Internal:Networking

Exactly what you'd guess.

Network services

Network address translation

IP range may be limited, and more secure this way by default

DHCP

Automatic connectivity negotiation—makes everyone's life easier

Caching nameserver

Resolution for local hostnames, speed

Lighttpd, Ruby

Web-based software for conference management

MySQL

Databases should be transferred to local server during conference in case of Internet connectivity outage

HTTP proxy

Speed++

IRC BNC

Keep people connected when they lose their WiFi link

Floor plan

Basement: Image:HdJ-UG.jpg
1st floor Image:HdJ-EG.jpg
2nd floor Image:1OG.jpg
3rd floor Image:2OG.jpg
4th floor Image:3OG.jpg

Access point placement

Backbone

Gartenhaus as backbone hub
Roof, connecting the broadnet uplink
In the lobby in front of Grosser Saal
Terassensaal

Those 4 APs will be equipped with high-gain antennas. The first two have to be outdoor antennas. The backbone will be closed to the public (encryption, MAC based access list, ...).

Terassensaal

One AP for the chill out area

Gartenhaus

One AP for the organization committee

Conference building

2 OG (3rd floor)

One AP for the lobby
One AP inside of Grosser Saal, connected to the first one via WDS (AP client mode)

3 OG (4th floor)

One AP for the lobby, connected to the first AP in 2 OG by cable

1 OG (2nd floor)

One AP for the lobby, connected to the first AP in 2 OG by cable
One AP inside of Kleiner Saal, connected to the first one via WDS (AP client mode)

EG (1st floor, ground level)

One AP for the lobby, connected to the first AP in 2 OG by cable
One AP in the corridor, in front of E10, connected to the first AP in 2 OG by cable
One AP in E11, connected to the first AP via WDS (AP client mode)
One AP in E10, connected to the second AP via WDS (AP client mode)
One AP in E12, connected to the second AP via WDS (AP client mode)

=> 16 APs in total

Access Point models

Linksys WAP54G

Cheap, only 60 Euro
Various modes:
- Access Point
- AP client, link an Ethernet to a WLAN
- Repeater, extending the range of an AP
- Bridge, two Bridges can connect two Ethernets
The different modes are mutually exclusive. A WAP54G can either be used as AP or to connect an Ethernet LAN or to extend the range.
SNMP support. Manual does not tell which SNMP version is used.
Web based configuration
detachable antennas
plastics case

Netgear WG302

about 200 Euro
DHCP server
Various modes:
- Access Point
- Point-to-point bridge
- Point-to-multi-point bridging
- Wireless repeater
- no AP client mode
The manual does not explicitly state this, but it looks like the modes being mutually exclusive, too.
SNMP support, syslog support
CLI support, config files can be copied from one AP to another.
SSH or web based config
RADIUS
detachable antennas, reverse SMA connector
can be powered via 802.3af Power over Ethernet
metal case

Summary

11x	WG302 for backbone	200€	2'200€
1x	WG302 spare part	200€	200€
4x	9dBi outdoor antenna, 15m (45ft) cable	150€	600€
5x	WAP54G for AP clients	60€	300€
1x	WAP54G spare part	60€	60€
	Total		3360€

I can help out with approx 10 WRT54GS Accesspoints, which work very stable. -- Joerg.Hoh 30 June 2005 14:10 (UTC)

Switch placement

Gartenhaus
1x	8port in 1st floor	Netgear FS108	40€	40€
1x	16port in the basement	Netgear FS116	100€	100€
Terassensaal
3x	8port in different corners of the room	Netgear FS108	40€	120€
Conference building
3x	8port in each seminar room (1st floor)	Netgear FS108	40€	120€
1x	8port PoE switch in the lobby (1st floor)	Netgear FS108P	100€	100€
2x	8port in different corners of Kleiner Saal (2nd floor)	Netgear FS108	40€	120€
1x	8port in the lobby (2nd floor)	Netgear FS108	40€	40€
1x	16port inside Grosser Saal (3rd floor)	Netgear FS116	100€	100€
3x	8port inside Grosser Saal, different corners (3rd floor)	Netgear FS108	40€	120€
1x	8port PoE switch in the Lobby (3rd floor)	Netgear FS108P	100€	100€
1x	8port in the lobby (4th floor)	Netgear FS108	40€	40€
Spare parts
1x		Netgear FS108	40€	40€
1x		Netgear FS108P	100€	100€
1x		Netgear FS116	100€	100€
	Total			1240€

Shopping list

Product	Count	price/1	total	CSV	Mindfactory
Netgear FS116	3	100€	300€	175,77€	-
Netgear FS108	15	40€	600€	-	453,60€
Netgear FS108P	3	100€	300€	-	263,64€
Netgear WG302	12	200€	2'400€	2'251,20€	-
9dBi outdoor antenna, 15m (45ft) cable	4	150€	600€
LinkSys WAP54G	6	60€	360€	338,34€	-
Total			4'560€	2'765,31€	717,24€

Other computing devices

2 wireless laptops for registration/checkin

German Verein has two apple notebooks -- JV

In need of

1 computer per presentation room

for freematrix radio to broadcast to all who can't attend -- Apple

You'll get one for Großer Saal and one for Kleiner Saal. -- JeLuF 19:20, 13 July 2005 (UTC)

Network map

Click to enlarge

Campus

Conference building

Questions

What kind of internet connection do we get?
- 10 Mb/s bidirectional microwave from Broadnet.
Where is the internet connection located in the HdJ?
- On the roof. We'll have to zap the signal from there to the Gartenhaus NOC, then branch off from there.
  - Is it possible to use a cable (copper/fibre) for this? Even if you have direct sight, you may have problems. Beside the problem, that some people use by accident that connection with their notebooks.
    - The NOC will be in a separate building several yards away, and the antenna a few stories up, so no. As usual with this sort of setup, the wireless link will be isolated, directional, and WPA-encrypted.
Do we really want to have a wireless backbone?
- Yes.
  - I made a really good experience with cable-bound backbones. Yes, it requires time and equipment to setup, but cable doesn't make a problem. No microwave disturbing the frequencies, no shielded windows, no metal. And in every case you'll have enough internal bandwidth.
    - Wired connections are obviously superior in every respect except their need for wires. Were the HdJ already wired for ethernet, things would be very different, but we have to deal with what we have. The setup we have planned is not at all uncommon, and was decided upon after months of careful consideration and discussion.