HP Virtual Connect 8Gb 20-port Fibre Channel Module for c-Class BladeSystem - Manual (Page 305)

Appendix C: Using IPv6 with Virtual Connect 305
Disabling IPv6 support
The enclosure-wide IPv6 support can be disabled by unselecting the Enable IPv6 check box in the OA GUI or
by using the disable IPv6 command in the OA CLI. This functionality is implemented in OA version 4.01
and higher.
To prevent NO-COMM states, enclosure-wide IPv6 support should be disabled only after IPv4 addresses are
configured and reachable.
Any IPv6 configurations existing already are retained in the domain even after disabling IPv6 support, but the
configurations are not functional.
After IPv6 is disabled, all configuration pages on the GUI and CLI display the warning "The VC Domain is not
in IPv6 mode. Hence domain is not capable of functioning IPv6 addresses" but configurations are still
allowed.
The IPv6 functionality in VC is disabled by default when VC firmware is downgraded to a version below 4.10
or the OA firmware is downgraded to a version below 4.01.
When disabling IPv6 in a multi enclosure environment, ensure IPv4 addresses are configured and reachable
in all the enclosures. IPv6 should be disabled in the primary enclosure first and then in the remote enclosures.
When a multi-enclosure domain is in dual configuration (IPv4-IPv6), disabling IPv6 in the primary enclosure
ensures that only IPv4 interconnect/OA module addresses are displayed to users in the VCM GUI and CLI.
Importing enclosures
An import can be performed in all the 3 IP modes: IPv4, IPv4-IPv6, and IPv6.
When a local import is performed, the available IPv4 or IPv6 IP addresses of the OA are used.
When import of a remote enclosure is attempted with a different IP configuration (primary enclosure in IPv4
and remote enclosure in IPv4-IPv6) other than the primary enclosure, the error message "ERROR: Enclosure
IP mode is not compatible with that of domain" is displayed in the VCM GUI and CLI.
Only enclosures with similar IP configurations can be imported to create a multi enclosure environment.
Primary enclosure Remote enclosure Impact
IPv4 IPV4 Allowed
IPv6 IPv6 Allowed
IPv4-IPv6 IPv4-IPv6 Allowed
IPv4-IPv6 IPv4 Not allowed*
IPv4 IPv4-IPv6 Not allowed*
IPv6 IPv4-IPv6 Not allowed*
IPv4 IPv6 Not allowed (OA not reachable)
IPv6 IPv4 Not allowed (OA not reachable)
*ERROR: Enclosure IP mode is not compatible with that of the domain
To prevent causing a NO-COMM state, do not disable IPv6 in either enclosure when a remote enclosure is
imported in IPv6-only mode.