Adder Technology Switch manual Addressing computers in a cascade, 

Addressing computers in a cascade

The addressing format used by the switches incorporates the various group numbers along with a final specific port number to which a required computer is attached. In the diagram given here, a portion of the previous cascade diagram indicates how the routes to particular computers are formed and addressed.

Each cascade level requires two digits, hence the computer marked in red requires a unique address with eight digits because it is at cascade level 4, compared to the green computer at level 2 with its four digit unique address. A computer connected directly to the SmartView World at the top level would simply have a two digit port number.

The group at level 2 is numbered 43 because it is a group of four, connected to ports 9, 10, 11 and 12 on the SmartView World. If it was connected to ports 13, 14, 15 and 16, then the group number would be 44.

If the group at level 3 was a group of two, connected to ports 1 and 2 of the switch, then the group number would be 21. Similarly, if it was a group of three connected to ports 1, 2 and 3, then the group number would be 31 – this would make the address of the red computer: 41 43 31 02.

While the SmartView World has four user ports, one of those is a dedicated IP port that cannot be fed to a switch above (i.e. it can feed a maximum of three cascade links upwards). For this reason, the natural position for the SmartView World is as the master unit with other switch types, most suitably the Adder SmartView XPro units, feeding up into it.

To connect switches in a cascade arrangement

Note: This procedure may be carried out in any order but for clarity this instruction will begin at the higher level switch (here called the upper switch), i.e. the one that is being fed into by a switch at the cascade level below (here called the lower switch). The procedure given here remains the same regardless of exactly which cascade levels are being connected. The basic rule is that each link is made by connecting a computer port of the upper switch to a user port of the lower switch.

1Ensure that power is disconnected from the SmartView World and all other switches to be connected.

2Locate sufficient KVM cable sets of similar lengths (as short as possible) to form the required link group.

3Connect the plugs at one end of a KVM cable set to the keyboard, video and mouse sockets

of an appropriate Computer port on the rear panel of the upper switch. Refer to the Group numbering diagrams for the correct link group boundaries.

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