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 149.
summarizes stacking support for X690 switches.
Table 72: 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 149.
Table 73: 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
Summit X770 Stacking
The stacking-support option is enabled by default for X770 switches. For more information, see
Enabling and Disabling the Stacking-Support Option
on page 149.
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
Building Stacks
ExtremeSwitching and Summit Switches: Hardware Installation Guide
160