Adding Peribit Networks' new SR-100 appliance to your WAN link is an excellent way to increase bandwidth without buying more capacity. Our recent test of the SR-100 showed the appliance scales upwards in amazingly flexible patterns, offers a high degree of reliability, and installs quickly and painlessly. These features earn the SR-100 a Clear Choice Award.

Imagine your network infrastructure as a fleet of trucks traveling across a major highway. While the cargo is important, these trucks are often nearly empty. Telco WAN link charges are the equivalent of highway tolls that can cost your company an arm and a leg.

WAN link compression devices such as the Peribit SR-100 let you reduce the number of trucks being sent yet deliver the same cargo to each destination. You spend less on both highway tolls and truck maintenance.

Frugal WAN usage

We installed a pair of SR-100s, in combination with up to four SR-50 appliances as compression subprocessors, on our lab's six-segment Fast Ethernet network (see How we did it ).

The SR-100's ability to quickly and thoroughly compress data at one end of a link and fluff it back up at the other (you buy Peribit devices in pairs and typically connect each one between a switch and a router) is impressive. We used FTP, server-based file copying of 1M-, 10M- and 50M-byte files, e-mail traffic and Web server accesses to test the SR-100's performance. In each test, a pair of SR-100s typically increased WAN link bandwidth by a compression factor of 5.2, and it did so at wire speeds, without introducing delay (see Table 1, below).

By themselves, SR-100s are formidable tools for increasing the amount of data a WAN link carries. For the sake of scalability, however, an SR-100 can attach to the WAN through other Peribit devices, such as the SR-50, which the SR-100 uses as compression subprocessors (Peribit calls them SR-100 clients). Moreover, Peribit says an SR-100 can connect to up to 2,000 other Peribit devices across as many WAN links and can handle network traffic at rates of up to 155M bit/sec. In our tests, we achieved aggregate throughput of 8.2M bit/sec through a T-1 link when we attached two SR-50 devices to each SR-100.