Configuration Guide

Table Of Contents
©2021 Extreme Networks, Inc. All rights reserved
October 2021
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8. Migration & Upgrades
This section describes the procedures and restrictions that apply when upgrading the software load from a
prior ERS/VSP software release not supporting SPB. Also described are the procedures to follow when
services are being migrated to a configuration that exercises the SPB features. These should be interpreted
as additional and NOT as a replacement for procedures and restrictions that may be imposed by prior
releases.
8.1
Common Upgrade instructions
Verify that the hardware requirements are met.
If the switch is an ERS 8800 and uses 2 CPU cards – both CPU cards need to be rebooted.
Using 2 CPU cards with each CPU running a different release of the software is not supported.
8.2
Upgrade from Pre-5.1 releases for the ERS 8800
If the switch being upgraded is not an IST switch - SPB does not impose any additional upgrade procedures.
If the switch being upgraded is an IST switch – then both IST peers need to up-graded simultaneously.
Standard SMLT resiliency for services is not available until both the IST switches are up and running with
the new version of software.
8.3
Upgrade and SMLT Cluster
If the switch being upgraded is not an IST switch - SPB does not impose any additional upgrade procedures.
If the switch being upgraded is an IST switch – then it is possible to upgrade one IST peer at a time while
providing SMLT based resiliency to services configured on the IST peer switches. While SMLT resiliency
is provided during the upgrade – it is recommended that the both the IST peers should be upgraded in a
single maintenance window.