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How is firmware transferred while ugrading a device via controller?

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TitleHow is firmware transferred while ugrading a device via controller?
Question
How is firmware file transferred while ugrading a device via controller?
Environment
  • All Summit WM3000 Series Controllers
  • ExtremeWiNG Controllers
  • WirelessWiNG Controllers
  • ExtremeWiNG Access Points
  • WirelessWiNG Acess Points
  • WiNG 5 Software
Answer
When device upgrade command is issued on controller, it will first confirm valid MINT link between both devices and if link is found transfer starts.
device-upgrade <hostname>
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You can confirm status using following command
device-upgrade <hostname>
show device-upgrade status
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No FTP or direct transfer mechanism is used to transfer the firmware file, everything is maintained by MINT, sub-type file-xfer. On below image 192.168.7.105 is adopting controller, hostname VX, MINT ID 12.21.8E.25
service pktcap on bridge verbose filter host <IP>
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Any device which is not adopted directly by he controller is going to be upgraded through its RF-domain manager. For example in NOC deployments the file is provided by cluster master / adopting controller.
show global domain manager
device-upgrade <hostname>
show device-upgrade status
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From RFDM point of view this image is first uploaded to its cached memory (not to flash:/upgrade)
dir flash:/cache/upgrade/
show device-upgrade versions
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ADOPTED-AP then takes the file from its direct adopter
show adoption status
service pktcap on bridge verbose filter host <IP> or host <IP>
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This is to save bandwidth between remote sites and NOC. Also to make upgrade more efficient as a local copy of adopted device firmware is always available.

 
 

 
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