Thinklogical Router - ASCII-API - Manual (Page 15)

VxRouter Port Numbering
When making or breaking connections, it is important to identify the 'direction' of the connection. In this context, connection
direction refers to data flow from the extender transmitter to the extender receiver, or receiver to transmitter. Transmitter to
receiver data flow is called an 'upstream to downstream' connection and a receiver to transmitter data flow is a 'downstream to
upstream' connection.
The Vx40 is actually an 80 port switch. It can be thought of as having 80 upstream ports (similar in design to the upper half of
the Vx320).
The Vx160 has I/O cards labeled Upstream and Downstream. The Vx320 has two cards shelves. The upper shelf holds the
upstream ports and the lower holds the downstream ports.
The Vx160 only allows connections between upstream and downstream ports. You may not connect an upstream port to an
upstream port or a downstream port to a downstream port.
The Vx320 only allows connections within a card shelf. You may not connect an upper shelf port to a lower shelf port.
The illustrations below show the port number assignments.
Vx40 / Vx80
Connections may be made between any port on any card. The labels of 'upstream' or 'downstream' are not relevant.
Vx40 ports are numbered from 1 to 80, the same as the .
Vx160
Connections may only be made between upstream input ports and downstream output ports, or downstream input
ports and upstream output ports.
Vx320
Connections may only be made between input ports and output ports on either shelf. You may not make connections
between shelves.
Vx320 Video / Hx80 / MX48 / Vx640
Connections may be made between any port on any card.
Hx576
• With one Switch card installed: connections may be made between port 1 and 288.
• With two Switch cards installed: connections may be made between ports 1 and 288 (the left side of the
switch) or ports 289 and 576 (the right side of the switch). It is not possible to connect between ports <= 288
and ports >288.
• With four Switch cards installed: connections may be made any port on any card.
Jun 12, 2014 Router ASCII API: V4.5-1 14/33