Switching

I am making snapshoot on EX-4200 without virtual chasis, a single chassis.

 

When i was making the snapshoot, the EX4200 showed me:

 

This KB article may help:

 

http://kb.juniper.net/InfoCenter/index?page=content&id=KB16326&actp=RSS

 

From reading it I get the impression that if you boot from the internal flash, then you can't snapshot to the internal flash, I'm not sure if there is any way around it, a bit from the KB article:

 

The purpose of the snapshot is to save a copy  of the current Junos software and configuration on an alternate device. If the device is booted from the internal flash , then snapshot will backup the internal flash to a specified alternate media (e.g. USB) .If booted from external device then snapshot will backup to internal flash.

 

Example of the device that was booted through internal flash attempts to snapshot to same internal flash will throw the below error:

 

root> request system snapshot media internal re0 slice alternate
re0:
--------------------------------------------------------------------------

error: cannot snapshot to current boot device

I am not sure.

 

In the other customer , I had made the snapshoot in virtual chassis an d i didn´t have a problem.

 

Oviusly, this is other case. Could it be becasuse there is only flash in ex-4200-24T? and it look for a media where it save the backup. I don´t find other explication.

 

thanks B2

Hi,

please look at the "show system storage partition" output. You sholud see main and backup partition. From 10.4R3 Juniper introduced new dual partition feature if You want to snapshoot to internal media.

 

http://kb.juniper.net/InfoCenter/index?page=content&id=KB21062&smlogin=true

 

Cheers,

 

Artur

Indeed, prior to 10.4R3 you can't do that. If it is that version or a little later, then also try "req sys snap med internal slice alternate". In more recent versions you no longer have to add "slice alternate" at the end.

hello i also faced the same issue in new EX4200 switches , please advice the better solution to solve the issue.

 

 

request system snapshot

fpc0:

--------------------------------------------------------------------------

error: external (/dev/da1) media missing or invalid

 

What is the problem that you are seeing? Do you have an output and the software release?


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If this worked for you please flag my post as an "Accepted Solution" so others can benefit. A kudo would be cool if you think I earned it.

1st of all thanks for your reply ,Please advice me the solution of below error. request system snapshot fpc0: -------------------------------------------------------------------------- error: external (/dev/da1) media missing or invalid {master:0} request system snapshot media internal fpc0: -------------------------------------------------------------------------- error: Cannot snapshot to current boot device [] Now if I insert USB above error gone I can see both partitions copied with Junos please check below . {master:0} nsn> request system snapshot slice alternate fpc0: -------------------------------------------------------------------------- Formatting alternate root (/dev/da0s1a)... Copying '/dev/da0s2a' to '/dev/da0s1a' .. (this may take a few minutes) The following filesystems were archived: / {master:0} nsn> {master:0} nsn> show system snapshot fpc0: -------------------------------------------------------------------------- Information for snapshot on external (/dev/da1s1a) (backup) Creation date: Jun 24 08:10:30 2011 JUNOS version on snapshot: jbase : 11.2R1.2 jkernel-ex: 11.2R1.2 jcrypto-ex: 11.2R1.2 jdocs-ex: 11.2R1.2 jswitch-ex: 11.2R1.2 jpfe-ex42x: 11.2R1.2 jroute-ex: 11.2R1.2 jweb-ex: 11.2R1.2 Information for snapshot on external (/dev/da1s2a) (primary) Creation date: Jun 24 08:13:03 2011 JUNOS version on snapshot: jbase : 11.2R1.2 jkernel-ex: 11.2R1.2 jcrypto-ex: 11.2R1.2 jdocs-ex: 11.2R1.2 jswitch-ex: 11.2R1.2 jpfe-ex42x: 11.2R1.2 jroute-ex: 11.2R1.2 jweb-ex: 11.2R1.2 but when I remove the USB same error appears again Please advice me solution

Isn't this the same solution that you are looking as this one?

 

http://forums.juniper.net/t5/Ethernet-Switching/error-external-dev-da1-media-missing-or-invalid-on-EX4200-switch/m-p/274303#M12421


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If this worked for you please flag my post as an "Accepted Solution" so others can benefit. A kudo would be cool if you think I earned it.

Hi guys

 

I have the same issue with EX4600 14.1X53-D27.

 

I have been follow this post but also with USB plugged I cannot do snapshot.

 

Please see attached show and if you can give me a feedback

 

best regards

 

Antonio

I know this is a few years too late, but the solution to your issue is:

 

request system snapshot slice alernate

Hopefully this helps someone in the future.