LAN9311i SMSC [SMSC Corporation], LAN9311i Datasheet - Page 73

• Manufacturer Part Number: LAN9311i
• Description: Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
• Manufacturer: SMSC [SMSC Corporation]

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
The ingress flow calculation is based on the packet type and the device configuration as shown in
Figure
IPv4 Precedence
IPv4(TOS)
IPv6(TC)
VLAN Priority
6.8.
Source Port
IP Precedence
Flow Priority =
Figure 6.8 Switch Engine Ingress Flow Priority Calculation
Figure 6.7 Switch Engine Ingress Flow Priority Selection
Y
Use Precedence
6b
3b
Packet is from Host
2b
VL Higher Priority
Packet is Tagged
3b
Use Precedence
DIFFSERV Table
Packet is IPv 4
Programmable
DIFFSERV[TOS]
VLAN Enable
Flow Priority =
Packet is IP
Programmable
N
Port Default
Use IP
Table
DATASHEET
Y
DIFFSERV[TC]
Packet is IPv 4
Flow Priority =
3b
3b
73
N
Calculation
Priority
N
Y
Default Priority[Source
Get Flow Priority Done
Packet from Host
Packet is IPv 4/v6
Get Flow Priority
Vlan Enable &
Vlan Enable &
Flow Priority =
VL Higher
Packet is
Packet is
& Use IP
Tagged
Tagged
Priority
Port]
N
N
N
N
Y
3b
Y
Y
Y
flow priority
Flow Priority =
VLAN Priority
Revision 1.6 (08-18-09)