The stacking-support option is enabled by default for X770 switches. 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 X770 switches. For more information, see Selecting Native and Alternate Stacking Ports.
Stacking Method | Speed per Link (HDX) | Cable Type and Lengths |
---|---|---|
SummitStack-V (ports 103 and 104) | 10 Gbps | 1m and 2m QSFP+ 4xSFP+ fan-out cable |
SummitStack-V160 (ports 103 and 104) | 40 Gbps | 0.5m, 1m, and 3m (26 AWG) QSFP+ |
SummitStack-V320 (ports 101 and 103, and 102 and 104) | 80 Gbps (combined over paired ports) | 0.5m, 1m, and 3m (26 AWG) QSFP+ |
The X770 supports SummitStack-V80, V160, and V320 stacking. Use any Extreme Networks certified 40G QSFP+ cable or optical transceiver to make the connections among the switches to be stacked.
For X770 native stacking, use the fixed 40G QSFP+ ports numbered 101, 102, 103, and 104 (shown in Location of Stacking Ports (101 through 104) on an X770 Switch).
For a complete listing of compatible cables and optical transceivers, see the Extreme Hardware/Software Compatibility and Recommendation Matrices.
Alternate Stacking Ports for X770 Switches summarizes alternate stacking support for X770 switches.
Switch Model | Type or location of Native Stacking Ports | Alternate Stacking Ports | Location of Alternate Stacking Ports |
---|---|---|---|
X770-32q | Ports 101,102,103,104 | 103,104 | Front panel |
Note
Ports 103 and 104 are not available as data ports when the alternate stacking ports are used. Ports 101 and 102 remain available to use as data ports.Before deploying a new stack with Summit X770 switches, consider the following guidelines: