1. N e t d i s c o I’m max… current job / school This is netdisco
This is the Discochimp (intentionally lowres)
Behind the discochimp - Map of ucsc (820 devices)
explain colors / shapes
clickable / popup

2. http://netdisco.org/resnet_2004.pdf (.ppt)
Intro ► Welcome
Intro
What is Netdisco?
History
Details
Features
Requirements
Device Support
Future
Q+A
Intro warner
Outline of what I’ll talk about
30 mins / q+a
Interrupt me! I’ll probably tell you “Hold on I’ll get to that!”
Vendor: “We offer a wealth of functionality!”
J. Warner: “We call that rope.”
(.ppt)

3. Intro ► What is Netdisco?
Open Source Software
Network Management
Switch Port Management
Inventory
Usage History and Security
Explain Cat Slug – CATS , Mascot. Pulp fiction reference?
Open Source != Free – UCSC paid a lot
Ucsc continues to support through dev site, access…
Lives on at Source Forge / independent
Got an ip addr, where is the port??
Go slower! No Hands in Pockets! Face Crowd!
Product of UC Santa Cruz

4. Screen shot!
I know you can’t read it…
Showing an HP 2524 Switch and a few of its ports
Device Search
Node Search

5. Intro ► Node Search
Notice this guy has 5 IP addresses and when they were used last
Bottom line shows switch port where he lives, click on it to go to view

6. Intro ► Motivation Problem Users on a Resnet?
History of Port and IP Usage
Inventory of Network Devices
Network Debugging & Monitoring
Easy to use
IP Address to Switch Port Finding
Manage Port Shutoffs
End-of-the year reporting on shutoffs
Log who did what and why
“Suponea bait”
Database contents used to seed other programs
Non-IOS Crowd

7. Intro ► History May 16, 2003 – First Public Release on Source Forge
Dec 30, 2002 – SNMP::Info Released to CPAN
Oct, 2002 – Coding Begins
April, 2002 – Booloo wants a MAC finder
Oct, 2001 – arpnip and macsuck
“Does netdisco ever feel like a really bad porn movie to you too?”
– Mike Hunter, UC Berkeley
Homegrown solution (like everyone else)
NTS:
Jim -> arpnip – arp table from router for IP to MAC
Mark -> macsuck – Forwarding table / CAM table from Switch for MAC to Switch Port
me -> netdisco
Like all good apps : Shell Script to full app
Full time job
Learned SNMP
Left on my own, worked at home. Molded by Booloo and others.

8. Intro ► Sources of Info MAC Address  Switch Port Number
Switch: “Computer 08:08:08:e0:e0:00 lives on Port 5.”
IP Address  MAC Address
Router: “IP Address is being used by :08:08:e0:e0:00.”
IP Address  DNS Name
DNS Server: “Address is netdisco.org.”

9. Intro ► L2 vs L3 (L2) Layer-Two - Ethernet MAC address
Switches, Hubs
08:08:08:e1:e1:00
(L3) Layer-Three - IP Address
Routers, Firewalls

10. Details Features Requirements Architecture Device Support “Features”
Check Pace
Check for a Pulse
Breathe
Drink Water

11. Details ► Features Switch Ports MAC  IP  SwitchPort
Ports with lots of IP or MAC Addresses in use
Central location to disable Ports
AP Finder is wireside

12. Details ► Features Network Security and Maintenance L2 Traceroute
Duplex Mismatch Finder
Wireless Access Point (AP) Finder
AP Finder is wireside

13. Details ► Features Reporting Pretty Map IP Address usage History
Network Inventory
by IOS, Vendor, Model, Subnet
You can click on it too!

14. Zoom into single port

15. Details ► Features ► Port View
Name – human name “Bob’s computer”
Connected Devices
Remote CDP info
IP Phone info
Connected IP addr and hostnames
age stamp
Log:
Who did it (from which IP)
Why they did it
Shutoff:
Fixed list of reasons (good for end-of-year audits)
record who did it

16. Details ► Features ► Port Control
Note:
Who turned it off
When they turned it off
From where did they turn it off
Why did they turn it off – fixed reason?
Details
Paper trail for later statistics and tracking down stuff
Conversations

17. Details ► Features ► Port Log

18. Details ► Requirements
Computer (P3 / 500M / 10G / Fast I-O )
Operating System (Linux, xBSD, OS/X)
Software*
Admin (Unix guru advised)
Network (Cisco favored)
Time (LOTS)
Text Editor
*netdisco, Perl, Mason, Net-SNMP, PostgreSQL, Apache 1, mod_perl, mod_ssl, GraphViz, MIBs
Just download it, doubleclick SETUP.EXE and Hit Next a few times and you’re done!
(cough)

19. Details ► Architecture
Front-End
Back-End
Apache Web Server
Shared Library
SNMP::Info
Cron
Mason Components
Database
Main EXE
Second to chew
3 main parts – back,front,db
Database abstraction. Currently postgres. Porting to mysql
Mason = PHP except doesn’t suck and all Perl
Admin daemon – other copy of main exe
SNMP only – no telnet, sup p/w, CLI
Oracle/pinnacle integration
Notice front end only can communicate via database – security measure
SNMP – v1,v2, maybe v3. R/O or R/W
Admin Daemon
SNMP
Netdisco
Browser
Switches and Routers

20. Details ► Device Support
Cisco HP
Bay
Foundry
Allied
Asante
Zyxel
Older 1900’s have problems with some versions of firmware
4000’s have some SNMP issues …
3Com support reported
Linux support (net-snmp) reported

21. Details ► Device Support
SNMP::Info
Supports all SNMP devices
Easily extendable
Baseline compatibility with MIB-ii
Vendor-Specific Extensions
Attach MIBs to device families
All device-specific stuff lives here
Easily if you know Perl and SNMP and have too much freetime

22. Details ► “Features” INSTALL Process PostgreSQL Performance
feature (n) - a prominent aspect of something
INSTALL Process
PostgreSQL Performance
Problem Device Families
“Features”? – Notice it didn’t say GOOD aspect
Average install hrs
DB supersized
Cat4000, Some 3Com…

23. The Future of Netdisco Future Features Maintenance Packaged Version
discograph – MRTG / Cricket / NRG type thingy
MySQL Port
Maintenance
Packaged Version
Say that one three times
SF – RFE
RRD integration
Maintenance:

24. Q+A NOW ACCEPTING QUESTIONS* For more info visit: Demo Site:
Demo Site:
*(Answers not Guaranteed)
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