how to - smart rf wing 5 v1.6 final

Configuration Guide for RFMS 3.0 Initial Configuration XXX-XXXXXX-XX

Wi-NG 5 How-To Guide Smart RF

[Jan] 2011

Revision [1.6]

MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office.

Symbol is a registered trademark of Symbol Technologies, Inc. All other product or service names are the property of their respective owners.

© 2009 Motorola, Inc. All rights reserved

Contents 1. Introduction:........................................................................................................................................... 5

1.1.1 Failures Covered by Smart-RF WING 5.0: ........................................................................... 5

1.1.2 New Additions & Changes .................................................................................................... 5

2. Key Concepts ........................................................................................................................................ 6

2.1.1 Wi-NG 5 Key Concepts ......................................................................................................... 6

2.1.2 Smart-RF Key concepts ........................................................................................................ 7

3. Smart-RF Operation .............................................................................................................................. 7

3.1.1 Smart-RF Calibration: ........................................................................................................... 7

3.1.2 Advantages of a separate calibration phase ......................................................................... 8

3.1.3 Calibration Sequence of Events ............................................................................................ 8

3.1.4 Smart-RF monitoring phase: ................................................................................................. 9

4. Self-Healing Features ......................................................................................................................... 10

4.1.1 Interference recovery .......................................................................................................... 11

4.1.2 Neighbor Recovery.............................................................................................................. 12

4.1.3 Coverage-hole recovery ...................................................................................................... 13

4.1.4 Smart-RF on newly adopted APs ........................................................................................ 14

5. Pre-Requisites: .................................................................................................................................... 14

5.1.1 Requirements: ..................................................................................................................... 14

5.1.2 Components Used:.............................................................................................................. 15

6. Configuration: ...................................................................................................................................... 15

6.1.1 Smart RF Settings: .............................................................................................................. 15

6.1.2 Smart-RF Policy – show context include-factory ................................................................ 16

6.1.3 Smart RF Global Commands .............................................................................................. 19

6.1.4 Configurable Parameters .................................................................................................... 20

6.1.5 Show commands ................................................................................................................. 21

6.1.6 Service commands .............................................................................................................. 21

6.1.7 Interactive Calibration ......................................................................................................... 21

6.1.8 Manual Calibration .............................................................................................................. 22

7. Verification: .......................................................................................................................................... 23

7.1.1 Channel distribution ............................................................................................................ 23

7.1.2 Neighbor Radio Failure: ...................................................................................................... 23

7.1.3 Interference: ........................................................................................................................ 24

8. Configurations used: ........................................................................................................................... 24

8.1.1 RFS Configuration ............................................................................................................... 24

Wi-NG 5 How-To Guide – Smart RF

9. Network Topology ............................................................................................................................... 30


1. Introduction:

Self-Monitoring At Run Time RF Management (Smart RF) can dramatically reduce the time and cost of new deployments by scanning the RF environment and automatically determining the best channel and transmit power for Access Points (AP). Smart-RF has the following benefits:

Figure 1 – Smart RF Benefits

1.1.1 Failures Covered by Smart-RF WING 5.0:

AP failure – Radio is not transmitting or is defective. Covered by neighbor recovery mechanism.

Antenna fall off – would result in signal change, it is detected and fixed by neighbor recovery.

Changes in environment, such as metal rack – would result in signal change. It is detected and fixed by neighbor recovery and coverage hole recovery.

Changes in external radio interference covered by interference recovery

AP-to-AP interference – results in excessive retries and covered by neighbor recovery and interference recovery

Static interference from microwave or radio jammer – covered by interference recovery

Coverage holes in the network, detected and fixed by coverage hole recovery.

1.1.2 New Additions & Changes

Previous versions were dependent on a Motorola RFS series controller. Wi-NG 5 pushes this service to the edge for remote and standalone deployments. This approach provides a competitive advantage in:

Small deployments where: o No controller is physically onsite, o Standalone AP deployments

Medium or large deployments where: o APs are distributed between multiple floors, o APs are managed by multiple RF Switches o APs are managed remotely.

Smart RF is supported on all Wi-NG 5 devices:

RFS4000, RFS6000, RFS7000 Series RF-Switches

AP650 Series, AP7131 Series and AP6511 APs in standalone or clustered environments


Smart RF in Wi-NG 5 has these additional enhancements:

Smart-RF Master is no longer restricted to an RFS series switch it can now be a site survivable AP

New off-channel-scan mode where the AP can go off channel

AP radios calculate interference & noise on each channel and send information to the Smart-Master

Smart-RF no longer waits for a scheduled calibration to solve problems like an antenna falling off or excessive interference

Smart-RF no longer needs dedicated detectors in place for Smart-RF with Motorola‟s new off channel scan mode

The calibration phase is no longer absolutely required as of Wing 5.0 if RFS based WIPS and Rogue AP services will not be running – The calibration phase reduces the time taken to arrive at the most optimum RF settings

Smart-RF can effectively perform with as few as 1 AP o Neighbor Recovery requires 4 or more APs

Multiple Smart-RF policies can be created and run

A proper site survey is always recommended for best results. Physics cannot be ignored nor the realities of scheduling and resources therefor Smart-RF hopes to compensate when no site survey is available. Smart RF cannot compensate for a poorly planned design or deployments where APs that have been incorrectly placed.

2. Key Concepts

2.1.1 Wi-NG 5 Key Concepts

All APs whether thick or thin are adaptive, the services they provide can be done without constant communication to the RFS (Motorola Radio Frequency Switch often referred to in the industry as a controller).

All APs can bridge traffic locally

All APs can provide services at the edge independent of the controller. o Only one service is dependent on an RFS which is the Advanced WIPS function. Basic

WIPS is capable of functioning on all other deployment models independent of a RFS o All other services are capable of running on an AP thick or thin.

Cisco and Aruba both claim services at the edge but in reality can only provide local bridging and may require a license to be deployed remotely. Call them out and disconnect their controller and watch all of their services fail.

Whether or not the AP is thick or thin is irrelevant when it comes to services the AP is capable of providing independent of the RFS The difference between a Thick and Thin AP is whether it can be deployed independent of the RFS. The traditional Thick AP can be deployed independent of the controller and will be able to provide the same services the RFS can provide in a limited deployment. Management will be provided by ADSP in larger deployments. The traditional Thick AP will all have L2 adoption capabilities as well as being able to operate without an IP address. They will all be adoptable to an RFS. They will all be capable of running as a Virtual controller. Thin APs cannot be deployed independent of the controller. Some SKUs are not site survivable in the event of loss of connectivity to the RFS. Some SKUs will be site survivable.


They can now: Perform services without constant communication to an RFS Bridge traffic locally Have their own configuration and can be connected to directly via SSH and telnet. If it has been deployed without an IP address there are still mechanisms to connect to the APs CLI directly via the RFS.

2.1.2 Smart-RF Key concepts

Smart-RF will always have a Master per RF-domain

Smart-Master – The Smart-Master aggregates data and makes decisions for Smart- Clients

For Smart-RF, there is always one and only one master device in a cluster of Wi-NG 5 devices in an RF-domain. Each time the cluster changes, there will be a master selection in the newly established cluster. In Wi-NG 5 APs now have the ability to become a virtual controller and are capable of performing the role of Master device in an RF-domain and as such you could temporarily have a cluster consisting of APs providing the APs are of a site survivable SKU. The newly selected master would not have the same information as the old master. For this reason, the calibrated RF parameters are always saved on its corresponding Smart-Clients. In a remote deployment of APs if connectivity to an RFS is lost an election will take place and one of the APs will be elected the Smart-Master.

Smart-Client (this will be a Wi-NG 5 device with a radio interface module(RIM) – Smart-Clients process

data and send the information up to the Smart-Master

Smart-Clients use off channel scanning to collect information about the RF environment, they then send the information to the Smart-Master. The Smart-Master then calculates best power and channel for the given radio and updates the Smart-Client. The Smart-Client reports three things to the Smart-Master.

Maximum received RSSI value from his Neighbors

An external interference report for each channel

A noise report for each channel The work flow for the Smart-RF is as follows:

User selects to do a Smart-RF calibration (either manually or automatically when first configured).

The Smart-Master device receives this request and clears the old Smart-RF configuration data.

The Smart-Master does a data collection via the Smart-Clients and makes new assignments.

The Smart-Master device pushes the assignment result to the Smart-Clients. Each Smart-Client saves the RF parameters and makes the necessary configurations for its radios.

Smart-RF Management consists of two main phases:

Smart-RF calibration phase

Smart-RF monitoring phase

3. Smart-RF Operation

3.1.1 Smart-RF Calibration:

Smart-RF calibration can be initiated by the network admin during the initial deployment or can be run any time a recalibration of the network is required. Generally manual calibration is not needed. Calibration is triggered initially when enabled. Manual calibration may be desired when a major network change has occurred such as a large number of APs being introduced. It can be instructed to run on the entire network or run on a specified subset of radios adopted by the cluster. It instructs all adopted AP radios to scan all the legal channels and measures the signal strength from each AP radio as well as the signal strength from the environment which in turn will:


Automatically choose AP radios to be detectors for WIPS and Rogue-AP.

Automatically assign channels to AP radios to avoid channel overlap and avoid interference from external RF sources.

Automatically assign transmit power of AP radios.

Figure 2 - Calibration

During calibration the network is only collecting data for the purpose of selecting WIPS and Rogue AP sensors and the best possible power and channel combinations for AP radios. The calibration phase is no longer required as of Wing 5.0 if WIPS and Rogue AP services will not be running as the WIPS and Rogue AP detectors offer minimum benefit to Smart-RF. The algorithms applied to arrive at optimal power and channel selection are the same as the monitoring phase.

3.1.2 Advantages of a separate calibration phase

Allows user to calibrate and arrive at best power and channel assignments at will. Monitoring can take many minutes to arrive at the optimum RF parameters, whereas with calibration it can be arrived at in seconds. This can be vital when first initializing your network especially if there had been no proper site survey or after changes like massive addition or deletion of APs

Allows Smart-RF to decide on dedicated WIPS / Rogue AP detectors. The assignment of detectors is only possible during the calibration phase and not during monitoring phase

Allows users for a one time calibration of the network and disabling monitoring if they choose to do so.

Allows users to simulate calibration and compare the current smart-rf configuration and apply it if they choose to do so.

3.1.3 Calibration Sequence of Events

3.1.3.1 Data collection phase

The Smart-Master decides the list of channels and power on which calibration has to be done based on the configuration of channel scan selection.

The Smart-Master sends a “Start calibration” message to all Smart-Clients with details on: o Start time o Channel list o Dwell time (the duration for which collection has to happen on a particular channel) o Guard interval (interval to stop all processing before a channel switch) o Start and end power (Power to begin and end calibration)

All Smart-Clients start calibrating at the synchronized start time then switch to different channels and power. Smart-Clients process the collected proximity report and find the maximum receive


RSSI strength and channel of each neighbor. It also collects information about external interference and noise on each channel.

Figure 3 - Calibration

The Smart-Client sends processed information to the Smart-Master.

The Smart-Client restores to previous working RF set.

The total time taken for calibration will be based on the number of configured channels to scan and number of Smart-Clients

The Smart-Master assigns o WIPS and Rogue AP sensors if enabled

The smart-rf sensor assignment works on the assumption that radios with the highest number of neighbors and higher associability usually make the best sensors. A single sensor can take care of covering both 2.4 and 5 GHz bands and handles the area covered by its neighboring radios. Sensors are assigned to make sure all radios are covered efficiently

o Channel and Power Assignments include optimal channel & power for all radios and sensor assignment if enabled.

The Smart-Master sends the configuration to all Smart-Clients.

The Smart-Clients apply the new configuration; update neighbor list and proximity entries.

3.1.4 Smart-RF monitoring phase:

If enabled the Smart-RF Monitor phase is always running. It starts with the following monitoring activities:

Monitors the attenuation of neighboring radios at a given radio and adjusts power levels as required to ensure best possible coverage with the least possible interference.

Monitors for interference o External interference from:

non 802.11 sources 802.11 from neighboring networks

o Internal interference from:


Neighboring radios belonging to our network, Noise on all allowed Smart-RF channels and assigns the best possible channel

at run time.

Monitors coverage holes by tracking MU‟s signal to noise ratio o Fixes coverage holes by increasing transmit power of the radio to which the MU is

associated to keep the MU under the desired coverage rate. Once the Smart-Master pushes the configuration down to the Smart-Clients all radios are reconfigured with the new information. Smart-Clients manage all radios for monitoring purposes.

All radio‟s periodically go off-channel based on configuration. As soon as the radio goes off channel it transmits a special Smart-RF probe request with a Motorola specific element which has details on:

o Current channel, o Transmitted channel and master mint address o This probe will be received by neighbors and they can keep track of current signal

strength from the particular radio thereby monitoring that radio. The radios also start collecting the Smart-RF probes received from other Moto APs in the same RF Domain, beacons, data heard on the channel currently being scanned. Noise readings are also taken at that channel.

Smart-Clients send information obtained during off-channel-scan to the Smart-Master. The data sent is:

o A neighbor list with: „heard‟ signal strength Interference on each channel, Noise on each channel, No of MUs associated.

The Smart-Master periodically processes the runtime information that Smart-Clients send, The Smart-Master detects anomalies and takes actions such as increasing / decreasing power and switching channels.

The Smart-ocs-monitoring feature supports:

PSP (Power Save Polling): a mechanism of power save used by MU‟s (mobile units: any wireless client)

Voice awareness. Based on the user configuration smart-ocs-monitoring may choose not to switch channels. When configured to be in strict mode, psp awareness prevents on demand scanning when any psp client is associated with the radio. Voice awareness prevents on demand scanning when a Wi-Fi phone is associated. When the configuration is set to dynamic mode, voice awareness kicks in only when a voice call is in progress. Similarly psp awareness kicks in only when data to be sent has been queued for the wireless client. Psp/voice awareness features can be completely turned off if necessary. Note: Smart-ocs-monitoring can be turned off if required from the smart-rf-policy configuration. When smart-ocs-monitoring is turned off, neighbor recovery and interference recovery features can no longer function. Coverage hole recovery is independent of smart-ocs-monitoring and will continue to function unless explicitly turned off.

4. Self-Healing Features

The Self-Healing features of Smart-RF are:

Interference Recovery

Neighbor Recovery o Requires 4 or more APs


Coverage Hole Recovery

4.1.1 Interference recovery

4.1.1.1 Scope

Channel selection

4.1.1.2 Goal

The goal of the interference recovery mechanism is to choose the channel with the least amount of interference for any given radio.

4.1.1.3 Operation

All Smart-Clients report:

Their neighbor‟s attenuation,

External interference sources

Noise on all possible smart-rf channels The Smart-Master arrives at the energy graph for each radio based on this information. The cumulative energy perceived by the radio at a given channel consists of:

Interference due to neighbors (Neighbor power and attenuation factor into this calculation)

Interference due to external APs (RSSI of beacons from neighbors factor into this calculation)

Interference due to non-Wi-Fi signals The channel with the least cumulative energy perceived by the radio is chosen as the best possible channel during calibration. During run time operations, the same data is collected and only if the difference between energy perceived at the current channel and the best possible channel exceeds a user configurable channel-switch value, does a channel change happen. The Smart-Master channel assignment algorithm also takes into account the number of neighboring radios on the same channel. Even when a particular channel is the best choice, it may not be chosen based on the number of corresponding neighbors on that particular channel. A tie breaker algorithm kicks in when too many neighboring radios end up in the same channel to choose a different channel which has the next least interference possible. The Interference recovery mechanism also keeps track of the number of wireless clients associated to a given radio and based on a user configurable value a channel switch is avoided if too many wireless clients are connected to the respective radio. Interference recovery ensures that the channels assigned only belong to the assignable channel list specified in the smart-rf-policy configuration. It also makes sure that the given channel is valid in the country in which the device is being operated before being assigned. The channel width setting is also assigned based on user preference of single width (20Mhz), dual width (40Mhz) or auto selection channel width mode (20 / 40Mhz based on whichever is optimal).


Figure 4 – Interference Recovery

4.1.2 Neighbor Recovery

4 or more APs are required for Neighbor Recovery to function.

Note 4 or more APs is required for AP Neighbor Recovery to operate.

4.1.2.1 Scope

Power - Neighboring APs loss of antenna, complete failure or blocked signal due to physical obstruction

4.1.2.2 Goal

The goal of the neighbor recovery mechanism is to arrive at the optimal power settings for any given radio.

4.1.2.3 Operation

The Smart-Master relies upon the maximum RSSI of each neighbor radio from a given radio which is reported by the Smart-Client. The Smart-Master then calculates the attenuation of all neighbors for a given radio. Based on the power-threshold configured for that radio band, it arrives at the optimum power Neighbor recovery always increases power immediately when necessary but reduction of power is done gradually in steps of 3dBm (Half the current radio power). When a power increase is necessary, it takes effect only if a power change of 3dBm or more is required. The power settings chosen by neighbor recovery mechanism ensure that the chosen power is within the limits bound by the Smart-RF policy minimum and maximum power settings. It also is bound by the regulatory specified maximum powers. Antenna gain is another configuration item that is considered while setting power for a given radio. After the optimum power is arrived, the antenna gain is factored before applying the new power. For example, if the power arrived after neighbor recovery calculation is 17dBm and the antenna gain is 3dB. The final power applied on the radio is 14dBm.


Figure 5 - Neighbor Recovery

4.1.3 Coverage-hole recovery

4.1.3.1 Scope

Power - Wireless Clients

4.1.3.2 Goal

The goal of coverage hole recovery mechanism is to change power when necessary to make sure all wireless clients can hear the radio at optimal signal strength.

4.1.3.3 Operation

Coverage-hole recovery is performed by the Smart-Client based on the SNR of all wireless clients associated to the Smart-Client Coverage-hole recovery increases or decreases power only in steps of 3dBm or more. Coverage hole recovery never decreases power below the power mandated by neighbor recovery. It can go above the power specified by neighbor recovery if necessary to perform recovery.


Figure 6 - Coverage Hole Recovery

4.1.4 Smart-RF on newly adopted APs

In Wi-NG 5.0, Smart-RF no longer needs a recalibration in order to account for newly adopted APs. APs can be added and removed from the network at will without any calibration. The newly added APs will be accounted for during the next extended scan interval. When Smart-RF is enabled and the Smart-Client does not have saved rf parameters, it sets its radios to the maximum power and chooses the default channel for the country code it is operating on. Smart-Clients always scan on the default channels looking for newly adopted APs. The newly adopted Smart-Client also scans all allowed smart-rf channels and sends reports about neighbors found to the Smart-Master. The Smart-Master builds a neighbor table for the newly adopted AP and informs all its neighbors about the presence of a new AP. The newly adopted AP ends up in the neighbor list, of all neighboring APs during the next extended scan interval. Similarly when an AP is unadopted and is no longer in use, it is aged out from the neighbor lists of all APs, and power is adjusted among its neighbors to fix coverage issues if any.

5. Pre-Requisites:

5.1.1 Requirements:

The following requirements must be met prior to attempting this configuration:

One (or more) RF Switches are installed and operational on the network.

A Windows XP or higher workstation is available with Microsoft Internet Explorer or Mozilla Firefox to perform Web UI configuration.

A telnet, ssh or terminal emulation client is installed on the workstation

An RFS or Standalone AP is configured with an RF-Domain and WLAN and is reachable via an IP address.


5.1.2 Components Used:

The information in this document is based on the following Motorola hardware and software versions:

1 RFS4000 Version 5.0

1 or more AP650s

4 or more AP650s if you want Neighbor recovery

Registered users may download the latest software and firmware from the Motorola Technical Support Site http://support.symbol.com.

Type wing 5 in the search field and click GO>

6. Configuration:

The following steps will be performed on the RF Switches to configure and enable Smart RF:

1. Create a Smart-RF policy

2. Assign the Smart-RF policy to the default RF-Domain

3. Commit the changes to the running-config and save the configuration to the startup-config

6.1.1 Smart RF Settings:

The following steps will demonstrate how to view and modify Smart RF settings using the CLI:

1. In the CLI issue the „enable„ command.

rfs4000-22E0B0>enable

2. Enter the global configuration context by issuing the „configure terminal‟ command.

rfs4000-22E0B0#configure terminal

3. Create a Smart-rf-policy by typing the keyword smart-rf-policy <smart-rf-policy-

name>

rfs4000-22E0B0(config)#smart-rf-policy smartrfhowto

4. Enable the Smart-RF-policy by typing enable

rfs4000-22E0B0(config-smart-rf-policy-smartrfhowto)#enable

5. Exit the Smart-RF policy by typing exit

rfs4000-22E0B0(config-smart-rf-policy-smartrfhowto)#exit

http://support.symbol.com/


6. Next assign the smart-rf-policy to an rf-domain policy. Enter the rf-domain context

by typing rf-domain default

rfs4000-22E0B0(config)#rf-domain default

7. Tell the default rf-domain to use the newly created smart-rf-policy with the “use”

command “use smart-rf-policy <smart-rf-policy-name>”

rfs4000-22E0B0(config-rf-domain-default)# use smart-rf-policy smartrfhowto

8. Verify your settings with the “show context” command

rfs4000-22E0B0(config-rf-domain-default)#show context

rf-domain default

location San\ Jose\ Ca

contact John\ Sellin

timezone America/Los_Angeles

country-code us

use smart-rf-policy smartrfhowto

sensor-server 1 ip 192.168.1.250

The rf-domain profile “default” is using the smart-rf-policy “smartrfhowto” as indicated by

the bolded text

6.1.2 Smart-RF Policy – show context include-factory

Default values of the Smart-RF policy can be seen by issuing the command “show context

include-factory” from within the smart-rf-policy smartrfhowto

rfs4000-22E0B0#conf t

rfs4000-22E0B0(config)#smart-rf-policy smartrfhowto

rfs4000-22E0B0(config-smart-rf-policy-smartrfhowto)#show context include-factory


smart-rf-policy smartrfhowto

enable

no group-by building

no group-by floor

no auto-assign-sensor

sensitivity medium

assignable-power 5GHz min 4

assignable-power 5GHz max 17

assignable-power 2.4GHz min 4

assignable-power 2.4GHz max 17

channel-list 5GHz

36,40,44,48,52,56,60,64,100,104,108,112,116,120,124,128,132,136,140,149,153,157,161,165

channel-list 2.4GHz 1,6,11

channel-width 5GHz 40MHz

channel-width 2.4GHz 20MHz

smart-ocs-monitoring

smart-ocs-monitoring off-channel-duration 5GHz 50

smart-ocs-monitoring off-channel-duration 2.4GHz 50

smart-ocs-monitoring frequency 5GHz 6

smart-ocs-monitoring frequency 2.4GHz 6

smart-ocs-monitoring sample-count 5GHz 5

smart-ocs-monitoring sample-count 2.4GHz 5

smart-ocs-monitoring extended-scan-frequency 5GHz 5

smart-ocs-monitoring extended-scan-frequency 2.4GHz 5

smart-ocs-monitoring power-save-aware 5GHz dynamic

smart-ocs-monitoring power-save-aware 2.4GHz dynamic

smart-ocs-monitoring voice-aware 5GHz dynamic

smart-ocs-monitoring voice-aware 2.4GHz dynamic


interference-recovery

interference-recovery noise

interference-recovery interference

interference-recovery client-threshold 50

interference-recovery channel-switch-delta 5GHz 20

interference-recovery channel-switch-delta 2.4GHz 20

neighbor-recovery

neighbor-recovery power-threshold 5GHz -70

neighbor-recovery power-threshold 2.4GHz -70

coverage-hole-recovery

coverage-hole-recovery interval 5GHz 30

coverage-hole-recovery interval 2.4GHz 30

coverage-hole-recovery coverage-interval 5GHz 10

coverage-hole-recovery coverage-interval 2.4GHz 10

coverage-hole-recovery snr-threshold 5GHz 20

coverage-hole-recovery snr-threshold 2.4GHz 20

coverage-hole-recovery client-threshold 5GHz 1

coverage-hole-recovery client-threshold 2.4GHz 1

interference-recovery channel-hold-time 3600

neighbor-recovery power-hold-time 0

The output shows all available settings and their default values. The show context command when coupled with include factory is a useful way to learn all available commands along with their default values in any given context.


6.1.3 Smart RF Global Commands

Smart RF Global Commands

Command Description

assignable-power Specify the assignable power during power-

assignment

auto-assign-sensor Allow smart-rf to select optimal sensor radios for

wips and unauthorized ap detection

channel-list Select channel list for smart-rf

channel-width Select channel width for smart-rf

coverage-hole-recovery Recover from coverage hole

Enable Enable this smart-rf policy

group-by Configure grouping parameters

interference-recovery Recover issues due to excessive noise and

interference

neighbor-recovery Recover issues due to faulty neighbor radios

No Negate a command or set its defaults

Sensitivity Configure smart-rf sensitivity (Modifies various

other smart-rf configuration items)

smart-ocs-monitoring Smart off channel scanning

Clrscr Clears the display screen

Commit Commit all changes made in this session

End End current mode and change to EXEC mode

Exit End current mode and down to previous mode

Help Description of the interactive help system

Revert Revert changes

Service Service Commands

Show Show running system information

Write Write running configuration to memory or terminal


6.1.4 Configurable Parameters

Parameter Ranges and Limits

Parameter Upper Limit Lower Limit Default Value

Max-Assignable-Power 20 4 17

Automatic sensor assignment Enable Disable Disable

Channel-width 5Ghz Auto 20Mhz 40Mhz

Channel-width 2.4Ghz Auto 20Mhz 20Mhz

Smart-ocs-monitoring Enable Disable Enable

smart-ocs-monitoring Off-channel-

duration

150 20 50

smart-ocs-monitoring frequency 120 1 6

smart-ocs-monitoring sample-count 15 1 5

smart-ocs-monitoring extended

scan frequency

50 0 5

smart-ocs-monitoring Power-save-

awareness

Strict Off Dynamic

smart-ocs-monitoring voice-

awareness

Strict Off Dynamic

Interference recovery Enable Disable Enable

Interference-recovery noise Enable Disable Enable

Interference-recovery interference Enable Disable Enable

Interference recovery client-

threshold

255 1 50

Interference recovery channel-

switch-delta

35 5 20

Interference recovery channel-hold-

time

86400 0 3600

Neighbor recovery Enable Disable Enable

neighbor-recovery power-threshold -55 -85 -70

neighbor-recovery power hold time 3600 0 0

Coverage hole recovery Enable Disable Enabled

coverage-hole-recovery interval 120 1 30

coverage-hole-recovery coverage

interval

120 1 10

coverage-hole-recovery snr- 75 1 20


threshold

coverage-hole-recovery client-

threshold

255 1 1

6.1.5 Show commands

Type show smart-rf ?

rfs4000-22E0B0#show smart-rf ?

calibration-status Display smart-rf calibration status

channel-distribution Display smart-rf channel distribution

history Display smart-rf history

interactive-calibration-config Interactive calibration configuration

radio Radio related commands

rfs4000-22E0B0#show smart-rf radio ?

AA-BB-CC-DD-EE-FF Radio Mac address in AA-BB-CC-DD-EE-FF

format, all radios if this entry is omitted

Activity Number of power / channel / coverage hole

related changes

all-11an All 11a radios currently in configuration

all-11bgn All 11bg radios currently in configuration

energy Display radio energy

neighbors All neighbors of a given radio

on On RF-Domain

6.1.6 Service commands

#service smart-rf

clear-config Clear smart-rf configuration in all devices

clear-history Clear smart-rf historyuration in all devices

interactive-calibration Interactive Smart-RF calibration

interactive-calibration-result Interactive Smart-RF calibration result

run-calibration Start a new Smart-RF calibration

stop-calibration Stop calibration that is currently in progress

6.1.7 Interactive Calibration

If a Site survey has already been performed the administrator could configure AP radios with a fixed configuration. If both the channel and power are set to fixed smart-ocs-monitoring ceases to function. If the environment were to go through changes such as a number of APs were added or removed or stock in a warehouse was added or removed the RF characteristics since the last site survey may no longer be valid.


An administrator could perform an interactive calibration. To perform an interactive calibration.

rfs4000-22E0B0#service smart-rf interactive-calibration

Calibration initiated. Must take approximately 143 seconds to complete NOTE: All wireless clients will remain disconnected during calibration. To view the results of the interactive-calibration

rfs4000-22E0B0#show smart-rf interactive-calibration-config

AP RADIO-MAC TYPE STATE ASSIGNED SENSOR OLD CH NEW CH OLD POW NEW POW

ap650-315D28 00-23-68-30-E3-C0 11an normal no 149+ 149+ 17 17 ap650-315DF8 00-23-68-30-98-E0 11bgn normal no 6 6 17 17 ap650-315DF8 00-23-68-30-98-00 11an normal no 157+ 157+ 17 17 ap650-313DE4 00-23-68-2F-75-E0 11bgn normal no 11 11 17 17 ap650-315D28 00-23-68-30-E9-E0 11bgn normal no 1 1 17 17 ap650-313DE4 00-23-68-2F-76-A0 11an normal no 36+ 36+ 17 17 ---------------------------------------------------------------------------------------------------- Total number of radios displayed: 6 To test the settings:

rfs4000-22E0B0#service smart-rf interactive-calibration-result replace-current-config

If the new configuration is desirable and you would like to lock settings in place.

This writes the channel and power settings to the configuration and locks them in place, replacing

the setting smart with actual values.

rfs4000-22E0B0#service smart-rf interactive-calibration-result write-to-configuration

If the new configuration was not desirable

rfs4000-22E0B0#service smart-rf interactive-calibration-result discard

Calibration result discarded

6.1.8 Manual Calibration

To run a manual calibration

rfs4000-22E0B0#service smart-rf run-calibration

Calibration initiated. Must take approximately 143 seconds to complete NOTE: All wireless clients will remain disconnected during calibration. rfs4000-22E0B0#show smart-rf calibration-status Calibration in progress. Waiting for results from radios 00-23-68-30-98-00 00-23-68-30-E3-C0 00-23-68-2F-76-A0 00-23-68-2F-75-E0 00-23-68-30-E9-E0 00-23-68-30-98-E0 rfs4000-22E0B0#show smart-rf history ---------------------------------------------------------------------------------------------------- TIME EVENT DESCRIPTION ----------------------------------------------------------------------------------------------------


12:24:2010 15:36:44 PST Calibration Done Calibration complete 12:24:2010 15:34:51 PST Calibration Started Calibration expected to complete in 113 secs

To stop a calibration in progress

rfs4000-22E0B0#service smart-rf stop-calibration

Calibration stopped

7. Verification:

This section demonstrates some steps that can be performed to verify that Channel distribution and the self-healing functions are working correctly.

7.1.1 Channel distribution

rfs4000-22E0B0#show smart-rf channel-distribution 2.4GHz channel distribution for 3 radios ------------------------------------- CHANNEL NUM RADIOS DISTRIBUTION (%) ------------------------------------- 1 1 33.33 6 1 33.33 11 1 33.33 ------------------------------------- 5GHz channel distribution for 3 radios ------------------------------------- CHANNEL NUM RADIOS DISTRIBUTION (%) ------------------------------------- 36+ 1 33.33 149+ 1 33.33 157+ 1 33.33 -------------------------------------

7.1.2 Neighbor Radio Failure:

rfs4000-22E0B0#show smart-rf radio on default -------------------------------------------------------------------------------- AP RADIO-MAC TYPE STATE CHANNEL POWER -------------------------------------------------------------------------------- ap650-315D28 00-23-68-30-E3-C0 11an normal 149+ 17 ap650-315DF8 00-23-68-30-98-E0 11bgn normal 6 17 ap650-315DF8 00-23-68-30-98-00 11an normal 157+ 17 ap650-313DE4 00-23-68-2F-75-E0 11bgn normal 11 17 ap650-315D28 00-23-68-30-E9-E0 11bgn normal 1 17 ap650-313DE4 00-23-68-2F-76-A0 11an normal 36+ 17 -------------------------------------------------------------------------------- Total number of radios displayed: 6 Place an AP in an isolation chamber or a large anti-static bag such as one from a mother board if no isolation chamber is available. Note: Anti-static bags make wonderful attenuators for roam testing. If testing in a very small area with APs in very close proximity to each other unplug one AP. Show smart-rf history


12:24:2010 10:03:31 PST Neighbor Recovery Radio ap650-315D28:R2 (00-23-68-30-E3-C0) power changed from 4 to 17 12:24:2010 10:03:15 PST Neighbor Recovery Radio ap650-313DE4:R2 (00-23-68-2F-76-A0) power changed from 4 to 17 12:24:2010 10:03:12 PST Neighbor Recovery Radio ap650-315DF8:R2 (00-23-68-30-98-00) power changed from 4 to 17 12:24:2010 10:00:52 PST Neighbor Recovery Radio ap650-313DE4:R1 (00-23-68-2F-75-E0) power changed from 4 to 17 12:24:2010 10:00:43 PST Neighbor Recovery Radio ap650-315D28:R1 (00-23-68-30-E9-E0) power changed from 4 to 17 12:24:2010 10:00:43 PST Interference Recovery Radio ap650-315D28:R1 (00-23-68-30-E9-E0) channel changed from 11 to 1 12:24:2010 10:00:43 PST Neighbor Recovery Radio ap650-315DF8:R1 (00-23-68-30-98-E0) power changed from 4 to 17 12:24:2010 09:59:37 PST Radio Removed Radio ap650-313DD4:R2 (00-23-68-2F-75-A0) removed 12:24:2010 09:59:37 PST Radio Removed Radio ap650-313DD4:R1 (00-23-68-2F-75-F0) removed 12:24:2010 09:59:37 PST AP Unadopted AP ap650-313DD4 unadopted

7.1.3 Interference:

Introduce interference with a signal jammer. A 2.4 or 5ghz cordless phone a baby monitor all will work well for this. rfs4000-22E0B0#show smart-rf history ---------------------------------------------------------------------------------------------------------------------------------- TIME EVENT DESCRIPTION ---------------------------------------------------------------------------------------------------------------------------------- 12:24:2010 13:48:22 PST Interference Recovery Radio ap650-315D28:R2 (00-23-68-30-E3-C0) channel changed from 44+ to 149+ 12:24:2010 12:41:58 PST Interference Recovery Radio ap650-315D28:R2 (00-23-68-30-E3-C0) channel changed from 149+ to 44+

8. Configurations used:

8.1.1 RFS Configuration

!

! Configuration of RFS4000 version 5.0.0.0-107R

!

!

version 2.0

!

!

smart-rf-policy smartrfhowto

enable

group-by building

!

wlan-qos-policy default

qos trust dscp

qos trust wmm

!

radio-qos-policy default

!


ip access-list BROADCAST-MULTICAST-CONTROL

permit tcp any any rule-precedence 10

permit udp any eq 67 any eq bootpc rule-precedence 11

deny udp any range 137 138 any range 137 138 rule-precedence 20

deny ip any 224.0.0.0/4 rule-precedence 21

deny ip any host 255.255.255.255 rule-precedence 22

permit ip any any rule-precedence 100

!

mac access-list PERMIT-ARP-AND-IPv4

permit any any type arp rule-precedence 10

permit any any type ip rule-precedence 20

!

wlan smartrfhowto

description wlan for Smart RF how to

ssid smartrfhowto

vlan 1

encryption-type ccmp

authentication-type none

inactivity-timeout 86400

wpa-wpa2 psk 0 smartrfhowto

wpa-wpa2 exclude-wpa2-tkip

wpa-wpa2 key-rotation unicast 30

wpa-wpa2 key-rotation broadcast 30

motorola-extensions wmm-load-information

client-load-balancing

ip arp trust

!

management-policy default

http server

https server

no ftp

ssh

user admin password 1

xoxoSmartrfhowtoInterestingHashedPasswordisntit?Smartrfhowtoxoxo role

superuser access all

user operator password 1


monitor access all

user jsellin password 1


superuser access all

no snmp-server manager v2

snmp-server community public ro

snmp-server user snmptrap v3 encrypted des auth md5 0 motorola

snmp-server user snmpoperator v3 encrypted des auth md5 0 operator

snmp-server user snmpmanager v3 encrypted des auth md5 0 motorola

!

firewall-policy default

!

igmp-snoop-policy default

no igmp-snooping

no querier


unknown-multicast-fwd

!

mint-security-policy the_policy

!

role-policy sdf

!

!

profile ap650 default-ap650

ip name-server 192.168.1.1

interface radio1

data-rates gn

wlan smartrfhowto bss 1 primary

aggregation amsdu tx-rx

rifs tx-rx

antenna-mode 2x2

dynamic-chain-selection

interface radio2

data-rates an

wlan smartrfhowto bss 1 primary

aggregation amsdu tx-rx

rifs tx-rx

antenna-mode 2x2

dynamic-chain-selection

interface ge1

ip dhcp trust

qos trust dscp

qos trust 802.1p

interface vlan1

ip address dhcp

ip dhcp client request options all

use management-policy default

use firewall-policy default

logging on

use bridging-policy smartrfhowto

!

profile ap7131 default-ap7131

interface radio1

interface radio2

interface radio3

interface ge1

ip dhcp trust

qos trust dscp

qos trust 802.1p

interface ge2

ip dhcp trust

qos trust dscp

qos trust 802.1p

interface vlan1

ip address dhcp



logging on


use bridging-policy default

!

profile rfs4000 default-rfs4000

autoinstall configuration

autoinstall firmware

crypto isakmp policy default

crypto ipsec transform-set default esp-aes-256 esp-sha-hmac

interface radio1

interface radio2

interface up1

ip dhcp trust

qos trust dscp

qos trust 802.1p

interface ge1

ip dhcp trust

qos trust dscp

qos trust 802.1p

interface ge2

ip dhcp trust

qos trust dscp

qos trust 802.1p

interface ge3

ip dhcp trust

qos trust dscp

qos trust 802.1p

interface ge4

ip dhcp trust

qos trust dscp

qos trust 802.1p

interface ge5

ip dhcp trust

qos trust dscp

qos trust 802.1p


logging on

use bridging-policy default

!

rf-domain default

location San\ Jose\ Ca

contact John\ Sellin

timezone America/Los_Angeles

stats open-window 1 sample-interval 5 size 3

country-code us

use smart-rf-policy smartrfhowto


!

rfs4000 00-23-68-22-E0-B0

radio-count 0

use profile default-rfs4000

use rf-domain default

hostname rfs4000-22E0B0

building home


floor 1

license AP RFS4000_DEFAULT_AP_LICENSE

license ADSEC RFS4000_DEFAULT_ADVANCED_SECURITY_LICENSE

trustpoint https homenet

no trustpoint radius-ca

trustpoint radius-server default-trustpoint

rsa-key ssh homenet


ip route 0.0.0.0/0 172.16.1.1

interface up1

interface ge1

interface ge3

switchport mode access

switchport access vlan 3000

interface ge5

switchport mode access

switchport access vlan 4000

interface vlan1

ip address 172.16.1.25/24


interface vlan3000

interface vlan4000

use management-policy default

logging on

logging console warnings

logging buffered warnings

!

ap650 00-23-68-31-3D-D4

radio-count 2

use profile default-ap650


hostname ap650-313DD4

building home

floor 1

trustpoint https default-trustpoint



rsa-key ssh default_rsa_key

!

ap650 00-23-68-31-3D-E4

radio-count 2



hostname ap650-313DE4

building home

floor 1





!

ap650 00-23-68-31-5D-28


radio-count 2



hostname ap650-315D28

building home

floor 1





!

ap650 00-23-68-31-5D-F8

radio-count 2



hostname ap650-315DF8

building home

floor 1





!

bridging-policy default

no access-point local-bridging

!

bridging-policy smartrfhowto

extended-vlan 1


!

bridging-policy smartrfhowtoo

extended-vlan 1


!

!

end


9. Network Topology

how to - smart rf wing 5 v1.6 final

Documents