WAN Optimization

Talari SD-WAN with integrated WAN Optimization

Talari’s failsafe SD-WAN is now enhanced with WAN optimization that reduces TCP transfers, and compresses and de-duplicates data to get more traffic into existing bandwidth.

The Talari SD-WAN provides native support for WAN Optimization, including data compression, data deduplication and congestion controls. This frees up bandwidth and removes congestion for optimal application delivery. Talari WAN Optimization is a composite feature that increases WAN efficiency for bulk file-transfers, especially for data requested by more than one user at the same location.

Talari WAN Optimization

The Talari SD-WAN performs WAN Optimization on TCP flows, allowing network administrators to simplify network infrastructure by consolidating SD-WAN and WAN Optimization services with a single device. The Talari WAN Optimization is configured on a per-rule basis, and performs TCP offload, and data deduplication and compression.

When WAN optimization is enabled for a flow, TCP termination splits a single TCP connection into three separate connections, all managed and maintained by the Talari SD-WAN. This offers maximum bandwidth utilization and reliable data transfer across the WAN via the Talari Dynamic Conduit. 

The Talari SD-WAN with WAN Optimization capabilities

Data compression - reduces the payload size to deliver more data across the WAN, enabling unencumbered application delivery, and the ability to handle more traffic. Talari compression uses data patterns applied to data flowing through a Talari Appliance to free up more bandwidth. This is handled on-the-fly, to reduce bandwidth consumption and improve application delivery performance. 

Data deduplication - is a form of compression that eliminates redundant copies of data over the WAN, and reduces storage overhead. Talari deduplication ensures that only one, unique instance of data is retained at the requesting site. Redundant data blocks are replaced with a reference to the unique data copy, so only the data that has changed since the previous backup is transmitted 

TCP optimization - Talari SD-WAN appliances use WAN Optimization to manage all TCP sessions, establishing and tearing down TCP connections locally (at LAN speeds) to avoid WAN congestion. This increases link utilization and improves the user experience. TCP termination offloads the responsibility from servers having to handle the overhead imposed by the high volume of TCP connections.

Application protocol optimization - Talari SD-WAN appliances use WAN optimization to manage chatty application protocols locally to avoid WAN congestion. Protocol-specific optimizations are for chatty applications that send many small, synchronous commands (e.g, reads or writes). Application examples that benefit from Talari’s application protocol optimization include CIFS, FTP, HTTP, AFP, NFS, SQL and others.  Talari protocol optimizations read in data, in different sized chunks, based on protocol and file size to optimize the transfer of data across the WAN.

Talari WAN optimization benefits

  • Increase WAN bandwidth utilization and application throughput
  • Accelerate data replication traffic across the WAN
  • Remove adverse effects of distance that cause latency
  • Get the most out of bandwidth expenditures with SD-WAN multi-path overlay of commodity links
  • Improve server capacity by offloading compute-intensive TCP turns