Installation guide

Installing Summit Family Switches

Summit Family Switches Hardware Installation Guide

Building a SummitStack Configuration

If you intend to use the SummitStack feature, read this section before installing the set of Summit family

switches that will be included in the SummitStack configuration. A stack consists of a group of up to

eight Summit switches that are connected together using stacking cables to form a connected ring, as

shown in Figure 42.

Figure 42: Summit Switches Connected in a SummitStack Configuration

The stacking cables are available from Extreme Networks. Table 14 lists the stacking cables available at

this time.

Slot Numbers

Each switch (or node) in the stack is assigned a “slot number” during the initial software configuration

of the stack. Starting at the switch with the console connection, numbers are assigned in numerical

order following the physical path of the connected stacking cables. For example, if you follow the

cabling recommendations presented in “Connecting the Switches to Form the Stack Ring” on page 69

and configure the stack from the console on the switch at the top of the physical stack, the switches will

be assigned numbers 1 through 8 from the top down.

Each Summit switch has a seven-segment LED on its front panel, called the stack number indicator.

When a stack is operating, the indicator displays the slot number for the switch. (This LED does not

light on switches that are not operating in stacking mode.) A quick way to verify that the cable

connections match the software configuration is to check the stack number indicator on each switch. If

the slot numbers do not line up in the order you arranged the switches, this may indicate that the

stacking cable setup differs from what you intended when you configured the software. In this case,

reconnect the cables in the correct order and perform the software configuration again.

Table 14: Available SummitStack Stacking Cables

Part Number Description Length

16106 SummitStack/UniStack cable 0.5 meter (1.6 ft)

16107 SummitStack/UniStack cable 1.5 meters (4.9 ft)

16108 SummitStack/UniStack cable 3 meters (9.8 ft)

16105 SummitStack cable 5 meters (16.4 ft)

Stack Port 1 Stack Port 2

BD_165C

Summit

switches

SummitStack

cables