Chapter 7. Upgrading EOS
Upgrading EOS is a simple process. In a nutshell, get the software
image onto the switch, configure the switch to see the new image, and then
reboot the switch. Let’s start by taking a look at the current version of EOS on our
7124S switch by using the
sho verArista DCS-7124S-F Hardware version: 06.02 Serial number: JSH10170315 System MAC address: 001c.7308.80ae Software image version: 4.7.8 Architecture: i386 Internal build version: 4.7.8-535760.EOS478 Internal build ID: 530a4112-b24f-40ef-bbe2-8c4b139a797d Uptime: 4 days, 20 hours and 4 minutes Total memory: 2042400 kB Free memory: 891220 kB
We can see from this output that our switch is running EOS version 4.7.8.
Check out the model number in the first line of output, which reads DCS-7124S-F. The -F indicates that this switch shipped with front-to-rear airflow fans. If the model number had a -R appended to it, the fans would be rear-to-front. Cool, huh? Well I think it is, but then, little things like this excite me.
If we felt like poking around further where we don’t belong (and who
doesn’t?), then we could use the
detail command, which will regale us with page upon page of
process names and their requisite versions:
sho version detailArista DCS-7124S-F Hardware version: 06.02 Deviations: D0000213, D0000203 Serial number: JSH10170315 System MAC address: 001c.7308.80ae Software image version: 4.7.8 Architecture: i386 Internal build version: 4.7.8-535760.EOS478 ...