Installation Guide

When the stacking-support option is enabled (with the enable stacking-support command),
data communication stops on the physical data ports that are designated for alternate stacking. Then,
when stacking is enabled (with the enable stacking command), those ports – listed in the
Alternate Stacking Ports column of Table 128 – operate using the stacking protocol for the logical
stacking ports.
Table 128: Alternate Stacking Ports for X460-G2 Switches
Switch Model Type or location of Native
Stacking Ports
Alternate Stacking
Ports
Location of Alternate
Stacking Ports
X460-G2-24t-GE4
X460-G2-24p-GE4
VIM-2ss or VIM-2q 33,34 VIM-2t or VIM-2x
X460-G2-48t-GE4
X460-G2-48p-GE4
VIM-2ss or VIM-2q 53,54 VIM-2t or VIM-2x
X460-G2-24t-10GE4
X460-G2-24x-10GE4
X460-G2-24p-10GE4
VIM-2ss or VIM-2q 31,32 Front panel
X460-G2-48t-10GE4
X460-G2-48x-10GE4
X460-G2-48p-10GE4
VIM-2ss or VIM-2q 51,52 Front panel
Note
• On X460-G2 24-port 10GE4 switches, ports 31 and 32 are not available as data ports when
the alternate stacking ports are used.
• On X460-G2 48-port 10GE4 switches, ports 51 and 52 are not available as data ports when
the alternate stacking ports are used.
Additional Stacking Considerations for X460-G2 Switches
When planning to use X460-G2 switches in a stack, note the following additional considerations:
• When using the VIM-2ss module, you can enable stacking without enabling stacking-support
because the ports are native to the switch. All other VIMs require stacking-support to be enabled.
• The X460-G2 switch has “protocol enhanced” set by default. (Older switches, such as the X460,
have “protocol standard” set by default. When you add a switch to a stack, make sure the new
switch has "protocol enhanced" set so that it can communicate with the X460-G2 switch and the
other switches in the stack.)
• Because the X460-G2 switch must run with ExtremeXOS version 15.7 or later, it cannot be stacked
with older switch series like the X250 and X450e. Those switch series are not compatible with the
ExtremeXOS levels that are required for X460-G2 switches.
• See also Summit X460-G2 (10G Models) Stack
Configuration Guidelines on page 264.
• See also Summit X460-G2 (1G Models Using VIM Ports) Stack Configuration Guidelines on page
264.
Building Stacks
Stacking Considerations for Each Switch Model
Summit Family Hardware Installation Guide 263