Extreme Networks Summit X150 Series Hardware Installation Manual page 177

When you connect distant nodes using alternate stacking ports, be sure to run the cables over
physically different pathways to reduce the probability of a cut occurring to both links.
See the following table for the ports that are available on each switch model that supports this feature.
For each switch model, the column labeled Alternate Stacking Port 1 shows the switch port that
replaces native stacking port 1, and Alternate Stacking Port 2 lists the switch port that replaces native
stacking port 2. Switch models that are not listed in the table do not support the SummitStack-V
feature.
Note
The SummitStack-V feature is supported only on switches that are running ExtremeXOS 12.5.1
(or later).
Table 86: Alternate Stacking Ports
Switch Model
Summit X440-24t-10G
Summit X440-24p-10G
Summit X440-24x-10G
Summit X440-48t-10G
Summit X440-48p-10G
Summit X450a-24t
Summit X450a-24tDC
Summit X450a-24x
Summit X450a-24xDC
Summit X450a-24p
Summit X450e-24t
Summit X450a-48t
Summit X450a- 48tDC
Summit X450e-48p
Summit X460-24t
Summit X460-24x
Summit X460-24p
Summit X460-48t
Summit X460-48p
Summit X460-48x
Summit X480-24x
Summit Family Hardware Installation Guide
Type or location of Native
Stacking Ports
None (has only data ports)
NOTE: Ports 25 and 26 are not available as data ports when the alternate stacking
ports are used.
None (has only data ports)
NOTE: Ports 49 and 50 are not available as data ports when the alternate stacking
ports are used.
Fixed (rear panel)
Fixed (rear panel)
SummitStack module
SummitStack-V80 module
SummitStack module
SummitStack-V80 module
SummitStack module
SummitStack-V80 module
None (VIM has only data ports)
None (no installed VIM)
VIM2-SummitStack module
VIM2-SummitStack128 module
VIM2-SummitStack-V80 module
VIM3-40G4X
Alternate Alternate Location of Alternate
Stacking Stacking Stacking Ports
Port 1 Port 2
25 26 Front panel
49 50 Front panel
25 26 XGM2-2xf option card
XGM2-2xn option card
XGM2-2sf option card
XGM2-2bt option card
49 50 XGM2-2xf option card
XGM2-2xn option card
XGM2-2sf option card
XGM2-2bt option card
S1 (29) S2 (30) XGM3-2sf option card
S1 (53) S2 (54) XGM3-2sf option card
S1 (49) S2 (50) XGM3-2sf option card
S3 (29) S4 (30) VIM2-10G4X module
25 26 Front panel
25 26 Front panel
Building Stacks
177