Release Notes

4. Installation, Upgrade, and Configuration Changes
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4.2.1 License Renewal
Upgrading to Extreme Management Center version 8.4 requires you to renew
your NMS license if generated prior to November 24, 2019. Licenses generated
prior to November 24, 2019 expire 90 days after upgrading to Extreme
Management Center version 8.4.
4.2.2 Upgrading Hardware
When attempting to upgrade the Extreme Management Center server, the
ExtremeAnalytics engine, or the ExtremeControl engine to version 8.4.3, the
upgrade might not complete successfully. If the upgrade is not successful, begin
the upgrade again.
4.2.3 Free Space Consideration
When upgrading to Extreme Management Center version 8.4.3, a minimum of 15
GB of free disk space is required on the Extreme Management Center server.
To increase the amount of free disk space on the Extreme Management Center
server, perform the following:
l Decrease the number of Extreme Management Center backups (by default, saved in
the /usr/local/Extreme_Networks/NetSight/backup directory).
l Decrease the Data Persistence settings (Administration > Options > Access Control
> Data Persistence).
l Remove unnecessary archives (Network > Archives).
l Delete the files in the <installation
directory>/NetSight/.installer directory.
4.2.4 Site Discover Consideration
Discovering devices via the Site tab using a Range, Subnet, or Seed discover
might not successfully add all expected devices. To correct the issue, increase
the Length of SNMP Timeout value on the Administration > Options > Site tab in
the Discover First SNMP Request section.