Extreme Networks 17001 manual Connecting the Switches to Form the Stack Ring

Switches from some Summit series have more memory than other Summit models and support additional features. If the stack combines switches from different Summit series, follow these additional guidelines:

●To support the additional capabilities in a stack that includes multiple Summit switch series, the most capable switches should be the master and backup nodes.

●If a Summit X480 series switch is the stack master, the backup node should also be a Summit X480 series switch.

●If a Summit X650 series switch is the stack master, the backup node should also be a Summit X650 series switch.

●If Summit X480 series and X650 series switches are both present in the stack, the master and backup nodes should both be Summit X480 series switches.

Connecting the Switches to Form the Stack Ring

After you have installed the individual Summit switches (see Chapter 5), connect the switches together using the stacking cables. The examples in this section show cable connections and the recommended order for connecting ports to facilitate the easy setup configuration.

In general, it is best to connect Stack Port 2 on one switch to Stack Port 1 on the switch with the next higher slot number. Although you can connect the switches in any order, connecting them as shown in these examples will produce better predictability and easier software configuration. It is essential to create an unbroken data path through all the switches in the stack.

NOTE

The connection recommendations in this section do not apply to Summit X650 series switches with installed VIM1-SummitStack512 modules. For information about connecting the ports on the VIM1-SummitStack512 modules, see “Using the VIM1-SummitStack512 Module” on page 107.

For instructions to connect specific types of stacking cables, see “Connecting Stacking Cables” on page 108.

Using SummitStack Ports and 40G Stacking Cables

SummitStack ports are integrated into the back panel of the Summit X250e, X450, X450a, and X450e series switches. In addition, the X480 series switches and X650 switches accommodate VIMs that provide SummitStack ports.

The examples in this section show physical stacking arrangements that include all switches in a single rack, switches in two adjacent racks, and switches at the tops of several racks in a row.

Single-Rack Stacking Configurations

These examples show stacks of either four or eight switches in a single rack. The slot numbers presume a console connection to the switch at the top of the physical stack.

Figure 70 shows cable connections for a 4-node stack using SummitStack 40G cables to connect switches with integrated SummitStack ports.

Summit Family Switches Hardware Installation Guide 101