson
Tim Medin
LeTourneau Internet Bandwidth History
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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
50
45
40
35
30
Mbit/sec
25
20
15
10
5
0
1998
1999
2000
2001
2002
Year
2003
2004
2005
2006
Assumption
• It will not be possible to control
the growth in bandwidth use
without individual responsibility
and accountability.
Background
• Background
• Problems
–Virus Containment
• Outbreak in Fall 2004
–Difficult to Quarantine
–No Direct Policy Notification
Requirements
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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
Registration Process
Connect to
Network
Redirect to Validate
Registration Username,
MAC, and
Page
Hostname
Agree to
Policies &
Submit
Move
VLAN
Wait for
New IP
Citadel
SNMP
Link Up
Trap
Link Up
Move
VLAN
Query
Switch
Link Life Cycle
SNMP
Link Down
Trap
Link
Down
Lookup
MAC
Move
VLAN
Citadel
Bandwidth Logging
Query
PacketShaper
Translate
IP to MAC
Lookup
User
Log Data
Move VLAN
(Over Limit)
Wait next
interval
Components
Citadel
Watchtower
Garrison
Keep
Emissary
Herald
SNMP Trap
Handling
Move
VLANs
Management
(Web)
Bandwidth
Management
Messaging
Security Levels & VLANs
Untrusted
Student
Faculty/Staff
Voice
Admin
Special
Management
Management
Management
Management
Managment
Management
Results
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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 limit
Monthly Fee
< 3 GB/month
Free
3 - 10 GB/month
$25
10 - 30 GB/month
$40
30 - 50 GB/month
$60
50 - 120 GB/month
$100
Questions?
Thank You