Intel S1200SPL Technical Spesification page 68

Intel® Server Board S1200SP Family Technical Product Specification
6.11.3.3 IPV6 Support
In addition to IPv4, the server board supports IPv6 for manageability channels. Configuration of IPv6 is
provided by extensions to the IPMI Set and Get LAN Configuration Parameters commands as well as through
a Web Console IPv6 configuration web page.
The BMC supports IPv4 and IPv6 simultaneously so they are both configured separately and completely
independently. For example, IPv4 can be DHCP configured while IPv6 is statically configured or vice versa.
The parameters for IPv6 are similar to the parameters for IPv4 with the following differences:
An IPv6 address is 16 bytes vs. 4 bytes for IPv4.
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An IPv6 prefix is 0 to 128 bits whereas IPv4 has a 4 byte subnet mask.
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The IPv6 Enable parameter must be set before any IPv6 packets are sent or received on that channel.
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There are two variants of automatic IP Address Source configuration vs. just DHCP for IPv4.
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The three possible IPv6 IP Address Sources for configuring the BMC are:
Static (Manual): The IP, Prefix, and Gateway parameters are manually configured by the user. The BMC
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ignores any Router Advertisement messages received over the network.
DHCPv6: The IP comes from running a DHCPv6 client on the BMC and receiving the IP from a DHCPv6
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server somewhere on the network. The Prefix and Gateway are configured by Router Advertisements from
the local router. The IP, Prefix, and Gateway are read-only parameters to the BMC user in this mode.
Stateless auto-config: The Prefix and Gateway are configured by the router through Router
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Advertisements. The BMC derives its IP in two parts: the upper network portion comes from the router
and the lower unique portion comes from the BMC's channel MAC address. The 6-byte MAC address is
converted into an 8-byte value per the EUI-64* standard. For example, a MAC value of 00:15:17:FE:2F:62
converts into a EUI-64 value of 215:17ff:fefe:2f62. If the BMC receives a Router Advertisement from a
router at IP 1:2:3:4::1 with a prefix of 64, it would then generate for itself an IP of 1:2:3:4:215:17ff:fefe:2f62.
The IP, Prefix, and Gateway are read-only parameters to the BMC user in this mode.
IPv6 can be used with the BMC's Web Console, JViewer* (remote KVM and Media), and Systems Management
Architecture for Server Hardware – Command Line Protocol (SMASH-CLP) interface (SSH). There is no standard
yet on how IPMI RMCP or RMCP+ should operate over IPv6 so that is not currently supported.
6.11.3.4 LAN Failover
The BMC FW provides a LAN failover capability so that the failure of the system HW associated with one LAN
link will result in traffic being rerouted to an alternate link. This functionality is configurable using IPMI
methods as well as the BMC's Embedded UI, allowing for user to specify the physical LAN links constitute the
redundant network paths or physical LAN links constitute different network paths. BMC supports only an all
or nothing approach – that is, all interfaces bonded together, or none are bonded together.
The LAN Failover feature applies only to BMC LAN traffic. It bonds all available Ethernet devices but only one
is active at a time. When enabled, if the active connection's leash is lost, one of the secondary connections is
automatically configured so that it has the same IP address. Traffic immediately resumes on the new active
connection.
The LAN Failover enable/disable command may be sent at any time. After it has been enabled, standard IPMI
commands for setting channel configuration that specify a LAN channel other than the first will return an error
code.
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