Understanding Hitless Upgrade-Blackdiamond 10K Switch Only; Performing A Hitless Upgrade - Extreme Networks ExtremeWare XOS Guide Manual
Concepts guide
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- Command reference manual (2024 pages) ,
- Manual (698 pages) ,
- Command reference manual (1712 pages)
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NOTE
When you configure a timed reboot of an MSM, use the
Understanding Hitless Upgrade—BlackDiamond 10K
Switch Only
ExtremeWare XOS 11.1 introduces the concept of hitless upgrade. Hitless upgrade is a mechanism that
allows you to upgrade the ExtremeWare XOS software running on the switch without:
Taking the switch out of service
●
Losing traffic
●
Interrupting network operation
●
You must have two MSMs installed in your switch to perform a hitless upgrade. With two MSMs
installed in the switch, one assumes the role of primary and the other assumes the role of backup. The
primary MSM provides all of the switch management functions including bringing up and
programming the I/O modules, running the bridging and routing protocols, and configuring the switch.
The primary MSM also synchronizes its configurations with the backup MSM which allows the backup
to take over the management functions of the primary.
NOTE
If you download an image to the backup MSM, the image passes through the primary MSM before the image is
downloaded to the backup MSM.
Performing a Hitless Upgrade
The steps described in this section assume the following:
You have received the new software image from Extreme Networks, and the image is on either a
●
TFTP server, PC, or an external compact flash memory card. See
page 419
for more information.
You are running ExtremeWare XOS 11.1 or later on both MSMs installed in the switch. Earlier
●
versions of ExtremeWare XOS do not support hitless upgrade.
Summary Steps
To perform a hitless upgrade to install and upgrade the ExtremeWare XOS software on your system,
follow these steps:
1 Determine your selected and booted image partitions.
2 Specify the partition to download the image to (and the partition to boot from after installing the
image).
3 Download and install the new ExtremeWare XOS software on the backup MSM.
4 Initiate failover from the primary MSM to the backup MSM.
5 Download and install the new ExtremeWare XOS software on the new backup MSM.
ExtremeWare XOS 11.1 Concepts Guide
Understanding Hitless Upgrade—BlackDiamond 10K Switch Only
command to see the scheduled time.
show switch
"Downloading a New Image" on
423
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