Comtech Memotec FX Series 7

WAN Optimization: Delivering Fast Broadband QoE

When it comes to Internet access over satellite, high-speed connectivity does not necessarily equate to a fast-broadband user experience like what end users expect when connected to 4G or 5G, wireless or wireline terrestrial networks. To users, a crisp web browsing experience, responsive interaction together and rapid content display speeds are paramount for delivering a good Quality of

Experience (QoE). Due to the nature of the TCP protocol used for delivering Internet content, satellite

latency and transmission impairments (packet drops), can negatively impact a user

experience regardless of bandwidth capacity. Furthermore, the problem is worsened

today through feature-rich web page media content, and inflated file transfer resulting

from HD pictures / videos exchanges on social medias together with HD movie

streaming. Without optimization, the display of these types of content presents a

slow and non-responsive user experience over satellite.

The Solution: Comtech WAN Optimization

To mitigate the adverse effect of satellite latency on file transfer, web browsing and

HD media display (video streaming), a Protocol Enhancement Proxy server (PEP)

needs to be put in line at both ends of the satellite link to process the user traffic.

Such PEP server shall ensure overall QoE is up to user’s expectation (broadband-

grade) across all applications (not just file transfer), and all users. That is the role of

Comtech’s WAN Optimization (WANOp) Turbostreaming© solution. Comtech’s WANOP uses a unique combination of techniques to deliver both lightning fast file transfer AND a true broadband user experience (QoE) to everyone. Specific to Comtech’s WANOp solution is the focus on Communications Service Providers (CSPs). Technologies to mitigate satellite

delay have been around for a while. But solutions used by most vendors today are Layer 3 (IP/Routed) only, have limited performance, and does not support multiple network layers (MPLS, L2 or L3 tunnels). CSPs need large trunks supporting multiple thousands of users, and Layer 2 network services: Layer 2 VLANs or MPLS protocol are the most common approaches for delivering protocol-transparent transport services to other service providers such as ISPs, MNOs, or large corporate VPNs. This is where Comtech’s WANOp solution comes to play: Comtech’s WANOp offers a simple, performant, reliable transparent Layer 2 efficient solution, compatible with any protocol mix including MPLS, supporting L2/L3 VPNs with overlapping IP addressing space, 4G/5G cellular backhaul, and scales to very large trunk capacity (1.5 Gbps and beyond with Comtech’s HX companion product).

Features

• Turbostreaming© dramatically improves file downloads and web browsing QoE across satellite links, enabling a terrestrial-like fast
• broadband user experience (>150 Mbps per user TCP session and up to 600 Mbps file transfer across 500ms GEO satellite links)
• DNS caching substantially shortens web page rendering by a factor up to two
• Deliver acceleration across ISP, Layer 2/Layer 3 corporate VPN and mobile (4G/5G) backhaul, Internet access traffic (including
• overlapping IP addresses)
• 100% end-to-end Layer 2/Layer 3 transparent (“Wire-like” operation: no Layer 3 IP routing information or processing required)
• Jumbo frames and multiple Layer 2 stacks support (VLANs, MPLS)
• Dual stack IPv4 and IPv6 support
• Layer 2/3/4 Quality of Service (QoS) – 3 level hierarchical queues with Priority, CIR, MIR settings
• Optional Layer 2-Layer 4 IP traffic generic Header Compression and Packet Aggregation (VoIP/2G/3G IP traffic optimization)
• Optional payload compression: Byte Caching and GZIP compression
• Real-time dynamic traffic shaping with ACM-enabled Comtech EF Data modems (for Ka- or Ku-band satellite links)
• Carrier-grade operation (1+1 system redundancy, line bypass, path redundancy)
• Scalability up to 1.5 Gbps throughput and 200k TCP sessions accelerated
• Simple license-based tiered prici