ZL50408GDC ZARLINK [Zarlink Semiconductor Inc], ZL50408GDC Datasheet - Page 35

• Manufacturer Part Number: ZL50408GDC
• Description: Managed 8-Port 10/100M 1-Port 10/100/1000M Ethernet Switch
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

5.8
Figure 9 shows the ZL50408 priority classification rule.
5.9
The ZL50408 supports two models for determining and controlling how a packet gets assigned to a VLAN: port
priority and tag -based VLAN.
5.9.1
An administrator can use the PVMAP Registers to configure the ZL50408 for port-based VLAN (see “Register
Definition” on page 56). For example, ports 1-3 might be assigned to the Marketing VLAN, ports 4-6 to the
Engineering VLAN, and ports 7-9 to the Administrative VLAN. The ZL50408 determines the VLAN membership of
each packet by noting the port on which it arrives. From there, the ZL50408 determines which outgoing port(s)
is/are eligible to transmit each packet, or whether the packet should be discarded.
Priority Classification Rule
Port and Tag Based VLAN
Use VLAN
priority
Port-Based VLAN
Yes
TOS Precedence over VLAN?
Use Default port settings
(QOSC Register bit 5)
Fix Port Priority?
Figure 9 - Priority Classification Rule
VLAN Tag?
IP Frame?
No
No
No
No
Zarlink Semiconductor Inc.
ZL50408
Yes
35
Yes
No
Yes
Use Default port settings
Use logical port
Use Logical Port?
IP Frame?
Yes
Yes
No
Use TOS
Data Sheet