Chapter 5: Building a SummitStack Configuration
Summit Family Switches Hardware Installation Guide
202
Summary of Conditions for Alternate Stacking Ports
Alternate stacking ports must be 10-Gbps Ethernet ports. In addition, specific switch models have the
requirements listed in this section.
Summit X480-24x None (VIM has only data
ports)
S3 (29) S4 (30) VIM2-10G4X
module
None (no installed VIM) 25 26 Front panel
VIM2-SummitStack module
VIM2-SummitStack128 module
VIM2-SummitStack-V80
module
VIM3-40G4X
25 26 Front panel
Summit X480-48t
Summit X480-48x
None (VIM has only data
ports)
S3 (51) S4 (52) VIM2-10G4X
module
NOTE: The Summit X480-48t or X480-48x switch must have an installed VIM2-10G4X
to configure alternate stacking ports. Alternate stacking ports are not supported with
the VIM3-40G4X.
Summit X650-24t None (VIM has only data
ports)
31 32 VIM1-10G8X
module
VIM1-SummitStack or
VIM1-SummitStack256
module.
23 24 Front panel
VIM3-40Gx module (S3, S4) 23 24 Front panel
Summit X650-24x None (VIM has only data
ports)
31 32 VIM1-10G8X
module
VIM1-SummitStack or
VIM1-SummitStack256 module
24 23 Front panel
VIM3-40Gx module (S3, S4) 23 24 Front panel
Summit X670-48x None 47 48 Front panel
NOTE: Ports 45 and 46 are not available as data ports when the alternate stacking
ports are used.
Summit X670V-48x VIM4-40G4X module 47 48 Front panel
NOTE: Ports 45 and 46 are not available as data ports when the alternate stacking
ports are used.
Summit X670V-48t VIM4-40G4X module 47
(fiber medium
only)
48
(fiber medium
only)
Front panel
NOTE: Ports 45 and 46 are not available as data ports when the alternate stacking
ports are used.
Summit X750-32q QSFP+ 103 104 Front panel
NOTE: Ports 103 and 104 are not available as data ports when the alternate stacking
ports are used.
Table 64: Alternate Stacking Ports (Continued)
Switch Model
Type or location of Native
Stacking Ports
Alternate
Stacking
Port 1
Alternate
Stacking
Port 2
Location of
Alternate Stacking
Ports
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