Each ExtremeSwitching switch model can use various methods of stacking.
Summit Stacking by Stacking Method shows the switch models that can participate in each stacking method.
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, 20Gb Stacking Cable |
Summit X460-G2 |
| SummitStack-V | 10 Gbps | 0.5 m - 40 km SFP+, XENPAK (with SR, LR, and ER) |
ExtremeSwitching X440-G2 Summit X450-G2 (10G models) Summit X460-G2 (1G models with VIM-2x, VIM-2t) Summit X460-G2 (10G models) ExtremeSwitching X620 Summit X670-G2 Summit X770 (ports 103,104) |
| SummitStack-V80 | 20 Gbps | 0.5 m - 100 m QSFP+ only |
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 X670-G2-48x-4q (ports 57, 61) Summit X770 (ports 103 and 104) |
| SummitStack-V320 | 80 Gbps | 0.5 m - 100 m QSFP+ only |
Summit X670-G2-48x-4q (ports 49, 53, 57, 61) Summit X770-32q (ports 101 and 103, and 102 and 104) |
| SummitStack-V400 | 100 Gbps | 0.5 m - 100 m QSFP28 only |
ExtremeSwitching X690 (ports
61,69) ExtremeSwitching X870 (ports 121,125) |
For more details about the stacking methods that are available for each switch series, see the ExtremeSwitching and Summit Switches: Hardware Installation Guide for Switches Using ExtremeXOS 21.1 or Later.
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.
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