Intel Server Board S2400BB

Intel® Server Board S2400BB TPS

Revision 2.0

• NIC 3 MAC address = NIC 1 MAC address + 2 (for OS usage)

• NIC 4 MAC address = NIC 1 MAC address + 3 (for OS usage)

• BMC LAN channel 1 MAC address = NIC1 MAC address + 4

• BMC LAN channel 2 MAC address = NIC1 MAC address + 5

• BMC LAN channel 3 (RMM) MAC address = NIC1 MAC address + 6

The printed MAC address on the server board and/or server system is assigned to NIC1 on the server board.

For security reasons, embedded LAN channels have the following default settings:

 IP Address: Static

 All users disabled

IPMI-enabled network interfaces may not be placed on the same subnet. This includes the Intel

Dedicated

Server Management NIC

and either of the BMC’s embedded network interfaces.

Host-BMC communication over the same physical LAN connection – also known as “loopback” – is not

supported. This includes “ping” operations.

On server boards with more than two onboard NIC ports, only the first two ports can be used as BMC LAN

channels. The remaining ports have no BMC connectivity.

Maximum bandwidth supported by BMC LAN channels are as follows

BMC LAN1 (Baseboard NIC port) ----- 100Mb (10Mb in DC off state)

BMC LAN 2 (Baseboard NIC port) ----- 100Mb (10Mb in DC off state)

BMC LAN 3 (Dedicated NIC) ----- 1000Mb

6.10.3.3 IPV6 Support

In addition to IPv4, the server board has support for IPv6 for manageability channels. Configuration of IPv6 is

provided by extensions to the IPMI Set & 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.

 An IPv6 prefix is 0 to 128 bits whereas IPv4 has a 4 byte subnet mask.

 The IPv6 Enable parameter must be set before any IPv6 packets will be sent or received on that channel.

 There are two variants of automatic IP Address Source configuration vs. just DHCP for IPv4.

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

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

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 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