Installation Guide

Figure 125: Combining Stacking Port Types: Example
Note
The figure is intended to show cable connections between switches. Details of the switches
themselves, such as the location of the stacking ports and fan modules, might dier from
those of the switches that actually would be used.
The following cables are used to make the stacking connections:
•
QSFP+ cable connecting the two switches at the top (slot 1 and slot 2)
•
SFP+ cable connecting the switch in slot 2 with the switch in slot 3
•
SFP+ cable connecting the switch in slot 3 with the switch in slot 4
•
SFP+ cable connecting the switch in slot 4 with the switch in slot 5
•
SFP+ cable connecting the switch in slot 5 with the switch in slot 1
Table 82 lists the recommended order for connecting the stacking ports in this example.
Table 82: Combining Stacking Port Types: Connections
Connect this slot and port . . . . . . To this slot and port
Slot 1 Stack Port 2 Slot 2 Stack Port 1
Slot 2 Stack Port 2 Slot 3 Stack Port 1
Slot 3 Stack Port 2 Slot 4 Stack Port 1
Slot 4 Stack Port 2 Slot 5 Stack Port 1
Slot 5 Stack Port 2 Slot 1 Stack Port 1
Using SummitStack-V160 Stacking
A stacking rate of 160 Gbps can be achieved using certain configurations of Extreme Networks
switches. For example, an X460-G2 switch can be connected to an X670-G2-48x-4q switch through
40-Gbps stacking connections that provide 160 Gbps full-duplex bandwidth. This connection is
performed using the VIM-2q module in the X460-G2 switch and the QSFP+ ports on the X670-
G2-48x-4q switch. V-160 stacking is also supported on the X770 switch using the QSFP+ ports.
For SummitStack V-160 on the X770, ports 103 and 104 are the stacking ports.
Building Stacks
ExtremeSwitching and Summit Switches: Hardware Installation Guide 171