1. AutoQoS Technical Presentation, 1/03
© 2002, Cisco Systems, Inc. All rights reserved. 1 1 1

2. Cisco AutoQoS Technical Presentation
Ramya Venkatraman Technical Marketing Engineer – QoS Internet Technologies Group

3. Cisco AutoQoS Framework Automation with Cisco AutoQoS
Agenda
Introduction
Cisco AutoQoS Framework
Automation with Cisco AutoQoS
AutoQoS Deployment Case Study
Summary
Introduction

4. Introduction – IETF DiffServ Architecture (RFC-2475)
A Per-Hop Behaviour (PHB) is a description of the externally observable forwarding behaviour of a DS node applied to a the set of packets with the same DSCP
PHB may be defined in terms of their resources priority relative to others PHBs or the observable traffic characteristics (delay, loss, …)
The idea: different service levels for packets
The service: some significant characteristics of packet transmission in one direction across the network
Examples: bandwidth and latency

5. A New Paradigm for Automating the Delivery of Network Quality of Service
Key Takeaways:
Simpler QoS deployments – Reduces operator errors
Cheaper QoS deployments – Up to 2/3rds reduction in cost
Faster QoS deployments – Up to 2/3rds reduction in deployment time
Cisco AutoQoS initial focus: QoS for Voice over IP
IP Telephony is here!
IP Telephony requires QoS
QoS deployment can be challenging
Cisco AutoQoS makes VoIP deployments simpler, cheaper, and faster
Cisco AutoQoS retains 100% customer control over configuration

6. Cisco QoS Introduction: A Complete Diffserv Toolkit
SWITCH
Classification (CoS, DSCP, ACLs, VLAN, Port-based)
Classification (CoS, DSCP, ACLs, VLAN, Port-based)
PROVISIONING & MONITORING
CBQoSMIB, QPM 3.0
Buffer Management & WRED
Queuing & Scheduling (WRR, PQ)
Policing & Marking (Aggregate & Micro Flow Policing)
ROUTER
Classification & Marking (DSCP, IP Precedence, nBAR, etc.)
Congestion Avoidance Mechanisms (WRED, WRED-ECN)
Traffic Conditioners (Policing, Shaping)
Congestion Management Techniques (WFQ,CBWFQ,LLQ)
Link Efficiency Mechanisms (Compression, Fragmentation)
FRAME
RELAY
PPP
HDLC
ATM GE FE

7. Cisco AutoQoS Framework Automation with Cisco AutoQoS
Agenda
Introduction
Cisco AutoQoS Framework
Automation with Cisco AutoQoS
AutoQoS Deployment Case Study
Summary
Cisco AutoQoS Framework

8. Cisco AutoQoS - VoIP Framework DiffServ Functions Automated
Automation and simplification of the existing user interface to expedite deployment of QoS features for VoIP
Fine-tuning of AutoQoS generated parameters by user, if desired
DiffServ Function
Cisco IOS QoS Feature
Behavior
Classification
NBAR
DSCP, Port
Classification of VoIP based on packet attributes or port trust
Marking
Class-Based Marking
Set L3 / L2 attributes to bucketize packets into a class
Congestion Management
% based LLQ,
WRR
Provide EF treatment to voice & BE treatment to data
Shaping
Class-based Shaping or FRTS
Shape to CIR to prevent burst & smooth Traffic to Configured Rate
Link Efficiency Mechanism
Header Compression
Reduce the VoIP bandwidth requirement
Link Fragmentation & Interleaving
Reduce jitter experienced by voice packets

9. Cisco AutoQoS Framework – Network Based Application Recognition
Citrix 25%
Netshow 15%
Fasttrack 10%
FTP 30%
HTTP 20%
Link Utilization
What Applications are running through my network?
Benefits
Identifies Layer 4 to Layer 7 applications and protocols
Stateful & deep packet inspection
Protocol Discovery analyzes application traffic patterns in real time and identifies traffic is running on the network
Platform Support
Cisco 1700, 2600, 3600, 7100, 7200, FlexWan Series Routers
Switches: MSFC support on Sup 1a & Sup 2 introduced in Release 12.1(13)E

10. Cisco AutoQoS Framework – nBAR RTP Payload Type Classification
Eases classification of voice and video traffic
VoIP, streaming / real time video, audio / video conferencing, Fax Over IP
Distinguishes between RTP packets based on payload type and CODECS
Removes dependencies on UDP Port Range & DSCP markings
CODEC
Payload Type
G.711 (Audio)
0 (mu-law) 8 (a-law)
G.721 (Audio) 2
G.722 (Audio) 9
G.723 (Audio) 4
G.728 (Audio) 15
G.729 (Audio) 18
H.261 (Video) 31
MPEG-1 (A/V)
MPEG-2 (A/V)
14 (Audio), 32 (Video), 33 (A-V)
Dynamic

11. Cisco AutoQoS Framework – Percentage Based Policies
Problems
Fixed CIR imposes scalability issues
Service policies differ by interface, with a wide range of interface bandwidths
Solution
Configure policies as a percentage of available bandwidth
Advantage
Increased Scalability & Manageability
Same Policy Map can be applied on multiple interfaces and on interfaces with varying bandwidth
Build Once, Apply Many Policies

12. Cisco AutoQoS Framework – MLPPP Link Fragmentation & Interleaving
Problem: large packets “freeze out” voice
Voice Packet
60 bytes
Every 20 ms
Voice Packet
60 bytes
Every >214 ms
Voice Packet
60 bytes
Every >214 ms
~214ms Serialization Delay
Voice
1500 Data Bytes
Voice
Voice
1500 Data Bytes
Voice
Voice
1500 Data Bytes
Voice
56kb WAN
10mbps Ethernet
10mbps Ethernet
Implemented via Multilink PPP (MLP) over FR, ATM, and leased lines
Fragments are interleaved with the real-time packets, reducing the Serialization delay experienced by Voice packets
Benefit: reduce the jitter in voice calls

13. Cisco AutoQoS Framework – RTP Header Compression
PROBLEM: Header = 2 X Payload
CODEC
PPP
6 Bytes of Header
ATM
53 Bytes Cells with
a 48 Byte Payload
Frame-Relay
4 Bytes of Header
G.711 at 50 pps
82.4 kbps
106 Kbps
81.6 kbps
G.711 at 33 pps
75.5 kbps
84 Kbps
75 kbps
G.729A at 50 pps
26.4 kbps
42.4 Kbps
25.6 kbps
G.729A at 33 pps
20 kbps
28 Kbps
19.5 kbps
BENEFIT: Reduction in Voice Bandwidth Requirement
CODEC
PPP
6 Bytes of Header
ATM
53 Bytes Cells with
a 48 Byte Payload
Frame-Relay
4 Bytes of Header
G.711 at 50 pps
68 kbps
N/A
67 kbps
G.711 at 33 pps
66 kbps
65.5 kbps
G.729A at 50 pps
12 kbps
11.2 kbps
G.729A at 33 pps
10.5 kbps
10 kbps

14. Cisco AutoQoS Framework Automation with Cisco AutoQoS
Agenda
Introduction
Cisco AutoQoS Framework
Automation with Cisco AutoQoS
AutoQoS Deployment Case Study
Summary
Automation with Cisco AutoQoS

15. Automation with Cisco AutoQoS – VoIP Intelligence in the LAN
Building
Building
Building
Access
Layer 2 Switch
Distribution
Layer 3 Switch
Core
Layer 3 Switched
Backbone
Server Farm
Server Farm
Enable Trust boundary (phone, access, uplink/downlink)
Enable Priority Queuing where required
Modify Queue Admission criteria where required
Configure CoS to DSCP and IP Prec to DSCP maps where required

16. Automation with Cisco AutoQoS – VoIP Intelligence in the WAN
125 Remote Sites
Build MQC based policies for VoIP
Intelligent Classification (Trust / Untrust)
High Speed & Low Speed QoS Policies
Automatically enable QoS features specific to underlying transport protocol (FR, ATM, PPP, FR-to-ATM)
Enable Traffic Shaping where required
Enable LFI (FRF.12, MLP) where required
Enable CRTP
Monitoring & SNMP Alerts

17. Cisco AutoQoS Benefits Router Platforms
Cisco 2600, 2600-XM, 3600, 3700, and 7200 Series Routers
User can meet the voice QoS requirements without extensive knowledge about:
Underlying technologies (i.e.: PPP, FR, ATM)
Service policies
Link efficiency mechanisms
AutoQoS lends itself to tuning of all generated parameters & configurations

18. Automation with Cisco AutoQoS Router Platforms
Supported on serial (PPP & HDLC), ATM PVCs, FR DLCIs and FR/ATM links
Only on point-to-point sub-interfaces for FR and low speed ATM PVCs
Policies are specific to underlying transport layer protocol
Automatically identifies H.323, MGCP, H.225 (Unicast), SIP and Skinny Signaling Protocols
Command Line Interface
auto qos voip [trust] – Untrusted Mode by default
auto qos voip [fr-atm] – Enabled on FR DLCI for FR/ATM Interworking

19. Automation with Cisco AutoQoS Router Platforms (Cont)
Classification
Trust: relies on DSCP markings from switches (DSCP EF & AF31)
Un trust: nBAR RTP Payload Type Classification & Access Lists
Provisioning
LLQ protects voice bearer and voice signaling traffic
WFQ shares bandwidth fairly in the Best Effort Data class
Policy Generation
Enables high- (>768Kbps) and low- (<=768Kbps) speed QoS
Monitoring
SNMP monitoring events are reported if the SNMP server is enabled
Thresholds activated in RMON alarm table to monitor LLQ drops
The bandwidth of the serial interface determines the speed of the link. The speed of the link in turn determines the template generated by the AutoQoS - VoIP feature. Changing the bandwidth after configuring the AutoQoS - VoIP feature is not recommended. The AutoQoS - VoIP feature always considers the bandwidth at the time the feature is configured. AutoQoS - VoIP does not respond to changes made to bandwidth after the feature is configured.
For a serial interface with a low-speed link, Multilink PPP (MLP) is configured automatically. The serial interface must have an IP address. When MLP is configured, this IP address is removed and put on the MLP bundle. The AutoQoS - VoIP feature must also be configured at the other end of the link; otherwise, traffic does not go through the link.
Fragmentation size (in bytes) is determined from the link bandwidth. Bandwidth specified on both sides of the FR link must be the same inorder to avoid inconsistencies in fragment size on both sides of a connection

20. Automation with Cisco AutoQoS Router Platforms (Cont)
Without
AutoQoS
Configuring QoS for VoIP on Low Speed Frame Relay WAN Link
class-map VoIP-Bearer
match protocol rtp audio
class-map VoIP-Control
match access-group 101 !
policy-map QoS-Policy
class VoIP-Bearer
priority percent 30
set ip dscp ef
class VoIP-Control
bandwidth percent 5
set ip dscp af31
class class-default
fair-queue
Access-list 101 permit tcp any any eq \\H.323
Access-list 101 permit tcp any any range \\H.323
Access-list 101 permit udp any any eq \\MGCP
Access-list 101 permit udp any any eq \\MGCP
Access-list 101 permit tcp any any range \\ Skinny
Frame
Relay
Classify the traffic of interest for QoS Policy
Define QoS Policy Treatment
H UDP unicast 1719
SIP Server location - UDP 5060
Define ACLs to classify
VoIP Signaling

21. Automation with Cisco AutoQoS Router Platforms (Cont)
Without
AutoQoS
Enabling FRTS, FRF.12 & CRTP
Frame
Relay
interface Serial4/0
encapsulation frame-relay
frame-relay traffic-shaping !
interface Serial4/0.1 point-to-point
bandwidth 256
ip address
frame-relay interface-dlci 100
class VoIP
Frame-relay ip rtp header-compression
map-class frame-relay VoIP
frame-relay cir
frame-relay bc 2560
frame-relay be 0
frame-relay mincir
service-policy output QoS-Policy
frame-relay fragment 320
Enable Frame Relay Traffic Shaping
Apply FR class-map to DLCI
Enable RTP Header Compression
Frame Relay Traffic Shaping
Apply QoS Policy
Enable FRF.12

22. Automation with Cisco AutoQoS Router Platforms (Cont)
With AutoQoS
FRTS enabled by AutoQoS
Frame
Relay
interface Serial4/0
encapsulation frame-relay
frame-relay traffic-shaping !
interface Serial4/0.1 point-to-point
bandwidth 256
ip address
frame-relay interface-dlci 100
class AutoQoS-VoIP-FR-Serial4/0-100
auto qos voip
frame-relay ip rtp header-compression
map-class frame-relay AutoQoS-VoIP-FR-Serial4/0-100
frame-relay cir
frame-relay bc 2560
frame-relay be 0
frame-relay mincir
service-policy output AutoQoS-Policy-UnTrust
frame-relay fragment 320
You specify BW, IP Addr
& FR DLCI
You enable AutoQoS
CRTP configuration generated by AutoQoS
FRTS & FRF.12 settings generated by AutoQoS

23. Automation with Cisco AutoQoS Router Platforms (Cont)
With AutoQoS
class-map match-any AutoQoS-VoIP-RTP-Untrust
match protocol rtp audio
match access-group name AutoQoS-VOIP-RTCP
class-map AutoQoS-VoIP-Control-Untrust
match access-group name AutoQoS-VOIP-Control
class-map match-any AutoQoS-VOIP-Remark
match ip dscp ef
match ip dscp af31 !
policy-map AutoQoS-Policy-Untrust
class-map AutoQoS-VoIP-RTP-Untrust
priority percent 70
set dscp ef
class AutoQoS-VoIP-Control-Untrust
bandwidth percent 5
set dscp af31
class AutoQoS-VoIP-Remark
set dscp default
class class-default
fair-queue
Frame
Relay
Classification done by AutoQoS
Provisioning done by AutoQoS

24. Automation with Cisco AutoQoS Router Platforms (Cont)
With AutoQoS
Monitoring Drops in LLQ
Thresholds are activated in RMON alarm
table to monitor drops in Voice Class
Default drop threshold is 1bps
rmon event log trap AutoQoS description “AutoQoS
SNMP traps for Voice Drops” owner AutoQoS
rmon alarm cbQoSCMDDropBitRate
Absolute rising-threshold falling-threshold 0
Owner AutoQoS
Frame
Relay
RMON event configured generated by AutoQoS

25. Cisco AutoQoS Benefits Switch Platforms
Cisco Catalyst 6500, 4500, 3550, and 2950EI Switches
User can meet the voice QoS requirements without extensive knowledge about:
Trust boundary
CoS to DSCP mappings
Weighted Round Robin (WRR) & Priority Queue (PQ) Scheduling parameters
Generated parameters and configurations are user tunable
Automatic QoS focuses on the voice networks that are built using the Cisco IP Phone 79xx series and the Cisco SoftPhone. However, other phones can equally benefit from the automatically configured QoS settings. With automatic QoS, all appropriate QoS settings (Internet Engineering Task Force (IETF)-recommended values and proven AVVID settings) are applied to the port.

26. Automation with Cisco AutoQoS Switch Platforms
Single command at the interface level configures interface and global QoS
Support for Cisco IP Phone & Cisco Soft Phone
Support for Cisco Soft Phone currently exists only on the Cat6500
Trust Boundary is disabled when IP Phone is moved / relocated
Buffer Allocation & Egress Queuing dependent on interface type (GE/FE)
Supported on Static, dynamic-access, voice VLAN access, and trunk ports
CDP must be enabled for AutoQoS to function properly
Cisco Catalyst 2950 EI supports WRR, Strict Priority Scheduling, and Strict Priority Queuing
CiscoSoftPhone and Trust DSCP options need a PFC or a PFC 2

27. Automation with Cisco AutoQoS Switch Platforms (Cont)
Command Line Interface
Cisco Catalyst 6500 Switch
Global: set qos autoqos
Interface: set port qos autoqos <mod/port> voip [ciscosoftphone | ciscoipphone]
Trust Boundary: Set port qos autoqos <mod/port> trust [cos|dscp]
Cisco Catalyst 3550 and 2950EI Switches
auto qos voip trust – QoS Labels in ingress packets are trusted
auto qos voip Cisco-phone – Extends trust boundary if IP Phone detected
Cisco Catalyst 4500 Switch
Similar to Cat 3550/2950
CLI Syntax for 4500 will be finalized once the functional spec is ECed

28. Configuring QoS for VoIP on Trusted & Untrusted Ports in the LAN
Automation with Cisco AutoQoS Switch Platforms (Cont)
Without
AutoQoS
Configuring QoS for VoIP on Trusted & Untrusted Ports in the LAN
6500
set qos enable
set port qos mod/port cos 0
set port qos mod/port cos-ext 0
set port qos mod/port trust-ext untrusted
set port qos mod/port trust-device ciscoipphone
set qos acl ip ACL_IP-PHONES trust-cos any
commit qos acl ACL_IP-PHONES
set qos acl map ACL_IP-PHONES mode/port
set port qos mod/port trust trust-cos
set qos ipprec-dscp-map
set qos cos-dscp-map
set qos map 2q2t tx queue 2 2 cos 5,6,7

29. Automation with Cisco AutoQoS Cisco Catalyst 6500 Series Switch
With AutoQoS
User enables AutoQoS
6500
set port macro 4/1 ciscoipphone Port 4/1 has been fully configured for ciscoipphone. Data vlan set to 10, auxiliary vlan set to 110, port based autoqos configured.
Global autoqos configured on all ports.
set qos autoqos
All ingress and egress QoS scheduling parameters configured on all ports. CoS to DSCP, DSCP to COS and IP Precedence to DSCP maps configured. Global QoS configured
set port qos autoqos 4/1 voip ciscoipphone
Port 4/1 has been fully configured for voip. Global autoqos configured on all ports
Generated by AutoQoS
Global automatic QoS command (set qos auto)—Deals with all switch-wide related QoS settings, settings that are not specific to any given interface. These settings include CoS-to-queue maps, CoS-to-DSCP maps, WRED settings for specific port types, global mappings, and so on.
Port-specific automatic QoS command (set port qos mod/port autoqos)—Configures all inbound QoS parameters for a particular port to reflect that of the desired traffic type (voice, video, applications, and so on).
Generated by AutoQoS

30. Map CoS Values in incoming packets to DSCP values
Automation with Cisco AutoQoS Cisco Catalyst 3550 Series Switch
Without
AutoQoS
Configuring QoS for VoIP on Trusted Ports in the LAN
mls qos map cos-dscp
mls qos !
interface FastEthernet0/1
Description to IP Phone
mls qos trust CoS
wrr-queue cos-map 4 5
priority-queue out
switchport voice vlan 111
switchport access vlan 11
switchport priority extend cos 0
Map CoS Values in incoming packets to DSCP values
6500
3500
Ingress Classification set to trust CoS value received in the packet
Assign packets with CoS 5 to Queue 4 (Expedite Queue)
Enable Egress Expedite Queue
interface GigabitEthernet0/8
no ip address
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
wrr-queue bandwidth
wrr-queue queue-limit
wrr-queue cos-map
wrr-queue cos-map
wrr-queue cos-map 4 5
priority-queue out
Enable Trust Boundary on the phone

31. Automation with Cisco AutoQoS Cisco Catalyst 3550 Series Switch
With AutoQoS
Interface FastEthernet0/1
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
wrr-queue bandwidth
wrr-queue min-reserve 1 5
wrr-queue min-reserve 2 6
wrr-queue min-reserve 3 7
wrr-queue min-reserve 4 8
wrr-queue cos-map
wrr-queue cos-map
wrr-queue cos-map 4 5
priority-queue out
6500
3500
You enable AutoQoS
Generated by
AutoQoS
Interface GigabitEthernet0/1
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
wrr-queue bandwidth
wrr-queue queue-limit
wrr-queue cos-map
wrr-queue cos-map
wrr-queue cos-map 4 5
priority-queue out
You enable AutoQoS
Generated by AutoQoS

32. Map CoS Values in incoming packets to DSCP values
Automation with Cisco AutoQoS Cisco Catalyst 2950EI Series Switch
Without
AutoQoS
Configuring QoS for VoIP on Trusted & Untrusted Ports in the LAN
mls qos
mls qos map cos-dscp
wrr-queue cos-map
wrr-queue cos-map
wrr-queue cos-map 4 5
wrr-queue bandwidth !
Interface GigabitEthernet0/1
Description Uplink to Trusted Source
mls qos trust dscp
interface FastEthernet0/1
Description to IP Phone
mls qos trust CoS
switchport voice vlan 111
switchport access vlan 11
switchport priority extend cos 0
6500
3500
Map CoS Values in incoming packets to DSCP values
Assign packets with CoS 5 to Queue 4 (Expedite Queue)
Ingress Classification set to trust CoS value received in the packet
Enable Trust Boundary on the phone

33. auto qos voip cisco-phone
Automation with Cisco AutoQoS Cisco Catalyst 2950EI Series Switch
With AutoQoS
mls qos map cos-dscp
wrr-queue bandwidth
no wrr-queue cos-map
wrr-queue cos-map
wrr-queue cos-map
wrr-queue cos-map 4 5 !
interface GigabitEthernet0/2
auto qos voip trust
mls qos trust cos
Interface FastEthernet0/1
auto qos voip cisco-phone
mls qos trust device cisco-phone
6500
3500
Generated by AutoQoS
You enable AutoQoS
auto qos voip trust
auto qos voip cisco-phone

34. Cisco AutoQoS Framework Automation with Cisco AutoQoS
Agenda
Introduction
Cisco AutoQoS Framework
Automation with Cisco AutoQoS
AutoQoS Deployment Case Study
Summary
AutoQoS Deployment Case Study

35. Goal: Deploy consistent, end-to-end QoS for VoIP
QoS Deployment for VoIP
Goal: Deploy consistent, end-to-end QoS for VoIP
WAN
Access Layer
WAN
Distribution Layer
Classification & Trust Boundary
Marking / Remarking
Egress Queue Scheduling
Buffer Management
Intelligent Classification
Bandwidth Provisioning
Admission Control
Shaping
Link Fragmentation & Interleaving
Header Compression
Layer 3 Policing
Egress Scheduling
(Multiple Queues with WRR)
Priority Queuing for VOIP
Buffer Management

36. QoS Deployment for VoIP – Without AutoQoS
Identify Traffic of Interest
Trust & Untrust
Consistent end-to-end QoS across LAN & WAN
Platform Consistency
Application
Classification
Policy
Generation
Configuration
Monitoring
&
Reporting
Consistency
Link Efficiency Mechanisms
CoS to DSCP to Queue mapping
WRR & WRED parameters
Transport specific features
Key
Elements
of QoS
Deployment
Monitor the performance of Voice traffic
Classes
Bandwidth requirements
High Speed Vs Low Speed QoS
Buffer Management

37. QoS Deployment for VoIP – Manual Approach without AutoQoS
In the WAN
Identify applications and protocols of interest
Untrusted edge vs. trusted edge
Remark traffic based on classification
Determine how many classes should be configured, and what queuing should be enabled
Determine class bandwidth requirements
Configure transport specific features
Traffic Shaping, MLPPP & TX-Ring settings
Enable bandwidth specific QoS features
Header Compression & Fragmentation Settings (MLP/LFI or FRF.12)
Configure alarm and event settings for monitoring purposes

38. QoS Deployment for VoIP – Manual Approach without AutoQoS
In the LAN
Identify Trust Boundary & Extended Trust Boundary
Remark traffic based on classification
Determine CoS to DSCP and IP Precedence to DSCP mappings
Map CoS values to the different egress queues
Queue Size Settings & WRR weights
FE Vs GE ports
Determine CoS to Egress queue mapping
Configure QoS on a per port basis

39. QoS Deployment for VoIP– Automation with Cisco AutoQoS (Phase I)
Evaluate Network Environment & Generate Initial Policy
Identify VoIP
Bearer & Control Traffic
VoIP Packet Drop Alerts
CBQoSMIB Support
One Command
Full LAN & WAN
Interoperability
Traffic
Classification
Policy
Generation
Provisioning
Monitoring
Consistency
Accomplish all of the above in just 4 steps
Configure Interface / Sub-Interface Bandwidth
Configure IP Address
Enable AutoQoS (Trust Vs Un Trust)
Fine Tune Parameters, if required
Application Classification
Automatically discovers applications and provides appropriate QoS treatment
AutoQoS automatically identifies VoIP bearer and control traffic
Policy Generation
Evaluates the network environment and automatically generates initial and on-going QoS policies
AutoQoS - VoIP: Generates the initial policy required to protect VoIP bearer and control traffic
Configuration
Provides high-level business knobs, and multi-device /domain automation for QoS
AutoQoS - VoIP: Single command to protect VoIp traffic on a link or PVC
Monitoring & Reporting
Generates intelligent and automatic alerts
AutoQoS - VoIP: Automatically issues traps on VoIP packet drops
Consistency
Automatic & seamless inter-operability between all QoS features and parameters across a network topology.
AutoQoS - VoIP: Fully inter-operable between the LAN switches and WAN routers.

40. QoS Deployment for VoIP - Single Step Approach Using Cisco AutoQoS
In the LAN
Enable Cisco AutoQoS for VoIP on the switch
Cisco Catalyst 2950 and 3550 Switches: enable Auto QoS on the interface
auto qos voip [trust | cisco-phone]
Cisco Catalyst 6500 Switch: enable Auto QoS on the port
set qos autoqos
set port qos autoqos <mod/port> voip [ciscosoftphone | ciscoipphone]
set port qos autoqos <mod/port> trust [cos|dscp]
Parameter Tuning
Monitor Cisco AutoQoS on the Switch
sh mls qos interface <x> [buffers | queuing]
(above command not supported on 2950)
show mls qos maps cos-dscp
show auto qos interface <x>

41. QoS Deployment for VoIP - Single Step Approach Using Cisco AutoQoS (Cont)
In the WAN
Enable Cisco AutoQoS for VoIP via Router CLI
Configure IP address on interface or sub interface
Configure bandwidth on interface or sub interface
Enable “autoqos voip [ trust | fr-atm ]” on PVC, DLCI or interface
Parameter tuning & Configuration modifications
Monitor Cisco AutoQoS on the Router
show policy-map interface <x>
show auto qos [interface <interface type>]
show rmon [alarms | events]
Monitor Cisco AutoQoS using QPM 3.0

42. QoS Deployment for VoIP – Class-Based QoS MIB (CBQoSMIB)
Provides read access to configuration and statistical information for MQC based QoS Policies
Provides MQC configuration information and application statistics
Provides CBQoS statistics on a per-policy/per-interface or PVC basis
Monitor pre- and post-policy bit rates on a device
Interface 2
Inbound Policy
Interface 1
Outbound Policy
SNMP
Interface 3
Inbound
Policy
CBQoSMIB
Provide CBQoS Statistics & Configuration Information Per policy
ftp://ftp.cisco.com/pub/mibs/v2/CISCO-CLASS-BASED-QOS-MIB.my

43. QoS Deployment for VoIP – Monitoring & Reporting with QPM 3.0
CLI
interface Serial0
bandwidth 256
Ip address
auto qos voip
Cisco Works QoS Policy Manager
interface Multilink1
ip address
ip tcp header-compression iphc-format
load-interval 30
service-policy output QoS-Policy
ppp multilink
ppp multilink fragment-delay 10
ppp multilink interleave
Central web based tool
QoS config guidance
Templates, customize
Deployment control
File export
Monitoring
Reports
Troubleshooting
Multi-device, global
Device-Based
Single Command
Intelligent Classification
Reporting via Syslog & Traps

44. After QOS Policies have been applied
QoS Deployment for VoIP - Monitoring and Reporting with CBQoSMIB & QPM 3.0
Before QOS
After QOS Policies have been applied
CMPrePolicyPkt
CMPrePolicyByte
CMPostPolicyPkt
CMDropPkt
CMDropByte
CMNoBufDropPkt
Drop=Pre- Post
Bronze
Silver
Gold
Bronze
Silver
Gold
Bronze
Silver

45. QoS Deployment for VoIP – An example using QPM 3.0

46. Cisco AutoQoS Framework Automation with Cisco AutoQoS
Agenda
Introduction
Cisco AutoQoS Framework
Automation with Cisco AutoQoS
AutoQoS Deployment Case Study
Summary
Summary

47. Highlights – Cisco AutoQoS in the WAN
Simplifies QoS configuration for VoIP
Phase I – a single command enables Cisco QoS for VoIP
End-to-end simplification, automation, and intelligence
Classifies VoIP bearer and signaling (H.323, Skinny, H.225 Unicast, SIP & MGCP) traffic
Provisioning based on Cisco Best Practices
Generated parameters and configuration can be user modified

48. Highlights – Cisco AutoQoS in the WAN (Cont)
Intelligent policy generation
Based on available bandwidth & underlying L2 technology
Enables IP RTP Header Compression and Frame Relay Traffic Shaping, if required
Decides on fragmentation settings (FRF.12, MLP/LFI), if required
Supported on FR, ATM, HDLC, PPP & FR-to-ATM links
Provides RMON alerts, if VoIP packet are dropped

49. Highlights – Cisco AutoQoS in the LAN
Simplifies QoS configuration for VoIP
Phase I – a single command enables Cisco QoS for VoIP
Support for Cisco IP Phone & Cisco SoftPhone
Optimal Voice Performance
Parameters based on Cisco Best Practices, extensive lab testing, and input from a broad base of AVVID installations
SoftPhone support does not exist on 2950 and 3550 currently

50. Highlights – Cisco AutoQoS in the LAN (Cont)
Intelligent Policy generation
Automatically decides on trust and extended trust boundary settings
User can bypass telephone and connect their PC directly to the switch
Disables trust when IP phone is relocated
Configures CoS to DSCP to Queue mapping
Decides on WRR settings
Supported on Static, Dynamic-access, voice VLAN, and trunk ports
SoftPhone support does not exist on 2950 and 3550 currently

51. The Cisco Advantage – Most Comprehensive QoS Functionality Available
First to ship Advanced Differentiated Services Toolkit in 2000
Comprehensive QoS language framework via MQC
First to ship Intelligent Application Level classification (Cisco Network Based Application Recognition - NBAR)
Complete QoS monitoring & reporting support with Cisco Works QPM 3.0
Broadest platform support (switch & router space) for QoS
Full interoperability across the LAN & WAN DiffServ nodes
Only vendor to ship a Complete End-to-End Differentiated Services solution
First to ship QoS Automation & Simplification

52. Availability Platforms Software Switches Routers Cisco Catalyst 2950EI
Cisco IOS Software Release 12.1(12c)EA1
Cisco Catalyst 4500
Cisco IOS Software Release 12.1(19)E
Cisco Catalyst 6500
Cisco Catalyst Operating System 7.5.1
Routers
Cisco 2600 Series
Cisco 2600XM Series
Cisco 3600 Series
Cisco 3700 Series
Cisco 7200 Series
Cisco IOS Software Release 12.2(15)T

53. References QoS Home Page CiscoWorks QPM 3.0
CiscoWorks QPM 3.0
AutoQoS Technical Documentation for Cat 3550 & 2950
AutoQoS Technical Documentation for Cat 6500

54. AutoQoS Technical Presentation, 1/03
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