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4.4.3.6 IPV6 Support
In addition to IPv4, Intel® S2600CP 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 completely independent of
one another. For example, IPv4 can be DHCP configured while IPv6 is statically configured or vice versa.
4.4.3.6.1 LAN Failover
The BMC FW provides a LAN failover capability such 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 by
IPMI methods as well as by the BMC‟s Embedded UI, allowing the user to specify the physical LAN links
constituting the redundant network paths or the physical LAN links constituting different network paths.
BMC will support only an
“all or nothing” approach – that is, either all interfaces are bonded together or
none are bonded together.
The LAN Failover feature only applies 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 (the next active LAN link will be
chosen randomly from the pool of backup LAN links with link status as “UP”). 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.
Standard IPMI commands for getting channel configuration will return the cached settings for the inactive
channels.
4.4.3.7 BMC IP Address Configuration
Enabling the BMC‟s network interfaces requires using the Set LAN Configuration Parameter command to
configure LAN configuration parameter 4, IP Address Source.
4.4.3.8 DHCP BMC Hostname
The BMC allows setting a DHCP Hostname. DHCP Hostname can be set regardless of the IP Address
source configured on the BMC. But this parameter is only used if the IP Address source is set to DHCP.
4.4.3.9 Address Resolution Protocol (ARP)
The BMC can receive and respond to ARP requests on BMC NICs. Gratuitous ARPs are supported, and
disabled by default.
4.4.3.10 Virtual Local Area Network (VLAN)
The BMC supports VLAN as defined by IPMI 2.0 Specifications. VLAN is supported internally by the BMC,
not through switches. VLAN provides a way of grouping a set of systems together so that they form a
logical network. This feature can be used to set up a management VLAN where only the devices that are
members of VLAN will receive packets related to management, and members of VLAN will be isolated
from any other network traffic. Please note that VLAN does not change the behavior of the host network
setting, it only affects the BMC LAN communication.
LAN configuration options are now supported (by means of the Set LAN Config Parameters command,
parameters 20 and 21) that allow support for 802.1Q VLAN (Layer 2). This allows VLAN headers/packets
to be used for IPMI LAN sessions. VLAN ID‟s are entered and enabled by means of parameter 20 of the
Set LAN Config Parameters IPMI command. When a VLAN ID is configured and enabled, the BMC only
accepts packets with that VLAN tag/ID. Conversely, all
BMC generated LAN packets on the channel include the given VLAN tag/ID. Valid VLAN IDs are 1
through 4094. VLAN IDs of 0 and 4095 are reserved, per the 802.1Q VLAN Specification.