Hubbing

Overview

The Alcatel-Lucent 1665 DMX hubbing topology provides metropolitan-area and regional-area network infrastructures based on a single NE.

Description

An Alcatel-Lucent 1665 DMX high-speed UPSR ring can serve as a core feeder ring, transporting voice and data from metropolitan networks to the optical core network and vice versa.

As shown in Figure 3-39, Hubbing application, one Alcatel-Lucent 1665 DMX node is configured as a core feeder node, providing a conduit from the optical core to the OC-48/192 access network. On the ring, another Alcatel-Lucent 1665 DMX is configured as the hub node, where several Alcatel-Lucent 1665 DMX and DDM UPSR rings are terminated. The hub node grooms the traffic and cross-connects it to the appropriate ring.

One Alcatel-Lucent 1665 DMX can be configured as a hub node for up to 80 OC-3 rings, 40 OC-12 rings, 20 OC-48 rings, or, as pictured below, a mixture of high- and low-speed rings.

Figure 3-39: Hubbing application

Configuration advantage

Hubbing provides High-Capacity, low-cost grooming between multiple optical rings. It also provides greater flexibility and efficiency in serving large numbers of customers on multiple fiber rings.