Installation Guide

For a complete listing of compatible cables and optical transceivers, see the Extreme Optics
Compatibility website.
To use alternate stacking on a Summit X460 switch, you must install an XGM3-2sf, XGM3S-2sf, or
XGM3S-2xf port option card to add 10-Gbps ports to the switch. Table 126 shows which port option
cards are compatible with each X460 switch model for alternate stacking.
Table 126: Alternate Stacking Ports for X460 Switches
Switch Model Type or location of Native
Stacking Ports
Alternate Stacking
Ports
Location of Alternate
Stacking Ports
X460-24t
X460-24x
X460-24p
SummitStack module or
SummitStack-V80 module
S1,S2
(29,30)
XGM3-2sf or
XGM3S-2sf or
XGM3S-2xf
X460-48t
X460-48p
SummitStack module or
SummitStack-V80 module
S1,S2
(53,54)
XGM3-2sf or
XGM3S-2sf or
XGM3S-2xf
X460-48x SummitStack module or
SummitStack-V80 module
S1,S2
(49,50)
XGM3S-2sf or
XGM3S-2xf
X460-G2 Stacking
The stacking-support option is enabled by default for X460-G2 switches. For more information, see
Enabling and Disabling the Stacking-Support Option on page 252.
The stacking port selection option, which allows you to choose between native and alternate ports, is
enabled by default for X460-G2 switches. For more information, see Selecting Native and Alternate
Stacking Ports on page 275.
Table 127: Stacking Methods for X460-G2 Switches
Stacking Method Speed per Link (HDX) Cable Type and Lengths
SummitStack
(rear panel, with VIM)
See Native Stacking for X460-G2 Switches on
page 261.
10 Gbps 0.5m, 1.5m, 3.0m, 5.0m
SummitStack-V160
(rear panel, with VIM)
See Native Stacking for X460-G2 Switches on
page 261.
40 Gbps QSFP+
SummitStack-V
(front panel 10G models)
See Alternate Stacking for X460-G2 Switches
on page 262.
10 Gbps 0.5m–40km
SFP+
Native Stacking for X460-G2 Switches
X460-G2 1-gigabit switch models (GE4) support native stacking through an attached VIM-2ss or
VIM-2q module.
The VIM-2ss module permits stacking using the standard SummitStack cables. With this module it is
possible to stack with X460 and X480 switches.
Building Stacks
Stacking Considerations for Each Switch Model
Summit Family Hardware Installation Guide 261