Lan - Advantech MIC-3399 User Manual

3.3.3

LAN

The BMC firmware supports a LAN interface, providing RMCP/RMCP+ according to
the IPMI 2.0 specification.
The table below lists the supported network protocols.
Table 3.1: Supported Network Protocols
Mnemonic
ARP
ICMP
IP
UDP
RMCP/RMCP+
3.3.3.1 ARP
Both standard ARP requests and responses (ARP opcodes 0x01 and 0x02) are sup-
ported to propagate the BMC's IP address in the system. Gratuitous ARP is sup-
ported for dynamic address changes or failover scenarios. Other ARP opcodes are
not supported and will be ignored.
3.3.3.2 ICMP
ICMP is supported to allow network pings to/from the BMC.
3.3.3.3 RMCP/RMCP+
IPMI-over-LAN (IOL) uses RMCP as the messaging protocol, as defined in the IPMI
specifications. RMCP messages consist of the basic IPMI message with some
RMCP-specific overhead and use the UDP protocol for data transmissions.
UDP uses the IP protocol for data transmissions. Thus, the network stack must sup-
port the IP and UDP protocols along with RMCP.
RMCP+ was added in the IPMI v2.0 specification. It is an enhanced protocol for
transferring IPMI messages and other types of payloads (e.g., serial data).
Protocol
Address Resolution Protocol
Internet Control Message Protocol
Internet Protocol
User Datagram Protocol
Remote Management Control Protocol
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