Note
Only QSFP28 direct-attach passive copper cable, at lengths up to 5 meters, can be used in
X690 stacking ports.
Alternate stacking is not supported for X690 switches.
The stacking-support option is disabled by default for all X690 switches. For more information, see
Enabling and Disabling the Stacking-Support Option
on page 192.
summarizes stacking support for X690 switches.
Table 91: Stacking Methods for X690 Switches
Stacking Method
Speed per Link (HDX) Cable Type and Lengths
SummitStack-V400 (Front panel ports 61,69) 106 Gbps
0.5 m – 5 m
QSFP28
SummitStack-V160 (Front panel ports 61,69)
42 Gbps
0.5 m – 5 m
QSFP28
ExtremeSwitching X695 Stacking
The stacking-support option is disabled by default for X695 switches. For more information, see
Enabling and Disabling the Stacking-Support Option
on page 192.
Table 92: Stacking Methods for the X695 Switch
Stacking method
Type or location of
dedicated stacking
ports
Speed per link
(HDX)
Cable type and lengths
ExtremeSwitching
(front panel, dedicated)
61, 62
42 Gbps
0.5m, 1.0m, 3.0m, 5.0m,
10.0m, 20.0m
QSFP
106 Gbps
0.5m, 1.0m, 3.0m, 5.0m,
10.0m, 20.0m
QSFP28
For details about the
enable stacking-support
command, see the
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
on page 192.
Building Stacks
Stacking Considerations for Each Switch Model
ExtremeSwitching Hardware Installation Guide 205