Kontron AM4311 - Manual (Page 24)

Functional Description
Page 9 AM4311 User Guide
2. Functional Description
2.1 Uplink Infrastructure
The Uplink Infrastructure supports 4x 1000Base-X SFP uplink ports which are connected via a MUX to 8 AMC
ports.
The quad-lane 2:1 switch consists of four multiplexers and four demulti-plexers, one per lane. Each port is a
4-lane link, and each lane runs up to a 3.2 Gbps data rate independent of the other lanes. The lanes are
switched independently by setting control bits using an IPMI OEM command, according to Table 2.1.
The SFP Transceiver cages are designed according SFP MSA.
The IMPI OEM command to change the port mapping is described in Section 2.5.2.2 "OEM Set Control State".
This segmentation allows several combinations for specific usage. Configuration of all possible variation is
described in Section 2.5.3 "Configuring Port Settings".
Examples include:
AT8904M
• Base-Interface access on AMC port 0 and 1.
• Fabric-Interface access on AMC port 4 or 8.
AT8404M
• Base-Interface access on AMC port 0.
• Fabric-Interface link aggregation on AMC port P8, P9, P10 and P11
The default port assignment is listed in Table 2-2.
Table 2-1: Port Mapping
SFP Port Control Bit
0 1
SFP1 AMC P0 AMC P11
SFP2 AMC P1 AMC P10
SFP3 AMC P20 AMC P9
SFP4 AMC P4 AMC P8
Table 2-2: Default Port Assignment
SPF Port Port
SFP1 AMC P0
SFP2 AMC P1
SFP3 AMC P9
SFP4 AMC P8