Installation Guide

Table Of Contents
Stacking Considerations for Each Switch Model
The following topics list basic information and special considerations pertaining to stacking for each of
the ExtremeSwitching switch models.
X440-G2 Stacking on page 196
X450-G2 Stacking on page 197
X460-G2 Stacking on page 198
ExtremeSwitching X465 Stacking on page 202
X590 Stacking on page 203
X620 Stacking on page 203
X670-G2 Stacking on page 204
X690 Stacking on page 205
ExtremeSwitching X695 Stacking on page 206
X870 Stacking on page 206
X440-G2 Stacking
The stacking-support option is not enabled by default for X440-G2 10G switch models. For more
information, see Enabling and Disabling the Stacking-Support Option on page 193.
The stacking port selection option, which allows you to choose between native and alternate ports, is
enabled by default for X440-G2 10G switch models. For more information, see Selecting Native and
Alternate Stacking Ports on page 207.
Table 79: Stacking Methods for X440-G2 Switches
Stacking Method Speed per Link (HDX) Cable Type and Lengths
SummitStack-V
(Front panel 10G models)
10 Gbps 0.5m–40km
SFP+
Alternate stacking support is available on all X440-G2 10-gigabit models (10GE4) using two SFP+ ports,
when the switch has been enabled for stacking (enable stacking-support command). 10G
upgrade licensing is not required to enable stacking on the designated stack ports. Table 80
summarizes alternate stacking support for the various X440-G2 switch models.
Table 80: Alternate Stacking Ports for X440-G2 Switches
Switch Model Type or location of Native
Stacking Ports
Alternate Stacking
Ports
Location of Alternate
Stacking Ports
X440-G2-12t-10GE4
X440-G2-12p-10GE4
Fixed (front panel) 15,16 Front panel
X440-G2-24t-10GE4
X440-G2-24p-10GE4
X440-G2-24x-10GE4
X440-G2-24t-10GE4-DC
Fixed (rear panel) 27,28 Rear panel
X440-G2-48t-10GE4
X440-G2-48p-10GE4
X440-G2-48t-10GE4-DC
Fixed
(rear panel, dedicated SFP+ port)
49,50 Rear panel
Stacking Considerations for Each Switch Model Building Stacks
196 ExtremeSwitching Hardware Installation Guide