The Next Generation Wireless

The Next Generation Wireless

Yuri KolomiyetsNetwork Services

Information Systems and Technology

WatITis | Life After 50 | December 4, 2007 | The Next Generation Wireless

Current Wireless Network

Complete indoor coverage of campus Hardware: Avaya Access Points (Fat) 802.11g everywhere with data rates up to 54Mbps Management: Airwave Management Platform Authentication: Network Authentication Appliance


Access Point management

Airwave Management Platform Allows to monitor, configure and manage access

points Has rogue detection capabilities Collects statistics Supports multiple vendors/platforms


Access Point management

Problems with Airwave Not 100% support of all features Lots of false positives by Rogue Detection Poor distributed management capabilities


Authentication Gateways

Network Authentication Appliances (aka. NAAs) Developed by Bruce Campbell <bruce@ist> Gateways (routers) for wireless subnets 3 in IST, 1 in ARTS, 2 in ENG, 1 in ARC Run on FreeBSD Control authentication, security and traffic shaping Also used for wired access where required


Authentication Gateways

Custom functionality Captive portal authentication Client-only firewall rules TTTS (Toilet tank traffic shaping) MinUWet

developed by Erick Engelke <erick@engmail> Windows XP SP2 only Failed health check results in access restrictions

Printing capabilities (in ENG)


Architecture Overview

Core NAA Constituency switch/router Access points Clients AP management vlans Client vlans trunked to NAA Routed links

Management Wireless

ProCurveSwitch 6200ylJ8992A

Power

Fault

StatusLED

ModeActFan

Test

RPS

Reset Clear

Mdl

Tmp

Usr

Mini-GBIC / SFP Ports - use only ProCurve-authorized devices

Auxiliary Port

Status of the Back Link Mode

Link Mode 22

21

24

23

20181614

19171513

121086

11975

42

31Link Mode

Link ModeConsole

Link Mode

Link Mode

ProCurve NetworkingHP Innovation

SiSi


Problems with physical infrastructure After initial survey no way to determine gaps in

coverage No dynamic power/channel adjustment Poor load balancing No physical layer security (Open access)


Problems with NAAs Need to be inline with client traffic

Currently can only be done with VLAN trunking Very complicated (messy) design

Not very scalable architecture No redundancy Inefficient use of IP address space No synchronization between NAAs No roaming Buggy


Usage statistics


Next generation

RFP 07-53 awarded to Aruba 3rd generation Architecture (Thin APs + controller) Complete overall solution from a single vendor

Except health check

Built-in firewall Application aware

Extensible


New Architecture

Aruba Wireless Controller Aruba APs No need for trunking Wireless traffic tunnelled

from AP to controller Wired traffic goes through

tunneller (wired AP) NAA is replaced with Aruba

WIRELESS NETWORKS

SLOT2

SLOT0Ar

uba

6000

FANSTATUS

O

I

O.T.P

DC OK

AC OK

61

PWR ACT

LINK

ProCurveSwitch 6200ylJ8992A

Power

Fault

StatusLED

ModeActFan

Test

RPS

Reset Clear

Mdl

Tmp

Usr

Mini-GBIC / SFP Ports - use only ProCurve-authorized devices

Auxiliary Port

Status of the Back Link Mode

Link Mode 22

21

24

23

20181614

19171513

121086

11975

42

31Link Mode

Link ModeConsole

Link Mode

Link Mode

ProCurve NetworkingHP Innovation

SiSi

ARUBA 2400

POWER

STATUS

WIRELESS NETWORKS

SERIAL

ACCESSPOINT

STATUS

18

19

17

16

22

23

21

20

ACT

ACCESSPOINT

STATUS

ACCESSPOINT

STATUS

0 2 4 6 8 10 12 14 16 18 20 22

1 3 5 7 9 11 13 15 17 19 21 23

10

11

9

8

14

15

13

12

2

3

1

0

6

7

5

4

LNK/ACT

POE LNK/ACT

POE LNK/ACT

POE 24 25

Link/ACTLink/


Aruba is #UNO !!!1

More powerful access points Automatic channel/power adjustment

Effective high density deployment

Full roaming capabilities (L2 and L3) Rogue monitoring and mitigation Uniform use of IP space with Vlan Pooling NO BUGS !!!!


Deployment

Deployed 10 APs in MC 645 to go 3 controllers in N+1 redundant mode Authentication will be moved to Aruba

Minimum change in appearance Routing will be moved to HP DHCP will move to NS1 and NS2 minUWet to be implemented by Erick TTTS to be implemented by Aruba or Erick


Aruba Interface


Future

Complete coverage in residences Wired control for ResNet moving to Aruba Outdoor coverage 802.1x authentication Guest provisioning Remote APs


n Questions??

n Thank you.

Documents

The Next Generation Wireless