Installation Guide

In a stack that has switch models from more than one Summit series, refer to the list in Master/Backup
Switch Redundancy on page 239 and follow these guidelines:
• The stack master and backup nodes should be from the same switch series. For example, if a
Summit X480 series switch is the stack master, the backup node should also be a Summit X480
series switch.
• Follow these guidelines for the specific listed switch combinations:
◦ If Summit X480 series and X650 switches are both present in the stack, the master and backup
nodes should both be X480 switches.
◦ If Summit X480 switches and X670 switches are both present in the stack, the master and
backup nodes should both be X670 switches.
• Although you can combine Summit X460, X480, and X670 switches in a stack, you should be aware
that the routing table limit for the Summit X460 series is lower than the limits for the other two
switch series. For more information, refer to the ExtremeXOS 16.2 User Guide.
Stack
configuration, easy setup, and redundancy are fully described in the ExtremeXOS 16.2 User Guide.
Selecting Stacking Cables
Depending on the switch model and the number and type of stacking ports, the bidirectional stacking
link provides 40 Gbps, 80 Gbps, or 160 Gbps full-duplex bandwidth.
Depending on the switch model and the number and type of stacking ports, the bidirectional stacking
link provides 40 Gbps, 80 Gbps, 128 Gbps, 160 Gbps, 256 Gbps, or 512 Gbps full-duplex bandwidth.
Stacking connections using the native stacking ports require stacking cables that are specific to the
type of stacking port. These cables are available from Extreme Networks in lengths from 0.5 meter to
100 meters.
Table 149 lists the cable types that have been verified by Extreme Networks for use as stack connection
hardware, along with the switches or modules with which each type is compatible.
Caution
Use of non-recommended cables or optics could cause stack instability.
Note
You can use certain other fiber cables and optical transceivers for stacking on X590, X690,
and X870 switches. Additional configuration is required. For details, see Alternative
Configuration for Optics on X590, X690, and X870 Switches on page 284.
Table 149: Available Stacking Cables for Extreme Networks Switches
Part
Number
Cable Type, Length Compatible Ports and Devices
16105 SummitStack, 5 meter 20-Gbps stacking ports on VIM-2ss on X460-G2
switches
20-Gbps fixed stacking ports on X250e, X440
(except 10G models) X450, X450a, X450e, and X460
(with stacking module) switches, 20-Gbps stacking
ports on VIM-2ss on X460-G2 switches, 20-Gbps
stacking ports on VIM1-SummitStack or VIM1-10G8X
16106 SummitStack, 0.5 meter
16107 SummitStack, 1.5 meter
Building Stacks Selecting Stacking Cables
Summit Family Hardware Installation Guide 281