Extreme Networks BlackDiamond 6800 User Manual page 12

Performing a Hitless Upgrade
• MSM-A is the MSM-3 installed in slot A
• MSM-B is the MSM-3 installed in slot B
• You are running ExtremeWare 7.1.1 or later and BootROM 8.1 or later (see the ExtremeWare 7.1.1
Release Notes for more information)
• You configured the system for hitless failover operation (see "Configuring Hitless Failover" on
page 5 for more information)
NOTE
If you have an active Telnet session and initiate a hitless failover on that switch, the session disconnects
when failover occurs.
To failover to the same, new software image, do the following:
1 Download the new software image to the primary image space using the following command:
download image [<hostname> | <ip address>] <filename>
where the following is true:
• —Specifies the hostname of the TFTP server from which the image should be obtained
hostname
(DNS must be enabled to use this option)
• —Specifies the IP address of the TFTP server from which the image should be
ip address
obtained
• —Specifies the filename of the new software image
filename
The primary image loads on both the master and slave MSM.
2 To use the new software image on the slave, you must reboot the slave before the failover can take
place.
Reboot MSM-B using the following command:
reboot slot msm-b
where specifies the slave MSM-3 installed in slot B.
msm-b
After you reboot the slave, the new software image begins running on the slave.
The master downloads it's configurations, FDB entries, etc. to the slave. After the master finishes it's
download, the following message is logged:
Slave MSM initialized for hitless failover operation.
3 Verify that the correct BootROM and ExtremeWare version are loaded using the
commands.
show version
4 Initiate failover using the following command:
run msm-failover
MSM-B becomes the master and runs the new software image. MSM-A becomes the slave and also
runs the new software image.
5 Verify the slave state using the following command:
show msm-failover
You can also verify the slave state by viewing the syslog. To view the syslog, use the following
command:
show log
12
and
show switch
Hitless Failover and Hitless Upgrade User Guide