3Com S27x, S26x, S24x installation manual Regional, Concentrator

Applications

Regional	In Figure 1-3,the public network (Frame Relay/X.25) is performing the branch
Concentrator	concentration function with the PathBuilder S24x, 26x, and 27x switch routing the
	traffic to the appropriate end point. In Figure 1-4, the PathBuilder S24x, 26x, and
	27x switch acts as the regional concentrators, receiving traffic from dozens and even
	thousands of remote sites, and concentrating the traffic before forwarding it to the
	correct location. In this case, the PathBuilder S24x, 26x, and 27x switch is the
	regional site.
	In both examples, the PathBuilder S24x, 26x, and 27x switch could be either a single
	node or a group of nodes networked together as a cluster. The PathBuilder S24x, 26x,
	and 27x switch’s cluster feature is described below.

Branch 1

PB S200

Frame Relay

or X.25

Branch XX

PB S200

Central Site

PB S200

(Single Node or Cluster)

PBX

Host

Figure 1-3. Regional Concentrator With Public Network Example

1-4 About the PathBuilder S24x, 26x, and 27x switch