Liad Ofek Vice President, Technical Services Expand Networks

Clearing the Way for VoIP in the Branch  What’s the Hidden Cost?  The promise and the reality of VoIP  VoIP challenges in the Branch Office  The Expand Compass Solution for VoIP deployments

Conflicting Commercial & User Requirements Remote User 80% of Users are Remote! 87% of Users are Remote! Corporate HQ annoyed  San Francisco Remote User annoyed  Poor response time frustrated  London Remote User frustrated  High support costs gives up  Tokyo Remote User gives up  Lack of productivity HQ  Cost-reduction  Simplicity  Consolidation  Business Continuity  Regulatory Compliance REMOTE  Globalization  Productivity

The Promise of Voice/Video and Data Convergence  Reduces cost  Simplifies management  Provides enhanced features  Delivers greater mobility for the distributed business  Provides same quality as PSTN calls  Converged Voice, Data, Video – unified infrastructure for feature- rich applications  Convergence made easy and even more cost-effective with MPLS (Multi-protocol packet switching) Voice/Video Over IP are here to stay…BUT...

The Reality  The WAN limits the success of Convergence  Low speed links for remote sites – 128kbps, 512kbps, T1’s/E1’s  Low visibility for existing application bandwidth consumption  Performance challenges  Unacceptable voice quality  Greedy and bursty competing applications  MPLS access points are still congested…QoS is not enough  More data is thrown over the WAN  Server consolidation  Web services  Disaster recovery  Voice is not the only business critical application  Other data applications can’t be degraded to improve voice quality

More Applications Deployed To The Branch ______ ______ ______  87% of employees work from the branch (Nemertes, 2004)  New applications   Internet / Intranet  VoIP  Same WAN  Frame Relay  Leased lines  IP VPN  MPLS

Insufficient Capacity and Burst Remote Branch Challenges

Latency and Chatty Applications Insufficient Capacity and Burst Remote Branch Challenges

Intermittent Connectivity and Packet Loss Latency and Chatty Applications Insufficient Capacity and Burst Remote Branch Challenges

Congestion and Greedy Applications Intermittent Connectivity and Packet Loss Latency and Chatty Applications Insufficient Capacity and Burst Remote Branch Challenges

The Complete Technology Solution for VoIP

WAN Optimization Compression - reduce data over the WAN: free up the WAN capacity for Voice  WAN Compression  Gigabyte Caching

Best-of-breed WAN Compression  Patented algorithms  Byte-level caching  Packet header reduction  Adaptive packet compression  Fully transparent

Next-Generation WAN Compression  When data repeats, content is delivered from the edge  The “bandwidth effect”

WAN Throughput Improvements  Increase WAN capacity  Benefits all applications  Transparent to WAN, applications, servers and users  Alternative to WAN upgrades with a 3 – 9 month ROI We have literally been able to trick our 56Kbps lines into behaving like T1s – Julie Williams, VP & Compliance Officer First National Bank Iowa Microsoft Exchange 0% Lotus Notes SAP NetBIOS Intranet Web XML Disaster Recovery Citrix 200%400%600%800%1000%1200% 0%2X4X6X8X10X12X Typical Improvements Peak Improvements Additional WAN capacity

WAN Optimization QoS - Guarantee voice quality  Shaping  Traffic priority  MPLS tagging  Policy scheduling  Bandwidth limitation

QoS - Gain Application Control  Prioritize and control apps  Guaranteed, min/max bandwidth for key applications  Control/block rogue applications  Seamless integration with other optimization services We were able to configure VoIP QoS with a simple configuration at 30% less than the Telco cost –Jacob Nielsen, Network Administrator Brenntag Nordic

Acceleration Optimize all applications to improve application response time Application Acceleration  Voice Optimization (Fragmentation)  HTTP Acceleration  FTP Acceleration  DNS Acceleration  HTTPS Acceleration  Citrix Acceleration Protocol Acceleration  TCP Acceleration  SCPS Reliability

H How Does Voice Optimization Work ?  If applications sharing a low bandwidth link include FTP and VoIP, small VoIP packets may be delayed  Fragmentation will sub-divide the large packets and insert the small  Reassembly performed at remote Accelerator  Applied only to QoS default and low priority queues H H H H H H H H H

Visibility & Management Visibility for VoIP performance ExpandView  Central Management  Inventory & License Management  Global Visibility  Ease of Deployment Application & Network Visibility  Automatic Application Discovery  NetFlow  SLA Management

Visibility Into Application Performance  Visibility for World-class NOCs  Network, application & performance statistics  Application performance and alerting  Network trending and analysis …more impressive were the monitoring capabilities that offered in- depth visibility & enabled us to tune the performance of Microsoft Office –Ovvyng Harewood, IT Director for the Ministry of Finance, Gov of Barbados

Security Encryption  IP Sec Tunneling  3 DES AAA  Authentication  Authorization  Accounting  RADIUS  TACACS+

WAFS (Wide Area File Services) Will VoIP be affected by server consolidation ?  Terminate CIFS protocol locally (proxy) to eliminate “chattiness” over the WAN  Cache the objects to provide LAN-like performance  Consolidate other RBO services to provide LAN performance (print, DNS, DHCP, Etc.)

How Does WAFS Work?

Summary  Merging voice and data networks can cause significant problems which can offset the financial benefits of VoIP if not addressed properly  Technologies like compression, QoS, protocol and application acceleration, and monitoring are essential to establishing VoIP as an integral application for the branch