X870 Stacking

X870 series switches support native stacking using front-panel data ports 121 and 125. They can be stacked with other X870 switches, with X590 switches, and with X690 switches. Alternate stacking is not supported.

The stacking-support option is disabled by default for all X870 switches. For more information, see Enabling and Disabling the Stacking-Support Option.

Stacking Methods for X870 Switches summarizes stacking support for X870 switches.



Only QSFP28 direct-attach passive copper cable, at lengths up to 5 meters, can be used in X870 stacking ports.
Table 1. Stacking Methods for X870 Switches
Stacking Method Speed per Link (HDX) Cable Type and Lengths
SummitStack-V400 (Front panel ports 121,125) 106 Gbps 0.5 m – 5.0 m