Available Stacking Methods

Each Summit switch model can use various methods of stacking.

Summit Stacking by Stacking Method shows the switch models that can participate in each stacking method.

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Summit Stacking by Stacking Method

Stacking Method Speed per Link (HDX) Cable Type and Lengths Switch Models
SummitStack 10 Gbps 0.5 m, 1.5 m, 3.0 m, 5.0 m,

20 Gb Stacking Cable

Summit X440, X460, X460-G2, X480

SummitStack-V 10 Gbps 0.5 m - 40 km

SFP+, XENPAK (with SR, LR, and ER)

Summit X440

Summit X450-G2 (10G models)

Summit X460 (with XGM3-2sf, 2xsf),

Summit X460-G2 (1G models with VIM-2x, VIM-2t)

Summit X460-G2 (10G models)

Summit X480 (VIM2,3)

Summit X670 and X670V (ports 47 and 48),

Summit X670-G2

Summit X770 (ports 103,104)

SummitStack-V80 20 Gbps 0.5 m - 100 m

QSFP+ only

Summit X460 (SSv80)

Summit X480 (VIM2,3)

Summit X670V (VIM4-40G4X)

Summit X670-G2-48x-4q (ports 57, 61)

SummitStack-V84 21 Gbps 0.5 m - 5 m

QSFP+ passive copper

Summit X450-G2 (rear panel 21G stacking ports)
SummitStack-V160 40 Gbps 0.5 m - 100 m

QSFP+ only

X460-G2 (VIM-2q)

Summit X480 (VIM3)

Summit X670 (VIM4)

Summit X670-G2-48x-4q (ports 57, 61)

Summit X770 (ports 103 and 104)

SummitStack-V320 80 Gbps

1

0.5 m - 100 m

QSFP+ only

Summit X480 (VIM3)

Summit X670 (VIM4)

Summit X670-G2-48x-4q (ports 49, 53, 57, 61)

Summit X770-32q (ports 101 and 103, and 102 and 104)

SummitStack128 32 Gbps 0.5 m, 1.5 m, 3.0m Summit X480 (VIM2-SS128)

2

For more details about the stacking methods that are available for each switch series, see the topics listed in Stacking Considerations for Each Switch Model.

Note

Note

Because all switches in the stack must run the same version of ExtremeXOS, it is not possible to stack switches that require ExtremeXOS version 21, for example the X440-G2 and the X620, with switches that are incompatible with ExtremeXOS version 21, for example the X440 and the X460.

1 Combined over paired ports
2 The VIM2-SS128 module can be used for stacking X480 switches. It can also stack with SS256 with a conversion cable.