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mx104 upgrade and snapshot

a month ago

Hi All,

 

I have a very old mx104 that need upgrade from the 14.2R2.8 to the 17.3R3-S7 . License are installed to make active the 4 uplinks port of the router.

Upgrade path will be

 #############
 14.2 from here to
 15.1
 16.1<<< to here
 16.2
 17.1
 17.2<<< then here
 17.3<<< finall reach target release
 #############

and after upgrade i am expecting to have 2 situations:

1) license not working -> i will install back

2)License is working

 

Before performing the upgrade i want to take snapshot to use it in case of problem during the upgrade. Snapshot will recover configuration and the sw release installed at the time of the command request system snapshot was issued.

 

Question number 1: do you agree with my sw upgrade path?

Question number 2: do you see any problem between license and sw release installed? I think the 2 conecpt are not tied togheter

Question number 3: I am reading from here https://www.juniper.net/documentation/en_US/release-independent/junos/topics/topic-map/mx104-host-su... that mx104 has basically only one NAND flash (da0)  plus 2 external USB storage devices (usb0 amd usb1). Now i do not have any snapshot taken so far but when i run the command i got this error that in my opinion it makes sense because there is no NAND da1 but at the same time useless as message. Did i get correct that this message can be ignored?

 

user@mx104> show system snapshot
error: da1 media missing or invalid

 

More, if i want to take the snapshot of the current sw+config i understood that i need to install one usb pen drive on port 0 for example (USB0) and run the command

user@mx104> request system snapshot media ?
Possible completions:
  usb0                 Write snapshot to device connected to USB0 port
  usb1                 Write snapshot to device connected to USB1 port

so snapshot wil be saved on USB0.

Now, in case of problem to bring the router back as it was before, is enough to simply insert the USB0 and the router will recover the snapshot during the boot sequence without having me doing anything basically. Is this "assumption" correct?

 

Many thanks for your support on this.

 

Fab.

2 REPLIES 2
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Re: mx104 upgrade and snapshot

a month ago

Hi Fab,

 

To answer your concerns :

 

1) Is there a specific reason why you are considering to upgrade this in 3 stages?  I believe you can achieve this in 2 steps as well. First to an intermediate version( major release) and then to the final version.

 

2) I have personally not seen issues here.

 

3) The error message is expected on lower-end MX platforms like Mx5 to MX-104 when we use ‘request system snapshot’ without specifying the storage location where there is no Compact Flash and SSD separation present.

 

So when it comes to the ‘request system snapshot’ command usage, it usually tries to apply for da1 which is hard disk/SSD for the high-end platforms which is resulting in this error message. On MX104 routers, you can back up your software installation on an external USB storage media device with knob ‘request system snapshot media usb01 or usb02’. Yes, you may ignore the da1 media missing error.

 

To back up files on an MX104 to a specified external storage media device:

https://kb.juniper.net/InfoCenter/index?page=content&id=KB12880

 

Hope this helps :slightly_smiling_face:

 

Please mark "Accepted Solution" if this helps you solve your query. Kudos are always appreciated.

 

 

 

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Re: mx104 upgrade and snapshot

4 weeks ago

Thanks for the answer and for your time.

What about this last question?

 

Now, in case of problem to bring the router back as it was before, is enough to simply insert the USB0 where the snapshot is saved and the router will recover the snapshot during the boot sequence without having me doing anything basically. Is this "assumption" correct?

 

Thanks

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