Thinklogical VX Routers Manual - Manual (Page 22)

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V X R o u t e r M a n u a l R e v . O S e p t e m b e r , 2 0 1 4 Page 21
VX40 I/O Cards
The VX40 Router consists of a single 80 input by 80 output non-blocking switch matrix. This allows any port
on any I/O card (Upstream or Downstream) to be connected to any other port. The VX40 is designed so that 8
I/O card slots on the left side are used for Upstream Cards and 8 I/O card slots on the right side are used for
Downstream Cards.
The Upstream and Downstream Cards are functionally equivalent. Either card can be used interchangeably
for routing signals, but they can only physically plug into their respective slots in the VX40 chassis. Thus, the
VX40 can connect any Upstream Port optical input or any Downstream Port optical input (SFP+ R) to any
Upstream and/or any Downstream Port optical output (SFP+ T). Figure 1 below depicts a bi-directional
connection from Upstream Port 1 to Downstream Port 1. This requires two switch connections, one from the
Upstream optical input to the Downstream optical output and one from the Downstream optical input to the
Upstream optical output.
Figure 1: VX40 Input/Output Concept