Extreme Networks 17001 manual Combining Different Types of Stacking Ports

Figure 74 shows five switches installed at the tops of five adjacent racks. To accommodate the shortest possible cables, immediately adjacent switches are not always connected together. Port 2 on one switch is connected to Port 1 on the next connected switch. If the easy setup feature is used to configure the stack parameters, the assigned slot numbers will be as shown in the figure.

Figure 74: Top-of-Rack Stack Installation

Rack A Rack B Rack C Rack D Rack E

SH_173

Slot 1 Slot 2 Slot 5 Slot 3 Slot 4

Table 23 lists the recommended order for connecting the stacking ports in this example.

Table 23: Recommended Stacking Port Connections (5-Switch Stack in Five Adjacent Racks)

Connect this slot and port . . .			. . . To this slot and port
1	Rack A	Port 2	Slot 2	Rack B	Port 1
2	Rack B	Port 2	Slot 3	Rack D	Port 1
3	Rack D	Port 2	Slot 4	Reck E	Port 1
4	Rack E	Port 2	Slot 5	Rack C	Port 1
5	Rack C	Port 2	Slot 1	(Rack A	Port 1

Combining Different Types of Stacking Ports

Using special conversion cables, you can build a SummitStack configuration that combines 40-Gbps stacking connections with 256-Gbps connections or with 128-Gps connections. Figure 75 shows a sample configuration using the following switches:

●Summit X650 series switches with installed VIM1-SummitStack256 modules

●Summit X450a series switch with integrated SummitStack ports

●Summit X480 series switch with installed VIM2-SummitStack module

Summit Family Switches Hardware Installation Guide 105