Talari - Adaptive Private Networking
Talari Networks Adaptive Private Networking technology combines diverse,
abundant, affordable IP bandwidth sources, applying a RAID-like approach to WAN
connections to solve the reliability and predictability issues associated with
shared-IP networks. The result? Next generation Enterprise WANs without
compromise:
- 30 to 100x the bandwidth per dollar
- Monthly WAN costs reduced by 40 to 90%
- Greater reliability and predictability than today's single
provider Frame Relay or MPLS WANs
The WAN Service Price-Quality Disconnect
The Enterprise WAN service market has been static for years. The introduction
of Frame Relay in the early 1990s brought lower cost, higher bandwidth, solid
reliability and easier manageability to building Enterprise WANs over the then
prevalent X.25 and point-to-point leased-line alternatives. Frame Relay,
together with similarly priced, single-source
MPLS services,
still dominate the Enterprise WAN market for corporate Intranet traffic. What
these services have in common is that enterprises buy reliable ("3½ nines,"
i.e., 99.95%, or better) service and bandwidth end-to-end from a single carrier,
at a price - on a cost-per-Mbps basis - almost as high as what they paid back in
1998!
The costs of operating carrier networks, however, have fallen in line with
Moore's Law, as have the end customer prices of alternate Internet and
broadband-based WAN solutions. Where Frame Relay or MPLS bandwidth (for branch
connectivity) costs anywhere from $400 to $1,500 per Mbps per month, broadband
connectivity such as DSL or cable is widely available at a monthly cost of only
$3 to $15 per Mbps, or even less. At the same time the bandwidth of these
broadband and Internet networks has improved, as has their reliability, even if
they are not yet "business quality", nor likely to "ever" be 99.99% reliable on
their own.
And so enterprise buyers have been quite correct in sticking with these
expensive private WAN services until now.
The Talari Networks Solution
That's where Talari Networks comes in. By solving the reliability and
predictability issues associated with shared-IP networks, in general, and the
public Internet in particular, our Adaptive Private Networking technology
enables Enterprises to gain a step-function improvement in their WAN.
In the same way that RAID (Redundant Array of Inexpensive Disks)
revolutionized high-end data storage, APN is revolutionizing corporate WANs.
Talari applies to WAN connections a unique combination of RAID-like methods and
overlay networking techniques, like those used by services such as Skype or
Vonage in delivering voice over the public Internet. By leveraging network
bandwidth from multiple sources - including both high-speed Internet connections
at central locations and broadband connections (DSL, cable where available) at
branch locations - APN allows businesses for the first time to take advantage of
the economics of broadband and the public Internet without
sacrificing business quality reliability and availability.
No one today builds monolithic, proprietary, single-disk storage solutions;
they leverage commodity PC hard disk technology and use RAID technology to get
greater capacity and performance, lower cost, and higher reliability. With
Talari Networks' Adaptive Private Networking, enterprise managers can take the
same approach to building corporate WANs. No longer must businesses purchase
overpriced, "overengineered" network services from a single telecom provider.
APN delivers more bandwidth, lower monthly WAN costs and
greater network reliability than the best single Frame Relay or
MPLS network can
provide.
APN Technology Overview
Adaptive Private Networking is a revolutionary approach to the issues
surrounding building Enterprise WANs. Unlike today's "WAN
Optimization" approaches, which presume as immutable that bandwidth must be
scarce and expensive and thus focus on compression (to save bits) and further
attempt to optimize each application for the network, APN optimizes a
more-affordable, higher-bandwidth network fabric for all applications.
APN performs dynamic, real-time, per-packet traffic engineering, and uses
RAID-like techniques and proprietary end-to-end algorithms to deliver end-to-end
reliability; protected application performance for TCP-based applications; and
ultra-reliable, cost effective support for real-time application traffic like
VoIP and videoconferencing.
It provides multi-path multiplexing for both aggregating bandwidth and
delivering end-to-end reliability, dynamically engineering around network
trouble - not just outright link failure, but high packet loss or excess latency
- as it occurs. It adapts to such "network events" within ~250 milliseconds for
domestic connections, or ~500-600 milliseconds even for longer-distance
international connections. This sub-second response is more than fast enough to
handle any IP application that can run on an IP WAN.
The intelligent actions and sub-second reaction in the face of packet loss
provide predictable, protected application performance for any TCP-based
application. APN makes the WAN look to each TCP application as if it were a
zero-packet-loss WAN with the occasional bout of jitter-something TCP and
TCP-based applications are designed to expect and accommodate without incident.
For real-time applications like VoIP and videoconferencing, APN uniquely
delivers ultra-reliable, cost-effective support. It routinely chooses network
paths with the least packet loss and lowest jitter for such high-priority
real-time traffic, and switches with sub-second response to a better path in the
face of high loss or jitter. Where bandwidth availability allows, APN provides
still further protection by replicating real-time traffic flows along a second
path, suppressing duplicates at the receiving end, delivering "platinum quality"
connectivity.
APN's sophisticated decision making is powered by two key component
technologies. Talari's
Multipath Network Spectrometry is the key enabling technology providing the
rich real-time information that lets APN work its magic.
Resilient Multipath Connectivity technology in turn delivers end-to-end
reliability and protected application performance, for both TCP-based apps and
real-time applications like VoIP and videoconferencing.
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