Mobile Metrics. SUNY Technology Conference Bill Kramp. Copyright 2012 William D. Kramp All Rights Reserved

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Mobile Metrics SUNY Technology Conference 2012 Bill

2 Metrics Throughput Examples Open Source Tools Latency Examples Open Source Tools Commercial Tools Agenda

3 Metrics An analytical measurement intended to quantify the state of a system.

4 Mobile Metrics of Interest Throughput Latency Client Activity Security

5 Problems with Wireless Resource contention AP s Controllers Interference Co-channel: AP s Clients Environment Attenuation

6 Throughput

7 Throughput Monitoring Tools Iperf Jperf Zap

8 Zap from Ruckus Wireless Throughput testing for wireless networks. Average throughput results. Worst-case throughput as percentiles wireless_network_perf_bp.pdf

9 Zap results

10 Throughput Zap Fields Median (50%) Cumulative Avg 95 percentile Peak (0%) 99.9 percentile

11 Controller Client Dashboard

12 Zap Client Stat s

13 Zap Software Source code OS X Binaries zap_mac_ zip Windows Binaries zap_install_ zip

14 ZapPerf App

15 ZapPerf Graph

16 Using Zap (for free) Zap daemon (zapd) needs to be executed on both ends. $./zapd & [1] /zapd version 1.83, Copyright (C) Ruckus Wireless, Inc.Built Jan at 17:20:04 Zap client is then started with src and dst. $./zap -s d /zap version 1.83, Copyright ( C ) Ruckus Wireless, Inc. All Rights Reserved.Built Jan at 17:20:03Engaging default options -p n1000 -l1472 -q0x0

17 Latency

18 Smokeping Measures latency to networked devices: Pings HTTP DNS Other Understand wireless impact of: Large numbers of clients using a single AP Data transfers on a overloading an AP Controllers and environment with response times

19 Traditional Smokeping Latency

20 Wireless Latency Metrics

21 Baseline Wired Latency

22 Wireless Latency

23 Wired vs Wireless Latency

24 Controller Client Dashboard

25 Smokeping Slave Client Stat s

26 Reasons for Latency Wireless overhead Shared medium AP s Controllers

27 Network Diagram

28 Remote Access Point (RAP)

29 Remote Wireless Latency

30 Campus vs Remote Latency

31 VPN Latency What was the root cause?

32 Source of Remote Latency

33 NetStumbler of Remote SSID s

34 Smokeping Requirements Software: Hardware: Server (hard wired) Wireless Laptop Smokeping has to be installed on both devices.

35 Smokeping Server Settings Slaves file slave-secrets.conf file Targets file

36 *** Slaves *** # Slaves file ## make sure this is not world-readable! secrets=/etc/smokeping/slave-secrets.conf # +DellMini display_name=dell-mini color=0000ff

37 Slave-secrets.conf file DellMini:LongStringOfTextNoSpaces

38 Targets file (sub-section) +++ FLCC slaves = DellMini menu = title = HTTP Latency for host =

39 Laptop Configuration 1. Install smokeping 2. Start smokeping as a slave

40 StartSlave.sh Script #!/bin/sh # /usr/sbin/smokeping --masterurl= smokeping.cgi \ --cache-dir=/var/smokeping \ --shared-secret=/etc/smokeping/secret.txt \ --slave-name=dellmini

41 Commercial Tools Aruba AirWave Cisco Wireless Network Management Enterasys Wireless Management Suite Fluke AirMagnet Suite HP Wireless Services Manager

42 AirWave

43 AirWave RF Health Report

44 RF Health for 5GHz Radios

45 AirWave Device Summary

46 Max # Simultaneous Clients Top two lines are the wireless controllers

47 Most Utilized by Usage Top two lines the wireless controllers

48 AirWave Clients

49 Client Types

50 Zap Client Detail

51 Zap Client Usage

52 Zap Client Speed

53 Smokeping/Zap Access Point

54 AP Network Interfaces

55 AP Connected Clients

56 AirWave AMP Alert Summary

57 AMP Alerts

58 AMP Alert: Device Client Count (CDG Cafe1-AP125) Device Client Count: Client Count >= 20 for 30 minsseverity: NormalTime: Thu Apr 19 12:43: Device: CDG Cafe1-AP125

59 AMP Alert: Channel Utilization (WAP-B418) Channel Utilization: Time Busy (%) >= 75% for 30 minsseverity: NormalTime: Mon Feb 6 14:32: Device: WAP- B418 (radio bgn)

60 Heatmap of Rogue AP

61 Wired Rogue AP Detected

62 Reasons for Mobile Metrics Understanding your wireless network. Helps in troubleshooting problems. Establishes baselines for growth. Detects threats to the network.

63 Questions?

Monitoring Dashboard. Figure 1: Monitoring Dashboard

Monitoring Dashboard. Figure 1: Monitoring Dashboard , on page 1 Network Summary, on page 4 Rogues, on page 5 Interferers, on page 5 Wireless Dashboard, on page 5 Best Practices, on page 6 Cisco Wireless Controller can be accessed using two modes Command