HP Virtual Connect 4Gb Fibre Channel Module for c-Class BladeSystem - Manual (Page 297)

Appendix C: Using IPv6 with Virtual Connect 297
must be enabled on OA 4.00. If IPv6 is enabled on OA 4.00, then VC4.10 can have IPv4 and IPv6 (dual)
address configurations.
If the OA is earlier than 4.00 and only VC is upgraded to 4.10, then VC remains in IPv4-only address
configurations. In this mode, if you attempt to configure IPv6 addresses, then appropriate warning messages
are displayed.
Upgrading OA from previous versions to OA 4.00
To use IPv6 functionality on VC, the minimum version of OA must be 4.00. If only the OA is upgraded to
4.00 and VC is older than 4.10, then IPv6 functionality is not available on VC. In this case, the VC is capable
only of IPv4 address configuration.
VC downgrades to versions older than 4.10
• Dual configuration
If VC has IPv4 and IPv6 (dual) address configurations, then you can immediately downgrade VC. For
more information, see the VCSU rollback feature. VC will be in an IPv4-only address configuration.
• IPv4 only
If VC has IPv4-only address configurations, then you can immediately downgrade VC. VC will be in an
IPv4-only address configuration.
• IPv6 only
o Not supported
o VCSU downgrade option: If VC has IPv6-only address configurations, then you cannot downgrade.
You must configure the VC with IPv4 addresses to downgrade to IPv4-only.
OA downgrades from OA 4.00
When downgrading from OA 4.00, all management IPv6 addresses in VC are removed. The configured
IPv6 address on VC features such as snmp-trap, log-target, snmp-access, ldap, radius, and tacacs, remain
configured but are not functional unless the OA is upgraded back to OA 4.00 and IPv6 is enabled.
If a VC domain exists, IPv6 must be disabled prior to a downgrade.
Multi-enclosure considerations
• All enclosures in a VC ME configuration must have the same IP configuration. All must be IPv4, Dual
Mode, or IPv6; a mixture is not supported.
• When importing an enclosure in a multi-enclosure domain, the enclosure IP configuration must be
consistent with the primary enclosure.
Limitations
VC 4.10 support for IPv6 does not include the following:
• iscsi-boot-param
• MLDv2