Why ISSU upgrade check fails on a CE series switch

22

An ISSU upgrade feasibility check fails on a CE series switch due to the following possible causes:


  • l The switch has an unregistered card installed.


  • l No patches are installed for ISSU upgrade in the current version or the installed patch is not activated.


  • l The CPU usage and memory usage are too high.


  • l The available flash memory storage space is insufficient.


  • l The patch and system software files for the next startup are inconsistent with the currently running ones.


  • l The system software and patch files to be upgraded are invalid.


  • l The active/standby switchover status of MPUs are not Ready. You can run the display switchover state command to check the active/standby switchover status of cards.



  • l The command used to enable an ISSU upgrade is not executed in the working path of the active MPU. For example, if you run the cd slave#flash:/ command, the working path of the standby MPU is displayed.



Other related questions:
Why an ISSU upgrade fails on a CE series switch
If a card fails to start using the system software of a new version, an ISSU upgrade will fail and the system will be rolled back to the previous version.

Possible causes for a failure to ping an IPv6 address
In V100R002 and later versions, the IPv6 address of a device fails to be pinged due to the following possible causes: l. The physical state or protocol state of the interface is Down. You can run the display ipv6 interface interface-type interface-number command in any view to check the physical state and protocol state of an interface. 2. The switch fails to learn ND entries of the peer device. You can run the display ipv6 neighbors command in any view to check information about ND entries. 3. The link transmission delay is too long. The source device does not receive any Response packet from the destination device within the waiting time, and the ping operation fails. You can run the ping ipv6 -t timeout destination-ipv6-address command in any view to set “-t&rdquo to increase the timeout interval for waiting for Response packets.

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top