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MeshTestbed

1 mesh testbed

mesh testbed

Basically, we will test niit, dynamic stateless encapsulation of ipv4 traffic to traverse ipv6 networks.

the bcc crowded with nodes, an ideal situation for testing future technologies

Setup partly based on https://wiki.freifunk.net/Niit Babel Download: http://www.pps.jussieu.fr/~jch/software/files/

Goal:

Compare BABEL on v6 and niit with olsr v4.

needed:

wireless links measurement: wprobe, wprobe-exporter
topology of:
- olsr
- babel
where does the traffic flows: hash based sampling: impd
arp table: snmp(?)
cpu&mem usage of several components: snmpd
- routing daemons
- probes
- luci(?)
topology of all routing protocols
complete uci config: MeshTestbed/UCI

parameter

essid: 26c3.freifunk.net
bssid: 02:ca:ff:ee:26:c3
ULA prefix: fdca:ffee:babe:26c3::

image

firmware will be based on trunk, add luci, packages, niit, git://81.89.99.20/openimp-feed.git and git://dev.dd19.de/pub/26c3 to feeds.conf

env (for ./script/env) is found under: git://dev.dd19.de/pub/26c3-env

gitweb: https://dev.dd19.de/cgi-bin/gitweb.cgi?p=26c3;a=summary check out Wireless for more infos

some builds: https://dev.dd19.de/~alx/26c3-bin/

collector

openimp example collector from customized libipfix: http://nbd.name/libipfix.r51.tar.gz
observation domain gets into openimp uci config: 32bit integer

zeugs

nodeid in system.nodeid

nodeid zu macs und ip per snmp

impd schickt nodeid

wprobe-export schickt nodeid

observationdomain wird von nodeid abgeleitet.

IP-adressen

mesh

olsr meshadressen 10.31.0.0/15
- interne server 10.31.0.x
  - meshgate 10.31.0.1
  - collector 10.31.0.2
  - wiregate1: fonera2
    - WAN: 10.31.0.3
    - WLAN: 10.31.0.4
  - wiregate2: asus
    - WAN: 10.31.0.10
    - WLAN: 10.31.0.11
  - wiregate3: asus
    - WAN: 10.31.0.12
    - WLAN: 10.31.0.13
  - collector-2 10.31.0.20
- olsr adressen per ahcp 10.31.2.0-31
wlan dhcp adressen 77.87.52.0/23
- per node ein /28
- netzwerk erreichnet sich aus olsr adresse.
- 10.31.2.x
- 77.87.52.16*x/28

wan

meshgate extern: 77.87.55.253/30

mesh node wan <-> wlan

config changes:

ahcpd config: 'no_config' 'true' + interface wan
babeld init script: start() => activate babel withouth ahcp
set static ipv4 + ipv6 addresses on wan + freifunk
deactivate firewall
activate olsrd on wan
activate babeld on wan

2do

niit auf meshgate
dhcp on wlan
load balancing between niit and olsr
snmp collect

Babel Config

https://dev.dd19.de/cgi-bin/gitweb.cgi?p=26c3;a=blob_plain;f=26c3-files/files/etc/babeld.conf;hb=master

niit src snapshot

https://dev.dd19.de/cgi-bin/gitweb.cgi?p=niit;a=snapshot;h=c08d7246e1b39604d8cc1a59602d143394b69f1b;sf=tgz

Retrieved from "http://events.ccc.de/congress/2009/wiki/MeshTestbed"

Category: Wireless