PacketShaper 8'0 Whats New

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PacketShaper 8.0Whats New

• January 2006

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Agenda

• Bridging the WAN-Application Gap
• PacketShaper
• PacketShaper 8.0 Whats New?
• Convergence Enhancements
• Problems solved
• Benefits
• New Integrated Acceleration
• Problems solved
• Benefits
• Summary

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PacketeerThe Intelligent Overlay for Networked
Applications
Deliver a Great User Experienceto the Branch

• Ensure availability of critical applications
• Increase application performance employee
  productivity
• Decrease risk and ensure the payoff of IT
  investments

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Packeteer Products
PacketShaper

• All-in-One WAN Application Optimization
• Visibility, Control, Compression Acceleration
• Branch office, data center, Internet access point
• Single appliance or broad deployment

SkyX Accelerator

• Application Acceleration Specialist
• High capacity data center-to-data center WAN
  acceleration
• Specialized satellite environments IPV6
• Software client-server option

• Scaleable Central Management
• Manage multiple units from central application
• QoS provisioning, traffic organization, admin,
  updates status
• Network utilization application performance
  reporting

PolicyCenter ReportCenter
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New Product NamingScalable, Modular Product
Branding

• Product is now just PacketShaper
• PacketSeeker and PacketShaper Xpress retired
• New concept of Modules
• Monitoring, Shaping, Compression and Acceleration
• Monitoring module present in all models
• Shaping, Compression and Acceleration are
  cost-optional
• A la carte or upgrade with Keys
• Policy Center and Report Center are optional
  software products
• Clear distinction between Compression and
  Acceleration
• Now we have Integrated Acceleration in
  PacketShaper
• Xpress now used to describe technology features
  not product options

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Packeteers PacketShaperBridging the
WAN-Application Gap

• Monitoring for Visibility
• Discover applications on the network
• Track application response SLAs
• Diagnose problems and issues
• Shaping for Control
• QOS provisioning to ensure performance of
  critical applications
• Protect availability from new threats
• Align network costs with the business
• Compression to Create Bandwidth
• Decrease traffic by compressing and packing data
• Increase capacity of network services
• Acceleration to Increase Performance
• Overcome protocol design limits
• Accelerate performance

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8.0 New Technologies for Acceleration
Convergence Integration and Innovation

• New integrated Acceleration Module for
  PacketShaper
• New innovations for managing voice and video
  SLAs and compression
• New innovations to automate management
  availability

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Voice Video Convergence IssuesQuality
Monitoring and Increased Traffic

• Customer Issue Monitoring Performance Quality
  for Converged Voice and Video
• How to monitor voice and video quality for IP
  Telephony and Video conferencing?
• How to monitor carrier SLAs written on new MPLS
  WAN services?
• Customer Issue Increasing voice and video
  traffic between sites.
• More calls between sites as IP Telephony Video
  conferencing rolled out more widely.
• How do I make room?

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New Voice Video Quality MonitoringVoice and
MPLS SLAs
Data Center
Branch
Delay for RTP Traffic Real time MPLS traffic
classes
Jitter Loss
Jitter Loss

• New Quality Metrics
• Measure jitter, loss and delay for RTP traffic
  voice and video
• Mean Opinion Scores (MOS) and R-Factor coming in
  follow on release
• Track SLAs for Voice, Video and MPLS Services
• Extends Application SLAs to voice traffic (Real
  Time Protocol)
• Monitor call quality for IP Telephony and Video
  conferencing
• Monitor performance of real time classes for MPLS
  WAN Service

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Voice and Video Traffic Compression
PackingIncreasing Voice Video Capacity
RTP Payload (call 1)
RTPHeader
IP Header
UDPHeader
Small payload (e.g. 64 bytes) Compressed by
codecs
12 bytes
20 bytes
8 bytes

• UDP-RT Compression Packing for voice and video
• RTP payload already compressed by voice/video
  codec (dont try to compress)
• Header Compression Packet Packing
• Pack payloads from multiple calls other
  compressible data into one super packet
• More efficient transport, removes unnecessary
  overhead
• Increases capacity for voice and video
• Fit more calls onto same bandwidth
• Gains increase with capacity more calls, more
  savings
• Extends Packeteer leading compression capabilities

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Packeteer Best Practices IP Telephony

• Measure impact of IP Telephony
• Assess Network for IPT Readiness
• Provision required bandwidth
• Increase capacity to make room for converged
  traffic

• Monitor Voice and Video Quality in real time
• Alarm Diagnose Issues
• Plan for your next application

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Integrated PacketShaper Acceleration ModuleSpeed
Delivery of Key Applications

• Increase user satisfaction for Critical
  Applications
• Speed file transfers
• 8x-100x speed improvement
• Increase capacity use by up to 99
• Lower reaction time to transactional apps
• 8x speedup for web pages
• Avoid buying more bandwidth
• Integrated with PacketShaper System
• Application intelligent, market leading
  visibility and control
• Works in concert with compression features
• Centrally managed and deployed

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Symptoms of Performance ProblemsSolved by
PacketShaper Acceleration
Large customer history queries very slow to
respond
Nightly server backups are still running when I
get into work
Very slow transfer of CAD drawings, X-Rays or
other large files

• Network Latency exposes TCP protocol design
  limitations

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TCP Poor Performance with Latency

• Affects all TCP Traffic
• 80-90 of network traffic, including Web/HTTP,
  File Transfer (FTP), Exchange, Citrix, ERP, etc
• Impact depends on OS and application type
• Creates problems for large file transfers,
  backup, synchbig jobs

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ExampleTCP Protocol Design and the CAD File

• Engineering CAD File
• An engineering design application working between
  data center and engineers branch office
• Transfers a 500 MB CAD File via File Transport
  Protocol (FTP)
• FTP uses Transmission Control Protocol (TCP) as
  in TCP/IP
• FTP/TCP breaks the CAD file into chunks of data
  to send to the client transmission windows
• FTP/TCP uses ACKnowledgements (ACK) to pace
  the flow of data from server
• Application will not transmit the next window
  until it gets ACK from previous
• Occurs VERY fast if in the same building

Data fills Window
ACK got it - send more data
Data fills next window
Client
Server
Fast on the LAN!
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Latency TCP Slows Down the Process
0 sec
Send
ACK
Wait
Send
ACK
Wait

• 400 ms TCP waits for the ACK before sending the
  next window of data
• Constrains bandwidth rate flows capped at 640
  kbps (Windows 2000)
• 2 Mbps link is only 32 utilized
• 1.74 hours to transfer 500 MB file

Send
ACK
1 sec
Wait
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Acceleration Module Technology Xpress TCP
0 sec
Send
ACK
Wait
Send
ACK

• Transparent, high performance gateway for TCP
  Applications
• Moves server response to local site, rather than
  moving all the way over WAN
• Opens Window sizes to maximize output
• Compression increases available bandwidth even
  faster transfer

Wait
Send
ACK
1 sec
Wait
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PacketShaper Acceleration Solution Transfer a
500 MB CAD File with Xpress TCP
File Transfer on Normal WAN Link
150ms 280ms 600ms
1200ms
Xpress TCP

• Reclaim 68 of link
• Increase (and use) capacity 5x
• Applications Large File Transfers
• CAD Drawing Transfer
• Data Replication
• PC or Server Backup
• Distributed Storage
• Disaster Recovery

2 Mbps WAN
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PacketShaper Acceleration SolutionAcceleration
and Control

• End of Day Operations
• One or a few big flows
• Link is uncongested
• Simple Acceleration works

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Network LatencyProblem Worse on Higher
Bandwidth Links
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Can Your Application Benefit from TCP
Acceleration?Key Qualifiers The Applications

• When is acceleration most useful
• Big jobs large file transfer, database synch,
  server backup, storage mirror, etc
• Big links between data centers, even close
  together (doesnt need high latency)
• High latency environmentsSatellite,
  intercontinental
• Large transactional applications for ERP, CRM and
  other customer-critical applications.
• IF Application needs it, then
• Latency, link size, operating system

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Can Your Application Benefit from TCP
Acceleration?Key Qualifiers Link Size, OS,
Latency

• Example Windows 2003 2 Mbps link
• Needs 170 ms round trip latency before ANY
  benefits
• Between continents
• Higher bandwidth, lower latency required before
  benefit

Interactive double click the chart to change the
window size to your environment
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How to Accelerate Transaction-based Applications

• Congestion fuels slow transactions
• Most dont need lots of bandwidth just enough
• Competing with other types of applications on the
  network
• SAP order entry, CRM customer query, Citrix
  interactive wire transfer, credit transaction
• Whats the fix?
• QOS Provisioning protect bandwidth
• Increased capacity compression/caching
• Xpress TCP for large transactions
• Xpress HTTP for Web based transactional traffic
• Careful of temporary fixes adding bandwidth
• Creates better playground for bandwidth intensive
  applications

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Acceleration Module Solution Xpress HTTP

• Problem
• Slow portals, Web-based SAP, Intranet and web
  pages
• Solution Xpress HTTP
• Accelerates Web-based applications Intranet
  portals
• 8x speedup for web pages
• Fast connection setup, Intelligent parsing,
  fetching, pre-caching of objects content
• Applicable to HTTP and XML over HTTP

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Packeteer Best Practices Smoothing the
Transition to XML-based Web Services

• Classify Measure Impact of XML-based web
  services
• Assess Network for Web Services Readiness
• Provision required bandwidth

• Increase capacity to make room for converged
  traffic
• Accelerate performance of XML over HTTP
• Monitor performance and SLA

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New in 8.0Innovations to automate management
availability

• ActiveTunnel Automation
• Automate discovery, configuration reliability
• Stateless Compression increased scalability and
  availability
• Uses static compression methods vs stateful
  dictionaries
• Increased scalability up to 1000 compression
  partners
• Very useful in high loss environments
• Less effective compression results than CNA
  stateful compression
• More tolerant of loss and out of order packets

• Automatic adaptation to the environment
• Automatic switching between stateful and
  stateless compression
• Adjusts based on conditions in the network
• High loss or out of order packetsautomatic
  switchover to stateless
• PreviouslyPacketeer would stop compressing if
  environment too problematic
• New Compatibility with different devices and
  operating modes
• Mix and match Packeteer productsPacketShapers or
  SkyX Gateways
• SCPS Mode Compatible with SCPS protocol-enabled
  devices
• Optimizes for different conditions (stateful v
  stateless)

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Integrating WAN Application Optimization

• Manage the entire process
• Assessing the issues
• Choosing the tools
• Resolving emergent problems
• Key feedback relationships between optimization
  tools
• QOS provisions the pipe to applications
• Compression changes the size of the pipe
• Acceleration needs to know how much pipe there is
  to fill.
• Need to work together
• Manage all types of applications
• Customer critical, latency sensitive applications
• Collaborative documents files
• Real time communications
• IT Infrastructure
• Recreational and malicious

MonitoringIssue Analysis
IntegratedApplication Optimization
Shaping QOS Provisioning
Acceleration EnhancedPerformance
Compression Increased Capacity
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Example Deployment Progression
WAN EdgeBranch Offices
WAN CoreMain Site
Internet Link
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Ordering Details

• New SKUs for acceleration
• Add AC to add acceleration
• Add XA to add both compression and acceleration
  
• E.g., For a 2500 order
• PS2500U-AC to add Acceleration to an existing
  2500
• PS2500-L002M-AC to purchase a 2500 with
  acceleration
• PS2500-L002M-XA to purchase a 2500 with
  acceleration and compression
• Note, XP is still used for compression only

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Whats in SkyX Accelerator, But not in 8.0

• Acceleration of IPv6
• Multicast Fan-out
• Compatibility with SkyX Clients
• Number of accelerated connections higher in SkyX
• Higher throughput for SkyX Accelerator (to 155
  Mbps)
• SkyX Optimized for Satellite environments, 8.0
  for terrestrial networks
• Although 8.0 will be accelerate well in
  satellites, SkyX will accelerate even better if
  there is loss

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Upgrading Note Modes

• Because the infrastructure is changed, and
  backward compatibility is important, 8.0 has
  several modes
• Ramifications
• New commands
• The old commands are there, but apply to Legacy
  Tunnels
• New commands for new tunnels
• Modes
• Legacy Everything the same
• Migration Some legacy tunnels
• Enhanced All new tunnels
• Modes will eventually go away, but probably not
  for several releases

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SummaryNew Release 8.0

• New integrated Acceleration Module for
  PacketShaper
• New innovations for managing voice and video
  SLAs and compression
• New innovations to automate management
  availability

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Technical Details for 8.0
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Compression Module Minor 8.0 Enhancements

• On-the-fly class and service overrides
• No need to stop and restart compression!
• Non-compressible traffic broken down by reason
• No tunnel/partner
• Uncompressible data
• Policy prevented compression
• Better diagnostics and stats
• Per tunnel statistics
• Detailed tunnel state information shows why a
  tunnel is in trouble
• Drill down to tunnel and compression information
  in great detail, showing lanes, compression
  chains, individual compressors, etc.

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Compression Module Packing 8.0 Enhancements

• Non-atomic packing
• Ability to fill packets to MTU by spanning
  packets
• Highly configurable
• Packing can be configured on a per-service and
  per-class basis
• Ability to set packing time to one of four
  buckets
• Off
• Pack Go (0 ms hold time)
• Latency sensitive
• Non latency sensitive
• Or select a specific time in milliseconds
• Can be used on a tunnel even if neither
  compression nor acceleration are being used
• Note To enable packing, the unit must have a
  Compression Key

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Active Tunnel

• Static (priority) and Dynamic Tunnels
• Static tunnels can be configured with customized
  parameters
• Packing on/off, MTU, compression/acceleration
  on/off, firewall, DiffServ
• Subnets, hosts and ranges of hosts assignable to
  tunnels on local and remote end
• Dynamic tunnels can be made static
• Improved host discovery
• Leverage ARP and routing protocols for dynamic
  host discovery
• Statistics, status, and event logging per tunnel
• Simplifies management

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Maximum Bandwidth of a Single Flow, By Operating
System and Latency
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Jitter

• Jitter
• Jitter measures how much the flight time of
  consecutive packets varies
• Time units based on the sample rate of the codec
  (e.g., 8000 hz).
• Jitter uses Absolute Value (always positive)

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VoIP - Latency

• Latency is based on a round trip measurement
  between two shapers then divided by 2

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Technical Questions 8.0

• What packet loss rate do you switch between
  stateful and stateless compression and back again
• When the amount of unacknowledged data on the
  wire exceeds a threshold (varies based on
  retransmits seen), well start sending over the
  stateless channel.
• When we receive enough acknowledgements back to
  send more data on the link, we will switch back.
  The entire process can happen very quickly.
• What is a chain?
• Compression chaining is an architectural
  mechanism allowing arbitrary number of
  specialized compressors to be run in sequence
• Sequence of compressors handle different types
  of data, allowing for application-specific
  compressors. For example

IP TCP HTTP Body
IP header compressor
TCP header compressor
HTTP header compressor
CNA
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Technical Questions 8.0

• What happens with MPLS labels? In SkyX and in
  version 8.0.
• For enterprises, it is unlikely that the traffic
  will actually have MPLS labels. Usually it will
  have DSCP labels.
• For compression and compression plus
  acceleration, the DSCP marks labels are copied
  onto the tunnel packet. For actual MPLS tags,
  they would be inside the tunnel, but not on the
  tunnel packets. Paul?
• For acceleration only, the DSCP marks are
  included in the XTP (or SCPS) packets.
• If out of order packets are an issue on this
  release what steps are being taken in future
  releases to fix the problem?
• For compression, 8.0 will handle out-of-order
  packets better than previous release. This is
  because the tunnel will automatically back off
  into stateless mode when this is occurring.

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Technical Questions 8.0

• How do you read a tunnel event log? For
  instance
• 018 0067463.9448 Enabled chain 6. Channel 18
  has recovered
• 019 0067464.0442 Transport send blocked on lane
  0 channel 18
• 020 0067464.0442 Disabled chain 1. Channel 18
  temporarily unavailable
• Entry number Time Stamp Event
• 018 shows re-enabling stateful compression using
  Chain 6
• 019 shows a block has occurred.
• 020 shows disabling a chain to move to stateless.
• More in-depth view into the Tunnel technology
• Anything specific you all had in mind?

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Flow and Tunnel Protocols
No Compression No Acceleration
No Compression XTP Acceleration
Compression No Acceleration
Compression XTP Acceleration
TCP
XTP
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Best Practices Details
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Packeteer Smoothing the Transition to XML-based
Web Services

• Measure Impact of XML-based web services
• Define custom application definition with
  Packeteer WSDL classification tool
• Measure bandwidth utilization to profile capacity
  requirements
• Measure Total Transaction Delay to benchmark user
  experience and set application SLAs
• Measure Network Delay and Server Delay to
  baseline expected levels of different delivery
  components.
• Assess Network for IPT Readiness
• Discover network applications WAN capacity
• Identify bandwidth requirements for new voice
  video calls
• Benchmark user performance SLAs for critical
  applications ERP, CRM, etc
• Plan new capacity needs

• Provision required bandwidth
• Ensure bandwidth for critical web services
  transactions
• Contain recreational other traffic to make room
• Increase capacity to make room for converged
  traffic
• Increase link capacity with compression on all
  traffic types
• Accelerate performance of XML over HTTP
• Add Acceleration Module for latency sensitive web
  services with RTT of over 300 ms.
• Monitor performance and SLA
• Set expected performance bechmarks according to
  Network Assessment
• Alarm on SLA threshholds
• Diagnose emergent performance issues

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Packeteer and IP Telephony

• Measure impact of IP Telephony
• AutoDiscover voice codecs used for your IP
  telephony implementation
• Measure bandwidth utilization to profile capacity
  requirements
• Measure jitter, delay and loss to identify if
  its in application requirements
• Assess Network for IPT Readiness
• Discover network applications WAN capacity
• Identify bandwidth requirements for new voice
  video calls
• Benchmark user performance SLAs for critical
  applications ERP, CRM, etc
• Plan new capacity needs
• Provision required bandwidth
• Ensure per call bandwidth with QOS Provisioning
• Contain recreational other traffic to make room
  for voice

• Increase capacity to make room for converged
  traffic
• Increase link capacity with compression on all
  traffic types
• Increase call capacity on provisioned bandwidth
  with Real Time Voice/Video Compression
• Monitor Voice and Video Quality in real time
• Voice Video SLAs Jitter, delay, and loss for
  Real Time Protocol traffic
• Business Critical Application SLAs Total
  Transaction Delay, Server Delay, Network Delay
• Alarm Diagnose Issues
• Set alerts based on established SLA threshholds
• Diagnose emergent performance issues
• Plan for your next application

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Thank you.