参数资料
型号: ZL50408GDG2
厂商: CONEXANT SYSTEMS
元件分类: 网络接口
英文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA208
封装: 17 X 17 MM, 1.40 MM HEIGHT, LEAD FREE, MO-192, LBGA-208
文件页数: 82/144页
文件大小: 1779K
代理商: ZL50408GDG2
ZL50408
Data Sheet
42
Zarlink Semiconductor Inc.
5.8
Priority Classification Rule
Figure 10 shows the ZL50408 priority classification rule.
Figure 10 - Priority Classification Rule
5.9
Port and Tag Based VLAN
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
Port-Based VLAN
An administrator can use the PVMAP Registers to configure the ZL50408 for port-based VLAN (see “Register
Definition” on page 63). 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.
Yes
No
Yes
No
Use Default port settings
Yes
Fix Port Priority?
TOS Precedence over VLAN?
(QOSC Register bit 5)
VLAN Tag?
Use VLAN
priority
Use TOS
Use logical port
Use Default port settings
IP Frame?
Use Logical Port?
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