Intel C2350 FH8065401488914 Data Sheet

Intel

®

 Atom™ Processor C2000 Product Family for Microserver

Datasheet, Vol. 2 of 3

September 2014

216

Order Number: 330061-002US

When an Ethernet packet reaches the GbE controller at the LAN Port, it is examined 

and compared to a number of configurable filters. These filters are configurable by the 

BMC and include, but not limited to, filtering on:

• MAC Address
• IP Address
• UDP/IP  Ports
• VLAN  Tags
• EtherType

If the incoming packet matches any of the configured filters, it is passed to the BMC. 

Otherwise, it is not passed.

Using the MAC Address type of filter, the BMC has at least one dedicated MAC address 

and incoming Ethernet traffic with the matching MAC address(es) is passed to the BMC. 

This is the simplest filtering mechanism to use and it allows the BMC to receive all 

types traffic including, but not limited to, IPMI, NFS, HTTP, etc.

Using the other types of filters, the BMC can share an MAC address (and IP address, if 

desired) with the Host OS to receive only specific Ethernet traffic. This is useful if the 

BMC is only interested in specific traffic such as IPMI packets.

Packet-reception flow can also be configured for the packet to be:

• Discarded
• Sent to the Host memory
• Sent to the external BMC
• Sent to both the Host memory and the external BMC

The OS/BMC manageability software model, SMBus commands, NC-SI commands, 

filtering, and sideband interface control are described in the Intel

(PRM).

Pass-Through Packet Filters and Control

Management 

Controller 

(BMC)

SoC Root Complex

(to Host)

SMBus or NC-SI

LAN Port 0

LAN Port 1

LAN Port 2

LAN Port 3

TX/RX

TX/RX

TX/RX

TX/RX