Server Management Guide
Baseboard Management Controller
Intel
®
Server Boards and Server Platforms Server Management Guide 11
Table 3. Standard Channel Assignments
Channel ID
Interface
Supports
Sessions
0
IPMB
No
1
LAN 1 (ESB2 NIC)
Yes
2
LAN 2
1
(ESB2 NIC)
Yes
3
LAN 3
1
(Intel
®
Remote
Management Module 2)
No
4
EMP (Basic/PPP)
Yes
5
Reserved
–
6
PCI SMBus
–
7
SMM
No
0Eh
Self
–
0Fh
SMS/Receive Message Queue
No
Note: If supported by the server system.
2.2.4 Dedicated MAC Address
Each of the ESB2’s two NIC channels has a unicast MAC filter reserved for BMC use. 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
®
S5000 series server boards, each server board has four MAC addresses assigned to it at the
Intel
®
factory. The printed MAC address is assigned to NIC1 on the server board.
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
BMC LAN channel 2 MAC address = NIC2 MAC address + 2
2.2.5 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 be either a static IP address or a DHCP-sourced IP address.
The BMC communicates through NIC 1 or NIC 2 depending on your network configuration. To
communicate with the BMC, you need to attach a standard Ethernet cable. You cannot use PING to
confirm that this connection is valid.