QoS Policies on Autonomous APs

So after some digging, I think I might have this figured out.

The AP config guide has a section on giving priority to Voice traffic, but it doesn't show the CLI alternative to the GUI configuration section in the guide:
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points, 12.2(13)JA
Giving Priority to Voice Traffic
The 7921 Deployment guide only gives you the CLI commands "

Voice over Wireless LAN 4.1 Design Guide - auto-qos notes

Infrastructure QoS Configuration


"This section shows sample QoS configurations for switch interfaces used in the campus network. More configuration details for all the switches and routers used in this design guide is available in theAppendix , "Voice over WLAN Campus Test Architecture," testing section of this guide.
Table 10-2 shows interface commands on a Cisco 3750G access-layer switch used

QoS commands from the 7921 deployment guide

QoS Commands for Autonomous Access Points

class-map match-all RTP
 match ip dscp ef
class-map match-all SCCP
 match ip dscp cs3

policy-map Voice
 class RTP
 set cos 6
class SCCP
 set cos 3

interface X
 service-policy input Voice
 service-policy output voice

IOS Router inerface to map RTP and SCCP correctly

ip access-list extended SCCP
 permit tcp any eq 2000 any
 permit tcp any any eq 2000

Autonomous Bridge Link with multiple VLANs

So I did some digging just now to find a document from Cisco's site that covers a bridge link with multiple VLANs, and what do you know - I found a doc that I hadn't ever seen before.

Using VLANs with Cisco Aironet Wireless Equipment 


I knew I was in the right place when I saw this network diagram: LINK 


Important notes from this document:

When you install access points, only assign the

Audio Notes

Don't know if *anyone* will find this of any value.. but I made some audio tracks on Cisco/WLAN/Voice/QoS to listen to this week.. My weak spots is definitely WLAN QoS - so since I have some long car trips coming up next week, I thought I'd put that time to good use.  Link to the MP3s: http://bit.ly/cFz7wU
It isn't a podcast, just me reading through the 7921 deployment guide (which was written

Color coded QoS chart from the Voice over Wireless LAN 4.1 Design Guide

I like the QoS  charts that are in this chapter of the design guide, but the chart runs of the page and isn't color coded like the nice QoS charts from Cisco Live BRKRST-2500 Campus QoS Design.




The LWAPP AP and WLC perform QoS baseline conversion, so that WMM values as shown below are mapped to the appropriate QoS baseline DSCP values, rather than the IEEE values.


From ccie(w)

In cases

Configuring Access Layer QoS for Voice on Cisco Catalyst 6500 with Cisco IOS SW

mls qos
! -- turns QOS on for the whole switch
mls qos map cos-dscp 0 8 16 24 32 46 48 54
! -- maps COS to DSCP using the new standards of CS3 for signaling.
interface fastethernet 5/1
! -- the interface of course
switchport mode access
! -- disable trunking
switchport voice vlan 111
! -- enable trunking when CDP detects a phone. This is called DTP or Dynamic Trunking Protocol.
switchport access

CCIE Wireless Lab Exam Topics (Blueprint) (as of 12/9/09)

Exam Sections and Sub-task Objectives   
   
1    Implement network infrastructure to support WLANs
1.01    Implement Catalyst configuration (VLANs, VTP, STP, Trunk, Portchannel,LB..)
1.02    Implement network connectivity in WLC
1.03    Implement network connectivity in LAP (local mode, hreap + local switching)
1.04    Implement network connectivity in AP (multiple vlans, vs single vlan)
1.05

792X and Client Roaming

[notes]
Client roaming – values are communicated to CCX compliant clients.  may be a little low for a VoWLAN deployment, as VoWLAN cell sizes are usually smaller.

Voice call admission control – default value for Max Bandwidh = 75%

For best performance, the most accurate assessment of call capacity; Load Based AC should be enabled.
    Max RF Reservation should not be greater than 60% - set at

VoWLAN Design Guide 4.1

[notes]
VoWLAN Design Guide 4.1



U-APSD – the primary benefit is that it allows the voice client to synchronize the transmit and receive of voice frames with the AP, thereby allowing the client to go into power-save mode between the transmit and receive of each voice frame tuple.


The use of U-APSD allows the use of long DTIM intervals to maximize standby time without sacrificing call quality

VoWLAN

[notes]
VoWLAN



Recommendation to place all antennas 1 to 2 wavelengths from highly reflective surfaces.
2.4Ghz = 4.92 inches (12.5 cm)


5GHz = 2.36 inches (6 cm)

The human head and body attenuates 5db of RF signal
If the antenna is in the body of the phone, the loss ~ 4db – 9db

Handsets do not have diversity antennas due to the length of the 2.4ghz wavelength distance (4.92in)


802.11A

Client Power, Best Practices, Channel Topology & Range

[notes]
Client power should be adjusted to match the AP power settings.
Maintaining a higher setting on the client does not result in higher performance and it can cause interference in nearby cells.

Antennas give the WLAN three fundamental properties:
     gain
     direction
     polarization

Best Practices:
  Number of users per AP 15-25 (data only)

RF Power Terminology

[notes]
dB - attenuation/amplification of the power level - expressed as the base 10 logarithm of the ratio of the power of two signals, as shown here:
dB = 10 x Log10 (P1/P2)
dBi - power gain rating of antennas
dBm - uses same calculations as dB, but has a reference value of 1mW.  Can also describe receiver sensitivity in -dBm.

Data networks: AP separation of 120-130 feet
Voice networks: cell

CCIE Wireless - Lab Exam Reading List

I have a feeling that the most useful documents in this reading list are going to be the Cisco design guides, and configuration guides. The Amazon reviews for the books recommended lean toward the information in the books being rather outdated (of course the IEEE standards book isn't outdated - it's a *standard*)

The Cisco Product Documentation will be available while taking the lab, but it is

My trouble spots

From the CCIE Wireless Lab Exam Blueprint v1.0 (login required)

I already know my trouble spots are these:
Implement network infrastructure to support WLANs
Implement QoS to support voice services over the switching infrastructure
Implment Autonomous Infrastructure
Configure WDS
Implement association filters
Implement multicast settings
Implement QoS
Implement Unified Infrastructure
Implement