Internetwork

The Frontier Optronics Network now encompasses 11 hub cities. The northern route connects Los Angeles, San Francisco, Kansas City, Cleveland, and New York City at OC-48c or 2.5 Gbps speeds. A second backbone, through the South, connects Los Angeles, San Diego, Dallas, Atlanta, Washington D.C., and New York City—also at OC-48c. The two routes are joined together in a ring architecture, giving the backbone extended reliability and failover protection—a clear advantage over linear route networks (See Figure 1).

Optical Internet Benefits: Scalability and Simplicity

The hierarchical design of IP hubs in the Frontier Optronics Network provides Frontier with a robust and scalable infrastructure. At the highest level, redundant wide-area routers (WR1 and WR2) connect to the IP backbone at OC-48 speeds. At the middle layer, core routers (CR1 and CR2) connect lower layers to the WR routers at OC-12 speeds. At the lowest layer, an assortment of routers deliver specialized services: access routers (AR1) aggregate T1, T3 and OC-3 traffic; border routers (BR1) provide peering connections with other Internet providers; hosting routers (HR1) provide hosting services for web content; and dial routers (DR1) handle lower-speed customer access.

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