zl50415 Zarlink Semiconductor, zl50415 Datasheet - Page 27
zl50415
Manufacturer Part Number
zl50415
Description
Managed 16-port 10/100 M + 2-port 1 G Ethernet Switch
Manufacturer
Zarlink Semiconductor
Datasheet
1.ZL50415.pdf
(163 pages)
- Current page: 27 of 163
- Download datasheet (2Mb)
5.6
Figure 8 on page 27 shows the ZL50418 priority classification rule.
5.7
The ZL50418 supports two models for determining and controlling how a packet gets assigned to a VLAN: port
priority and tag -based VLAN.
5.8
An administrator can use the PVMAP Registers to configure the ZL50418 for port-based VLAN (see “Registration
Definition” on page 42). 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 ZL50418 determines the VLAN membership of
each packet by noting the port on which it arrives. From there, the ZL50418 determines which outgoing port(s)
is/are eligible to transmit each packet, or whether the packet should be discarded. Gigabit port 0 and 1 are denoted
as Port 25 and 26 respectively.
Priority Classification Rule
Port and Tag Based VLAN
Port-Based VLAN
Port Registers
Register for Port #0
PVMAP00_0[7:0] to PVMAP00_3[2:0]
Register for Port #1
PVMAP01_0[7:0] to PVMAP01_3[2:0]
Register for Port #2
PVMAP02_0[7:0] to PVMAP02_3[2:0]
…
PVMAP26_0[7:0] to PVMAP26_3[2:0]
Register for Port #26
Use Default Port Settings
IP
No
Yes
No
Figure 8 - Priority Classification Rule
Table 4 - Port-Based VLAN
TOS Precedence over VLAN?
(FCR Register, Bit 7)
Use VLAN Priority
Fix Port Priority ?
Zarlink Semiconductor Inc.
VLAN Tag ?
ZL50418
No
Yes
No
27
26
0
0
0
0
Use Logical Port
Destination Port Numbers Bit Map
…
No
Yes
Yes
Use Logical Port
Yes
Yes
IP Frame ?
Use Default Port Settings
No
2
1
1
0
0
Use TOS
1
1
0
0
0
Data Sheet
0
0
1
0
0
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