HP 10500 Series Configuration Manual page 190

The feature module on the PEXs.
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# Disable automatic rollback.
<Sysname> system-view
[Sysname] issu rollback-timer 0
# Enable link-aggregation traffic redirection.
[Sysname] link-aggregation lacp traffic-redirect-notification enable
# Enable the IRF bridge MAC address to be permanent.
[Sysname] irf mac-address persistent always
# Set the physical state change suppression interval to 0 on the interfaces.
[Sysname] interface gigabitethernet1/3/0/1
[Sysname-GigabitEthernet1/3/0/1] link-delay 0 mode updown
[Sysname-GigabitEthernet1/3/0/1] quit
[Sysname] interface gigabitethernet2/3/0/1
[Sysname-GigabitEthernet2/3/0/1] link-delay 0 mode updown
[Sysname-GigabitEthernet2/3/0/1] quit
[Sysname] quit
# Upgrade the feature on the subordinate member.
<Sysname> issu load file feature flash:/feature1-a0042.bin chassis 2
This operation will delete the rollback point information for the previous upgrade and
maybe get unsaved configuration lost. Continue? [Y/N]:Y
Verifying the file flash:/feature1-a0042.bin on chassis 1 slot 0...Done.
Verifying the file flash:/5700-feature1-d2403.bin on chassis 1 slot 0...Done.
flash:/feature1-a0042.bin already exists on chassis 2 slot 0.
Overwrite it?[Y/N]:Y
Successfully copied flash:/feature1-a0042.bin to
chassis2#slot0#flash:/feature1-a0042.bin.
Verifying the file flash:/feature1-a0042.bin on chassis 2 slot 0...Done.
flash:/feature1-a0042.bin already exists on chassis 2 slot 8.
Overwrite it?[Y/N]:Y
Successfully copied flash:/feature1-a0042.bin to
chassis2#slot8#flash:/feature1-a0042.bin.
Verifying the file flash:/feature1-a0042.bin on chassis 2 slot 8...Done.
Upgrade summary according to following table:
flash:/feature1-a0042.bin
Running Version
Alpha 0041
Chassis Slot
2 0
2 8
2 12
Upgrading software images to compatible versions. Continue? [Y/N]:Y
# Perform a main/backup feature process switchover and upgrade PEX 2 (PEX 2 is connected to both IRF
members).
<Sysname> issu run switchover
Upgrade summary according to following table:
New Version
Alpha 0042
Upgrade Way
Service Upgrade
Service Upgrade
Service Upgrade
180