Internet Control Message Protocol (Icmp); Virtual Local Area Network (Vlan) - Intel S2600CO series User Manual

Intel® Server Board S2600CO Family TPS
6.10.5

Internet Control Message Protocol (ICMP)

The BMC supports the following ICMP message types targeting the BMC over integrated NICs:
Echo request (ping): The BMC sends an Echo Reply.

Destination unreachable: If message is associated with an active socket connection

within the BMC, the BMC closes the socket.
6.10.6

Virtual Local Area Network (VLAN)

The BMC supports VLAN as defined by IPMI 2.0 Specification. 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 devices which are members of the VLAN will receive packets related to management and
members of the 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 IDs 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.
Only one VLAN can be enabled at any point in time on a LAN channel. If an existing VLAN is
enabled, it must first be disabled prior to configuring a new VLAN on the same LAN channel.
Parameter 12 (VLAN Priority) of the Set LAN Config Parameters IPMI command is now
implemented and a range from 0-7 will be allowed for VLAN Priorities. Please note that bit 3 and
4 of parameter 21 are considered reserved bits.
Parameter 25 (VLAN Destination Address) of the Set LAN Config Parameters IPMI command is
not supported and returns a completion cod of 0x80 (parameter not supported) for any
read/write of parameter 25.
If the BMC IP address source is DHCP, then the following behavior is seen:
If the BMC is first configured for DHCP (prior to enabling VLAN), when VLAN is enabled,

the BMC performs a discovery on the new VLAN in order to obtain a new BMC IP
address.
If the BMC is configured for DHCP (prior to disabling VLAN), when VLAN is disabled, the

BMC performs a discovery on the LAN in order to obtain a new BMC IP address.
If the BMC IP address source is Static, then the following behavior is seen:
If the BMC is first configured for static (prior to enabling VLAN), when VLAN is enabled,

the BMC has the same IP address that was configured before. It is left to management
application to configure a different IP address if that is not suitable for VLAN.
If the BMC is configured for static (prior to disabling VLAN), when VLAN is disabled, the

BMC has the same IP address that was configured before. It is left to management
application to configure a different IP address if that is not suitable for VLAN.
Revision 1.4
Intel order number G42278-004
Platform Management Functional Overview
69