The stacking-support option is enabled by default for X480 switches except in the case of X480-24x switches with a VIM2-SummitStack, VIM2-SummitStack128, or VIM2-SummitStack-V80 module installed. For more information, see Enabling and Disabling the Stacking-Support Option.
The stacking port selection option, which allows you to choose between native and alternate ports, is enabled by default for X480-24x switches with a VIM2-SummitStack, VIM2-SummitStack128, or VIM2-SummitStack-V80 module installed. For other X480 switch configurations, the option is disabled. For more information, see Selecting Native and Alternate Stacking Ports.
| Stacking Method | Speed per Link (HDX) | Cable Type and Lengths |
|---|---|---|
| SummitStack (with VIM2-SummitStack) |
10 Gbps | 0.5m, 1.5m, 3.0m, 5.0m 20 Gb Stacking Cable |
| SummitStack-V (with VIM2-10G4X) |
10 Gbps | 0.5m–40km XFP |
| SummitStack-V80 (with VIM2-SSV80 and VIM3-40G4X) |
20 Gbps | 0.5m–100m QSFP+ only |
| SummitStack-V160 (with VIM3-40G4X) |
40 Gbps | 0.5m–100m QSFP+ only |
| SummitStack-V320 (with VIM3-40G4X) |
80 Gbps | 0.5m–100m QSFP+ only |
| SummitStack128 (With VIM2-SS128) |
32 Gbps | 0.5m, 1.5m, 3.0m |
For Summit X480 native stacking, install VIM2 or VIM3 versatile interface module (VIM) into the rear of the switch. See 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.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 no installed VIM2 module, you can configure ports 25 and 26 on the switch front panel as alternate stacking ports.
Alternate Stacking Ports for X480 Switches summarizes alternate stacking support 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 |