Server Management Guide

Baseboard Management Controller
Intel
®
Server Boards and Server Platforms Server Management Guide 17
2.3.2 IPMI 2.0 Channel Management
Every messaging interface is assigned an IPMI channel ID by IPMI 2.0. Commands are provided to
configure each channel for privilege levels and access modes. The following table shows the standard
channel assignments.
Table 6. Standard Channel Assignments
Channel ID
Interface
Supports
Sessions
0
IPMB
No
1
LAN 1
Yes
4
Reserved
5
Reserved
6
Reserved
7
SMM
No
0Eh
Self
0Fh
SMS/Receive Message Queue
No
2.3.3 Dedicated MAC Address
The Integrated BMC share the same physical Ethernet link with system’s on-board NIC1. These filters
enable the BMC to receive network data streams that are logically separate from, and invisible to,
operating systems and software running on the server, despite sharing the same physical LAN
connections. This allows the BMC to support features beyond standard IPMI-over-LAN, such as
DHCP, full ARP request/response, and ICMP, without requiring a separate Ethernet cable.
For Intel
®
S3200SH and Intel
®
X38ML server boards support two LAN interfaces for operating system
use but only NIC1 supports the handling of server management traffic as BMC host IP Address.
NIC 1 MAC address (for OS usage)
NIC 2 MAC address = NIC 1 MAC address + 1 (for OS usage)
BMC LAN channel 1 MAC address = NIC1 MAC address +2
2.3.4 BMC IP Address and external connection
The BMC IP address for a particular embedded NIC is always different from the IP address of the
Server’s OS.
The BMC IP address can either be a static IP address or DHCP sourced IP address.
The Integrated BMC communicates through NIC 1 only. To communicate with the BMC, you need to
attach a standard Ethernet cable. You cannot use PING to confirm that this connection is valid.
For details on which Ethernet port is shared with the BMC to ensure successful communication, see the
following table.