Combine Switches From Different Series; Select Stacking Cables; Use The Extreme Stacking Tool - Extreme Networks 7720 Installation Manual

Build Stacks
•
If the stack supports any feature pack license (such as MPLS or Direct Attach), that
feature pack license must be installed on all primary-capable nodes to support that
feature and to prevent traffic interruption if a failover event occurs.
•
Most stacking specific configurations are effective only after a restart. However,
most non-stacking configuration commands take effect immediately and require
no restart.
•
A basic stack configuration can be achieved by using the Easy Setup procedure, as
described in the
•
If EAPS, Spanning Tree, or any Layer 2 redundancy protocol is not running on the
network, make sure that your network connections do not form a network loop.
Follow the recommendations in
Operation

Combine Switches from Different Series

7520 Series and 7720 Series switches can be stacked with themselves. They can also
be stacked with each other using Native V400 stacking (SummitStack-V400), or Native-
V400-Alternative-configuration (using the long range AOC optics). Both the 7520 Series
and the 7720 Series have the same capability in terms of feature scalability and the
speed, so either of them can be the primary switch or the backup switch.

Select Stacking Cables

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.
Note
For the most recent information about available cables, contact your Extreme
Networks sales representative or refer to the
Caution
Use of non-recommended cables or optics could cause stack instability.

Use the Extreme Stacking Tool

The Extreme Stacking Tool provides an easy way to plan your stack. As you select
various switch models and stacking methods, the tool shows you:
•
What switch models can be stacked together and which cannot.
•
Statistics showing the routing options that are available with every stack
combination.
•
Recommendations about which switches should be the primary and backup nodes.
•
Information about the supported versions of Switch Engine for every combination.
Switch Engine 32.4 User Guide
on page 29 for physically situating your equipment.
Combine Switches from Different Series
.
Recommendations for Placing Switches for Stacked
Extreme Optics
Extreme 7720 Hardware Installation Guide
website.
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