ISSU commands

You can use ISSU to upgrade startup software images only for two-chassis IRF fabrics. When the master reboots for an upgrade, the subordinate member takes over to ensure service continuity.

An HPE 7904 (JG682A) or HPE 7904 TAA (JH122A) switch uses one built-in MPU (slot 0). An HPE 7910 (JG841A) or HPE 7910 TAA (JH123A) switch uses two removable switching fabric modules (slots 10 and 11) for switching and control. Unless otherwise stated, the term "MPU" collectively refers to the switching fabric modules on HPE 7910 and HPE 7910 TAA switches and the built-in MPUs on HPE 7904 and HPE 7904 TAA switches.

Unless otherwise stated, the term "card" collectively refers to LPUs, switching fabric modules, and MPUs.