Issu Prerequisites; Issu Restrictions And Guidelines - HP 12500 Configuration Manual

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ISSU prerequisites

Read the software release notes to determine which software images need to be upgraded,
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whether these software images are compatible with one another, and whether these software
images are compatible with the software images running on the device. Then, based on the
compatibility, determine the command series to use.
• Make sure the storage media on the MPUs have sufficient free space for the new image files or the
IPE file.
Use the display device command to examine the operation status of the system and make sure the
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system is operating properly. If there is any problem with the system, troubleshoot the system before
performing an ISSU.
Make sure the LACP timeout interval is the long timeout interval (the lacp period short command is
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not configured) on all member ports of the dynamic aggregation groups.
• Use the display mdc command to examine the operation status of the MDCs and make sure all
MDCs are in active state.
Use the save command to save the running configuration.
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In standalone mode, use FTP or TFTP to download or upload the software image files or the IPE file
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to the root directory of the active MPU's storage medium. Before the standby MPU is upgraded, the
system will ask you whether you want to copy the files to the standby MPU. For more information
about FTP and TFTP, see "Configuring FTP" and "Configuring TFTP."
In IRF mode, use FTP or TFTP to download or upload the software image files or the IPE file to the
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root directory of the global active MPU's storage medium. Before a standby MPU of the IRF fabric
is upgraded, the system will ask you whether you want to copy the files to the standby MPU.

ISSU restrictions and guidelines

Before an ISSU:
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Enable GR or NSR for protocols including LDP, RSVP, OSPF, ISIS, BGP, and FSPF. Otherwise,
services might be interrupted during the upgrade.
Disable BFD for protocols including LDP, RSVP, OSPF, ISIS, RIP, BGP, VRRP, and NQA.
Otherwise, services might be interrupted during the upgrade.
Log in to the device through the console port. If you are using Telnet or SSH, you might be
disconnected from the device before the ISSU is completed.
To achieve better service continuity, make sure the device has two MPUs and both MPUs are
operating properly. When the device has only one MPU and the reboot method is used, service
interruption is unavoidable. (In standalone mode.)
To achieve better service continuity, make sure the IRF fabric has two or more MPUs and all
MPUs are operating properly. When the IRF fabric has only one MPU and the reboot method
is used, service interruption is unavoidable. (In IRF mode.)
ISSU reboot upgrade is not supported on an interface card with 512MB memory.
issu series commands
Yes.
114
install series commands
No.