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NAV A comprehencive network management tool Vidar Faltinsen NTNU, Trondheim, Norway The university network 17000 machines connected, 3500 student dormitories gigabit MAN across the city 1 Gbps Internet access, peak load of 500 Mbps 30 routers, 1400 switches, 150 WLAN access points UNINETT

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NAV

A comprehencive network management tool

Vidar Faltinsen

NTNU, Trondheim, Norway


The university network

  • 17000 machines connected, 3500 student dormitories

  • gigabit MAN across the city

  • 1 Gbps Internet access, peak load of 500 Mbps

  • 30 routers, 1400 switches, 150 WLAN access points

UNINETT

AS 224

NTNU: AS 64514

Kalvskinnet

Øya

Sentrum

Oslo

network operations

  • staff of 8 persons

  • many students

Trd

HB

ET

SB

ntnu-gw2

ntnu-gw

Gløshaugen

RFB

Kjemi

Tyholt

Moholt

SINTEF

AS 64512

Dragvoll

Lade


Why develop NAV?

  • Looked at several commercial NMS in 1998

    • Focus on monitoring (not configuration)

    • Wanted something simple, yet powerful

  • Implemented a basic system in 1999

    • Availability monitor understanding topology

    • Traffic statistics based on MRTG

  • Evolved from there...


NAV status - August 2003

Development

  • 4 years of development: 1999 -2003.

  • 6 ”man years” of work, 20 persons involved.

  • 40000 lines of code. Perl, php, java, postgresql.

Distribution

  • Development projects with funding from UNINETT

  • Freely available to UNINETT members

Installations

  • Now running at 4 universities and 10 colleges in Norway.


The heart of NAV...

device

tracker

network

explorer

network

load map

cricket

report

generator

tabular

reports

NAVdb

RRD

machine

tracker

delay /

loss

status

monitor

service

monitor

threshold

monitor

jabber

www

external

systems

event and alert engine

email

SMS

The main components


The NAV database

a model of the running network

Seed files

perl scripts

NAVdb

snmp

net_equipment.txt

room ip-address in charge category snmp community

300 : 129.241.0.101 : net : GW : : xxx

230 : 129.241.161.13 : net : SW : : xxx

230 : 129.241.75.6 : net : EDGE : : xxx : yyy

Manual registration of key information


mac 2 port

Router-

interface

switchport

vlan

type

IP prefix

device

location

IP 2 mac

organization

inventory

Key tables

1 … N


Physical topology

  • ARP

  • CAM

  • CDP

Vlan topology

  • trunks

  • STP

Autodetecting the topology


report

generator

NAVdb

machine

tracker

Reports


Machine tracking


NAVdb

cricket

tabular

reports

makecricketconfig.pl

RRD

config-tree

routers

router int.

switches

sw. ports

cricket collector

router1

switch1

router2

switch2

routerx

switchx

Traffic data gathering


Cricket


network

explorer

network

load map

cricket

report

generator

tabular

reports

NAVdb

RRD

machine

tracker

Visualization


Network load map (1)


Network load map (2)


Network load map (3)


Network explorer


network

explorer

network

load map

cricket

report

generator

tabular

reports

NAVdb

RRD

machine

tracker

status

monitor

threshold

monitor

Network monitoring


network

explorer

network

load map

cricket

report

generator

tabular

reports

NAVdb

RRD

machine

tracker

The event system

status

monitor

threshold

monitor

www

external

systems

event and alert engine

email

SMS


This year’s activity

device

tracker

network

explorer

network

load map

cricket

report

generator

tabular

reports

NAVdb

RRD

machine

tracker

delay /

loss

status

monitor

service

monitor

threshold

monitor

jabber

www

external

systems

event and alert engine

email

SMS

Current status

WLAN support

system management

integration


Further information

web: metanav.ntnu.no

email: Vidar.Faltinsen@itea.ntnu.no

Questions?


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