Using The Summitstack-V Feature - Extreme Networks Summit X150 Series Hardware Installation Manual

Building a SummitStack Configuration

Using the SummitStack-V Feature

Figure 111 shows an example of a stacking configuration that combines native and alternate stacking
ports to form a stack of seven switches.
The Summit X650 series switches in slots 1 and 2 are connected through their native stacking ports on
installed VIM1-SummitStack256 modules, using SummitStack128 stacking cables. Each Summit X650
series switch is connected through an alternate stacking port to an installed XGM2-sf option card in a
Summit X450a series switch at another location. These connections use fiber cables connected to
10-Gbps SFP+ ports.
The Summit X450a series switches in slots 3, 4, and 5 are connected through their native stacking ports
using SummitStack 40G cables. The Summit X450a switch in slot 5 is connected to the switch in slot 6
through alternate stacking ports on installed XGM2-2sf modules, using fiber optic cable. The switch in
slot 6 is connected to the switch in slot 7 using native stacking ports and SummitStack 40G cables.
Figure 111: Using the SummitStack-V Feature
Slot 2
Slot 3
Table 58 lists the recommended port connection sequence for this example.
Table 58: Stacking Connections Using Native and Alternate Stacking Ports (7-Switch Stack)
Connect this slot and port . . .
Slot 1 Native Stack Port 2
Slot 2 Alternate Stack Port 2
Slot 3 Native Stack Port 2
Slot 4 Native Stack Port 2
Slot 5 Alternate Stack Port 2
Slot 6 Native Stack Port 2
Slot 7 Alternate Stack Port 2
164
X650 Switches
Slot 5
X450a Switches
Slot 4
. . . To this slot and port
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Slot 1
Slot 1
Slot 6
Native Stack Port 1
Alternate Stack Port 1
Native Stack Port 1
Native Stack Port 1
Alternate Stack Port 1
Native Stack Port 1
Alternate Stack Port 1
Summit Family Switches Hardware Installation Guide
Slot 7
SH_230