300-115 Implementing Cisco IP Switched Networks

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1 1 1 WAN Technologies Based on CCNA 4 v3.1 Slides Compiled & modified by C. Pham Cisco A New Paradigm for Automating the Delivery of Network Quality of Service

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A New Paradigm for Automating the Delivery of Network Quality of Service:

A New Paradigm for Automating the Delivery of Network Quality of Service Simpler, Cheaper, & Faster QoS Deployments Reduces operator errors Up to 3 times cheaper & faster 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

Agenda:

Agenda Quality of Service – Why should you care? Introducing Cisco AutoQoS Cisco AutoQoS Phase 1 - The Details Summary Quality of Service – Why should you care?

It Begins and Ends with Applications:

ERP Supply chain mgmt E-commerce Internet banking Customer service center Electronic funds transfer Messaging Survey of 250 Fortune 1000 companies $13,000 $11,000 $10,000 $7,000 $3,700 $3,500 $1,000 Source: Forrester Research Inc Reliability Goal: Eliminate Network Failure Points Application Cost of Downtime per Minute It Begins and Ends with Applications

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RELIABILITY = PERFORMANCE AVAILABILITY + Cisco Globally Resilient IP Cisco Quality of Service (QoS) SECURITY + Cisco Integrated Security How Do We Make the Network Reliable? ( CxO & Network Manager Perspective )

What is QoS? Basic Perspectives:

The User Perspective The network capability to provide the desired application performance It’s all about the applications and their users Voice, Video, and Data! What is QoS? Basic Perspectives The Network Manager Perspective Bandwidth, delay, jitter, and packet loss are policy variables to achieve the desired application performance

What is QoS? Business Relevance:

What is QoS? Business Relevance Cisco QoS empowers the network manager to set Proactive Policies in delivering the desired application performance Increased User Satisfaction Increased Productivity

Why Not Just “Add Bandwidth” For Performance?:

Adding bandwidth is NOT free! A Real Example: Hotelier with 2000 locations in the U.S. Going from 128Kbps to 256Kbps for application performance = $256 extra per site/month = $512K/month for 2000 sites = $6.1M/year in additional cost! QoS provided required network performance for the hotel reservation application, saving the customer recurring OPEX! All bandwidth is not created equally Dependent on location, SLA, and Service Need to prioritize bandwidth utilization on the network There are speed mismatches, leading to congestion (transient or persistent), in every network Insurance policy for business critical applications Why Not Just “Add Bandwidth” For Performance?

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Designing Learning Configuring Monitoring & Reporting The QoS Challenge: Reduce the Cost & Time to Deploy QoS Manual QoS Deployment Cisco AutoQoS Target: Cheaper & Faster! Time Total Cost

Agenda:

Agenda Quality of Service – Why should you care? Introducing Cisco AutoQoS Cisco AutoQoS Phase 1 - The Details Summary Introducing Cisco AutoQoS

What does Cisco AutoQoS Do For Customers?:

What does Cisco AutoQoS Do For Customers? Automation makes it simpler to Get a quick start on QoS deployment Deploy QoS in the most common business scenarios Reduce operator and configuration errors Gain visibility into network & application performance Simpler implies fast and cheaper Example Scenario: I need to add VoIP to my network Where do I begin for QoS on the network? What should I monitor and report on ? Cisco AutoQoS drastically reduces learning, designing and configuration Uses intelligence to automate

Cisco AutoQoS – Automating the Key Elements of QoS Deployment:

Application Classification Example: automatically discovering applications and providing appropriate QoS treatment Policy Generation Example: auto-generation of initial and ongoing QoS policies Configuration Example: providing high level business knobs, and multi-device / domain automation for QoS Monitoring & Reporting Example: generating intelligent, automatic alerts and summary reports Consistency Example: enabling automatic, seamless interoperability among all QoS features and parameters across a network topology – LAN, MAN, and WAN Cisco AutoQoS – Automating the Key Elements of QoS Deployment

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The Proof is in the Savings with Cisco AutoQoS! Up to 3 Times Cheaper & Faster QoS Deployments! Faster QoS deployments allow customers to realize VoIP opportunities more quickly!

Not to Forget….:

Software Application 40% Operational Errors 40% Network 20% Platform Problems The network Operating system or hardware Change management Application bugs (ie: DNS) Misconfiguration Source: Gartner Group, CNET News.com Jan 26, 2001 Not to Forget…. Human Error is the Most Significant Contributor to Downtime Process consistency AutoQoS reduces potential for operator error

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Fewer knobs, and Fewer low-level knobs to tune! Simpler, Cheaper, and Faster QoS Automation Reduces Operator Error! RELIABILITY = PERFORMANCE AVAILABILITY + Cisco Globally Resilient IP Cisco Quality of Service (QoS) SECURITY + Cisco Integrated Security

Cisco AutoQoS – The Vision:

Cisco AutoQoS – The Vision Evolve the network to an intelligent entity that tunes itself for QoS Provide high-level business knobs Customer retains ultimate control

The Future of Cisco AutoQoS:

Time Cisco AutoQoS – VoIP (Phase 1) Dynamic Policy Recommendations Business Policy Specification Active Auto-Monitoring (Phase3) Functionality Cisco AutoQoS – Voice, Video & Data Intelligent Alerts (Phase 2) Cisco Modular QoS CLI (MQC) – The Foundation for Cisco AutoQoS (The Cisco Language for QoS) The Future of Cisco AutoQoS 2000 Today 2003 Future

Agenda:

Agenda Quality of Service – Why should you care? Introducing Cisco AutoQoS Cisco AutoQoS Phase 1 - The Details Summary Cisco AutoQoS Phase 1 - The Details

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Cisco AutoQoS Phase1 – ‘Automatic QoS for VoIP Traffic’ (AutoQoS – VoIP) interface Multilink1 ip address 10.1.61.1 255.255.255.0 ip tcp header-compression iphc-format load-interval 30 service-policy output QoS-Policy ppp multilink ppp multilink fragment-delay 10 ppp multilink interleave interface Serial0 bandwidth 256 Ip address 10.1.61.1 255.255.255.0 auto qos voip Configures Each Switch or Router LAN & WAN - Routers & Switches One single command enables Cisco QoS for VoIP on a given port/interface/PVC!

Cisco AutoQoS – VoIP Feature Availability:

Cisco AutoQoS – VoIP Feature Availability Platform Software Availability Cisco Catalyst 2950 and 3550 Switches Cisco IOS Software Release 12.1(12c)EA1 Today! Cisco Catalyst 6500 Series Switches Cisco Catalyst OS 7.5.1 Today! Cisco 2600, 2600-XM, 3600, 3700, 7200 Series Routers Cisco IOS Software Release 12.2(15)T Q2 CY’03 Cisco Catalyst 4500 Series Switches Cisco IOS Software Release 12.1(19)E Q3 CY’03

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interface Multilink1 ip address 10.1.61.1 255.255.255.0 ip tcp header-compression iphc-format load-interval 30 service-policy output QoS-Policy ppp multilink ppp multilink fragment-delay 10 ppp multilink interleave interface Serial0 bandwidth 256 Ip address 10.1.61.1 255.255.255.0 auto qos voip QoS Policy Manager (QPM) Centralized, web-based tool to manage network-wide QoS for multiple devices Cisco IOS and CatOS Using Cisco AutoQoS – VoIP & CiscoWorks QPM Configures Each Switch or Router

Agile QoS Deployment for VoIP Using Cisco AutoQoS-VoIP and CiscoWorks QPM:

Application Classification Cisco AutoQoS identifies VoIP bearer and control traffic Policy Generation Cisco AutoQoS evaluates the network environment and generates initial policy on a given Port, Interface, or PVC Agile QoS Deployment for VoIP Using Cisco AutoQoS-VoIP and CiscoWorks QPM Configuration Cisco AutoQoS provides a single command to enable QoS on each interface/PVC QPM provides centralized network-wide configuration, management and monitoring Monitoring & Reporting Traps issued on VoIP packet drops QPM uses data received from network devices to generate QoS reports Consistency Cisco AutoQoS is fully inter-operable between LAN & WAN devices

Cisco AutoQoS Benefits Router Platforms:

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

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, and Skinny Signaling Protocols Command Line Interface Automation with Cisco AutoQoS Router Platforms auto qos voip [trust] – Untrusted Mode by default auto qos voip [fr-atm] – Enabled on FR DLCI for FR/ATM Interworking

Automation with Cisco AutoQoS Router Platforms (Cont):

Classification Trust: relies on DSCP markings from wwitches (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 Automation with Cisco AutoQoS Router Platforms (Cont)

Automation with Cisco AutoQoS Router Platforms (Cont):

RMON event configured generated by 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 33333 log trap AutoQoS description “AutoQoS SNMP traps for Voice Drops” owner AutoQoS Rmon alarm 33350 cbQoSCMDDropBitRate.2881.2991 30 Absolute rising-threshold 1 33333 falling-threshold 0 Owner AutoQoS With AutoQoS Automation with Cisco AutoQoS Router Platforms (Cont) Frame Relay

Functionality & Benefits – WAN:

Functionality Benefits Auto-determination of Wide-Area Network (WAN) Settings Automatic determination of WAN settings for fragmentation and interleaving, compression, encapsulation, and Frame Relay-ATM interworking. Eliminates the need to understand QoS theory and design practices in common deployment scenarios. Initial Policy Generation Initial Policy Generation provides users an advanced starting point for VoIP deployments. This reduces the time needed to establish an initial feasible QoS policy solution that includes providing QoS to VoIP bearer traffic, signaling traffic, and best-effort data. Traps & Reporting Syslog & SNMP traps provide visibility into the Classes of Service deployed, and notification of abnormal events such as VoIP packet drops. Intelligent Classification of Network Traffic Using Cisco Network Based Application Recognition ( nBAR ) for deep and stateful packet inspection, this feature can identify VoIP bearer and control traffic. Simplifies QoS configurations by reducing – and in some cases eliminating – the need for Access Control Lists (ACLs). Functionality & Benefits – WAN

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User can meet the voice QoS requirements without extensive knowledge about: Trust boundary CoS to DSCP mappings Weighted Round Robin (WRR) & Priority Queue (PQ) Schduing parameters Generated parameters and configurations are user tunable Cisco AutoQoS Benefits S witch Platforms Cisco Catalyst 6500, 4500, 3550, and 2950EI Switches

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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 Automation with Cisco AutoQoS S witch Platforms

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Cisco Catalyst 6500 Switch Single Command: set port macro <mod/port> [ciscosoftphone | ciscoipphone] 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 Automation with Cisco AutoQoS S witch Platforms (Cont) Command Line Interface

Functionality & Benefits – LAN:

Functionality Benefits Simplified Configuration In one command, Cisco AutoQoS configures the port to prioritize voice traffic without affecting other network traffic. Includes the flexibility to tune Cisco AutoQoS settings for unique network requirements. Automated and Secure Automatically detects Cisco IP Phones and enables Cisco AutoQoS settings (Catalyst 2950 & 3550). Prevents malicious activity by disabling QoS settings when a Cisco IP phone is relocated/moved. Optimal VoIP Performance Leverages decades of networking experience, extensive lab performance testing, and input from a broad base of customer AVVID installations to determine the optimal QoS configuration for typical VoIP deployments. Uses all advanced QoS capabilities of the Cisco Catalyst switches. End-to-End Interoperability Designed to work in harmony with the Cisco AutoQoS settings on all other Cisco switches and routers, ensuring consistent end-to-end quality of service. Functionality & Benefits – LAN

Cisco AutoQoS - VoIP Framework DiffServ Functions Automated:

Cisco AutoQoS - VoIP Framework DiffServ Functions Automated Fine tuning of AutoQoS generated parameters by user, if desired DiffServ Function Cisco IOS / CatOS 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 categorize packets into a class Congestion Management Percentage-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 Efficiency Mechanism Link Fragmentation & Interleaving Reduce jitter experienced by voice packets

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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 Server Farm Server Farm Core Layer 3 Switched Backbone Layer 3 Switch Layer 2 Switch Building Building Building Access Distribution Automation with Cisco AutoQoS – VoIP Intelligence in the LAN

Automation with Cisco AutoQoS – VoIP Intelligence in the WAN:

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

QoS Deployment for VoIP – Class-Based QoS MIB (CBQoSMIB):

QoS Deployment for VoIP – Class-Based QoS MIB (CBQoSMIB) ftp://ftp.cisco.com/pub/mibs/v2/CISCO-CLASS-BASED-QOS-MIB.my 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 SNMP Interface 1 Outbound Policy CBQoSMIB Provide CBQoS Statistics & Configuration Information Per policy Interface 3 Inbound Policy Interface 2 Inbound Policy

QoS Deployement for VoIP - Monitoring and Reporting with CBQoSMIB & QPM 3.0:

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

QoS Deployment for VoIP – An example using QPM 3.0:

QoS Deployment for VoIP – An example using QPM 3.0

Agenda:

Agenda Quality of Service – Why should you care? Introducing Cisco AutoQoS Cisco AutoQoS Phase 1 - The Details Summary Summary

Understanding the Complete Cisco QoS Picture:

Voice Video Data Understanding the Complete Cisco QoS Picture Cisco IOS Software or Cisco Catalyst OS Cisco QoS Features Cisco AutoQoS Cisco Router or Switch CiscoWorks QoS Policy Manager Cisco Modular QoS CLI (MQC – The User Language)

The Cisco Advantage – Most Comprehensive QoS Functionality Available:

The Cisco Advantage – M ost Comprehensive QoS Functionality Available First to ship QoS Automation 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

A New Paradigm for QoS Simpler, Cheaper, Faster QoS Deployments:

A New Paradigm for QoS Simpler, Cheaper, Faster QoS Deployments

References:

References Cisco QoS Home Page http://www.cisco.com/go/qos Cisco QPM 3.0 http://www.cisco.com/en/US/products/sw/cscowork/ps2064

Total Cisco QoS Picture Comprehensive Functionality for Cost Savings:

QoS Element Cisco AutoQoS / QoS Toolkit Generic Router Vendors Generic Switch Vendors Appliance Vendors Policy Generation (Comprehensive Toolkit) Consistency (Common User Language) Application Classification Easy Configuration Monitoring & Reporting Total Cost of Solution $ $$ $$$ $$ Outdated Lagging Behind Leading Edge Total Cisco QoS Picture Comprehensive Functionality for Cost Savings

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46 46 46 © 2002, Cisco Systems, Inc. All rights reserved. AutoQoS Customer Presentation, 1/03

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