Installation Guide

Native Stacking for X480 Switches
For Summit X480 native stacking, install VIM2 or VIM3 versatile interface module (VIM) into the rear of
the switch. See #unique_157 for more information about the VIMs supported.
The VIM3-40G4X module can be used for native stacking with a Extreme Networks certified 40G QSFP
+ cable. Other SummitStack ports require standard SummitStack cables.
For a complete listing of compatible cables and optical transceivers, see the Extreme Optics
Compatibility website.
Note
Stack Port 1 is port S3 and Stack Port 2 is port S4 on the VIM3-40G4X.
Alternate Stacking for X480 Switches
Summit X480-48t and X480-48x switches do not have 10-Gbps ports on the base model switch. To use
the SummitStack-V feature on these switches, you must install a VIM2-10G4X module – after which
ports S3 (51) and S4 (52) can be configured as alternate stacking ports. Alternate stacking ports are not
supported with the VIM3-40G4X.
On an X480-24x switch with an installed VIM2-10G4X module, you can configure ports S3 (29) and S4
(30) as alternate stacking ports for the SummitStack-V feature. If you use a VIM3-40G4X module for
stacking, ports 25 and 26 are configured as the alternate stacking ports.
On an X480-24x switch with installed native stacking ports on a VIM2 module, you can do either of the
following:
• Configure both ports 25 and 26 on the switch front panel as alternate stacking ports.
•
Configure one alternate stacking port on the switch front panel and use a native stacking port on the
installed VIM2 module.
On an X480-24x switch with no installed VIM2 module, you can configure ports 25 and 26 on the switch
front panel as alternate stacking ports.
Table 131 summarizes alternate stacking support for X480 switches.
Table 131: Alternate Stacking Ports for X480 Switches
Switch Model Type or location of Native
Stacking Ports
Alternate Stacking
Ports
Location of Alternate
Stacking Ports
X480-24x None: VIM has only data ports S3,S4
(29,30)
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
X480-48t
X480-48x
None: VIM has only data ports S3,S4
(51,52)
VIM2-10G4X module
Stacking Considerations for Each Switch Model Building Stacks
266 Summit Family Hardware Installation Guide